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International Conference onEmerging Materials and Modeling

(ICEMM - 2019)07 – 09 January 2019

Abstract Book

Organized by

Einstein’s hub

Department of PhysicsK.S. Rangasamy College of Arts and Science

(Autonomous)(NAAC Reaccredited, an ISO 9001:2008 Certified Institution, Affiliated toPeriyar University, Salem. Included Under 2(f) & 12(B) of UGC Act 1956)

K.S.R Kalvi Nagar, Tiruchengode – 637 215, Namakkal Dt,Tamil Nadu, India.

In association with

Indian Science and Technology Association[Elavenil Organization]

Tamil Nadu, India.

International Conference on Emerging Materials and Modeling(ICEMM - 2019) 07 – 09January 2019

© Copy right by the Authors. Publishing services by IENT Publications on behalf ofK.S. Rangasamy College of Arts and Science (Autonomous), Tiruchengode – 637215, India.

Published Year: 2019

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International Conference on Emerging Materials and Modeling(ICEMM - 2019) 07 – 09January 2019Indian Science and Technology Association

Elavenil(Regd.110/2015)

163/69, Secretariat colony, Kilpauk , Chennai – 600 010, IndiaEmail: [email protected]

Prof. R. JayavelPresident

MESSAGE

Material science is a diverse field of research in modern science andtechnology which plays an important role in various fields like Electronics, Medicine,Biotechnology, Energy, Crystallography, Spectroscopy, Information andCommunication Technology. It is one of the current emerging fields and it isbelieved that it will bring a wave of radical innovation and will spark new industrialrevolution in various application areas.

I am very happy to know that the Department of Physics, K.S. RangasamyCollege of Arts and Science (Autonomous), Tiruchengode is organizing the“International Conference on Emerging Materials and Modeling (ICEMM-2019)” during 7-9th January 2019. The aim of organizing such a conference willprovide a platform for knowledge dissemination and knowledge sharing. I hope theparticipants would be very much benefited out of this event by getting the details ofrecent developments in the field of Material science and modeling.

I congratulate the conveners Dr. M. Venkatesh & Dr. G. Suresh Kumarand organizing committee for the untiring work to organize the conference in asuccessful manner.

Also I would like to thank in special way Dr. V. Radhakrishnan, Principal,K.S. Rangasamy College of Arts and Science (Autonomous) and the management formotivation and cooperation to organize the conference in a grand manner.

Prof. R. JAYAVEL

President

International Conference on Emerging Materials and Modeling(ICEMM - 2019) 07 – 09January 2019Indian Association for Crystal Growth (IACG)

Office: Dean (Research)SSN College of Engineering

Chennai-603110, Tamilnadu, INDIATelephone : +91-9283105760

Prof.P.RAMASAMY Fax : +91-044-27475166President Email: [email protected]

Prof. P. RAMASAMYFormer Vice Chancellor, Alagappa University,Karaikudi, TamilnaduFounder Director, Crystal Growth Centre, Anna UniversityChennai, Tamilnadu

MESSAGE

I am happy that the Department of Physics, K.S. Rangasamy College of Arts andScience (Autonomous), Tiruchengode is organizing the “International Conference onEmerging Materials and Modeling (ICEMM- 2019)” during 7-9th January 2019. Theconference would involve active participation and healthy discussion among hundreds ofresearchers, including pioneers in the field of Materials Science. I am sure the eminentresource persons with their wide experience in Materials Science will be able to provide anew impetus to the budding researchers. I am confident that this would give them a goodplatform for exchange of ideas.

To be a successful lifetime researcher one must ensure, all the time, an updatedknowledge of the current developments in one’s own chosen field. This necessitates, amongother things, participation in serious Scientific Conferences. Physical participation inconferences creates lasting interests, impressions and new bonds of friendship andnetworking which potentially are stronger and are likely to last longer. I understand thatthere are 25 invited Lectures and 150 contributed Papers. Though organizing a conference ofthis nature is a huge task the rich experience of the organizers will certainly ensuresuccessful conduct of the programme.

I congratulate the Convener of this conference and organizing committee ofICEMM - 2019 for their dedicated work in making this event a great success. Severaldistinguished scientists are attending this conference and I am sure all the delegates will bebenefited by the deliberations in the conference. I wish the ICEMM – 2019 a grand success.

I am delighted to acknowledge the solid support extended by the principal and themanagement of K.S. Rangasamy College of Arts and Science (Autonomous) to theorganizers of this important international event of Materials Science community of ourcountry.

P. RAMASAMY


Lion Dr. K.S. Rangasamy MJFFounder & Chairman

MESSAGE

I am happy to note that the Department of Physics, K.S. Rangasamy Collegeof Arts and Science (Autonomous), Tiruchengode in association with ElavenilOrganization, Chennai is organizing an International Conference on EmergingMaterials and Modeling (ICEMM- 2019) during 7-9 January 2019. I was inferredthat a large number of delegates from all over the country are participating in theconference. I am sure that the deliberations in the conference would trigger a spirit oftrue pursuit for knowledge and research. I wish the Principal, Organizer and theirteam to organize this conference successfully.

Dr. K.S. RANGASAMY


MESSAGE

I am happy to note that the Department of Physics, K.S. Rangasamy Collegeof Arts and Science (Autonomous), Tiruchengode in association with ElavenilOrganization, Chennai is organizing an International Conference on EmergingMaterials and Modeling (ICEMM- 2019) during 7-9 January 2019. I hope that alarge number of delegates from all over the country are participating in theconference. I am sure that the deliberations in the conference would trigger a spirit oftrue pursuit for knowledge and research. I wish the Principal, Organizer and theirteam to organize this conference as a successfully to make this event to be marked inthe annals of KSRCAS.

Mr. R. SRINIVASAN

Mr. R. SrinivasanVice Chairman


MESSAGE

I am happy to know that an International Conference on EmergingMaterials and Modeling (ICEMM- 2019) is being organized by the Department ofPhysics, K.S. Rangasamy College of Arts and Science (Autonomous), Tiruchengode– 637 215 in association with Elavenil Organization, Chennai during 7-9 January2019. I believe that this conference will bring distinguished Professors and renownedscientists together to discuss various developments in materials, address newchallenges and solutions. I hope that this conference will be a millstone indeveloping the knowledge and will enhance human resource in this field.

My warm wishes for the grand success of this conference

Mrs. KAVITHAA SRINIVASAN

Mrs. Kavithaa SrinivasanExecutive Director


MESSAGE

I am delighted to know that the Department of Physics, K.S. RangasamyCollege of Arts and Science (Autonomous), Tiruchengode in association withElavenil Organization, Chennai is organizing an International Conference onEmerging Materials and Modeling (ICEMM- 2019) during 7-9 January 2019. Ibelieve that the conference will bring distinguished academicians, eminent scientistsand scholars from the length and breadth of the nation to discuss the recentadvancement in materials development and their applications. I note that 26 invitedspeakers and 300 participants from all over the country are participating in thisconference. This conference will be a great platform for the students to interact withrenowned scientists and academicians for chistling their future.

I, on the behalf of K.S. Rangasamy College of Arts and Science, extend ahearty welcome to delegates and wish the organizers all the success.

Dr. V. RADHAKRISHNAN

Dr. V. RadhakrishnanPrincipal

International Conference on Emerging Materials and Modeling(ICEMM - 2019) 07 – 09January 2019PREFACE

The International Conference on Emerging Materials and Modeling(ICEMM- 2019) is organized by the Department of Physics, K.S. RangasamyCollege of Arts and Science (Autonomous), Tiruchengode – 637 215 in associationwith Elavenil Organization, Chennai during 7-9th January 2019. The theme of theconference is focused on the latest developments in materials research and theirtechnological applications. The conference aims to bring distinguished academiciansand eminent scientists to discuss various developments in materials, address newchallenges and solutions. This conference will be a great platform for the students tointeract with renowned scientists and academicians for their future direction. Theconference is enlightened by 7 plenary talks, 19 invited talks and 140 contributorypapers from various reputed institutions.

We believe that this conference will be highly informative and will provideexcellent opportunity for researchers and scientists to discuss and share the mutualareas of interest. We are sure that this conference will update the knowledge ofparticipants in the area of materials research.

ConvenersICEMM – 2019

International Conference on Emerging Materials and Modeling(ICEMM - 2019) 07 – 09January 2019Organizing Committee

Chief Patron : Lion. Dr. K.S. Rangasamy, MJFFounder & ChairmanKSR Educational InstitutionsMr. R. SrinivasanVice Chairman, KSR Educational InstitutionsMrs. Kavithaa SrinivasanExecutive Director, KSR Educational Institutions

Patron : Dr. V. RadhakrishnanPrincipal, KSRCAS

Conference Chair : Prof. R. JayavelPresidentIndian Science and Technology AssociationChennai

Conveners : Dr. M. VenkateshHead, Department of Physics (UG), KSRCAS.Dr. G. Suresh KumarHead, Department of Physics (PG), KSRCAS

Organizing Secretaries : Dr. M. SrinivasanPresident, Elavenil Science AssociationChennai (SSNCE)Dr. N. KarunakaranSRM University, Ramapuram Campus (ISTA)

Organizing CommitteeMembers : Mr. S. Santhosh, KSRCAS

Ms. V. Poornima, KSRCASMs. A. Mohanapriya, KSRCASMs. H. Shiny Roselin Mary, KSRCASMs. M. Umavathi, KSRCASMr. K. Dhanasekar, KSRCASMs. R. Fathima Beebei, KSRCASMr. G.S. Dhamodharan, KSRCASMs. S. Udhayalakshmi, KSRCASMs. E. Indhulekha, KSRCAS

International Conference on Emerging Materials and Modeling(ICEMM - 2019) 07 – 09January 2019National / International Scientific Advisory Committee

Prof. Akira Yamakata, Toyato Technological Institute, JapanProf. Ajayan Vinu, University of South Australia, AustraliaProf. John V. Kennedy, MacDiarmid Institute, New ZealandProf. Y.Yokogawa, Osaka City University, JapanProf. Ramasamy Ponnadurai, University of Mauritius, MauritiusProf. Dhayalan Velauthapillai, Høgskulen påVestlandet, BergenProf. Palani Balaya, National University of Singapore, SingaporeProf. Ganesh D Sockalingum, REIMS University, FranceDr. Siva Bohm, University of Cambridge, UKDr. R. Sumathi, Ludwig-Maximilians-University, GermanyDr. S. Karthikeyan, Aston University, UKDr. S. Ramasundaram, Sunchon University, South KoreaDr. Torsten Becock, IKZ, Berlin, GermanyDr. C. R. Selvakumar, Watterloo University, CanadaProf. M. Lakshmanan, Professor of Eminence & DST Ramanna Fellow,Bharathidasan University, TrichyProf. P. Kolandaivel, VC, Periyar University, SalemProf. P. Ramasamy, Dean (Research), SSN InstitutionsProf. K. Baskar, VC, MS University, TirunelveliProf. P. Manisankar, VC, Bharathidasan University, TrichyProf. S. Ganesan, Anna University, ChennaiProf. D. Velmurugan, University of Madras, ChennaiProf. S. Mohan, Vel Tech University, ChennaiProf. K. Iyakutti, MS University, TirunelveliProf. G. Ravi, Alagappa University, KaraikudiProf. G. Anbalagan, University of Madras, ChennaiProf. L. Kavitha, Central University of Tamil Nadu, ThiruvarurProf. S. Balakumar, University of Madras, ChennaiProf. K. Srinivasan, Bharathiar University, CoimbatoreProf. K. Jeganathan, Bharathidasan University, TiruchyProf. P. Ravindran, Central University of Tamil Nadu, ThiruvarurProf. K. Sankaranarayanan, Alagappa University, KaraikudiProf. Rita John, University of Madras, ChennaiProf. D. Nedumaran, University of Madras, Chennai

International Conference on Emerging Materials and Modeling(ICEMM - 2019) 07 – 09January 2019Prof. S. Kalainathan, VIT University, VelloreProf. V. Vasu, Madurai Kamaraj University, MaduraiProf. P. Vickraman, Gandhigram Rural Institute, DindigulDr. K. Gunasekaran, University of Madras, ChennaiDr. M. Arivanandhan, Anna University, ChennaiDr. R. Muruganandhan, Anna University, ChennaiDr. A. Thamizhavel, TIFR, MumbaiDr. M. Eswaramoorthy, JNCASR, BangaloreDr. V. N. Mani, C-MET, HyderabadDr. K. Ravichandran, University of Madras, ChennaiDr. J. Senthil Selvan, University of Madras, ChennaiDr. Sudra Ganesh, Annamalai University, ChidambaramDr. D. Rajan Babu, VIT University, VelloreDr. K. Sethuraman, Madurai Kamaraj University, MaduraiDr. R. Ramesh Babu, Bharathidasan University, TiruchyDr. N. Vijayan, NPL, New DelhiDr.E.K. Girija, Periyar University, SalemDr. G. Poongodi, Quaid-e- Millath Govt. Arts College, ChennaiDr. R. Kannan, Anna University, DindigulDr. P. Murugakoothan, Pachaiyappa's College, ChennaiDr. C. Ramachandra Raja, Govt. Arts College, KumbakonamDr. R. Mohan Kumar, Presidency College, ChennaiDr. T. Alagesan, Presidency College, ChennaiDr. R. Arun kumar, PSG College of Technology, CoimbatoreDr. M. Senthil Pandian, SSNRC, ChennaiDr. R. Sankar, National Taiwan University, Taipei


1

Index

AbstractID Title of the Abstract Page

No.Plenary Lectures

PL – 01 Networking of metal–organic complexes for something newKentaro Tashiro

14

PL – 02 Transparent conducting oxides thin films: An overview andopportunities in basic researchJiban Podder

15

PL – 03 Silicon crystal growth and solar cell applicationsM. Srinivasan and P. Ramasamy

16

PL – 04 Graphene-metal oxide based nanocomposites as efficient electrodematerials for supercapacitor applicationsR. Jayavel

18

PL – 05 Magnetization a reversal and electromagnetic spin soliton collisionin ferromagnetic nanowire with first, second nearest neighbour andDzyaloshinskii-Moriya interactionsL. Kavitha

19

PL – 06 Nucleation control and separation of paracetamol polymorphsthrough novel crystallization methodologiesK. Srinivasan

21

PL – 07 Chaotic dynamics and possible applications: An experimental StudyK. Thamilmaran

22

Invited LecturesIL – 01 Single crystal XRD for precise drug designing

K. Gunasekaran24

IL – 02 Investigation on physical properties of doped CdO thin films foropto-electronics and gas sensing applicationsR. Ramesh Babu

25

IL – 03 Scalable nanostructures for photonic device applicationsR. Navamathavan

26

IL – 04 Unusual nonlinear absorption switching behaviour of CdFe2O4–rGO nanocompositeT. C. Sabari Girisun

27

IL – 05 Nanocomposite based sensitive electrochemical sensor for detectionof heavy metalsB.S. Sreeja

28

IL – 06 The role of amorphous silicon in solar photovoltaicsP. Balaji Bhargav

29


2

IL – 07 Metal–organic frameworks: functional luminescent materials forSensing ApplicationsJ. Kalyana Sundar

30

IL – 08 Overview of SSN RC modeling activities - indigenously developedDS furnace for growing mc-Si ingot for solar cell applicationsM. Srinivasan and P. Ramasamy

31

IL – 09 Tailoring the properties of nanohydroxyapatite – a multifunctionalbiomaterial for advanced biomedical applicationsE.K. Girija

32

IL – 10 Sun light into electricity through organic & organic-inorganichybrid materialsArul Varman Kesavan and Praveen C Ramamurthy’s

33

IL – 11 Vectorial approach in focal engineering for all optical magneticrecordingK B Rajesh

34

IL – 12 Ab initio prediction of the high energetic and biological molecules –A validation studyP. Srinivasan and A. David stephen

35

IL – 13 Effect of metal ion dopants on the properties of nonlinear opticalcrystalsM. Selvapandiyan

36

IL – 14 Growth and physical investigation of AgIn0.5Ga0.5S2 single crystalfor mid-IR applicationsN. Karunagaran and P. Ramasamy

37

IL – 15 Mesoporous carbonated hydroxyapatite nanorods production viamicrowave-assisted hydrothermal synthesis with tunablecharacteristics for different biomedical applicationsGopalu Karunakaran

38

IL – 16 Development of metal-based chemosensors for pyrophosphatedetection in PCR amplified DNA productsAnbu Sellamuthu Kooduthurai

39

IL – 17 Development of high quality and large size 4-Nitrophenol (4NP)derivative nonlinear optical (NLO) single crystals: A new and novellow cost technique for crystal growthMuthu Senthil Pandian* and P. Ramasamy

40

IL – 18 Fabrication of CeO2/TiO2 hybrid anode for enhanced photo currentefficiency of dye sensitized solar cellsM. Karl Chinnu, S. Karthikeyan, M. Arivanandan and R. Jayavel

41

IL – 19 Hybridization and gene flow of lentil using the new potential tool ofembryo rescueShyamali Saha* and Monika Lulsdorf

42


3

Oral PresentationsOP – 01 Fabrications of magnetic responsive hydroxyapatite nanoplatform:

In vitro release of chemo drugs for cancer therapyK. Sangeetha*and M. Ashok

44

OP – 02 Multifunctional nanoparticles for multimodal imaging and photo-magnetic hyperthermia therapyS. Karthi*, Ruimin Xing and Shanhu Liu

44

OP – 03 Theoretical investigation on the inhibition mechanism of antiviraldrugs towards the influenza A (H1N1) virus neuraminidase: Astructure based drug designM. Sivanandam, P. Parasuraman* and K. Veluraja

45

OP – 04 Green chemistry - Recent adances in new oxidisers for rocketpropulsionK. Umamaheswari

46

OP – 05 An investigation on photocatalytic and antibacterial performance ofGO based ternary nanocomposite under visible light irradiationS. Shanavas, A. Priyadharsan and P. M. Anbarasan*

47

OP – 06 Investigation on 2-amino 4-methylpyridinium salicylate singlecrystal for third order NLO applicationsJ. Jayaprakash

48

OP – 07 Thermo luminescence and photo luminescence studies on YAlO3

single crystalsM. Suganya, P. Vijayakumar, Amirdha Sher Gill and O. Anna Lakshmi

49

OP – 08 Synthesis, structural, vibrational, thermal, dielectric, opticalproperties and quantum chemical studies of third order NLOsingle crystal for optical power limiting applicationsV. Siva*, S. Asath Bahadur, A. Shameem and S. Athimoolam

50

OP – 09 Synthesis, growth, spectral, thermal and optical studies on a neworganic NLO crystal: triglycine perchlorateE. Selvakumar and A. Chandramohan

51

OP – 10 A comparative study of naturally and synthetically derivedbioceramics for biomedical applicationsM. Mathina, S. Sridevi, L. Kavitha and D. Gopi*

52

OP – 11 Optimizations of pH and precursor ratio for the synthesis ofwurtzite structured Cu2ZnSnSe4 thin film for photovoltaicapplicationA. Murugan, V.Siva, A. Shameem and S. Asath Bahadur*

53

OP – 12 Theoretical investigation on the intermolecular dihydrogen bondingbetween alkyne and alkali metal hydrideD. Parimala devi*, A. Abiram and G. Praveena

54

OP – 13 Optical and thermal properties of NLO single crystal: sodium acidphthalate hemihydrateR. Jothi and P. Sasikumar

55

OP – 14 Molecular docking and 3D-pharmacophore modeling to study theinteractions of purine derivatives with thyroid hormone receptoralpha1I. Ragavan, P.M. Anbarasan* and A. Prakasam

56


4

OP – 15 Modelling and simulation of 250 MHz ST-X quartz based SAWdelay line for potential gas sensing applicationsR. Banu Priya, T. Venkatesan and M. Haresh Pandya*

57

OP – 16 Applications of nanofluids in heat pipe solar collector - A reviewN. Jayanthi, M. Venkatesh*, R. Suresh Kumar

58

OP – 17 Cu doped ZnO nanoparticles: synthesis, structural and opticalPropertiesS. Thambidurai* and P. Gowthaman

59

OP – 18 Synthesis of hydroxyapatite using eggshell by hydrothermal methodfor biomedical applicationsG. Vidhya and E.K. Girija*

60

OP – 19 Gas sensing properties of zinc oxide doped cadmium sulfidenanocomposites under optimized annealing effect prepared bychemical methodL. Arunraja*, P. Thirumoorthy and L. Edwinpaul

60

OP – 20 Zinc oxide nanoparticles: biosynthesis, characterization andinvestigation of its antibacterial activity on gram-positive andgram-negative bacteria prepared by chemical methodM. Ranjitha and A.P. Sudha*

61

OP – 21 Evaluation of anticorrosive behaviour of ZnO nanotetra-podson AZ91-grade Mg alloyR. Brindha, M. Nandhini, M. Selvam and K. Sakthipandi

62

OP – 22 Synthesis, characterization of cobalt oxide nanoparticles bymicrowave combustion method and their antibacterial propertiesA. Nallathambi, A. Prakasam*and R. Azhagu Raj

63

OP – 23 Role of surfactant (CTAB) on structural, morphological, opticaland antibacterial properties of SnO2nanoparticlesK. Sujatha, T. Seethalakshmi*, A.P. Sudhaand and O.LShanmugasundaram

64

OP – 24 Studies on thermal nonlinear optical effects of organic crystal 2-(2-chloro-benzylidene)-cyclododecanoneD. Bharath, D. Anbuselvi and S. Kalainathan

65

OP – 25 Larvacidal activity of medicinal plants (Leucas Aspera and PiperNigram) against Aedes aegypti and culex mosquitoesN. Gobeeswaran, V. V. Sathibabu Uddandrao, Ganapathy Saravanan*

66

OP – 26 Influence of synthesis methods on photocatalytic performance ofZnO and La doped ZnO nanoparticlesM. Sudha, A. Balamurugan,Y.A. Syed Khadar and P. Manoj Kumar

67

OP – 27 Mechanical properties of aluminium alloy 2024 reinforced withlime stone and graphite hybrid metal matrix compositesM. Muniyappan, N. Iyandurai*and P. Duraisamy

68

OP – 28 Morphology and size controlled synthesis of zinc oxidenanostructures and their optical propertiesJ. Duraimurugan and P. Maadeswaran

69

OP – 29 Growth, optical and thermal characterization of nonlinear opticalmaterial of valine oxalate cadmium chlorideS. Akilandeswari and L. Jothi

70


5

OP –30 Quantum chemical calculations on pyrazol derivativesP. Periyannan, P. Srinivasan, A. David Stephen and K. Ravichandran*

71

OP – 31 Molecular docking and DFT study of cute cure N-[3-[[5-bromo-4-[2-(1H-imidazol-5-yl) ethyl amino] pyrimidin-2-yl] amino] phenyl]pyrrolidine-1-carboxamide as 3-phosphoinositide-dependent kinase1 inhibitorLatha Natarajan and Barathi Diravidamani*

72

OP – 32 Effect of next nearest neighbor in classical Heisenberg model withadded biquadratic exchange and DM interactionsS Suganya, A Prabhu and B Srividya*

73

OP – 33 Analysis of antibacterial activity and cytotoxicicity of silver oxidedoped hydroxyapatite exposed to DC glow discharge plasmaP. Sri Devi* and K.A. Vijayalakshmi

73

OP – 34 Effect of lanthanide doping structural, morphological and opticalproperties of zirconium dioxide nanoparticlesM. Ananth and A.Amuthavalli

74

OP – 35 ZnS hybrid quantum dots for multifunctional applicationsV.P. Devarajan and P. Periasamy

75

OP – 36 Structural, optical, antibacterial activity of ZnO nanoparticlesprepared by simple chemical methodP Joseph Samrat and P S V Subba Rao

76

OP – 37 Highly efficient with improved green dopant materials based onquinacridone derivatives for OLEDs: A DFT analysisS. Palanisamya, P. Srinivasanb, A. David Stephenc and K. Selvarajua*

76

OP – 38 Theoretical and vibrational analysis of FT-IR, FT-raman spectra,HOMO-LUMO analysis of halogenated amino benzene: A densityfunctional approachS. Natarajan*, S. Prabakaran, V. Rama and S. Palanisamy

78

OP – 39 Analyzing the suitability of tungsten oxide (WO3) nanoparticlesthrough chromium doping for dopamine Bio Sensor applicationsB. Gnanavel* and V. Hariharan

79

OP – 40 High-performance mc-Si ingot grown by Modified DS system:numerical investigationM. Thiyagaragjan, G. Aravindan, M. Srinivasan * and P. Ramasamy

80

OP – 41 Growth and characterization of piperine (PPN) single crystal grownby slow evaporation solution growth techniqueA. Muthuraja and D. Bharath

81

OP – 42 Dielectric, mechanical and optical studies on 4, 4’-dimethoxybenzoin single crystal by vertical bridgman techniqueA. Muthuraja and S. Kalainathan

81

OP – 43 Nonlinear excitations in biological systems using nonlinearequationsS. Srimathi and A. Muniyappan*

82


6

Poster PresentationsPP – 01 Electrochemical studies of layered double hydroxides for energy

storage devicesM. Mynadevi , T. Santhiyadevi and A. Subhashri*

84

PP – 02 Synthesis and characterization of CdS quantum dots (QDs) usingfruit extract as an organic capping agentK. Kandasamy, M. Venkatesh* , S.P. Rajasingh and P. Manoj Kumar

85

PP – 03 Formation of multiple focal spots using phase modulated radiallypolarized doughnut gaussian beamG.Sharmila, A.Shema, P.Sangeetha and K.Prabakaran*

86

PP – 04 Crystal growth, optical, structural, spectral and electricalproperties of magnesium zinc Thiocyanate [MZTC] single crystalR.Arivuselvi*, P. Ramesh Babu and V.Vasanthakumar

86

PP – 05 Tight focusing properties of phase modulated radially polarizeddoughnut gaussian beamK. Geetha, R. Ramyaraj, V. Karthik and K. Prabakaran*

87

PP – 06 Creation of multiple focal holes using phase modulated azimuthallypolarized doughnut gaussian beamR. Ramyaraj, S. Salaisuganthum, P. Sangeetha and K. Prabakaran*

88

PP – 07 Focal shifting of radially polarized doughnut gaussian beam usingcosine phase plateV. Karthi, K. Prabakaran* and P. Sangeetha

88

PP – 08 Development of superhydrophobic surface on aluminium forcorrosion protectionR. Mohan Raj, Karthick raja and V. Raj

89

PP – 09 Electrosynthesis of alumina/poly (2-AP) / ZrO on Al plate forfluoride removalR. Mohan Raj and K. Sowmiya

90

PP – 10 Fabrication of DY2O3 coating on Ti implant for improved corrosionprotectionR. Mohan Raj P. Dhanalakshmi and V. Raj

91

PP – 11 Fabrication of alumina/SiO2 – chitosan composite coatings withadvanced anticorrosive propertiesR. Mohan Raj and M. Kaviya

92

PP – 12 Tungsten-doped barium strontium titanate as photoanodes for dyesensitized solar cellsV. Kavitha, P. Mahalingam and N. Sethupathy*

93

PP – 13 Recent trends in nano materials applications in environmentalmonitoring and remediationK. Umamaheswari

94

PP – 14 Investigation on optimization of conventional drinking watertreatment plantK. Umamaheswari

94

PP – 15 Structural and optical characterization of pure and cadmium dopedserine zinc acetate nlo crystalsR. Sakunthaladevi and L. Jothi

95


7

PP – 16 Molecular structure, vibrational, molecular orbital and populationanalysis of charge transfer NLO active material: 4-Dimethylaminopyridinium Picrate for optoelectronic applicationsG. Sivaraj, N. Jayamani* and V. Siva

96

PP – 17 Stability/instability nature in neuronal microtubulin lattices underthe effect of double-well potentialR. Priya L. Kavitha* and D. Gopi

97

PP – 18 Fabrication of gelatin incorporated yttrium, cerium substitutedhydroxyapatite nanocomposite for biomedical applicationP. Saravanakumar, R. Ramachandran, L. Kavitha and D. Gopi*

98

PP – 19 Photoluminescence and structural characterization onpraseodymium (Pr3+) doped rubidium chloride (RbCl) singlecrystalsD. Roobanguru* and S. Bangaru

99

PP – 20 Mechanical, structural and vibrational characterization of Pr3+

doped KCL single crystalsS.Bharani * and S. Bangaru

100

PP – 21 Optical and photoluminescence studies on KBr:Nd3+ single crystalsV. Shanmugam* and S. Bangaru

100

PP – 22 Synthesis, growth, spectral, thermal and optical studies on a neworganic NLO crystal: Triglycine perchlorateE. Selvakumar and A. Chandramohan

101

PP – 23 Structural and optical characterisation of Cu doped lithiumsulphate single crystalK. Venkatesan and L. Jothi

101

PP – 24 Supramolecular architecture, hydrogen bonding assembly andphysical properties of 2-aminopyridinium monochloroacetatemonochloroacetic acid single crystal for NLO applicationsS. Abirami, V, Siva and S. Asath Bahadur*

102

PP – 25 Synthesis and characterization of MnFe2O4 nanoparticles forbattery applicationsP. Durga Devi and T. Theivasanthi*

103

PP – 26 Structural, thermal and electrical properties of WO3 nanoparticlesprepared by wet chemical techniqueT. Thilagavathi and D. Venugopal*

104

PP – 27 Synthesis, growth and characterization of non-linear opticalorganic 2-amino-4-methylpyridinium 3-chlorobenzoate crystal byslow evaporation solution growth techniqueC. Vidya, I. Ragavan, A. Priyadharsan, S. Shanavas and P. M.Anbarasan*

105

PP – 28 The performance study of perovskite type solar cells using metalsubstituted SrTiO3 nanoparticlesIndira Priyadharsini*, P. M. Anbarasan and V. Aroulmoji

105

PP – 29 Molecular structure, vibrational spectra and DFT computationalstudies of hydrocortisenR. Uvarani and A. Manaka

106


8

PP – 30 Conversion of eggshell biowaste into hydroxyapatite usingmicrowave reactorD. Muthu, G. Suresh Kumar and E.K. Girija*

107

PP – 31 Green synthesis and characterization of Mg doped CdSnanoparticles using Aloevera leaf extractN. Subathra, P. Duraisamy* and V. Sangeethaa

107

PP – 32 Bio synthesis and characterization of Cu doped CdS nanoparticlesby using carica papaya peel extractV. Sangeethaa, P. Duraisamy* and N. Subathra

108

PP – 33 Growth and characterization of nonlinear optical crystal zincthiourea sulphateS. Jeevarekha

109

PP – 34 Thermal analysis of two-phase closed thermosyphon (TPCT) usingnanofluidsS. Tharves Mohideen and R. Suresh Kumar*

109

PP – 35 Synthesis and characterisation of ZnO and CdO nanoparticlesT. Anuradha*, K. V. Vaishali and S. Pooranima

110

PP – 36 Investigations on magnetic nanoparticles embedded hydroxyapatitenanoparticles: a potential candidate for magnetic hyperthermiaD. Karthickraja, S. Karthi, G.A. Kumar and E.K. Girija*

111

PP – 37 DFT and TD-DFT studies on diphenylamino derivatives: A dyesensitized solar cellsL. Sathya, P. Srinivasan, B. Gnanavel and A. David Stephen

112

PP – 38 Delonix elata leaf extract mediated synthesis of NiO nanoparticleswith enhanced photovoltaic and photo catalytic propertiesV. Kavitha, P. Mahalingam and N. Sethupathy*

113

PP – 39 Hydrothermal synthesis and characterization of Cu2ZnSnSe4

chalcogenide nanoparticles for solar cell applicationsS. Gokilapriya and G. Sahaya Dennish Babu*

114

PP – 40 A novel rhombohedron-like nickel ferrite nanostructure:microwave combustion synthesis, structural characterization andmagnetic propertiesK.M. Nalinasree and G. Suresh Kumar*

115

PP – 41 One step method to synthesize flower-like hydroxyapatitearchitecture using mussel shell bio-waste as a calcium sourceM. Swetha and G. Suresh Kumar*

116

PP – 42 Green synthesis and antibacterial activity of hydroxyapatitenanorods for orthopedic applicationsP. Sangeetha and G. Suresh Kumar*

117

PP – 43 A investigation of nickel doped zinc oxide nanoparticlesK. Vidhya, G. Rubini and M. Thenmozhi

118

PP – 44 High performance visible light photocatalytic activity of hexagonalshaped nanodiscs g-C3N4/NiO heterostructured nanocompositesM. Sumathi, A. Prakasam* and P.M. Anbarasan

118

PP – 45 Synthesis, growth and characterization of L-Alanine alaniniumnitrate single crystalG. Krishnamoorthi and R. Uvarani*

119


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PP – 46 Microwave assisted synthesis of tin oxide nanoparticles using ricehusk as templateR. Vijayan* and N. Surumbarkuzhali

120

PP – 47 Synthesis and characterization of In2O3 nanoparticlesR. Kalaivani*, M. Seetha, T. Anitha, N. Suryaprabha and K. Menaka

121

PP – 48 In situ green synthesis and characterization of ZnO/Agnanoparticles for anti-bacterial activity using cardiospermum leafextractM. Kirubhakaran, S. Gayathri and S. Santhosh*

122

PP – 49 Encanced antibacterial activity of ZnO nanoparticles via greensynthesis using bambusa vulgaris & artabotrys hexapetalus plantextractsM. Sevvanthi, V.T. Jeielayaganga and S. Santhosh*

123

PP – 50 Identification of phytoconstituents in tabernae montana (L) R.Brflower: qualitative and quantitative analysisR. Aishwarya, V. V. Sathibabu Uddandrao and Ganapathy Saravanan*

124

PP – 51 Effects of Mn/Co/Ni doping on magnetic and phtocatalyticproperties of WO3 nanoparticles by microwave irradiation methodM. Nivetha, A. Sneha and S. Santhosh*

125

PP – 52 Green synthesis of iron oxide nanoparticles from catharanthusroseus plant leavesK. Babu*, S. Shobana and S. Jothimani

126

PP – 53 Investigation of structural, morphological and antimicrobialproperties of Ag doped CeO2 nanocomposites using polyindole as areducing agentM. Elango, M. Deepa*, R. Subramanian and G. Sarawathy

127

PP – 54 Appraisal of sensory and proximate composition of carrot juiceincorporated cow milk paneerM. Gracypeela, P. R. Nivedha and S. Vadivukkarasi*

128

PP – 55 Microwave assisted combustion synthesis and characterization ofnickel ferrite nanoplatelets doped effects on rare-Earth ironsD. Koushika, M. Vanitha Sri and M. Venkatesh*

129

PP – 56 Structural, optical and photocatlytic properties of zinc oxidenanoparticles obtained by simple plant extract mediated synthesisC. Mahalakshmi andJ. Duraimurugan

130

PP – 57 Evaluation of bioactive components from Lawsonia inermis LinnK. Jawahar, R. Krishnan and S. Arunambiga*

130

PP – 58 Growth, structure, vibrational, optical characterization ofimidazolium glycine NLO single crystalE. Sumathi, A. Aambika and R. Fathima Beebei*

131

PP – 59 Identification of phytochemicals and its antioxidant potentiality ofabrus precatorius leavesS. Mathavan, V. V. Sathibabu Uddandrao and Ganapathy Saravanan*

132

PP – 60 Sugarcane juice mediated synthesis of copper oxide nanoparticles,characterization and their antibacterial activityA.P. Angeline Mary, A. Thaminum Ansari*and R. Subramanian

133


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PP – 61 Extraction of bioactive compounds from momordica charantiaseeds and evaluation of its phytochemicals and antioxidantpotentialityC. Pavithra, P. R. Nivedha and S. Vadivukkarasi*

134

PP – 62 Surface and optical properties of undoped and Cu doped ZnOnanostructureN. Deepa and J. Duraimurugan

135

PP – 63 Creation of super-long bright channel using high NA lens axiconwith dedicated multibelt binary phase maskK. Lalithambigai* and P.M. Anbarasan

135

PP – 64 Identification of phytoconstituents extracted from benincasa hispidaseeds by using GC-MSK. Pravin, P.R. Nivedha and S. Vadivukkarasi*

136

PP – 65 Synthesis and characterization of selenium nanoparticle fromaqueous extract of emilia sonchifolia leavesI. Monika, S. Vijaykumar, P. Mohanraj and A.Kathirvel*

137

PP – 66 Experimental studies on caffeine mediated synthesis ofhydroxyapatite nanorods and their characterizationR. Subramanian*, P. Murugan, M. Elango and G. Chinnadurai

138

PP – 67 Identification and estimation of phytochemical constituents fromleaves extracts of crotonbon plandianus., baill.M. Jayapriya, V. V. Sathibabu Uddandrao and Ganapathy Saravanan*

139

PP – 68 The influence of Cu-doping on structural, optical andphotocatalytic properties of ZnO nanorodsN.S. Pavithara and J. Duraimurugan

140

PP – 69 The structural and magnetic properties of gadolinium doped ofnickel nanoferrite using microwave combustion methodK. Poovarasu, M. Vanitha Sri and M. Venkatesh*

140

PP – 70 Phytochemical profile and antioxidant activity of anisochiluscarnosus leavesA. Kathirvel*, P. Priyanka and S. Mohan Raj

141

PP – 71 Plant extract mediated Synthesis and optical properties of Mgdoped ZnO nanoparticlesK. Tamilarasi and J. Duraimurugan

142

PP – 72 Growth and characterization of (Tris) thiourea doped zinc sulphatesingle crystalsP. Thanuprabha and S. Ramya

142

PP – 73 Synthesis of ZnO nanoparticles and its photocatalytic activityS. Archana and J. Duraimurugan

143

PP – 74 Synthesis and characterization of manganese oxide nanoparticlesfrom gardenia resinifera leaves extractR. Manjula, M. Thenmozhi, S. Thilagavathi and A. Kathirvel*

143

PP – 75 Removal of methylene blue dye using combination of activatedcarbon from wood apple outer shell and betel leafT. Vijayalakshmi and G. Elango

144


11

PP – 76 Soliton excitation in chiral nematic liquid crystal system under theinfluence of electric and magnetic fieldN. Surya Prabha*, S. Dhamayanthi, A. Mohana Priya, R. Kalaivani andK. Menaka

145

PP – 77 Structural, morphology and optical properties WO3 nanoparticlesfor energy applicationP. Periasamy*, T. Krishnakumar, Murthy Chavali, Prem Felix Siril, andV.P. Devarajan

146

PP – 78 Synthesis, structural and optical characterization of CdSnanoparticlesN. Om Muruga, A. Balamurugan, D. Sathes Kumar and Y.A. SyedKhadar

147

PP – 79 Structural, optical and bacterial activity ZnO nanoparticlesD. Sathes Kumar, A. Balamurugan, N. Om Muruga and Y.A. SyedKhadar

147

PP – 80 Crysal growth, dielectric and laser damage threshold properties oflithium hydrogen phthalate dihydrate single crystalSenthilkumar Chandran*, Rajesh Paulraj* and P.Ramasamy

148

PP – 81 Investigate the elecctrochemical activity for magnesium oxidesembedded carbon spheres synthesis by facial hydrothermal methodM. Gayathri, R. Ranjithkumar, S. Ezhilarasi, N. Nallamuthu, S. AsathBahadur and P. Devendran*

149

PP – 82 Synthesis and characterization of spinel structured NiCo2O4

nanoparticles for high performance supercapacitorsA. Pown, R. Packiaraj, P. Devendran, S. Asath bahadur and N.Nallamuthu*

150

PP – 83 Investigation of benzothiazole derivatives as corrosion inhibitors formild steel copperS. Anbalagan and M. Ravishankar

151

PP – 84 Synthesis, structural, morphological and optical properties of sol-gel synthesized Ni doped CuO nanoparticlesL.Valarmathi and J. Jayaprakash

151

PP – 85 Theoretical calculation of higher heating values (HHV) of variouswoody biomass materials based on ultimate analysis dataN. Arumugasamy, A.N. Seethalasmi and D. Prem Anand

152

PP – 86 Growth and characterization of 4-methyl-3-nitrobenzoic acid(4M3N) single crystal by bridgman – stockbarger method for NLOapplicationsK. Ramachandran*, A. Raja, Muthu Senthil Pandian and P. Ramasamy

153

PP – 87 Growth, optical and laser damage threshold properties of 4-dimethylaminopyridinium 4-nitrophenolate 4-nitrophenol(DMAPNP) for NLO applicationsT. Kamalesh*, P. Karuppasamy, Muthu Senthil Pandian, P. Ramasamyand Sunil Verma

154

PP – 88 Growth and characterization of 1H imidazolinium hydrogen L-tartrate NLO single crystal by slow evaporation methodK. Menaka*, K. Karnan, R. Kalaivani and N. Suryaprabha

155


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PP – 89 Influence of 4,4'-bipyridine doped PVDF/KI/I2 solid polymerelectrolytes for dye sensitized solar cell (DSSC) applicationsS. Kannadhasan*, M. Senthil Pandian and P. Ramasamy

156

PP – 90 Bulk growth and characterizations of 2-aminopyridinium4-nitrophenolate 4-nitrophenol (2AP4N) single crystals for SHGdevice applicationP. Karuppasamy*, T. Kamalesh, Sunil Verma, Muthu Senthil Pandianand P. Ramasamy

157

PP – 91 N-hexylcarbazole substituted triphenylamine donor basedsensitizers for dye sensitized solar cells application - theoreticalinvestigationP. Pounraj, V. Mohankumar, M. Senthil Pandian and P. Ramasamy*

158

PP – 92 Influence of diphenylaminophenyl as donor group on Zn-porphyrinfor dye sensitized solar cell applicationsS. Kotteswaran and P. Ramasamy*

159

PP – 93 Fabrication of hole-transport-free perovskite solar cells using 5-ammonium valeric acid iodide as additive and carbon as counterelectrodeN. Santhosh, S.R. Sitaaraman, P. Pounraj, R. Govindaraj, M. SenthilPandian*, and P. Ramasamy

160

PP – 94 Directional growth, physicochemical and quantum chemicalinvestigations on 2-amino-5-nitropyridinium p-phenolsulfonate(2A5NPP) single crystal for nonlinear optical (NLO) applicationsV. Sivasubramani, V. Mohankumar, M. Senthil Pandian* and P.Ramasamy

161

PP – 95 Synthesis and characterization of organic 2-(cyano 3-(4-diphenylamino) phenyl) prop 2-enoic acid dye for electrochemicalcell applicationsKotteswaran Shanmugam, M. Senthil Pandia and P. Ramasamy

163

PP – 96 Optimization of the high-performance multi-crystalline siliconsolidification process by side heater design-DS SystemV. Kesavan, M.Vishnuwaran, M. Srinivasan and P. Ramasamy*

163

PP – 97 Vibrational, NBO, Fukui function, DOS, thermodynamical andmolecular docking analyses of p-chlorophenacyl bromide usingHartree Fock and B3LYP methodsG. John James,* Senthilkumar Chandran and M. Arivazhagan

164

PP – 98 Review of dye sensitized solar cellD. Maheswari and D. Sreenivasan

164


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Plenary Abstracts


14

PL – 01

Networking of metal–organic complexes for something new

Kentaro Tashiro*International Center for Materials Nanoarchitectonics, National Institute forMaterials Science, 1-1 Namiki, Tsukuba 305-0044*Corresponding Author Email: [email protected]

“Networking” is an important activity to create something new for not only societybut also science. In my talk, I would like to show our trials on the networking ofmetal–organic complexes via covalent bond as well as metal–metal interaction.When you take a look of the molecular structures of biomolecules, e.g. DNA,peptide, and sugar, you will notice how ubiquitous the controlled molecular sequenceis among them. In fact, nature seems to prefer that as one of the major structuralfeatures on the molecular level. Application of such direction for the moleculardesign of synthetic compounds would be an intriguing approach, not only to see theclear reason why she does, but also to create a new research area in the field ofmaterials science. In this decade, we have developed the science of syntheticmolecular sequences, through the construction and application of metal–organiccomplex arrays (MOCAs) containing a precisely determined specific sequence ofmetal centers as well as that of amino acids [1–5]. Some selected topics will bepresented in my talk to help your understanding on the newly emerging researchareas related with synthetic molecular sequences. On the other hand, metal–metalinteractions observed among group 10 or 11 metal complexes typically exhibit largeeffects on their absorption and emission profiles, depending on the distance and/orangle between the involving metal centers. Particularly, crystalline assemblies ofthese metal complexes show chromic behaviors in response to the subtle changes ofthe metal–metal interactions caused by the absorption/desorption of volatile smallmolecules to the crystalline lattice (vapochromism). While such vapochromicbehaviors attract much attentions for their sensing applications, their correlations tothe chemical reactivity of the metal complexes have been scarcely explored so far.Here, by taking advantage of the dynamic nature of a crystalline Pt(II) metalcomplex that switches the mode of Pt(II)–Pt(II) interaction uponabsorption/desorption of water molecules in the crystalline lattice, we investigatedthe relationship between the mode of metal–metal interaction and photochemical


15

reactivity of the complex. Furthermore, the substrate-triggered activation of thecrystal, based on its vapochromic behavior, was realized as the first step for thedesign of a smart photo-catalyst that spontaneously transforms into its active form bysensing the presence of targeted chemicals [6]. The same type of Pt–Pt interactionsalso play the crucial role on the photo-responsive charge-transporting properties ofcrystalline assemblies of a donor–acceptor covalent dyad [7].

References[1] J. Am. Chem. Soc. 2011, 133, 759–761.[2] Inorg. Chem. 2012, 51, 6437–6439.[3] Chem. Commun. 52, 1759–1761 (2016).[4] https://www.youtube.com/watch?v=LO97zgXdD2A[5] ChemBioChem 16, 1706 (2018).[6] Inorg. Chem. (2018) 57, 13079–13082.[7] Inorg. Chem. (2015) 54, 11581–11583.

PL – 02

Transparent conducting oxides thin films: An overview andopportunities in basic research

Jiban PodderDepartment of Physics, Bangladesh University of Engineering and Technology,Dhaka-1000, Bangladesh.*Corresponding Email: [email protected], [email protected]

Transparent conducting oxides (TCO) are wide band-gap semiconductors with acomparably low absorption of electromagnetic waves within the visible region of thespectrum. In TCOs, the non-metal part, B, consists of oxygen. In combination withdifferent metals or metal-combinations, A, they lead to compound semiconductors,AyBz, with different opto-electrical characteristics. These opto-electricalcharacteristics can be tuned by doping, AyBz:D (D = dopant), with metals, metalloidsor non-metals. TCOs have several potential applications in a wide variety of electro-optical devices as transparent electrodes for flat panel displays, photovoltaic cells,low emissivity windows, window defrosters, transparent thin film transistors, lightemitting diodes, opto-electrical interfaces, as shielding of electromagnetic radiationand semiconductor lasers, etc., but, despite the enormous experience in the field,there remain many unanswered questions at both applied and fundamental levels.


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The availability of the raw materials and the economics of the deposition method arealso significant factors in choosing the most appropriate TCO material. During thepast, the dominant TCOs have been considered: Tin oxide (SnO2), Zinc oxide (ZnO),Cadmium oxide (CdO), and Copper oxide (CuO). High quality TCO’s have beendeposited on a plain glass substrate via spray pyrolysis technique, a very economicaland practical way of mass production. The surface morphological, structural, opticaland electrical characterizations have been performed and discussed in details. Theselection decision is generally made by maximizing the functioning of the TCO thinfilm by considering all relevant parameters, and minimizing the expenses. In order totune the band gap of TCOs, one might consider modifying or substituting thetransition metal (TM), because the rigid nature of the band gap originates mostlyfrom the strongly localized character of the d-electrons. Moreover, the ability to tunethe band gap is becoming significantly important for developing highly efficientsolar cells and transparent conducting oxides. The doping of transition metal ionssuch as Fe, Ni, Co, Mn, and Al, etc. has been found a great influence on the band gaptuning of the oxides thin films. In this article, a combined experimental andtheoretical study will be addressed to elucidate the possibility of band gap tuning intransparent conducting oxides and also discusses the several key physical propertiesthat determine the macroscopic physical properties that, in turn, affect theperformance of devices and finally, several key topics that ought to be included infuture basic research programs.

PL – 03

Silicon crystal growth and solar cell applications

M. Srinivasan and P. RamasamySSN Research centre, SSN College of engineering,Chennai-603110.*Corresponding Email: [email protected]

Among all the renewable energy sources, PV solar cell plays a major role [1]. Singlecrystal and multi- crystalline solar cells are considered as first generation solar cells.Thin film based solar cells are considered as second generation solar cells. Nano-crystalline based solar cells, dye-sensitized solar cells and concentrated solar cellsare considered as third generation solar cells. There is lot of crystal growth in severalof these solar cells.


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Unlike silicon crystals used in the electronics industry, purity, crystalperfection and homogeneity need not necessarily be highest on the list of desirableattributes for crystalline silicon incorporated into commercial PV modules. Themajority of PV solar cells are fabricated from bulk silicon crystals, which may beeither single-crystalline or multi-crystalline. A market share of mono- and multi-crystalline silicon (mc-Si) are more than 90% at present and will be so in theforeseeable future[2]. Indian solar cell industries import silicon wafers and cells andconvert them into solar modules. Today 98% of the silicon wafers imported intocountry are mc-silicon wafers and 2% wafers are single crystalline wafers. Single-crystalline wafers typically have better material parameters but are also moreexpensive which is grown by Czochralski(Cz) growth process. CZ wafers contain alarge amount of oxygen in the silicon wafer. Oxygen impurities reduce the minoritycarrier lifetime in the solar cell, thus reducing the voltage, current and efficiency. Inaddition, the oxygen and complexes of the oxygen with other elements may becomeactive at higher temperatures, making the wafers sensitive to high temperatureprocessing. To overcome these problems, Float Zone(FZ) wafers may be used. Dueto the difficulty in growing large diameter ingots and the often higher cost, FZ wafersare typically only used for laboratory cells and are less common in commercialproduction. Multi-crystalline silicon (mc-Si) is an important material withadvantages of low-production cost and high conversion efficiency. It has a marketshare of more than 60% in all photovoltaic materials. Directional solidification (DS)method has become the leading technique for producing mc-Si because of its betterfeedstock tolerance, higher throughput and easier operation. Solar cell efficiency isdecreased by impurities, precipitates, and structural defects in the mc-Si ingots [2].The generation and distribution of these are investigated using numerical analyses inthis paper. Simulation of heat and mass transfer in bulk growth has become anindispensable tool for an efficient, time and cost saving optimization procedure. Aglobal modelling of heat transfer was performed to study the generation of creepstress and formation of dislocations in multi-crystalline silicon at the various growthstages for the various modified DS system. The aim is to increase average grain sizein silicon multi-crystals and reduce the impurities distribution and dislocationdensity. We have found suitable dimensionless numbers, bottom groove DS blockand suitable insulation speed.

References[1] B. K. Sahu, Renewable and Sustainable Energy Reviews, 59, 927-939 (2015).


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[2] J. Friedrich et al. Journal of Crystal Growth, 447, 18–26 (2016).

PL – 04

Graphene-metal oxide based nanocomposites as efficient electrodematerials for supercapacitor applications

R. Jayavel*Centre for Nanoscience and Technology, Anna University, Chennai - 25, India.*Corresponding Email: [email protected].

Two dimensional graphene-based nanocomposites are emerging as a new class ofmaterials with excellent electrical, thermal, optical and mechanical properties,leading to their potential application in different areas, such as photovoltaics,sensors, batteries, photocatalyst and nanoelectronics. The study of decorating thegraphene sheets with inorganic functional materials such as metals, metal oxides andmetal sulfides is now becoming a promising and challenging area of research. In thisstudy, reduced graphene metal-oxide composites with SnO, RuO2, V2O5, Co3O4,MoS and CdS have been synthesized by homogeneous co-precipitation method [1,2].Multi-layered composite structures with 1 D carbon nanotubes integrated with 2Dgraphene structures with the addition of 3 D bulk nanoparticles have been prepared[3]. The prepared composite structures have been subjected to structural, optical,electrical property studies. The photocatalytic properties of the composites werestudied for the degradation of organic dyes from industrial waste water [4]. Theelectrochemical properties of Graphene-metal oxide composites reveal that thesematerials can be effectively used as electrodes for supercapacitor application withimproved specific capacitance, higher power density and cyclic stability [5-7].Flexible free standing reduced graphene oxide (rGO) papers have been fabricated byevaporation induced self assembly process and their electrical, mechanical, opticaland electrochemical properties have been studied [8]. Functional devices likebimorphic actuators, flexible solid state supercapacitors and solar cells have beenfabricated using the rGO papers [9-12].

References[1] T. Saravanan, et. al., Dalton Trans., 44 (2015) 9901.[2] M. Shanmugam, et. al., ACS Appl. Mater. & Inter., 7 (2015) 14905[3] R. Raja, et. al., J. Mater. Chem. A, 2 (2014) 18480[4] M. Shanmugam, et .al., J. Photochem. Photobiology B, 163 (2016) 216


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[5] M Murugan, et. al., Chem. Phys. Lett. 650 (2016) 35[6] R. Thangappan, et. al., Dalton Trans., 45 (2016) 2637[7] D.Selvakumar, et. al., J. Mat. Sci.:Mater. Electron., 27 (2016) 6232[8] C. Sengottaiyan, et. al., Bull. Chem. Soc. Japan, 90(2017) 955[9] D. Selvakumar, et.al., Mater. Lett. 191 (2017) 282[10] D. Selvakumar, et. al., J. Alloys & Comp. Vol. 90(2017) 955[11] D. Selvakumar, et. al., Solar Energy, 163 (2018) 564[12] C. Sengottaiyan, et. al., J. Solid State Chem., 269 (2019) 409

PL – 05

Magnetization a reversal and electromagnetic spin soliton collisionin ferromagnetic nanowire with first, second nearest neighbour andDzyaloshinskii-Moriya interactions

L. KavithaDepartment of Physics, School of Basic and Applied Sciences, Central University ofTamilnadu, Thiruvarur-610 005, IndiaThe Abdus Salam International Centre for Theoretical Physics, Trieste, Italy*Corresponding Email: [email protected]

The technological future for magnetic data storage is both challenging and exciting.The present era of information technology have huge developments in electronicdevices such as mobile phones and personal computer, this era has been stronglydriven by the growing demand to increase the density and speed of writing andretrieving data in memory devices. The magnetism based storage devices are harddisk drive, magnetic optical disk and magnetic random access memory. In magneticmemory devices, the bits are stored by setting the magnetization vector of theindividual magnetic domains either up or down through magnetization reversal. Theoperation time for switching the magnetization pushed in the picoseconds regime byapplying high magnetic field. Much lower magnetic layer thickness, down to about100 nm, which is highly desirable for increasing recording densities such asnanowire. The magnetic field component of the propagating electromagnetic waveacts a suitable magnetic field pulse to stimulate the magnetization reversal in theferromagnetic medium. The magnetization dynamics governs the precessional anddamped motion of the spin such as Landau-Lifshitz-Gilbert equation. This equationdescribes the spin dynamics in the form of soliton. The problem is completely


20

investigated in the frame of solving nonlinear evolution equation significantlyfacilitated by highly sophisticated mathematical analysis and higher computationaltechniques.

We investigate the nonlinear spin dynamics of a one dimensional anisotropicferromagnetic nanowire with the inclusion of first-neighbour, second-neighbour andasymmetric Dzyaloshinskii-Moriya interaction through quasi-classical approximationand the dynamics is found to be governed by a perturbed cubic nonlinearSchrödinger (pCNLS) equation in the continuum limit. Solving those equations forsoliton is a challenging task. Therefore, the solutions of these equations assumeimportance from mathematical point of view.

We find that the two solitons exhibit inelastic collision which we mean that thesolitons change its shape after collision. Further, we carry out the multiple scaleperturbation scheme to EDNLS equation and it is found that amplitude and velocityof EM soliton undergoes flipping referred as magnetization reversal. Time taken toreverse the magnetization lies at the nanoscale regime due to the presence of spinpolarization current which is actively participating in reducing the switching timeconsiderably Further, we invoke the Jacobi elliptic function method to solve thepCNLS equation and the dynamics of spins in an anisotropic ferromagnetic nanowireis governed by the periodic wave, bright like solitary wave and dark-like solitonnature and the amplitude of the localized waves are well fluctuated due to theinfluence of next-nearest neighbour (NNN) and DM interaction parameters.

It is recently established that the ferromagnetic system for exchange of magneticenergy between the lattices paves way to the possibility of all magnetic computing.Therefore the above studies may find potential applications in optical computationand magnetic computing extended to magnetic recording in the very demandingfuture.

Graphical Abstract:


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PL – 06

Nucleation control and separation of paracetamol polymorphsthrough novel crystallization methodologies

K. SrinivasanCrystal Growth Laboratory, Department of Physics, School of Physical Sciences,Bharathiar University, Coimbatore-641 046, Tamil Nadu, India.*Corresponding Email: [email protected].

Polymorphism, the phenomenon of the ability of a chemical compound exist in morethan one crystalline form, is a profound concern in many scientific, technological andindustrial fields. This enables the polymorphs of the same material to exist withdifferent physico-chemical properties which influences them to play a vital role inpharmaceutical sectors. The majority of pharmaceutical products are formulated assolids in the crystalline state. With the potential to exist in different crystallinemodifications or polymorphs, each solid form bears its own physical and chemicalproperties, influencing directly the bioavailability and shelf-life of the final dosageform. This crucial issue has promoted the intense search of desired polymorphic formto ensure safe and efficacious drug compound for the potential needs. Crystallizationis the main key unit operation which enables to establish necessary control over thenucleation and isolation of preferred polymorphs. Paracetamol an excellent analgesicand antipyretic therapeutic drug crystallizes in three different polymorphic forms:monoclinic (form I), orthorhombic (form II) and the unstable (form III). Monoclinicform I crystallizes at normal growth conditions in contrast to the crystallization ofmetastable orthorhombic form II, and the unstable polymorph form III which ishighly elusive. Moreover, the separation of these polymorphs remains as aformidable challenging task today. Form I is thermodynamically stable but due tostiff construction of the molecules inside the crystal, its compression ability is poorwhereas form II crystallizes in orthorhombic structure with enough slip planes withinit that allows plastic deformation under compaction and hence has highercompressibility than monoclinic form. This makes form II potentially moreattractive, from an industrial standpoint, for the direct compression in tablets. In thisperspective, the details of various crystallization methodologies adopted inlaboratory scale to separate out the polymorphs of paracetamol at the nucleation leveland investigation on the solution mediated polymorphic phase transformation


22

between different polymorphs of paracetamol at different experimental conditionswill be discussed.

PL – 07

Chaotic dynamics and possible applications: An experimental study

K. ThamilmaranCentre for Nonlinear Dynamics, School of Physics, Bharathidasan UniversityTiruchirapalli, Tamilnadu,India - 620 024.*Corresponding Email: [email protected]

In this presentation, mainly focus on the simple nonlinear electronic circuit elemrntsconsisting of either real nonlinear physical devices or devices constructed withingenious piecewise-linear (PWL) circuit element namely, Chua’s diode have beenutilized as veritable block boxes to study the complex dynamics. These circuitelements are easy to build, easy to model and easy to analyse. Further, the memristoris a passive nonlinear two-terminal circuit element that maintains a functionalrelationship between the time integrals of current and voltage, respectively, viz.charge and flux. Using these nonlinear elements we construct nonlinear oscillatorsand study its dynamics. In addition, we will discuss the applications of nonlinearchaotic circuits.

References[1] L.O. Chua, C.A. Desoer, E.S. Kuh, Linear and nonlinear circuits, New York:

McGraw-Hill, 1987[2] A.L. Fitch, Development of memristor based circuits, World Scientific, 2013.[3] M. Lakshmanan, S. Rajaseekar, Nonlinear dynamics: integrability, chaos and

patterns, Springer Science & Business Media, 2012[4] M. Lakshmanan, K. Murali, Chaos in nonlinear oscillators: Controlling and

Synchronization, World Scientific, 1996.


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Invited Abstracts


24

IL – 01

Single crystal XRD for precise drug designing

K. GunasekaranCentre of Advanced Study in Crystallography and Biophysics, University of Madras,Guindy Campus, Chennai – 600025*Corresponding Email: [email protected]

Drug development is evolved almost ‘trial and error’ over many centuries.Chemistry, biochemistry and spectroscopy advancements aid to identify causes ofdiseases and roles of protein and other biomolecules (putative drug targets) in suchdisease conditions. By advancements in molecular biology, recombinant DNAtechnology and parallel developments of new physical methods such as flourimetry,calorimetry, microscopy and imaging techniques enriched our understanding aboutthe disease mechanisms and role of particular biomolecule, whether small or macro,in such diseases.

Designing chemical compounds (ab initio or from traditional medicines) is the bottleneck in effective drug development efforts. The binding or recognition of thesemolecules with proteins (drug target) is primarily based on structuralcomplementarity between target and drug. Hence it is easy to perceive that structural(3D) information about target and drug is necessary to establish the mechanism ofaction of the drug. More interesting fact is that if the target structure is known thenlibrary of structures (chemical space) can be screened against the target and identifynew lead molecules. This is a virtual lab situation. If needed, leads can be optimizedwith desired characteristics to make them approvable drugs. Structure determinationbecomes essential to work with a small or macromolecule for effective and rationaldrug designing. X-ray crystallography, the only tool to establish the 3D structure andthereby it is the premier step in structure based drug design. Aiming PG students andResearch scholars, appreciation of single crystal XRD will be made.


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IL – 02

Investigation on physical properties of doped CdO thin films foropto-electronics and gas sensing applications

R. Ramesh BabuCrystal Growth and Thin Film Laboratory, Department of Physics, BharathidasanUniversity, Tiruchirappalli-620 024.*Corresponding Email: [email protected]

Transparent conducting oxide (TCOs) thin films have become an important andintegral-component of various opto-electronic devices due to the unique combinationof high electrical conductivity and high optical transmittance through the UV–visibleand NIR region of solar spectrum. Most commonly used TCO thin films are ZnO,SnO2, In2O3 and CdO. Among them, CdO thin films are extensively used in variousopto-electronics applications due to their relatively simple crystal structures, n-typedegenerate semiconducting properties and high optical and electrical properties.Despite the interesting properties and potentiality, CdO is still not so popularmaterial due to their low optical band gap (2.2 eV for undoped CdO) when comparedto some other important available TCOs. In order to tune, the optical and electricalproperties of CdO thin films for specific requirement mostly aliovalent metal ionsdoping methodology was used. Mostly the metal ions doped CdO has excellentthermal stability and chemical stability.

The present study attempts to understand the electrical and optical behavior ofundoped and rare earth and transition metal ions doped CdO films deposited onmicroscope glass substrates at 300°C by economic chemical spray pyrolysisexperimental technique. Further, the deposited undoped and doped CdO films weresubjected to structural, morphological, optical and electrical property investigation.The formaldehyde gas sensing properties of undoped and rare earth and transitionmetal ions doped CdO thin films were studied by simple chemi-resistivity methodand the obtained results will be discussed in detail.

References[1] P. Velusamy, R. Ramesh Babu, K. Ramamurthi, M. S. Dahlem, E.

Elangovan, RSC Advances, 5 (2015) 102741.[2] P. Velusamy, R. Ramesh Babu, K. Ramamurthi, E. Elangovan, J. Viegas,

Journal of Alloys and Compounds, 708 (2017) 804-812.


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[3] P. Velusamy, R. Ramesh Babu, K. Ramamurthi, E. Elangovan, J. Viegas, M.Sridharan, Sensors & Actuators: B. Chemical, 255 (2018) 871-883.

[4] P. Velusamy, R. Ramesh Babu, K. Ramamurthi, E. Elangovan, J. Viegas, M.Sridharan, Journal of Physics and Chemistry of Solids, 112 (2018) 127-136.

IL – 03

Scalable nanostructures for photonic device applications

R. NavamathavanDivision of Physics, School of Advanced Sciences, VIT Chennai, Chennai – 600127*Corresponding Email: [email protected]; [email protected]

Gallium nitride based nanostructures have been receiving considerable attention asbuilding blocks for nanophotonic technologies due to their unique high aspect ratios,promising the realization of photonic and biological nanodevices such as blue lightemitting diodes (LEDs), short-wavelength ultraviolet nanolasers and nanofluidicbiochemical sensors. In comparison with bulk multiple quantum well (MQW)structures, nanowire (NW) heterostructure growth has the potential advantage ofbeing dislocation and strain free. Significant efforts have been made to control thegrowth of III-V nitride MQW nanostructures in terms of size and quality to get highstructural and optical properties for efficient device functions. In particular,InGaN/GaN MQW NWs are very much useful for the blue light emission. In thistalk, I will briefly present our experimental results about the growth, characterizationand LED device fabrication of InGaN/GaN MQW NW heterostructures. Theseheterostructure MQW NWs were grown by using metalorganic chemical vapordeposition (MOCVD) via vapor liquid solid (VLS) method. The systematiccharacterizations of MQW NWs were conducted to analysis for their structural,morphological, optical and electrical properties. Single InGaN/GaN nanowire LEDswith emission wavelength of blue region were demonstrated by tuning the indiumconcentration. Such NW LEDs also exhibit superior electrical performance, with aturn-on voltage ~ 2 V and negligible leakage current under reverse bias. This kind ofheterostructure MQW NWs are promising to allow flat band quantum structures thatare shown to improve the efficiency of LEDs.

Keywords: III-V nitrides, GaN/InGaN, Nanostructures, LED device.


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IL – 04

Unusual nonlinear absorption switching behaviour of CdFe2O4–rGOnanocomposite

T. C. Sabari GirisunNanophotonics Labortory, Department of Physics, Bharathidasan University,Tiruchirappalli – 620 024, Tamilnadu, India*Corresponding Email: [email protected] pulsed lasers are in high demand in the field of medicine for cancerdetection, cell transfection, collagen imaging, microsurgery, tissue welding,cataract surgery and refractive vision correction. The substantial increase in therisk of handling intense laser pulses insist the need for optical limiters whichcan protect optical components from intense laser beam. With pulse excitation,optical limiting property can be achieved by accumulative nonlinear optical(NLO) phenomena like excited state absorption, two/three photon absorption,and free carrier absorption. Materials that exhibit a strong nonlinear absorptionand explored as excellent optical limiters includes phthalocyanines, fullerenes,carbon nanotube and porphyrins. Recent research has identified inorganicdecorated reduced graphene oxide (rGO) to be a potential candidate for limitingapplications due to its tunable optical properties. Based on this, simple strategybased on electrostatic interaction was utilized to assemble cadmium ferrite ofvarious morphologies (nanoplatelets to nanorods) on reduced graphene oxidesheets using a one-step hydrothermal reaction. Intensity dependent openaperture Z-scan experiment with ultrafast laser excitation (800 nm, 150 fs and80 MHz) exposed the presence of nonlinear absorption in pure GO [saturableabsorption] and CdFe2O4 [reverse saturable absorption]. Surprisingly, thenanocomposite exhibited unusual switching of reverse saturable absorption tosaturable absorption behaviour at high peak intensities. The contribution of theindividual components of the nanocomposite in achieving unusual nonlinearabsorption switching and strong optical limiting will be discussed in detail.References

[1] M. Saravanan, T.C. Sabari Girisun, S. Venugopal Rao, Journal of MaterialsChemistry C 5, 9929-9942 (2017).


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[2] T.C. Sabari Girisun, M. Saravanan and Venugopal Rao Soma, ACS AppliedNano Materials 1, 6337-6348 (2018).

IL – 05

Nanocomposite based sensitive electrochemical sensor for detectionof heavy metals

B.S. SreejaDepartment of Electronics and Communication Engineering, SSN College ofEngineering, Kalavakkam-603110, Chennai, TamilnaduCorresponding Email:[email protected]

Contamination of soil, groundwater, and air with heavy metals, such as lead (Pb),mercury (Hg), cadmium (Cd), copper (Cu), zinc (Zn), etc., and is a majorenvironmental problem. Even in trace concentrations, heavy metals present in air,food, and drinking water can bioaccumulate and thus pose major threat to humanhealth. All these heavy metals are carcinogenic causes severe health issues bydamaging kidney, lungs, stomach problems, high blood pressure etc. The commonlyused analytical methods for the detection of these heavy metals include flame atomicabsorption spectrometry, inductively coupled plasma (ICP)-atomic emissionspectrometry, ICP-optical emission spectrometry, ICP-mass spectrometry, X-rayabsorption fine structure spectroscopy combined fluorescence spectrometry,potentiometric ion selective electrode and electrochemical anodic strippingvoltammetry. Among these, the electrochemical method is very popular because ofits many advantages such as high sensitivity, simplicity, reliability, low cost, choiceof sensing materials, etc. It is very important to detect these heavy metals at earlierstage. ZnO is a most friendly environment material which can be used aselectrochemical sensor for the detection of these heavy metals. Further, high affinityby functionalized nanomaterials is a reliable approach to enhance the accumulationof target metal ions on electrode surface for electrochemical detection of heavymetals. These nanocomposites which we synthesized were implemented in real-timemonitoring of heavy metals using vegetables.


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IL – 06

The role of amorphous silicon in solar photovoltaics

P. Balaji BhargavSSN Research Centre, Kalavakkam, Tamilnadu 603110Corresponding Email: [email protected]

Thin Film Solar Cells (TFSCs) occupies a special space in PV cell/moduletechnology. In short to medium term it is most useful for some off- grid nicheapplications like (1) Building Integrated Photovoltaic (2) light weight and flexiblepower sources (3) space applications (4) various other off grid applications includingLED based solar lanterns and other small power applications. In long term whenproduction reaches terawatt range (annually) the material requirement will be a keyfactor where TFSCs will play very significant role. In medium and long term rangesilicon based TFSCs like a-Si, Micromorph and their upgraded versions will playvery important role as the stabilized efficiency is expected to exceed 12% and thematerial and production cost will be very low so that it will compete with c-Si cellseven for power applications. Future projections for PV module technology includesflexible thin film solar modules, thin c-Si modules and HIT cell modules which willdominate the world market. Among these, flexible solar cells are a promising newbreed of solar devices. To reduce processing and manufacturing cost, roll-to-rollprocessing approach must be adopted, because of less floor-space requirement forproduction equipments and allows a higher throughput. The main benefit of thesetypes of cells lies in their portability. They can be rolled-up and stored easily so thattransporting them is simple and convenient. Tandem solar cells, a combination of a-Si and µc-Si layers designated as “micromorph solar cells”, represent a promisingway of overcoming the efficiency limits of single-junction solar cells and reducingthe light-induced degradation related to amorphous silicon thin film solar cells.Flexible thin film silicon solar cells are generally fabricated in substrate/n-i-pconfiguration. For improved efficiencies, various light trapping schemes byincorporating different surface structures are in use. The advantage of micromorphapproach is that it keeps the thickness of the top amorphous silicon layer low, whichin turn reduces the effect of initial light induced degradation of photocurrent(Staebler-Wronski effect). Thin film solar cells in single junction and tandemstructures on flexible substrates are fabricated using roll to roll process by industries


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with reported efficiencies around 9% and 12%, respectively. Still efforts are beingmade to improve the efficiency of the solar cells by incorporating novel materialswith better light trapping techniques.

IL – 07

Metal–Organic frameworks: Functional luminescent materials forsensing applications

J. Kalyana SundarAssistant Professor, Department of Physics, Periyar University, Salem-636 011,Tamil Nadu, India*Corresponding Email: [email protected]

Metal–organic frameworks (MOFs) or porous coordination polymers (PCPs) areopen, crystalline supramolecular coordination architectures with porous facets.MOFs based chemical sensors have developed rapidly in recent years. There havebeen many works concerning this field and interest is still growing. The reason is thatthe specific merits of MOFs can be utilized to enhance sensitivity and selectivity byvarious energy/charge transfers occurring among different ligands, ligand and metalcenters, such as from ligands to metal centers or metal centers to ligands, as well asfrom MOF skeletons to guest species. This presentation intends to provide an updateon recent progress in various applications of different MOF‐based sensors based ontheir luminescent and electrochemical responses towards explosives, volatile organiccompounds, humidity, ions, gas, temperature, biomolecules. MOF‐based sensorsfunction by utilizing different mechanisms, including luminescent responses of“turn‐on” and “turn‐off”, as well as electrochemical responses.

Keywords: Metal–Organic Frameworks, Chemical Sensors, Sensitivity, Chargetransformations, Luminescent responses.


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IL – 08

Overview OF SSN RC modeling activities - indigenously developedDS furnace for growing mc-Si ingot for solar cell applications

M. Srinivasan and P. RamasamySSN Research Centre, SSN College of Engineering, Chennai-603110.*Corresponding Email: [email protected]

Among all the renewable energy sources, PV solar cell plays a main role. Singlecrystal and multi- crystalline solar cells are considered as first generation solar cells.Thin film based solar cells (a-Si, micromorph, CdTe/CdS and CIGS) are consideredas second generation solar cells. Nano-crystalline based dye-sensitized solar cells(DSSCs), polymer-based solar cells and concentrated solar cells are considered asthird generation solar cells. There is lot of crystal growth in several of these solarcells.We have been working on the following three type of solar cells which involvesplenty of crystal growth:

1. mc-Si by DS method.2. TiO2 nano-crystals for DSSCs3. Micromorph& Nano-wire based a-Si solar cells by PECVD.

The majority of PV solar cells are fabricated from bulk silicon crystals, which maybe either single-crystalline or multi-crystalline. A market share ofmono- and multi-crystalline silicon (mc-Si) are more than 90% at present and will be so in theforeseeable future. Single-crystalline wafers typically have better material parametersbut are also more expensive which are grown by Czochralski (Cz) growth process.CZ wafers contain a large amount of oxygen in the silicon wafer. Oxygen impuritiesreduce the minority carrier lifetime in the solar cell, thus reducing the voltage,current and efficiency. In addition, the oxygen and complexes of the oxygen withother elements may become active at higher temperatures, making the waferssensitive to high temperature processing. To overcome these problems, Float Zone(FZ) wafers may be used. Due to the difficulty in growing large diameter ingots andthe often higher cost, FZ wafers are typically only used for laboratory cells and areless common in commercial production. Multi-crystalline silicon (mc-Si) is animportant material with advantages of low-production cost and high conversionefficiency. It has a market share of more than 60% in all photovoltaic materials.Directional solidification (DS) method has become the leading technique for


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producing mc-Si because of its better feedstock tolerance, higher throughput andeasier operation. Solar cell efficiency is decreased by impurities, precipitates, andstructural defects in the mc-Si ingots. The generation and distribution of these areinvestigated using numerical analyses in this paper. Simulation of heat and masstransfer in bulk growth has become an indispensable tool for an efficient, time andcost saving optimization procedure. A global modelling of heat transfer wasperformed to study the generation of creep stress and formation of dislocations inmulti-crystalline silicon at the various growth stages for the various modified DSsystems. The aim is to increase average grain size in silicon multi-crystals and reducethe impurities distribution and dislocation density.

IL – 09

Tailoring the properties of nanohydroxyapatite – a multifunctionalbiomaterial for advanced biomedical applications

E.K. GirijaDepartment of Physics, Periyar University, Salem, Tamil Nadu – 636 011.*Corresponding Email: [email protected], [email protected]

Hydroxyapatite [HA, Ca10(PO4)6(OH)2] is a versatile material that finds applicationsin various fields such as biomedical, catalysis, environment etc. Being bioactive andbiocompatible it is used extensively in orthopaedic, dental and maxillofacialapplications as coatings for metallic implants, powders, porous blocks and hybridcomposites. Recent developments in nanoscience and nanotechnology has offeredunique approaches to overcome the shortcomings of conventional forms of HA andenhance its applications.

Nanocrystalline HA has been prepared through various methods like solid-solidreaction, freeze-drying, spray-drying, sol-gel technique, precipitation methodssolution, emulsion route, microwave assisted synthesis, hydrothermal synthesis usingtemplates, etc. HAp nanoparticles do not show any luminescence and magneticproperties whereas transition metal and rare earth ions substituted HAp shows veryinteresting luminescent and magnetic properties which makes them a biocompatiblecontrast agent for bioimaging applications. Rare earth ions doped apatitenanoparticles are expected to tailor the luminescence and magnetic propertiesessential for bioimaging and therapy applications. Attempts to make apatite based


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magnetic, luminescent and luminomagnetic nanoparticles for bioimagingapplications and therapeutic applications such as hyperthermia, drug delivery etcwill be discussed.

IL – 10

Sun light into electricity through organic & organic-inorganichybrid materials

Arul Varman Kesavan and Praveen C Ramamurthy’sDepartment of Materials Engineering, Indian Institute of Science, Bangalore, India.*Corresponding Email: [email protected]

Electrical energy is an integral part of the human society which can be generatedfrom renewable and non-renewable energy sources. Among the various renewableenergy sources, photovoltaic technology is one of the attractive methods, due to itsability to convert abundantly available sunlight into electrical energy. Research anddevelopment in this area generally aims to obtain higher efficiencies at low cost.Currently, significant research is oriented towards third generation photovoltaicmaterials and technologies which include organic photovoltaics and perovskitephotovoltaics. Both of the aforementioned photovoltaic devices offer practicallyviable efficiencies. However, there are several challenges relating to the stability ofthe materials/devices, thus posing challenges to long term usage. In thispresentation, I am going to give a brief introduction into the working principles,advantages, current trends, shortcomings, and future directions of theorganic/polymer and perovskite photovoltaics.


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IL – 11

Vectorial approach in focal engineering for all optical magneticrecording

K B RajeshDepartment of Physics, Chikkanna Government Arts College, Tiruppur, Tamilnadu,India*Corresponding Email: [email protected]

The increasing trend towards nanoscience and nanotechnology makes it necessary toaddress the key issues of optics on the nanometre scale. Nano-optics addresses thebroad spectrum of optics on the nanometre scale covering technology and basicscience. It aims at studying of optical phenomena on the nanometre scale to measure,fabricate and manipulate individual structures using scanning probe techniques,optical tweezers, high-resolution microscopes and lithography tools. Among them,Focusing with high apertures is important to all discipline requiring highly localizedfield of light. It is not only vital to optical microscopy, but also to optical data storageand a variety of optical spectroscopy techniques, in particular the detection of singlemolecules on surfaces and in solution, where high aperture focusing helps to providehigh sensitivity and spatial localization. Optical trapping also relies on high aperturefocusing, because tight focusing leads to a large field intensity gradient, which isnecessary for trapping microscopic particles. Hence, a quantitative investigation ofthe focal field of high aperture lenses is of paramount importance. Because of thedominating role of polarization in the high NA systems, Classical scalar diffractiontheory simplified with the Fresnel approximation does not give accurate results andis only applicable to low NA or paraxial imaging systems [2]. It loses its validity inhigh NA systems (NA>0.6) and Scalar Debye theory [1], which is a more advancedversion of scalar diffraction theory, does not use the paraxial approximation andconsiders an apodization factor of high aperture systems. However, it still neglectsthe vectorial nature of the light. For tighter focus, where the vectorial properties oflight plays an important role, the vectorial Debye theory is necessary to represent thefield distribution in the focal region of an objective [3]. In this talk, the recentprogress and ongoing efforts on the multiscale and adaptive methods for tightfocusing of laser beam, as well as theoretical issues raised by modelling andsimulation will be discussed. Fast and reliable simulation of focal fields in threespace dimensions remains one of the key challenges of scientific computing. The


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main focus of the talk is to addressing this challenge, particularly on design of binaryand complex phase filters to generate novel focal patterns of sub wavelength scaleunder tight focusing conditions for nano scale applications such as high density alloptical magnetic recording, optical trapping, and semiconductor inspection ect.

References

[1] C. J. R. Sheppard and H. J. Matthews, “Imaging in high-aperture opticalsystems,” J. Opt. Soc. Am. A 4(8), 1354–1360 (1987).

[2] M. Gu, Advanced Optical Imaging Theory (Springer, 2000).

[3] B. Richards and E. Wolf, “Electromagnetic 3.Diffraction in Optical Systems.II. Structure of the Image Field in an Aplanatic System,” Proc. R. Soc. Lond.A Math. Phys. Sci. 253(1274), 358–379 (1959).

Acknowledgement:

This work is supported by the Department of Science and Technology (DST), Indiaunder project SERB- YSS (F.No. 2015/001852).

IL – 12

Ab initio prediction of the high energetic and biological molecules –A validation study

P. Srinivasan1 and A. David stephen2

1PG & Research Department of Physics, Chikkaiah Naicker College, Erode, India2Department of Physics, Sri Shakthi Institute of Engineering and Technology, Coimbatore,India*Corresponding Email: [email protected]

The key importance of the ab initio crystal structure prediction method lies in theapplication area where a successful prediction method can give a good understandingof the crystallisation process, and also the prediction of highly energetic moleculesmight decrease the level of experimental risks. It also got much importance in thefield of pharmaceuticals where the prediction of organic drug molecules with aspecific action may create a revolution. Organic drug molecules are flexiblecompared to CHNO-based energetic crystals. Such flexible molecules have thetendency to show high degrees of polymorphism. Presence of a polymorph of anorganic molecule in a crystal structure can differently affect the action of the organicmolecule or alter the molecular geometry, which may lead to the development of anew drug or to opt out the negative effect of the concerned drug system. The crystal


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structure prediction method allows the theorists to discover new polymorphs of suchmolecules. In a different way, some polymorphs can have good application values.The current aim of the ab initio crystal structure prediction is to find the possibleconformers of the flexible novel polymorphic/High energetic molecule using gasphase optimisation with an MP2/6-31G(d,p) basis set, and the lattice energyminimization in the presence of a repulsion-dispersion electrostatic potential.

Keywords: Ab initio crystal structure prediction; polymorphs; PES scan; latticeenergy minimisation; HEDM.

IL – 13

Effect of metal ion dopants on the properties of nonlinear opticalcrystals

M. SelvapandiyanDepartment of Physics, Periyar University PG Extension Centre, Dharmapuri-636-701, Tamil Nadu, India.*Corresponding Email: [email protected]

Nonlinear optical materials have been synthesized and grown by many researchersfor the past four decades due to their versatile properties, such as low laser damagethreshold, high third order nonlinear optical susceptibility, and high chemicalflexibility [1-2]. Due to unique properties the multifunctional NLO materials attractsthe number of fields of applications like Optical signal processing, Optical switching,Lasers, Sensors, environment monitors and Optical communications [3-6]. Today,the word eagerly expecting for the high quality, better efficient and low cost opticalmaterials because of all the peoples of the globe are directly or indirectly living withthe optical materials. In this connection, we have been trying to find the new qualityof the optical crystals for the past one decade. For that point in mind, I have plannedto give the talk on NLO SA crystals, characterization and their recent keyapplications. Single crystals of pure and NaCl doped sulphamic acid (SA) was grownby sovent evaporation technique at room temperature. The lattice parameters weredetermined by using single crystal X- ray diffraction analyses. The presence ofdopant in the grown crystal was affirmed by EDAX analysis. The band gap energywas found to be 5.37 eV and 5.21 eV for pure and NaCl doped SA crystal. The PLemission was observed at 335 and 424 nm for pure and 340 and 428 nm for dopedSA crystal. TGA/DTA analysis revealed that the grown crystals were thermally


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stable up to 331°C and 334°C for pure and NaCl doped SA. Vickers microhardnessstudy reveals that the hardness of the crystals is increase with increasing load. Thephotoconductivity study shows that the grown crystals are negative photoconductivenature. The LDT indicate the grown crystals have good resistance to laser radiationthan a standard KDP crystal. Nonlinear refractive index, nonlinear optical absorptionand third order nonlinear optical (TONLO) susceptibility was estimated by using Z-scan technique.

Keywords: Nonlinear Optical materials; Crystal growth; Luminescence; X-raydiffraction; Z-scan technique; Laser damage threshold

References

[1] T. Pal, T. Kar, G.Bocelli, L.Rigi, Cryst. Growth Des.3 (2006) 13-16.[2] P.N Prasad, D.J. Willams, Introduction to Nonlinear Optical Effects on

Molecules and Polymers, Wiley, New York, 1991.[3] D.S. Chemla, J. Zyss, Nonlinear Optical Properties of Organic Molecules and

Crystals, Vols. 1 and 2, Academic, Orlando, 1987.[4] W.Zhang, R.G.Xiong, Chem. Rev. 112 (2012) 1163 – 1195.[5] M.Wutting, N.Yamada, Nat. Mater. 6 (2007) 824 – 832.[6] Z.H.Sun, T.I.Chen, J.H.Luo, M.H.Hong, Angew. Chem. Int. Ed.

51(2012)3871-3876.

IL – 14

Growth and physical investigation of AgIn0.5Ga0.5S2 single crystal formid-IR applications

N. Karunagaran1 and P. Ramasamy2

1Department of Physics, SRM Institute of Science and Technology, Chennai2Center for crystal growth, SSN College of Engineering, Kalavallam-603110*Corresponding Email: [email protected]

AgGaS2 is one of the I–III–VI2 ternary semiconducting compounds that crystallizesin the chalcopyrite structure which belongs to the 4¯ 2 m point group. AgGaS2 haslarge nonlinear optical coefficients (d36 39 pm/V) and excellent transmission in themid-IR (1–18 mm) range [1]. It is one of the attractive IR nonlinear optical materialsfor device applications due to its unique properties, including large nonlinear optical


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devices such as optical parametric oscillators, different frequency conversions,second harmonic generators, etc. Silver Indium Gallium Sulfide (AgIn0.5Ga0.5S2)belongs to the family of AIBIIIC2

VI ternary compound semiconductors whichcrystallize in the chalcopyrite structure. The growth of AgIn0.5Ga0.5S2 single crystalis a two step process. Synthesis of the polycrystalline material from the startingelements is achieved using melt temperature oscillation method. The synthesizedmaterial is used to grow a single crystal. The AgIn0.5Ga0.5S2 single crystals have beengrown by the vertical Bridgman technique. The synthesized AgIn0.5Ga0.5S2

polycrystalline charge was confirmed by powder XRD. The peak positions are ingood agreement with the powder diffraction file. Thermal property was analyzedusing TG-DTA technique. The melting point of the crystal is 896 ºC and freezingpoint is 862 ºC. The unit cell parameters were confirmed by single crystal X-ray. Thegrown crystal was subjected to IR transmission.The stoichiometric composition ofAgIn0.5Ga0.5S2 was measured using energy dispersive spectrometry (EDS).

IL – 15

Mesoporous carbonated hydroxyapatite nanorods production viamicrowave-assisted hydrothermal synthesis with tunablecharacteristics for different biomedical applications

Gopalu KarunakaranaDepartment of Fine Chemistry, Seoul National University of Science andTechnology, 232 Gongneung-ro, Nowon-gu, Seoul 01811, Korea* Corresponding Email: karunakarang5@ seoultech.ac.kr

Currently production of mesoporous carbonated hydroxyapatite nanorods (HAp) isgreat need for different biomedical applications. As mesoporous carbonatedhydroxyapatite are highly biocompatible and biologically active. Thus, in this studywe have produced mesoporous carbonated hydroxyapatite nanorods usingmicrowave-assisted hydrothermal technique. This technique is very unique and leadsmesoporous materials rapidly. In addition, we have also used sodium dodecyl sulfate(SDS) as an organic modifier for tuning the nanoscale characteristics. The completephysico-chemical properties of the synthesized nanoparticles were characterizedusing different techniques. The synthesized nanoparticles are nanorods with 20–45nm of width, and 55-100 nm of length containing specific surface area of 48m2 g-1.The obtained results revels the formation of mesoporous rod shaped carbonated HAp


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nanoparticles due to the microwave treatment. Further, SDS also played a major rolein tuning the structure and morphology of HAp by acting as a capping and reducingagent. Furthermore, the SDS also altered the pore volume and pore size of thenanoparticles. Thus, it is clear from this research that in combination of using organicmodifier SDS and along with microwave treatments can rapidly produce mesoporouscarbonated hydroxyapatite nanorods (HAp) which is the major thrust area fordifferent biomedical applications.

Keywords: Mesoporous carbonated hydroxyapatite, Sodium dodecyl sulfate,Nanorods, Microwave-assisted hydrothermal synthesis, Biomedical applications..

IL – 16

Development of metal-based chemosensors for pyrophosphatedetection in PCR amplified DNA products

Anbu Sellamuthu KooduthuraiUniversity of Hull, United Kingdom* Corresponding Email: [email protected]

Inorganic pyrophosphate (PPi) is biologically important anion which plays severalcrucial roles in an extensive range of cellular metabolic processes, including enzymecatalysed DNA replication and telomere elongation. Quantification of PPi levels inlive cells can offer critical information on DNA replication. The PPi offers theadvantage of identifying cancers at early stages since it is the major by-product oftelomerase activity, which takes place in almost all human tumours but not inadjacent healthy tissues. Hence, it can be used as an early-stage cancer diagnosticbiomarker by monitoring the telomere elongation reaction. Therefore, the design anddevelopment of PPi responsive sensor systems is essential and promising field ofearly-stage cancer diagnosis research. In this context, I have developed a repertoireof dizinc (II) complexes for fluorescent detection of DNA in polymerase chainreaction (PCR) products.


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Graphical Abstract:

IL – 17

Development of high quality and large size 4-nitrophenol (4NP)derivative nonlinear optical (NLO) single crystals: A new and novellow cost technique for crystal growth

Muthu Senthil Pandian* and P. RamasamySSN Research Centre, SSN Institutions, Chennai-603110, Tamilnadu* Corresponding Email: [email protected]

Gravity driven concentration gradient is used in the uniaxially solution-crystallization method of Sankaranarayanan-Ramasamy (SR). TGS, GPI, KAP,SSDH, DGZCD, DGBCM, benzophenone and many more crystals have beensuccessfully grown by SR method. Longest benzophenone crystal having dimensionof 1350 mm length and 55 mm diameter was grown for the first time in solutiongrowth by SR method. Starting with a thin plate as seed a large size crystal can begrown. The physical properties and crystalline perfection of the SR method growncrystal is normally superior to the conventional method grown crystals. The qualityof the SR method grown crystals has been improved by several modifications madein SR method. The impurity segregation cannot be avoided in the existing SRmethod. So we planned to introduce the RSR method for growing good quality,unidirectional single crystals. The effect of rotation on unidirectional crystal growthmethod (Rotational Sankaranarayanan - Ramasamy (RSR)) has been proposed forthe first time. The organic nonlinear optical 2-Aminopyridinium 4-nitrophenolate 4-nitrophenol (2APNP) crystals have been grown by (i) conventional slow evaporation,(ii) Sankaranarayanan-Ramasamy (SR) method and Rotational SR (RSR) method.The grown 2APNP crystals were subjected to various studies like HRXRD, laserdamage threshold, chemical etching, Vickers microhardness, birefringence, UV-Vis


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NIR, dielectrics and piezoelectrics. The Rotational Sankaranarayanan-Ramasamy(RSR) method grown crystals show excellent optical, mechanical, dielectric andpiezoelectric behavior and higher laser damage threshold capability compared to theconventional and normal SR method grown crystals. HRXRD and etching studiesshowed that the quality of the RSR method grown crystal is better than conventionaland normal SR method grown crystal. The Rotational Sankaranarayanan-Ramasamy(RSR) method can be used to grow single crystals along a specific crystallographicdirection such as the phase matching direction in nonlinear optical (NLO) crystals.The unidirectional crystal growth method is ideally suited for crystal growth alongthis direction to obtain large size crystals required for obtaining SHG elements withminimum wastage. In addition, the unidirectional solution crystallization usuallyoccurs at around room temperature; much lower thermal stress is expected in thesecrystals over those grown at high temperatures. Successful development of thisunidirectional method will provide the technology to produce crystals at a yield closeto 100% and easy scaling-up process.

IL – 18

Fabrication of CeO2/TiO2 hybrid anode for enhanced photo currentefficiency of dye sensitized solar cells

M. Karl Chinnu1, S. Karthikeyan1, M. Arivanandan2 and R. Jayavel2

1Department of Physics, Dr. Ambedkar Government Arts College, Vyasarpadi,Chennai-600039, India2Centre for Nanoscience and Technology, Anna University, Chennai-25, India* Corresponding Email: [email protected]

CeO2 nanocrystal was successfully synthesized by simple Sonochemical method. Itsphoto voltaic performance wasinvestigated with TiO2 nanostructure in an effort toenhance the light conversion efficiency of DSSCs. The highest short circuitcurrentwas measured among them, which was proved to be related to the fastelectrons transferred in the Photo-anodes. CeO2 has high band gap energy andconduction band of both stable Ce3+ (4f15d0) and Ce4+ (4f05d0) oxide states,owing tothe remarkable redox property and oxygen storage capacity. The Ceria changes in theconduction band of TiO2, due to theunoccupied Ce-4f trap states in the band gap, andreduction of Ce4+ to Ce3+ when electrons are injected in the photo anode. The ceriumoxide dopedTiO2photoanodes with special electrochemical propertieswhich strongly


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influence the performance of DSSCs. The PCE of the CeO2/TiO2anode cell wasconspicuously improved by loading the CeO2 and the maximum PCE was 17%. Theoverall solar to electric energy conversion efficiency was about17% forCeO2/TiO2(AM-1.5, 100 mW/cm2) compared with pristine anode.

Keywords: CeO2/TiO2hybrid anode, DSSCs, Photocurrent, impedance, electron lifetime.

IL – 19

Hybridization and Gene Flow of Lentil Using the New Potential Toolof Embryo Rescue

Shyamali Saha* and Monika LulsdorfDepartment of Plant Sciences, University of Saskatchewan, Saskatoon, Canada* Corresponding Email: [email protected]

Lentil is an important grain legume having a good source of protein as comparedwith cereals for human diet. A narrow genetic base of cultivated lentil has hinderedthe productivity of lentil through breeding program, where as wild species areimportant reservoir of potential genes to broaden the genetic base and introduceuseful traits for agricultural requirements. Efficient embryo rescue techniques play animportant role in the utilization of valuable traits from wild species into cultivatedlentil to overcome the reproductive barrier. Removal of integuments from ovule after14 days aged zygotic embryo in the media containing 4-Cl-IAA performedsuccessful hybrid development though inter-specific crosses of five wild Texas withLens culinaries. The advantage of lentil hybrid plantlet in vivo grafting on Faba beanover in vitro rooting are discussed. In this study, an efficient and simple embryorescue protocol is not only thoroughly described but also for obtain F2 seeds frominherently weak zygotic embryo from wide hybridization, as well as shortening thebreeding cycle are presented.


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Contributory OralAbstracts


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OP – 01

Fabrications of magnetic responsive hydroxyapatite nanoplatform:In vitro release of chemo drugs for cancer therapy

K. Sangeethaa,*and M. Ashoka

aDepartment of Physics, National Institute of Technology, Tiruchirappalli, India.*Corresponding Email: [email protected]

In this work, a combined, multifunctional platform, which was devised for thesimultaneous application of magnetic hyperthermia and the delivery of the antitumordrug methotrexate, is described and tested in vitro. The system consists of magnetiteparticles embedded in a hydroxyapatite, designed to make them biocompatible. Themethotrexate loaded particles are tested regarding their ability to release it whileheating the surroundings by magnetic hyperthermia, in principle their chances asantitumor agents. Upon alternating magnetic field, the novel nanoparticles couldgenerate hyperthermia temperature increase within a short time and facilitate therelease of encapsulated chemo drugs, which were confirmed by induction heatingeffect curves, and the drug release assay in vitro. The results indicate that themagnetic hydroxyapatite nanoparticles exhibit enhanced chemotherapy efficacytowards cancer cells, owing to successful magnetic guidance and thermo-responsiverelease which give these nanoparticles great potential as therapeutic agents forsynergetic chemo-hyperthermia combined therapy.

OP – 02

Multifunctional nanoparticles for multimodal imaging and photo-magnetic hyperthermia therapy

S. Karthi*, Ruimin Xing and Shanhu LiuCollege of Chemistry and Chemical Engineering, Henan University, Kaifeng475004, P.R. China*Corresponding Email: [email protected]

Despite great efforts have been devoted to identify an efficient approach to fightagainst cancer over the past decades, precise detection and treatment of cancer at anearly stage is still a big challenging task. The combined use of complementarymultimodal imaging diagnostic, such as MRI, X-ray, fluorescence imaging, CT


45

imaging and photoacoustic imaging (PAI) and therapeutic functions of surgery,chemotherapy, radiotherapy and hyperthermia therapy in one single intelligentmultifunctional theranostic platforms are highly desirable. Among the emergingtheranostic approaches, integrating the noninvasive hyperthermia therapy mainlyincluding photothermal therapy (PTT) and magnetic hyperthermia therapy (MHT)with additional multimodal imaging components that allow simultaneous accuratemonitoring and cancer destruction with enhanced cancer killing specificity andreduced side effects have become considerably attractive.

In this work, we propose to an intelligent biocompatible magnetic nanoparticleencased with luminescent CaP nanoagents with simultaneously remarkablePTT/MHT synergetic therapeutic efficiency as well as multimode accurate tumorimaging diagnostic through an engineering design. The high biocompatibility, multi-ion exchange ability and the possibility to synthesize nanosized crystals endowedwith magnetic and luminescent properties made researchers to explore the possibilityof making calcium phosphate (CaP) a multimodal imaging and therapy agent. Thebiocompatible magnetic nanoparticle encased with luminescent CaP nanostructurewas fabricated by hydrothermal method. Multimodal imaging capability of thedeveloped material was investigated by NIR fluorescence imaging, magneticresonance imaging (MRI). In vitro heat generation ability of multifunctional CaPnanoparticles was determined with help of photothermal therapy and heatinginduction coil apparatus.

OP – 03

Theoretical investigation on the inhibition mechanism of antiviraldrugs towards the influenza A (H1N1) virus neuraminidase: Astructure based drug design

M. Sivanandama, P. Parasuramanb* and K. Velurajac

aLaboratory of Biocrystallography and Computational Molecular Biology,Department of Physics, School of Physical Sciences, Periyar University, Salem-636011, Tamil Nadu, IndiabDepartment of Physics, Bannari Amman Institute of Technology, Sathyamangalam,Erode - 638 401, Tamil Nadu, IndiacSchool of Advanced Sciences, VIT University, Vellore - 632 014, Tamil Nadu, India* Corresponding Email: [email protected]


46

Influenza A (H1N1) virus is the prominent subtype of influenza A virus which isresponsible for the most common cause of human influenza and is often called asswine flu. Inhibition of this subtype influenza A (H1N1) virus [H1N1A] enzymaticmechanism leads to cure the pandemic swine flu. The most familiar drugs used tocontrol the H1N1A are Oseltamivir, Oseltamivir carboxylate, Peramivir andZanamivir. To enhance the intermolecular interactions between the drug moleculesand the receptor, molecular docking study is carried out for the four drug moleculestowards H1N1A. The study confirms that the strong hydrogen bonding interactionsand hydrophobic contacts have been formed with the binding site residues ofH1N1A. The calculated binding energy for the drug molecules such as Oseltamivir,Oseltamivir carboxylate, Peramivir and Zanamivir with the receptor H1N1A virusare -6.76, -6.89, -7.25 and -6.81 kcal/mol respectively. Oseltamivir may be the bestinhibitor for influenza H1N1A virus based on the analysis of hydrogen bondinginteractions, hydrophobic contacts and the binding energy calculations,. The

proposed conformer of OseltamivirH1N1A will be used as a model to design thenew drugs with enhanced efficiency to treat influenza virus.

Graphical Abstract:

OP –04

Green chemistry - Recent adances in new oxidisers for rocketpropulsion

K. UmamaheswariDepartment of Chemistry, Muthayammal college of Engineering, Kakkaveri,Rasipuram, Namakkal – 637 408*Corresponding Email: [email protected]


47

Ammonium perchlorate (AP) the work horse of oxidisers in solid rocket and missilepropulsions, exhibits various environmental issues resulting from the release ofperchlorate in to ground water, which have been directly linked to thyroid cancer.Furthermore, the generation of hydrochloric acid causes the depletion of the ozonelayer and leads to the high concentration of acid rain. Now a days considerableefforts have been devoted to developing solid propellants using green oxidiserswhich demonstrate less hazards and environmentally friendly chlorine freecombusted products although many candidates for ammonium perchloratereplacement have been identified, most of them are far from being practicallyemployed in real applications, because of the number saviour difficulties, includingcost.

In this review the potential green chemical for use as oxidizers are highlighted. Thereview interesting physiochemical chemical properties and performance. After aquick definition of green solid propellants and their main ingredients, the currentstatus of ammonium perchlorate propellants issues is discussed in light of possiblesubstitutions with potential green ingredients. Particular attention is paid to be recentadvances in the green oxidizers, their production and their characteristics. Theadvantages and short coming of various green oxidizers for specific and potentialpropellant uses are also discussed together with the attempt made to overcome theseproblems. As a consequent effort will certainly continue to seat ammoniumperchlorate alternative and efficient green oxidizers for solid rocket propellant in thenear future.

OP – 05

An investigation on photocatalytic and antibacterial performance ofGO based ternary nanocomposite under visible light irradiation

S. Shanavasa, A. Priyadharsana and P. M. Anbarasana*

aDepartment of Physics, Periyar University, Salem- 636 011, Tamil Nadu, India.*Corresponding Email: [email protected]

A one step methodology for the synthesis of novel La2CuO4/CeO2/rGO hybridnanocomposite was demonstrated via solvothermal assisted homogeneousprecipitation method. The phase, crystal structure, surface morphology and elementalcomposition of synthesized nanocomposite was characterized by X-ray diffraction


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(XRD), Fourier transform infrared spectroscopy (FT-IR), field emission scanningelectron microscopy (FE-SEM), energy dispersive X-ray spectroscopy (EDX) andHigh resolution transmission electron microscopy (HR-TEM). Absorption range andband gap energy were investigated by UV−Vis diffuse reflectance spectroscopy(UV-Vis DRS). The photocatalytic examination to degrade a target pollutant(Reactive Blue 160) and inactivation of both positive and negative bacterial strains inaqueous solution were investigated under the illumination of visible light. Thecombination of rGO with binary nanocomposites leads to a better photocatalytic andantibacterial performance than other bare synthesized materials. The enhancedphotocatalytic and antibacterial activity of La2CuO4/CeO2/rGO is promising for thefurther application of visible light driven photocatalyst in polluted water treatment.

Keywords: Nanocomposite, rGO - Reduced Graphite oxide, Solvothermal,Photocatalyst, antibacterial activity.

OP – 06

Investigation on 2-amino 4-methylpyridinium salicylate singlecrystal for third order NLO applications

J. JayaprakashDepartment of Science and Humanities, Sri Krishna College of Engineering andTechnology, Coimbatore – 641 008, Tamil Nadu, India*Corresponding Email: [email protected]

This work provides a detailed information of 2-amino 4-methylpyridinium salicylatesingle crystals by means of growth procedure, structural, optical and variousempirical characterizations. 2A4MPSL single crystals have been grown successfullyfrom slow evaporation solution growth technique at ambient temperature using wateras solvent. The grown crystal has been subjected to the Single crystal XRD studies toconfirm the crystal structure. The grown single crystal was analyzed by FT-IR, UV-Visible spectrum, photoluminescence, dielectric, TGA/DSC, MDSC, Vickersmicrohardness, photoconductivity, laser damage threshold and z-scan measurements.The results show that the crystal is of high quality and can be used as a potentialmaterial for third harmonic generation applications.

Keywords: Pyridine, NLO, Crystals, Photoconductivity, Salicylic and Z-scan.


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OP – 07

Thermo luminescence and Photo luminescence studies on YAlO3

single crystals

M. Suganya1, P. Vijayakumar2, Amirdha Sher Gill1 and O. Anna Lakshmi3

1School of Science and Humanities, Sathyabama Institute of Science and Technology,Chennai-600119, Tamil Nadu, India.2X-ray Scattering & Crystal growth Section, Condensed Matter Physics Division,Materials Science Group, IGCAR, Kalpakkam-603102, Tamil Nadu, India.3Radiological & Environmental Safety Division, IGCAR, Kalpakkam-603102, TamilNadu, India.*Corresponding Email: [email protected]

YAlO3 single crystal has been grown by Optical Floating Zone Technique. Thesingle phase was confirmed by Powder X-ray diffraction pattern which exhibitsorthorhombic structure. The spectroscopical studies are carried out to analyze itsabsorption, transmission and luminescence properties. Using UV-vis-NIR absorptionspectra, the cut off wavelength found to be 299 nm and hence optical band gap valuehas been calculated as 4.2 eV using Tauc plot. The photoluminescence emissionspectra confirm violet emission. The thermoluminescence glow curve analysis forgrown crystal gives the glow peak at 296 ºC for gamma ray irradiation and respectivekinetic parameters have been calculated.

Graphical Abstract


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OP – 08

Synthesis, structural, vibrational, thermal, dielectric, opticalproperties and quantum chemical studies of third order NLO singlecrystal for optical power limiting applications

V.Siva1*, S. Asath Bahadur1, A. Shameem1 and S. Athimoolam2

1Department of Physics, International Research Centre, Kalasalingam Academy ofResearch and Education, Krishnankoil - 626 126, India.2Department of Physics, University College of Engineering Nagercoil, AnnaUniversity, Nagercoil- 629 004, India.*Corresponding Email: [email protected]

A new Nonlinear optical single crystal of 4- (dimethylamino) benzaldehyde (2-pyridyl) hydrazone has been successfully grown by the slow evaporation techniqueusing methanol as solvent and the corresponding structural, quantum chemicalcalculations and physical properties have been reported. The grown crystals werecharacterized by thermal, mechanical, dielectric and optical studies. The thermalstability of grown crystals were confirmed by Thermogravimetry / Differentialthermal analysis. Thermal stability of the compound was entired upto 208°C. Theoptical absorption studies showed that the grown crystal transmit most of incidentradiation in the range of 200 to 800 nm. Z-Scan technique was employed to observethe third order nonlinear optical susceptibility and was observed to be high. Theoptical limiting behaviour of the grown crystal is recognized mainly to nonlinearrefraction. Quantum chemical calculations of the compound molecular orbital,Mulliken charge, molecular electrostatic potential and hyperpolarizability parameterswere also discussed. The first order and second order hyperpolarizability values werecalculated by density functional theory.

Keywords: Crystal structure; Hydrogen bonding assembly; TG/DTA; NLO, DFT


51

Graphical Abstract:

Optimized Structure with atomic numbering for DFT/6-311++G(d,p)

OP – 09

Synthesis, growth, spectral, thermal and optical studies on a neworganic NLO crystal: Triglycine Perchlorate

E. Selvakumar and A. ChandramohanPostgraduate and Research Department of Chemistry, Sri Ramakrishna MissionVidyalaya College of Arts and Science, Coimbatore - 20, Tamilnadu, India.*Corresponding Email: [email protected]

A new third order nonlinear optical material Triglycine perclorate (TGP) has beensynthesized and colourless transparent rectangular shaped single crystals weregrown by slow solvent evaporation solution growth technique at room temperaturefrom its aqueous solution. The 1H and 13C NMR spectra were recorded to establishthe molecular structure of the synthesized compound. The crystal structure of TGPhas been determined by single crystal XRD analysis and it belongs to monocliniccrystal system with space group P21/m. Fourier transform infrared (FT-IR) spectralstudy has been carried out to identify the various functional groups present in the titlecompound. The UV-Vis-NIR transmittance spectrum was recorded in the range 200-2500nm, to find the optical transparency window and lower cut off wavelength of thetitle crystal. The thermo gravimetric (TG) and differential thermal analyses (DTA)were carried out to establish the thermal stability of the material.


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Graphical Abstract:

OP – 10

A comparative study of naturally and synthetically derivedbioceramics for biomedical applications

M. Mathinaa, S. Sridevia, L. Kavithab and D. Gopia,*aDepartment of Chemistry, Periyar University, Salem 636 011, Tamil Nadu, IndiabDepartment of Physics, School of Basic and Applied Sciences, Central University ofTamil Nadu, Thiruvarur- 610 005, Tamil Nadu, Indiaa*Corresponding author. Department of Chemistry, Periyar University, Salem 636011, Tamil Nadu, India.*CorrespondingEmail:[email protected],[email protected] (D. Gopi)

Hydroxyapatite (HAp) is a bioactive material, similar to the mineral constituent ofnatural bone and teeth. Naturally derived HAp is currently used in various types oforthopedic and maxillofacial applications because of their osteoconductive propertiesand tissue responses. In recent years, the use of natural biogenic structures andmaterials for medical purpose has been motivated by limitations in producingsynthetic materials. Our study mainly focused to synthesis of hydroxyapatite frombiogenic waste (squid bone) material. Naturally derived HAp can develop a tightbond with bone tissue, which is stable towards bio resorption and has no adverseeffects on the human body. For these reasons the scope of the present work isfocused on the synthesis of HAp derived from biogenic waste for biomedicalapplications. Our results showed that biogenic HAp is non-toxic and improve the celladhesion. All the as-synthesized sample were investigated by Fourier transforminfrared spectroscopy (FTIR), X-ray diffraction (XRD), Field emission scanningelectron microscopy (FESEM) and Energy dispersive X-ray analysis (EDAX).


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Keywords: hydroxyapatite, squid bone, biomedical application

Graphical Abstract:

OP – 11

Optimizations of pH and precursor ratio for the synthesis ofwurtzite structured Cu2ZnSnSe4 thin film for photovoltaicapplication

A. Murugan, V.Siva, A. Shameem and S. Asath Bahadur*Department of Physics, International Research Centre, Kalasalingam Academy ofResearch and Education, Krishnankoil-626 126, Tamil Nadu, India.*Corresponding Email: [email protected]

The Cu2ZnSnSe4 (CZTSe) thin films have been deposited on glass substrate bysimple and low cost successive ionic layer adsorption and reaction (SILAR) method. Theas-prepared films were annealed at elevated temperature by slow heating process.The structural, optical, electrical, morphological and elemental composition of theannealed film was characterized. X-ray diffraction analyses confirmed the formationof wurtzite structure and its structural parameters were calculated. The surfacemorphology and elemental composition of film have been examined by scanningelectron microscopy (SEM) equipped with energy dispersive X-ray (EDX) analysissystem. The optical property was analyzed using UV-Vis. Absorbance spectroscopyin the wavelength ranging from 400 to 1100 nm. The current-voltage (I-V)measurements were also examined. The optical band gap of the deposited film was


54

estimated using Tauc’s plot ant it was found to be 1.51 eV. The prepared CZTSe filmshows good optical absorption in the visible region

Keywords: CZTSe; SILAR; wurtzite structure; SEM-EDX; Absorption spectrum

OP – 12

Theoretical investigation on the intermolecular dihydrogen bondingbetween alkyne and alkali metal hydride

D. Parimala devi1*, A. Abiram1 and G. Praveena2

1Department of Physics, Karunya Institute of Technology and Sciences, Coimbatore– 6411142Department of Physics, PSGR Krishnammal College for Women, Coimbatore –641004*Corresponding Email: [email protected]

In this work, B3LYP/6-311++G** and MP2/6-311++G** level of theories were usedto investigate the molecular properties of the intermolecular dihydrogen bondforming alkyne (C2H2, C3H4, C4H6, C5H8) - alkali metal hydride (M=Na) complexes.The structural parameters and interaction energies of H…H containing complexesobtained by both B3LYP and MP2 methods were calculated and compared. Thevibrational frequency, natural bond orbital (NBO), quantum theory of atom inmolecules (QTAIM) and molecular electrostatic potential (MEP) analyses for theconsidered structures were performed. The calculated vibrational frequency ofabove-mentioned complexes indicates that red and blue shifts are occurring in the C-H and H-M bonds. Topological parameters derived from the QTAIM analysis showsthat for all the complexes exhibit non-covalent interaction. Finally, the best suitablealkyne structure that forms dihydrogen bonding with the alkali metal hydride(M=Na) were identified.

Keywords: Dihydrogen bond; metal hydride; alkyne; QTAIM; B3LYP; MP2


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Graphical Abstract:

C4H6 with alkali metal hydride (M=Na)

OP – 13

Optical and thermal properties of NLO single crystal: sodium acidphthalate hemihydrate

R.Jothia, P. Sasikumarb

aDepartment of Physics, Laxminarayana Arts and Science College for Women,Dharmapuri 636 705, Tamil Nadu, IndiabDepartment of Physics, PSA College of Arts and Science Dharmapuri, Tamil Nadu,India

Good quality optical single crystals of Sodium acid Phthalate (NaAP) single crystalwere grown by different techniques such as solvent evaporation, slow cooling andseed rotation techniques. Transparent and optically good quality single crystals wereobtained from, seed rotation technique. X-ray diffraction analysis confirms that thecrystal belongs to orthorhombic system with a space group of B2ab. Spectroscopicanalysis were carried out confirm the presence of functional groups present in thecompound. Linear and non-linear optical properties of the grown crystals wereconfirmed through spectroscopic and through harmonic generation measurements.These preliminary investigations confirm that the present sodium acid phthalatecrystals can be a potential candidate for nonlinear optical applications. The resultsare discussed in detail.


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OP – 14

Molecular docking and 3d-pharmacophore modeling to study theinteractions of purine derivatives with thyroid hormone receptoralpha1

I. Ragavana, P.M. Anbarasana* and A. Prakasamb

aDepartment of Physics, Periyar University, Salem 636 011, Tamilnadu, India.bDepartment of Physics, Thiruvalluvar Goverment Arts College, Rasipuram 637401,Tamilnadu, India.*CorrespondingEmail:[email protected],[email protected]

A comparative experimental and first-principles approach based on densityfunctional theory (DFT) study of ground stategeometric structures, calculation forinteractionenergies, molecular electrostatic potentials (MEP) mapping, natural bondorbitals (NBO) analysis, vibrational properties as well as electronic structures of theN-((2,3-dihydrofuran-2-yl) methyl)-9H-purin-6-amine (N2DFPA) System wereinvestigated. The vibrational spectra including Fourier-transform infrared and FT-Raman for 6HPhave been recorded. The non-linear optical (NLO) behaviour ofN2DFPA has been identified from the results of hyperpolarizability values and thehighest unoccupied molecular orbital (HOMO) and lowest unoccupied molecularorbital (LUMO) of the molecule slips below the Fermi level and becomes partiallypopulated upon adsorption. The Chemical reactivity descriptors such as chemicalhardness, chemical potential, softness, electrophilicity, nucleophilicity are calculated.The combined DFT study provided a framework towards investigating and designingadsorption systems at a molecular level, indicating Molecular docking studies ofthese derivatives can be utilized to the thyroid cancer therapy and it leads a way tocreate platforms for hormonal therapy of thyroid cancer treatments.

Keywords: DFT, Chemical reactivity, Vibrational spectral Properties andMolecular docking analysis.


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OP – 15

Modelling and simulation of 250 MHz ST-X quartz based SAWdelay line for potential gas sensing applications

Banu Priya R1, Venkatesan T2 and Haresh M Pandya2*

1Department of Physics, Gobi Arts and Science College, Gobi, Tamilnadu-6384532Department of Physics, Chikkanna Government Arts College, Tirupur, Tamilnadu-641 602.*Corresponding Email:[email protected]

Right now extensive efforts are focused on gas sensor which plays a key role indomestic and industrial fronts and also help to keep a cleaner environment by givingan untimely warning of leakage of toxic and harmful gases. So, there is an imperativeneed to develop the reliable and selective sensors to detect these harmful and toxicchemical/vapors with fast response time and recovery time for homeland security.Even though various plentiful gas sensing technologies are available, SAW deviceshave received better interest in recent years as gas sensors due to their low cost,sensitivity, simple handling, portability and small size. This paper presents thefrequency response of a 250 MHz ST-X Quartz SAW delay line device fabricatedwith uniform IDTs. SAW device design parameters like piezoelectric substrate,structure of IDT, device frequency and number of finger pairs etc., are optimized andits frequency response studied based on Impulse Response Model, Equivalent CircuitModel and Coupling of Modes Model via a unique custom made MATLABalgorithm. The results were used to calculate the insertion loss and bandwidth ofSAW delay line using 46.5 (Single/Double) IDT finger pairs. The results obtainedare analyzed to eventually help in the valuable design, development and modelling ofsuch devices for potential applications in specific sensors. Modelled results are alsocompared with experimental results and the validation study performed presentsgood agreement between model and experiment.

Keywords: Surface Acoustic Wave, Interdigital Transducer, Impulse ResponseModel, Equivalent Circuit Model, Coupling of Modes Model, Sensors.


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OP – 16

Applications of nanofluids in heat pipe solar collector - A review

N. Jayanthia, M. Venkateshb,* and R. Suresh Kumarc

aDepartment of Physics, R.M.K.College of Engineering & Technology, ChennaibDepartment of Physics, K.S.Rangasamy College of Arts and Science (Autonomous),Tiruchengode.cDepartment of Physics, R.M.K.Engineering College, Chennai*Corresponding Email: [email protected]

Nowadays, solar energy is considered as clean, free and renewable energy withminimum environmental effects. Solar energy is the most sustainable form of energyamong other renewable energy sources. Due to increased demand of energy, limitedavailability of fossil fuels, more attention is given to solar energy applications.Nanofluids can be defined as a solid-liquid composite materials consisting ofnanometer sized solid particles, fibers, rods or tubes suspended in different basefluids. Choi from Argonne National Laboratory observed experimentally that theaddition of high thermal conductivity metallic nano-particles into the base fluid wasincreased the thermal conductivity of these fluids and improve their overall heattransfer capability. Nanofluids have good properties of radiation, absorption, highthermal conductivity, high specific surface area and low pumping power. Solarenergy collectors are a special kind of heat exchangers that transform solar radiationenergy to an internal energy of the transport medium. The major component of anysolar system is the solar collector. It is a device which absorbs the incoming solarradiation, converts it into heat, and transfers this heat to a fluid flowing through thecollector. The performance of the solar collector depends upon the properties of theworking fluid which are used to maximize the solar energy absorption in the solarcollector. The heat pipe solar collector consists of a heat pipe inside a vacuum –sealed tube. It has significant advantages over the flat-plate solar collector in terms ofthe heat loss. The major challenge is how to enhance the efficiency of the device toconvert the solar energy into thermal energy. This drawback was overcome by usingnanofluids in heat pipes. The solar collector using nanofluids had much betterthermal performance than that using water only. Nanofluids exhibited a betterthermal conductivity and convection coefficient in comparison to the pure fluid.


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This paper reviewed widely about the recent advances related with the application ofthe nanofluids in heat pipe solar collector. The synthesis and characterization ofnanoparticles and the performance of various nanofluids in heat pipe solar collectoris also highlighted.

Keywords: Heat pipe, solar collector, nanofluids, synthesis and characterization,renewable energy

OP – 17

Cu doped ZnO nanoparticles: synthesis, structural and opticalproperties

S. Thambidurai* and P. GowthamanThin Film Center, Erode Arts and Science College, Erode-9.*Corresponding Email: [email protected]

Bare ZnO and Cu - doped ZnO nanopowders were synthesized by co- precipitationmethod and annealed at 400°C for 2 hrs. The as-synthesized powders werecharacterized by X-ray diffraction (XRD), scanning electron microscope (SEM) andUV-Vis spectroscopy. The XRD results represented as-synthesized Cu-doped ZnOnanopowders in hexagonal wurtzite structure without any secondary phase aftercopper doping and SEM images demonstrated the shape and size of as-preparedsamples. Optical absorption analysis of the samples showed a red shift in absorptionband edge with copper doping in ZnO. Photoluminescence spectra of the samplesshows prominent peaks corresponding to near band edge UV emission and defectrelated green emission in the visible region at room temperature Fourier TransformInfrared spectra have shown a broad absorption band at ∼490 cm−1 for all thesamples, which corresponds to the stretching vibration of Zn–O bond. All resultsindicated significant influence of Cu doping on relevant structural properties of ZnO.

Keywords: ZnO Nanoparticel, Cu Concentration, Structural and Optical properties


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OP – 18

Synthesis of hydroxyapatite using eggshell by hydrothermal methodfor biomedical applications

G. Vidhya and E.K. Girija*

Department of Physics, Periyar University, Salem 636011, Tamil Nadu, India.*Corresponding Email: [email protected]

Hydroxyapatite (HA) is one of the most widely used biomaterial withosteoconductive properties. Chemical similarity to the mineral components of bonemake it useful as filler to replace damaged bone or as a coating on implants topromote bone in growth in prosthetic implants when used in orthopedic and dentalapplications. The conversion of waste obtained from natural biomineral intobiocompatible materials (biomaterials) is a strategy that will add more value for thebiomaterial. The present study is focused on the synthesis of HA by hydrothermalmethod using eggshell biowaste as calcium source. The samples were heat treated atthree different temperatures 700 ºC, 900 ºC, 1100 ºC for 3 hours. The product wascharacterized by x-ray diffraction (XRD), Fourier transform infrared (FTIR),scanning electron microscopy (SEM), transmission electron microscopy (TEM) andenergy dispersive X-ray analysis (EDAX). The sample revealed excellent bioactivityand also biocompatibility with fibroblast like L929 cell lines.

Keywords: Hydroxyapatite, eggshell, biowaste, hydrothermal method.

OP – 19

Gas sensing properties of zinc oxide doped cadmium sulfidenanocomposites under optimized annealing effect prepared bychemical method

L. Arunrajaa*, P. Thirumoorthyb and L. Edwinpaulc

aDepartment of Electronics & Communication, K.S.Rangasamy College of Arts &Science (Autonomous), Tiruchengode-637 215, Tamilnadu, India.bDepartment of Electronics and Communication, Government Arts College,Dharmapuri- 636 705, Tamilnadu, India.


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cCentral Leather Research Institute (CLRI), Adyar, Chennai-600 020, Tamil Nadu,India.*Corresponding Email: [email protected]

Zinc oxide doped Cadmium sulfide (ZnO/CdS) nanocomposites had beensynthesized the usage of easy chemical precipitation method at room temperature.ZnO/CdS and ZnO/CdS-473K samples were characterized the usage of diversespectral techniques. The XRD pattern well-known shows each in hexagonal andcubic structure of ZnO/CdS and ZnO/CdS-473K nanocomposites. The values of bandgap energy for ZnO/CdS and ZnO/CdS-473K had been obtained respectively, 3.2and 3.1eV. The surface morphology became investigated using transmission electronmicroscope (TEM). Oxygen gas became properly changed to verity the sensorresponse over a concentration range of 50 – 250 ppm at room temperature.The located results reveal that the performance, response and recovery time ofZnO/CdS nanocomposites annealed at 473K is located be extended.

Keywords: Nanocomposite, precipitation, sensor, TEM.

OP – 20

Zinc oxide nanoparticles: biosynthesis, characterization andinvestigation of its antibacterial activity on gram-positive and gram-negative bacteria prepared by chemical method

M. Ranjitha and A.P. Sudha*Department of Physics, Vellalar College for women (Autonomous), Erode - 638 012,Tamilnadu, India*Corresponding Email: [email protected]

In the present study, we reports a novel green route for synthesis of zinc oxide (ZnO)nanoparticles from zinc acetate using saccharum officinarum leaf extract (sugarcaneleaf) as a reducing agent without using any surfactant. The biosynthesized ZnOnanoparticles were analyzed using standard characterization tools.XRD patternreveals the formation of pure hexagonal phase structures of ZnO nanoparticles withthe average crystallite structure of 20.05nm.The functional groups presented in ZnOnanoparticles were confirmed by FTIR spectrum. (4000 - 400 cm-1). The surfacemorphologies of synthesized ZnO nanoparticles investigated using Scanning


62

Electron Microscope (SEM) propose that nearly all the ZnO nanoparticles arehexagonal. EDX analysis confirms the presence of zinc and oxygen. Thebiosynthesized ZnO nanoparticles show significant antibacterial activity against bothgram positive and gram negative bacteria when employing the agar diffusionmethod.

Keywords: Biosynthesis, Saccharum Officinarum, ZnO nanoparticles, antibacterialactivity

OP – 21

Evaluation of anticorrosive behaviour of ZnO nanotetra-podson AZ91-grade Mg alloy

R. Brindha1, M. Nandhini1, M. Selvam1 and K. Sakthipandi2

1Department of Nanoscience and Technology, K.S.Rangasamy College ofTechnology, Tiruchengode 637215, Tamil Nadu, India2Department of Physics, Sethu Institute of Technology, Kariapatti 626 115, TamilNadu, India*Corresponding Email: [email protected]

Highly cross linked zinc oxide (ZnO) with the nanorods morphology of tetra-podswas successfully was prepared using the microwave irradiation technique. Incomparison with the available conventional techniques, the microwave irradiationtechnique has the advantage of producing different morphological structures withhigh purity and in a shorter reaction time. The tetra-pods consist of a ZnO core in thezinc blende from which four ZnO arms emerge in the wurtzite structure. The effectsof time affecting dimension of ZnO nanotetra-pods were determined in thisinvestigation. Structural, morphological and optical properties of ZnO nanorods wereinvestigated by field emission scanning electron microscopy, X-ray diffraction, anultra violet visible spectrometer and energy-dispersive spectroscopy. Theelectrochemical corrosion behaviours of an AZ91-grade Mg alloy and a ZnOnanotetra-pods-coated Mg alloy were investigated. The tafel plot revealed that thecorrosion of Mg drastically decreased on coating with a thin layer of ZnO nanotetra-pods (Mg/ZnO) compared to Mg in a KOH electrolyte.

Graphical Abstract:


63

References[1] M.K Ram, E. K. Stefanakos and D. Yogi goswami, Mater. Sci. Semicond.

Process. 16 (6) (2013) 2070-2083

[2] Frank Witte, Norbert Hort, Carla Vogt, Smadar Cohen, Karl Ulrich Kainer,Regine Willumeit, Frank Feyerabend, Curr. Opin. Solid State Mater. Sci. 12(5-6) (2008) 63-72.

OP – 22

Synthesis, characterization of cobalt oxide nanoparticles bymicrowave combustion method and their antibacterial properties

A. Nallathambia*, A. Prakasama* and R. Azhagu Rajb

a*Department of physics, Thiruvalluvar Government Arts College, Rasipuram- 637401, Tamilnadu, IndiabDepartment of zoology, St.Xavier's College (Autonomous), Palayamkottai, 627 002Tamilnadu, India*Corresponding Email: [email protected]

Cobalt-oxide nanoparticle were synthesized using facile hydrothermal method. Thenanoparticles (NPs) were characterized by X-ray Diffraction and Scanning ElectronMicroscopy (SEM). The diffuse reflectance spectroscopy (DRS), photoluminescence(PL) spectroscopy analysis and vibrating sample magnetometer (VSM). Furthermore,the microwave combustion leads to the formation of fine particles with uniformmorphology. The magnetic properties of the synthesized cobalt oxide nano-microstructures were investigated by vibrating sample magnetometer (VSM) andtheir hysteresis loops were obtained at room temperature. Controlled growth andcareful characterization of cobalt oxide nanoparticle for antibacterial applications arechallenging.


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Keywords: Microwave synthesis, Nanoparticle, Electron microscopy, Opticalproperties

OP – 23

Role of surfactant (CTAB) on structural, morphological, optical andantibacterial properties of SnO2nanoparticles

K. Sujatha1, T. Seethalakshmi2*, A.P. Sudha1and O.L Shanmugasundaram3

1PG Department of Physics, Vellalar College for Women, Thindal, Tamilnadu, India2PG Department of Physics, Government Arts College, Karur, Tamilnadu, India.3Department of Textile Technology, K.S. Rangasamy College of Technology,Tiruchengode, Tamil Nadu, India*Corresponding Email: [email protected]

In the present work, tin oxide (SnO2) nanoparticles were synthesized using surfactant(CTAB) by co-precipitation method. The synthesized powders were characterized bydifferent techniques to study their structural, surface morphological, optical and anti-bacterial activity. X-ray diffraction data revealed the information of hexagonal rutilestructure for pure and surfactant aided SnO2 nanoparticles. The results show goodagreement with JCPDS data [41-1445]. The crystallite size of SnO2 nanoparticleswas found to decrease with addition of surfactant. Scanning electron microscopyimages exhibits spherical shape morphology with an average diameter of 30-75nmfor pure and surfactant aided SnO2 nanoparticles. The band gap energy of theprepared powders was estimated from the UV-Visible absorption spectra and aconsiderable increase in band gap energy was observed for surfactant aided SnO2

nanoparticles (3.487, and 3.57 eV). The antibacterial activities of the synthesizednanoparticles were studied against E.coli and S.aureus bacteria.

Keywords: SnO2 nanoparticles; surfactants; X-ray diffraction; morphology; opticalproperties; antibacterial properties.


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OP – 24

Studies on thermal nonlinear optical effects of organic crystal 2-(2-chloro-benzylidene)-cyclododecanone

D. Bharath*, D. Anbuselvi& and S. Kalainathan#

*Department of Physics, MVJ College of Engineering, Bangalore, Karnataka, India#Centre for Crystal Growth, VIT University, Vellore, Tamil Nadu, India&Department of Physics, Loyola College, Chennai, IndiaCorresponding Email: [email protected]

A cyclic ketone, 2-(2-Chloro-benzylidene)-cyclododecanone (2clCDD) organic compoundhas synthesized with derivatives by direct aldol condensation reaction. 2clCDD crystal hasbeen grown in the mixture of solvent (Tetrahydrofuran and ethanol) in natural evaporationmethod. The optical transparency of 2clCDD crystal was studied using UV-Vis-NIRspectroscopy and the reflectance, optical band gap(3.16ev), Extinction coefficient(10-3),optical conductivity (1012) were calculated. The refractive index of 2clCDD crystal wasmeasured using Abbe’s Refractometer and it is found to be 1.642. It is observed that lowercutoff at 371nm onwards and 90% of transparency on entire Vis-IR region. Nonlinearabsorption and refractive index of 2clCDD crystal has been investigated using Z-scantechnique. The magnitude of nonlinear refractive index (n2), nonlinear absorption (β) andthird order nonlinear susceptibility (χ3) have found to be in the range of 0.79x10-10 cm 2/W,0.38x10-3 cm /W and 0.53x10-4 esu respectively. The saturation absorption and self-defocusing effect were observed in z-scan open and closed aperture methods respectively.The nonlinear optical effects were arises due to thermal induction mechanism of the incidenthigh intensity laser beam in optical material. The optical response time of 2clCDD crystal iscoming around 10-3 seconds. The two photon figure of merit W>1(52) and T<1(1.8) aresuitable for optical switching application.

Graphical Abstract:


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OP – 25

Larvacidal activity of medicinal plants (Leucas Aspera and PiperNigram) against aedes aegypti and culex mosquitoes

N. Gobeeswaran, V. V. Sathibabu Uddandrao and Ganapathy Saravanan*Department of Biochemistry, K.S.Rangasamy College of Arts and Science(Autonomous), Tiruchengode*Corresponding Email: [email protected]

Aedes aegypti is one of the mosquito species responsible to transmitted dengue feverand dengue hemorrhagic fever. The genus piper has been an important source ofsecondary metabolites in insecticidal activity. Piper nigram leaf identified inbiochemical and histopathological changes against to the larvae of Aedes aegypti inanti dengue activity Leucas aspera extracts tested against the larvae of mosquitospecies are Aedes aegypti, Anopheles stephensi and Culex quinquefasciatus. In thisreview we explained about Larvacidal activity of medicinal plants such as L. asperaand P. nigram against Aedes aegypti and Culex mosquitoes. The Toxicity of P.nigram was tested against fourth larval stage of Ades aegypti. The extract could beused for spraying in stagnant water bodies which are known to be the breedinggrounds for mosquitos acting as vector for a multitude of infectious diseases. Largebiomass of the weed L. aspera available in the wastelands of southern India can beused as a bio resource to commercially produce mosquito larvicides. In conclusionresearchers reported that Leucas aspera and Piper nigram plants are can be used tocontrol the mosquito borne diseases.

Keywords: Mosquitoes, Larvacidal activity, Natural products, Dengue


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OP – 26

Influence of synthesis methods on photocatalytic performance ofZnO and La doped ZnO nanoparticles

M. Sudha1, A. Balamurugan2,Y.A. Syed Khadar3 and P. Manoj Kumar4

1Department of Physics, Government Arts College, Udhagamandalam – 643002,Tamilnadu, India2Department of Physics, Government Arts and Science College, Avinashi – 641 654,Tamilnadu, India3Department of Physics, K.S.R College of Arts and Science for Women,Tiruchengode – 637 215, Tamilnadu, India4Department of Nanoscience and Technology, K. S. Rangasamy College ofTechnology, Tiruchengode – 637 215, Tamil Nadu, India*Corresponding Email: [email protected]

The present study is aimed to evaluate the influence of processing parameters (i.e.,synthesis methods, calcination temperatures and doping concentrations) onphotocatalytic activity over the ZnO and La doped ZnO nanoparticles. The pure ZnOand La doped ZnO nanoparticles were prepared by using three different synthesismethods namely, sol gel, sonochemical and hydrothermal and followed bycalcination at 500°. The prepared nanoparticles were comprehensively investigatedthrough X-ray diffraction (XRD), Ultra-violet spectroscopy (UV-Vis), Fouriertransform infrared spectroscopy (FTIR), Field emission scanning electronmicroscopy (FESEM), Energy-dispersive X-ray spectroscopy (EDAX), Particle sizeanalysis (PSA) to get a broader understanding about the influence of processingparameter over the ZnO and La doped ZnO nanoparticles, structural, optical physico-chemical, and photocatalytic property, a comparative evaluation was performed. TheDegradation performance on methylene blue (MB) and Methylene orange (MO) dyeunder UV light irradiation was done by using UV-Vis spectroscopy to explore thephotocatalytic performance of the prepared nanoparticles. The obtained result givesenhanced photocatalytic activity

Keywords: La doped ZnO nanoparticles, Synthesis methods, Photocatalytic activity


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OP – 27

Mechanical properties of aluminium alloy 2024 reinforced with limestone and graphite hybrid metal matrix composites

M. Muniyappan, N. Iyandurai*and P. DuraisamyDepartment of Physics, Thiruvalluvar Govt. Arts College, Rasipuram – 637 401.Namakkal, India.*Corresponding Email: [email protected]

Materials are frequently chosen for structural applications because they havedesirable combinations of mechanical characteristics. Development of hybrid metalmatrix composites has become an important area of research interest in MaterialsScience. In view of this, the present study focuses on the formation of aluminium-lime stone-graphite hybrid metal matrix composites. The present study was aimed atevaluating the mechanical properties of Aluminium 2024 in the presence of limestone, graphite and its combinations. Consequently aluminium metal matrixcomposite combines the strength of the reinforcement with the toughness of thematrix to achieve a combination of desirable properties not available in any singleconventional material. The compositions were added up to the ultimate level and stircasting method was used for the fabrication of aluminium metal matrix composites.Structural characterization was carried out on metal matrix composites by x-raydiffraction studies and optical microscopy was used for the micro structural studies.The mechanical behaviors of metal matrix composites like density, tensile strength,yield strength, elongation and hardness tests were ascertained by performingcarefully designed laboratory experiments that replicate as nearly as possible theservice conditions. In the presence of lime stone and graphite [lime stone (5%) +graphite (10%) and graphite (10%) + lime stone (10%)] with aluminium, it was fairlyobserved that the density of the composites was decreased and the hardness wasincreased. Correspondingly, the increase in tensile strength was also observed butelongation of the hybrid metal matrix composites in comparison with unreinforcedaluminium was decreased. The aluminium- lime stone - graphite hybrid metal matrixcomposites significantly differed in all of the properties measured. Aluminium in thepresence of lime stone (10%)- graphite (10%) was the hardest instead of aluminium-lime stone and aluminium- graphite composites.


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Keywords: Aluminium 2024, Lime Stone, Graphite, Mechanical behaviour.

OP – 28

Morphology and size controlled synthesis of zinc oxidenanostructures and their optical properties

J. Duraimurugan1 and P. Maadeswaran2

1Department of Physics, Laxminarayana Arts and Science College for Women,Dharmapuri.2Department of Energy Studies, Periyar University, Salem*Corresponding Email: [email protected]

We report the facile synthesis of zinc oxide (ZnO) nanostructures with different sizesand morphologies by a rapid microwave assisted synthesis using ethylenediaminetetraacetic acid (EDTA) and/or trisodium citrate as chelating agents and theircharacterization. The obtained ZnO nanostructures having hexagonal Wurtzitestructure with different morphologies. With the aid of EDTA and/or trisodiumcitrate, flowers, flakes, solid spheres and porous spheres were obtained bycontrolling the crystal growth habit and the concentration of ZnO growth units undermicrowave irradiation. The optical behaviour was analysed using UV–Visspectroscopic technique which indicates that the prepared ZnO nanostructures exhibitband gap between 3.27 and 3.37 V due to potential fluctuations in electronic bandstructure of ZnO owing to surface-related defects and/or adsorbed species.

Graphical Abstract:


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OP – 29

Growth, optical and thermal characterization of nonlinear opticalmaterial of valine oxalate cadmium chloride

S. Akilandeswari and L. JothiDepartment of Physics, Namakkal Kavignar Ramalingam Goverment Arts Collegefor Women, Namakkal – 637 001, India.*Corresponding Email: [email protected]

Metal ions of cadmium chloride doped valine and oxalic acid have been synthesizedand grown from solution growth method by employing slow evaporation of thesolvent at room temperature. The grown crystal was subjected to variouscharacterization techniques, such as single crystal X-ray diffraction, FourierTransform Infrared and FT-Raman spectral analyses, optical absorbance andtransmission, fluorescence study, second harmonic generation measurement. Microhardness studies and thermal stability were also measured. The cell parameters weredetermined using single crystal X-ray diffraction method. The shifting in frequencyassignment of different functional group of valine and cadmium chloride due toaddition of oxalic acid were analysed by FTIR spectral analysis. The functionalgroups of the compound were also obtained from FT-Raman spectrum. The opticalabsorption and transmission of light radiation of the grown material are identifiedfrom UV-NIR studies. Fluorescence study was carried out for the grown material.The second harmonic generation of the grown material was confirmed by Kurtzpowder technique. The mechanical properties of the grown material were studiedusing Vickers micro hardness measurement. The study reveals that the grownmaterial belongs to soft category. Thermal properties were investigated by thermogravimetric analysis, differential thermal analysis and differential scanningcalorimetric analysis. Melting point and thermal stability are confirmed from thethermal studies.


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OP – 30

Quantum chemical calculations on pyrazol derivatives

P. Periyannan1, P. Srinivasan2, A. David Stephen3 and K. Ravichandran1*

1Department of Physics, Kandaswami Kandar’s College, Velur, Namakkal (Dt),India2PG&Research Department of Physics, Chikkaiah Naicker College, Erode, India3Department of Physics, Sri Shakthi Institute of Engineering and Technology,Coimbatore-641062, IndiaCorresponding Email: [email protected]

A charge density analysis has been performed in gas phase 1,5-dimethyl-2-phenyl-4-{[(E)-thiophen-2-ylmethylidene] amino}-1,2-dihydro -3H pyrazol-3-one(DPP) and4-{[(E)-(2-Hydroxynaphthalen-1-yl)methylidene]amino}-1,5-dimethyl-2-phenyl-1,2-dihydro-3H-pyrazol-3-one (HMP) biologically important molecules. Further, theoptimized molecular structures have been investigated by B3LYP/6311G** andHF/6311G** methods, are shows good agreement with experimental X-ray data. The

DFT method predicts that the electron density (r) of the molecule (I) and (II) the N-N bond

is ~2.16 eÅ-5 and the corresponding Laplacian [ ∇2(r)] value is -12.4 eÅ-5. Also thecalculated HOMO and LUMO energies show that charge transfer occurs in themolecules. Notably information about charge density distribution and site ofchemical reactivity of the molecules has been obtained by electron density andelectrostatic potential (ESP).

Keywords: DFT, HF, AIM, AIM analysis, electron density, HOMO-LUMO, ESP.


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OP – 31

Molecular docking and DFT study of cute cure N-[3-[[5-bromo-4-[2-(1H-imidazol-5-yl) ethyl amino] pyrimidin-2-yl] amino] phenyl]pyrrolidine-1-carboxamide as 3-phosphoinositide-dependent kinase1 inhibitor

Latha Nataraja and Barathi Diravidamani*

Department of Physics, N.K.R. Govt. Arts College for Women, Namakkal, TamilNadu 637 001, India*Corresponding Email: [email protected]

The invention plays to pyrimidine derivatives as inhibitor of kinases and the use asmedications for treating breast cancer. Experimental FT-IR and FT-Raman spectra ofN-[3-[[5-bromo-4-[2-(1H-imidazol-5-yl)ethylamino] pyrimidin-2-yl] amino]phenyl]pyrrolidine-1-carboxamide were compared with theoretical spectral datausing Gaussian 09W program with B3LYP method using 6-31G (d) basis setcalculations. The molecular structures were fully optimized with atomic numberingscheme adopted in the study. Dipole moment, polarizability, first statichyperpolarizability and thermodynamic properties have been calculated to get abetter insight of the properties of title molecule. EHOMO, ELUMO, energy gap andelectrophilicity index were calculated to explore the reactivity, stability and bio-activity of the title compound. The molecular electrostatic potential map wasgenerated in order to spot the electrophilic and nucleophilic sites in the titlecompound. Due to less side effects and good profile, the title compound can be usedto treat various pathologies which have been confirmed through molecular dockingstudies.


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OP – 32

Effect of next nearest neighbor in classical Heisenberg model withadded biquadratic exchange and DM interactions

S Suganyaa, A Prabhub and B Srividyac*

aDepartment of Physics, Government College of Engineering, Dharmapuri, TN,India - 636 704bDepartment of Physics, Mahendra College of Engineering, Minnampalli, TN, India- 636 106cDepartment of Physics, K.S.R. College of Engineering, Tiruchengode, TN, India -637 215*Corresponding Email: [email protected]

We carry out the intriguing investigation of next-nearest neighbor (NNN) interactionin Heisenberg model along with the biquadratic, Dzyaloshinskii – Moriya (DM) andanisotropic exchange interactions. To study the underlying dynamics, we employedquasi discrete multiple-scale approximation [1] which leads to the nonlinearevolution equation. Doing the further analysis by solving the equation aided withsymbolic computation, new insight as how the magnetic properties get modified onthe inclusion of NNN, biquadratic and DM interactions is provided. The solitonobtained by the delicate presence of the above said interactions also have significantimpact on certain frustrated ferromagnetic spin system and can be exploited forpotential applications.

References[1] Guoxiang Huang, Phys. Rev. B 51, 12 347 (1995).

OP – 33

Analysis of antibacterial activity and cytotoxicicity of silver oxidedoped hydroxyapatite exposed to DC glow discharge plasma

P. Sri Devi*1 and K.A.Vijayalakshmi2

*Research and Development Centre, Bharathiar University, Coimbatore, Tamilnadu,India1PG Department of Physics, Vellalar College for Women, Erode - 12


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2Department of Physics, Sri Vasavi College, Erode, Tamilnadu, India*Corresponding Email: [email protected]

The present work investigated the possibility of enhancing hydroxyapatite (HAp)bioactivity by substituting silver oxide. Ag2O-HAp nanoparticles were synthesizedby using the wet precipitation process with exposure to DC glow discharge nonthermal plasma. The phase purity, elemental composition and morphology wereanalyzed by X-ray diffraction (XRD), Fourier transform infrared spectroscopy(FTIR), scanning electron microscopy (SEM), and energy dispersive X-rayspectroscopy (EDX). MTT assay for Silver oxide doped hydroxyapatite (Ag2O HAP)nanopowders (NPs) have been carried out for MCF -7 breast cancer cell line and thecyototoxicity effect were analysed. The biocompatibility of the synthesized silveroxide doped HAp proves it as promising candidate for upcoming biomedicalapplications.

Keywords: XRD, SEM, MTT assay, FTIR, Biocompatibility

OP – 34

Effect of lanthanide doping structural, morphological and opticalproperties of zirconium dioxide nanoparticles

M.Anantha and A.Amuthavallib

aDepartment of Physics, Laxminarayana Arts and Science College for Women,Dharmapuri 636 705, Tamil Nadu, IndiabDepartment of Physics, PSA College of Arts and Science Dharmapuri, Tamil Nadu,India

Zirconium dioxide nanoparticles with monoclinic blended structure weresuccessfully synthesized by thermal treatment method using zirconium (IV) acetatehydroxide as the metal precursor, polyvinylpyrrolidone as the capping agent, anddeionized water as a solvent. The chemicals were mixed and stirred to form ahomogeneous solution and hereafter directly underwent calcination to attain the purenanocrystalline powder, which was confirmed by FTIR, EDX, and XRD analyses.The control over the size and optical properties of nanoparticles was achievedthrough changing in calcination temperatures from 600 to 900°C. The obtainedaverage particle sizes from XRD spectra and TEM images showed that the particlesize increased with increasing calcination temperature. The optical properties which


75

were investigated using a UV-Vis spectrophotometer showed a decrease in the bandgap energy with increasing calcination temperature due to the enlargement of theparticle size. These results prove that, by eliminating drying process (24 h) in thepresent thermal treatment method, size-controlled zirconia nanoparticles wereconveniently manufactured with a reduction of synthesize time and energyconsumption, suitable for large-scale fabrication.

OP – 35

ZnS hybrid quantum dots for multifunctional applications

V.P. Devarajan1* and P. Periasamy2

1Department of Physics, KSR College of Arts & Science for Women, Tiruchengode,Namakkal – 637 215, Tamilnadu, India.2Department of Physics, Gnanamani College of Engineering, Rasipuram, Namakkal– 637 018, Tamilnadu, India.*Corresponding Email: [email protected]

In the present work, the ZnS hybrid quantum dots were prepared by using a novelsimple chemical synthesis route. Then, the structural, morphology and opticalproperties of hybrid QDs were measured using various characterization techniquessuch as XRD, TEM, UV, PL analysis. The multifunctional application performanceswere investigated in detail using fluorescence stability, photodegradation analysisand anti-bacterial activity. Moreover, investigation on the bi-functional behavior ofphotoluminescence as well as magnetism from this hybrid QDs was interesting one.Hence, it is controllable, efficient and highly suitable for device fabrication,magnetic resonance imaging and cancer cell target applications.

Keywords: ZnS, Hybrids, Bi-functional behavior, Opto-electronic device and Bio-imaging.


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OP – 36

Structural, optical, antibacterial activity of ZnO nanoparticlesprepared by simple chemical method

P Joseph Samrat*1and P S V Subba Rao2

1Department of Physics, Brilliant Institute of Engineering & Technology,Hyderabad-501 505, Telagana, India.2Department of Physics, College of Science & Technology, Andhra University,Visakhapatnam-530 003, Andhra Pradesh, India.

In the present work, the zinc oxide (ZnO) nanoparticles were prepared by usingsimple chemical method. Then their structural, morphological, optical propertieswere characterized by using X-ray diffraction (XRD), scanning electron microscopy(SEM), ultraviolet visible spectroscopy (UV) and photoluminescence spectroscopy(PL) techniques. The hexagonal crystal nature was observed from XRD patterns andtheir calculated crystallite sizes were approximately ±20 nm. The spherical shapedparticles nature was observed from SEM images. The optical absorption behaviorwas observed from UV spectrum which was blue-shifted behavior and theircalculated bandgap energy value was approximately 3.9 eV. The emission behaviorwas observed from PL spectrum which was enhanced emission nature. Further, theantibacterial activity was measured.

Keywords: ZnO Nanoparticles, Optical properties and Antibacterial activity.

OP – 37

Highly efficient with improved green dopant materials based onquinacridone derivatives for OLEDs: A DFT analysis

S. Palanisamya, P. Srinivasanb, A. David Stephenc and K. Selvarajua*aDepartment of Physics, Kandaswami Kandar’s College, Velur-638182, Namakkal(Dt) IndiabDepartment of Physics, Chikkaiah Naicker College, Erode-638004, Erode (Dt),IndiacDepartment of Physics, Sri Shakthi Institute of Engineering and Technology,Coimbatore – 641 062, India


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* Corresponding author: [email protected]

The present computational work deals with the Quinacridone green dopanttheoretical OLED molecule has been carried out with DFT by using Gaussian09program. All the quantum chemical calculations have been performed with HF,B3LYP and B3PW91 functional methods. The structural parameters, bondtopological analysis and the corresponding electrostatic and transport properties ofthe OLED molecules are calculated. The laplacian of electron density and bondellipticity of molecule has been studied for various optimized methods. The atomiccharges of the molecule for different optimized methods has been analysed withAIM, MPA and NPA charges. The HLG of the molecule are calculated fromdifferent optimized basis sets. The HF method value is 8.49 eV. The B3LYP andB3PW91 methods energy values are 3.13 eV and 3.12 eV respectively. These valuesare most equal to the energy gap obtained from density of states (DOS) spectrum.Hence, the ESP shows that expend of O-atoms and the charge accumulated throughQuinacridone OLED molecule. The grateful Quinacridone green dopant derivativemolecules are high quantum efficiency, longer lifetime and very useful to industrialorganic pigment of these molecules.

Keywords: AIM, DFT, OLED, HLG, ESP

Graphical Abstract:

Figure shows the chemical structure of Quinacridone OLED molecule


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OP – 38

Theoretical and vibrational analysis of FT-IR, FT-Raman spectra,HOMO-LUMO analysis of halogenated amino benzene: A densityfunctional approach

S. Natarajana*, S. Prabakarana, V. Ramaa and S. Palanisamyb

aDepartment of Physics, Siri PSG Arts & Science College for Women, Sankari-637301, Salem (Dt), IndiabDepartment of Physics, Kandaswami Kandar’s College, Velur-638 182, Namakkal(Dt), India* Corresponding author: [email protected]

The effect of optimized molecular geometry, vibrational analysis of HalogenatedAmino Benzene compounds plays a vital role in the process of drugs. In the presentresearch work provides geometrical parameters, vibrational assignments and non-linear optical property also calculated. Moreover, the present study aims to illustratehow to intramolecular interactions appear within the molecule on account of HOMO-LUMO studies. In addition to these, Mullikan’s Atomic charges associated with eachatom of the stable conformer are also analysed. The entire vibrational, geometricalparameters, (MPA and NPA) Atomic charges and HOMO-LUMO Energy gap alsocalculated with the aid of B3LYP level of theory with 6-311++G(d,p) basis set on aquantum chemical calculation by using Gaussian 09 program. The HOMO-LUMOstudies provided information about occupied and unoccupied molecular orbitals andintramolecular interactions of Halogenated Amino Benzene. Mullikan’s Atomiccharge on each atom of Halogenated Amino Benzene shows Charge-stabilityrelations are analysed. The entire brominated aminobenzene possesses morechemical reactive behavior than the others.

Keywords: DFT, HLG, MPA, NPA


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OP – 39

Analyzing the suitability of tungsten oxide (WO3) nanoparticlesthrough chromium doping for dopamine Bio Sensor applications

B. Gnanavela,* and V. Hariharanb

aPG & Research Department of Physics, Chikkaiah Naicker College, Erode,Tamilnadu, IndiabPG & Research Department of Physics, Mahendra Arts and Science College,Kalipatti, Namakkal District, Tamilnadu, India.* Corresponding author: [email protected]

The present work aims to synthesis Nanocrystalline WO3.H2O nanopowders, dopedwith chromium using Chromium chloride and Sodium tungstate at different ratios (2and 5 wt.%) in a facile microwave irradiation process, followed by the annealingprocess at 600°C in air for 6 h in order to improve the crystallanity and remove thebyproducts during synthesis process. The samples were characterized with powderX-ray diffraction; field emission scanning electron microscopy, UV-VIS diffusionreflectance spectroscopy, and photoluminescence spectroscopy along with, thecorresponding dopamine sensing behavior of the products were analyzed throughcyclic voltammetric technique. X-ray diffraction patterns showed both undoped anddoped WO3.H2O crystallized with orthorhombic phase. The annealing effect showedthat doped WO3 (Cr ≈ 2 wt.%) formed with orthorhombic phase and the remainingproducts were found to be monoclinic phase (pure and Cr ≈ 5 wt.%) indicating therole of dopant in determining the crystalline phase of the end products. The effect ofdoping on crystalline perfection of the samples was also monitored using power X-ray analysis. FE-SEM micrographs suggested that the dopants are able to influencethe growth rate and morphology of the prepared nanopowders. UV-VIS-DRSspectroscopy was employed to determine the optical band gap of these samples andthe results revealed the incorporation of dopant (Cr ion) in the intermediate energylevel in determining the optical band gap. Blue emissions were verified using PL atroom temperature for the annealed samples when exited with 390 nm wavelength.The room temperature PL spectra reveal the distortions in WO4

2- tetrahedronstructure due to microwave irradiation on the samples. The CV studies suggest thatthe doped samples revealed the suitability of the samples for dopamine bio sensorapplications. In addition with the above the coexistence of dia and ferromagnetism


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also observed in doped samples suggests the role of dopant in fixing the magneticbehaviour of the samples and that can be extended to super conducting applications.

Keywords: Tungsten oxide, Microwave irradiation, Nanoparticles

OP – 40

High-performance mc-Si ingot grown by modified DS system:numerical investigation

M. Thiyagaragjan, G. Aravindan, M. Srinivasan * and P. RamasamySSN College of Engineering, Kalavakkam, Chennai, India - 603 110.* Corresponding author: [email protected]

Numerical investigation is carried out on multi-crystalline silicon ingot grown byusing side-top and side-bottom heaters and the temperature distribution, von Misesstress and maximum shear stress are analyzed. In order to analyze the changes,results from the side-top and side-bottom heaters are compared. The stress values arereduced, when the side-bottom heaters are placed. A 2D numerical approach issuccessfully applied to study the stress parameters in directional solidificationsilicon. The CGSim (Crystal Growth software) software of STR based on the FiniteVolume Method (FVM) was used for the computations. In this numerical model, thefurnace was assumed to be 2-D axisymmetric based on the real structure of the DSsystem, and divided into a number of sub-regions for simulation. The temperature atthe crystallization interface was set to 1685 K. The crystal was assumed as isotropicand the Von Mises stress was used to reflect the thermal stress. Numerical simulationbecomes a powerful tool for improving ingot quality Numerical investigation on themulti-crystalline silicon growth process was carried out using the finite volumemethod for both conventional and modified DS system. The temperature distributionand different type of thermal stresses were simulated and analyzed. Modified DSsystem of mc-silicon ingot has less convex isothermal lines. Side-bottom heaterplaced DS process mc-Si ingot has lower von Mises and shear stress. It may be usedfor production of high quality industrial multi crystalline silicon ingots.


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OP – 41

Growth and characterization of piperine (PPN) single crystal grownby slow evaporation solution growth technique

A. Muthuraja1 and D. Bharath1

1Department of Physics, Theivanai Ammal College for Women (Autonomous),Villupuram, Tamilnadu, India* Corresponding author: [email protected]

An organic single crystal Piperine (PPN) was grown by slow evaporation solutiongrowth technique (SEST). Single crystal X-ray diffaction measurements were carriedout on grown piperine single crystals. The crystal system was identifid and latticeparameters were measured from the powder X-ray diffaction (PXRD) measurement.The transmittance of the grown crystal and cut of wavelength were analysed usingUV–vis NIR studies and the cut-of wavelength was found to be 387 nm. Vickersmicro hardness analysis was carried out to identify the mechanical stability of thegrown crystal. Chemical etching study was carried out using diffrent etchants and theetch pit density (EPD) was calculated. The third order nonlinear optical property ofPPN crystal was studied using Z-scan technique with He–Ne laser (632·8 nm).

Keywords: Organic crystal; mechanical properties; Z-scan;

OP – 42

Dielectric, mechanical and optical studies on 4, 4’-dimethoxybenzoinsingle crystal by vertical bridgman technique

A. Muthurajaa* and S. Kalainathanb

a*Department of Physics, Theivanai Ammal college for Women (autonomous),Villupuram, Tamilandu. IndiabCentre for Crystal Growth, School of Advanced Sciences, VIT University,Vellore-632 014, Tamilnadu, India* Corresponding author: [email protected]

Good quality single crystal of organic 4, 4’-Dimethoxybenzoin (4,4’-DMB) wassuccessfully grown by Vertical Bridgman technique. The grown crystal single phase


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was confirmed by powder X-ray diffraction analysis. The UV-Vis-NIR studies showthat the grown 4, 4’ –DMB crystals cut off wavelength is around 346 nm. The opticalband gap (Eg), extinction coefficient (K), and reflectance (R), were also calculated.Impedance measurement were carried out. The third-order nonlinear optical propertyof 4, 4’-DMB was carried out using a Z-scan technique with He-Ne laser at 632.8nm. The laser damage threshold value of 4, 4’-DMB is found to be 3.90 GW/cm2.

Keywords: Crystal growth; Dielectric, Vickers microhardness; Laser damagethreshold.

OP – 43

Nonlinear excitations in biological systems using nonlinear equations

S. Srimathia and A. Muniyappana*

aDepartment of Physics, Theivanai Ammal College for Women (Autonomous),Villiupuram-605 401, Tamilnadu, India* Corresponding author: [email protected]

The important processes in living organisms are associated with the propagation ofnonlinear energy. This energy in the form of solitons, it is a self-reinforcing solitarywaves, interact with complex biological phenomena such as cellular self-organization. We bring into play He’s semi-inverse method to find the solitary wavesolutions of the nonlinear evolution equation. In this paper, we explore theexcitations of nonlinear wave along the surface of biological systems for thenonlinear equation with the help of Semi-inverse method.

Keywords: Solitons, biological systems, nonlinear equation, semi-inverse method


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ContributoryPoster Abstracts


84

PP – 01Electrochemical studies of layered double hydroxides for energystorage devices

M. Mynadevi, T. Santhiyadevi and A. Subhashri*Department of Chemistry, K.S.Rangasamy College of Arts & Science(Autonomous), Tiruchengode – 637 215* Corresponding Email: [email protected]

Energy storage is as important as energy production and power generation. Storageof energy is portentous to be highly efficient and cost effective. Effectively energycan be stored by means of LDHs that can be synthesized using transition metalscontaining good electrical properties. Energy storage becomes more efficient whenthe particles form in nano-size. It can be attached to carbon nanotubes and can beincorporated as cathode in batteries. LDHs are a family of natural and syntheticcompounds having general for [M(1-x)

2+Mx3+(OH)2] with divalent and trivalent metal

cations occupying the octahedral interstices of the layers. Organic or inorganicanions are embedded in the interlayers of the lamellar edifices. Metals Mg, Zn, Ni,Al, Ga, Fe, Mn, Ca, In, V, Cr, Co and Cu are commonly used. The interlayer anion inLDHs is carbonate, as it has particularly high affinity for LDH formation. Otheranions which have been reported to be used in LDHs include halides, oxoanions,oxometalates, polyoxometalates, and organic anions. The relatively mild reactionconditions for LDHs enables many organic and biological molecules to remain intactthroughout the synthesis. As the properties of the LDH are altered based on the metalcations and interlayer anion, the applications of LDHs include catalysts, biomaterials,polymer additives, environmental materials, thin film applications, fire retardantadditives, anti-corrosion coatings, and controlled drug release. The electrochemicalproperties of LDHs has created interest in its use as electrode modifiers/materials andsensors.


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PP – 02

Synthesis and characterization of CdS quantum dots (QDs) usingfruit extract as an organic capping agent

K. Kandasamy1, M. Venkatesh2*, S.P. Rajasingh3 and P. Manoj Kumar4

1Department of Chemistry, K. S. R. College of Arts and Science for Women,Tiruchengode – 637 215, Tamilnadu, India.2Department of Physics, K.S. Rangasamy College of Arts and Science (Autonomous),Tiruchengode – 637 215, Tamilnadu, India.3Department of Chemistry, Chikkanna Government Arts College, Tiruppur – 641002,Tamilnadu, India.4Department of Nanoscience and Technology, K.S. Rangasamy College ofTechnology, Tiruchengode – 637 215* Corresponding Email: [email protected]

An organic capping and stabilizing agent is a main role of size and shape controllerin Nano synthetic methodology. Most of the articles reported fruit pulp contains94.4% Water, 29% Glucose, 24% Fructose, 199 m/100g of Potassium, huge numberof phenolic, flavonoid, alkaloid compounds which can act as organic capping andstabilizing agents. Low dimensional semiconductor quantum dots (<5 nm) havereceived great attention for potential use in biomedical and device applications.Therefore, CdS Quantum Dot (QDs) synthesized for one step process through thegreen synthesis that used juice of fruit pulp act as a capping and stability agent.Synthesized CdS QDs were characterized using UV-visible spectrophotometer,Fourier transform infrared spectroscopy, Raman spectroscopy, X-ray diffraction,High-resolution microscopy with selected area electron diffraction pattern, EnergyDispersive X-Ray Analysis. From UV-Visible DRS report, we found the very lowband gap energy. FT-IR indicated organic functional groups and CdS metal atoms.Raman scattering offers high specificity in molecular identification. XRD studies(JCPDS Card No. 10-0454) showed the formation of (111), (220) and (311) planes ofcubic nature. HR-TEM followed by SAED analysis indicated the formation ofspherical, crystalline, CdS of diameter ranging from 3-5 nm. EDAX analysisconfirmed the presence of Cd and S in nanospher.

Keywords: CdS, quantum dots, Organic capping agent, Green synthesis.


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Graphical Abstract

PP – 03Formation of multiple focal spots using phase modulated radiallypolarized doughnut gaussian beam

G.Sharmila1, A.Shema1, P.Sangeetha1 and K.Prabakaran1*

Department of Physics, Mahendra Arts and Science College (Autonomous),Namakkal, Tamilnadu, India* Corresponding Email: [email protected]

The generation of multiple focal spot segments using phase modulated RadiallyPolarized doughnut Gaussian beam with binary phase plate is investigatedtheoretically by vector diffraction theory. In our knowledge, multiple optical trappingwas realized with the requirement of more than one tweezers beam and the particlescannot be stably trapped inside the optical stack. The present work at a novel designfor producing a longitudinal optical chain near the focus that can be trap each particlein three dimensions at different planes by modulating the phase of a single radiallypolarized incident beam. Each individual particle can be accurately confined threedimensionally. The possible design of binary phase filter to achieve multiple focalspot segments which finds wide applications in multiple optical trapping,micromanipulation and optical manipulation of high refractive index particles.

PP – 04

Crystal growth, optical, structural, spectral and electrical propertiesof magnesium zinc thiocyanate [MZTC] single crystal

R. Arivuselvi1*, P. Ramesh Babu2 and V. Vasanthakumar1

1PG & Research Department of Physics, Sri Vidya Mandir Arts & Science College,Katteri - 636 902, Uthangarai, Tamil Nadu, India.


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2 Sri Krishna Arts and Science College, Coimbatore – 641 008, Tamil Nadu, India*Corresponding Email: [email protected]

In the present investigation, magnesium zinc thiocyanate (MZTC) single crystalswere grown by slow evaporation technique. The crystal has been characterized byUV, PL, FTIR, PXRD, AC and DC conductivity. The cut off wavelength, UV-Visible transmittance and optical band gap of MZTC were determined by UV Visibleanalysis. The photoluminescence emissions of MZTC crystal were found to beorange and red emission at 602 nm and 667 nm respectively. The major functionalgroups of the compound were analyzed by FTIR analysis. The powder X- raydiffraction study on the MZTC single crystal shows a crystalline nature and possesmonoclinic crystal system. The electrical properties of the grown crystal areexplained with AC and DC conductivity measurement.

Keywords: Slow evaporation technique; UV-Visible; photoluminescence study; FTIRanalysis; AC and DC conductivity.

PP – 05

Tight focusing properties of phase modulated radially polarizeddoughnut gaussian beam

K.Geetha1, R.Ramyaraj1, V.Karthik1 and K.Prabakaran1*

1Department of Physics, Mahendra Arts and Science College (Autonomous),Namakkal, Tamilnadu, India.* Corresponding Email: [email protected]

In the present study, We investigate the focusing properties of a phase modulatedradially polarized doughnut Gaussian beam by a high numerical aperture (NA) lensbased on vector diffraction theory. We observe that our proposed system generates asub wavelength focal spot of 0.42λ having large uniform focal depth of 5 λ. Thiskind of non diffracting focal segments is called as dark channel, which may haveapplication in atom trapping, nanolithography, trapping and manipulating particles.


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PP – 06

Creation of multiple focal holes using phase modulated azimuthallypolarized doughnut gaussian beam

R. Ramyaraj1, S. Salaisuganthum1, P. Sangeetha1 and K. Prabakaran1*


In the present study, the generation of multiple focal hole segments using phasemodulated azimuthally polarized doughnut Gaussian beam with complex phase plateis investigated theoretically by vector diffraction theory. In our knowledge, thefocusing properties of the azimuthally polarized DGB with complex phase wavefront are not studied. The present paper is aimed at studying low refractive indexparticles trapping by using phase modulate azimuthally polarized doughnutgaussian beam. The possible design of complex phase filter to achieve multiple focalhole segments which finds wide applications in multiple optical trapping,micromanipulation, optical manipulation of low refractive index particles.

PP – 07

Focal shifting of radially polarized doughnut gaussian beam usingcosine phase plate

V. Karthi1, K. Prabakaran1*and P. Sangeetha1


Focal shift of radially polarized doughnut Gaussian beams induced by cosine phasemasks are investigated theoretically by vector diffraction theory. Results show thatwhen the radially polarized doughnut Gaussian beam with cosine phase plate isfocused, the focal pattern differs considerably with frequency parameter (C) in thecosine function term. Increasing the value of frequency parameter in the cosine partof the phase mask, focal shift may occur, simultaneously, the focal shift directionmay change. Moreover, by altering frequency parameter or phase variation parameter


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of the phase mask will change the energy distributions of maximum intensity peakand other small intensity peaks.

PP – 08

Development of superhydrophobic surface on aluminium forcorrosion protectionR. Mohan Raja

, Karthick rajaa and V. Rajb

aDepartment of Chemistry, J.K.K.Nataraja College of arts and science,Komarapalayam, Namakkal-83, Tamil Nadu IndiabDepartment of Chemistry, Periyar University, Salem, Tamil Nadu India -11Corresponding Email: [email protected]

In the view of extensive marine application of Aluminum (Al), a simple and facilemethod is developed to fabricate superhydrophobic hybrid polymeric coating appliedin corrosion protection by electrochemical polymerization of aniline followed byelectrodeposition of Zirconium stearate. The synthesized nano composite coatingswere characterized by UV-Visible and FTIR spectroscopic techniques. The surfacemorphology and surface composition were analysed by scanning electronmicroscopy and X-ray diffraction. The mechanical properties such as microhardnessand abrasion resistance were measured using Vicker microhardness tester and TaberAbrasion tester respectively. The wettability and hydrophobicity of the coating werealso tested. The corrosion resistance of the coatings was measured by Tafelpolarization and electrochemical impedance spectroscopy. From all the abovestudies, it was found that the Zinc stearate -polymer coating provided excellentcorrosion resistance to aluminium due to its superhydrophobic nature, and highermechanical properties.

Keywords: Electropolymerization, Copolymer, Superhydrophobic Aluminum,Corrosion and anodization

References[1] V. Raj, R. Mohan Raj, Materials Sci and Eng B xxx (2016) xxx–xxx..[2] P. Muthirulan, N. Rajendran, Surface & Coatings Technology 206 (2012)

2072–2078.


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PP – 09

Electrosynthesis of alumina/poly (2-AP) / ZrO ON AL plate forfluoride removal

R. Mohan Raj and K. SowmiyaDepartment of Chemistry, J.K.K.Nataraja College of arts and science,Komarapalayam, Namakkal-83, Tamil Nadu, India*Corresponding Email: [email protected]

Alumina-Poly (2-AP)-Zinc Oxide Nano composite coatings were formed onaluminium by electropolymerisation and electrodeposition techniques. Thesynthesized Nano composite coatings were characterized by FTIR spectroscopictechniques. The surface morphology were analyzed by scanning electron microscopyand X-ray diffraction. The mechanical properties such as micro hardness andabrasion resistance were measured using Vicker microhardness tester and TaberAbrasion tester respectively. This zirconium loaded copolymer coated Al plate wasused as a novel adsorbent for fluoride removal without any filtration. Thedefluoridation experiments were carried out for various influencing parameters likecontact time, pH and competitor anions for optimization. The corrosion resistance ofthe coatings was measured by Tafel polarization and electrochemical impedancespectroscopy. From all the above studies, it was found that the Alumina-Poly (2-AP)-Zinc Oxide coating provided excellent corrosion resistance to aluminium and alsothis plate used as adsorbent, which has been successfully applied to remove fluoridefrom groundwater.

Keywords: Electropolymerization, polymer, Aluminum, Corrosion, andElectrodeposition

References[1] S. Meenakshi, N. Viswanathan, J. Colloid Interface Sci. 308 (2007)

438–450.[2] V. Raj, R. Mohan Raj, Materials Sci and Eng B xxx (2016) xxx–xxx.


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PP – 10

Fabrication of DY2O3 coating on Ti implant for improved corrosionprotection

R. Mohan Raja P. Dhanalakshmi and V. Rajb

aDepartment of Chemistry, J.K.K.Nataraja College of arts and science,Komarapalayam, Namakkal-83,bAdvanced Materials Research Lab, Department of Chemistry, Periyar University,Salem-11*Corresponding Email: [email protected]

Annually, 2.2 million bone grafting operations are carried out worldwide in the fieldsof neurosurgery, orthopaedics and dentistry to repair bone defects [1]. Titanium (Ti)and its alloys are the most popular materials due to their excellent properties such asbiocompatibility, low specific weight, high corrosion resistance, and mainly itsmechanical properties necessary for load bearing applications. However, Titaniumand its alloys are susceptible to suffer attack in chloride containing solutions, e.g. thehuman body fluid or blood plasma [2]. Recently, various methods have been done toslow down the biodegradation rate of Ti alloy by using Biopolymer coating. Besidesimproving the biodegradation rate of Ti alloy, the biocompatibility should also beconsidered. The Hydroxyl apatite (HA) coating can satisfy the dual properties. HA isa major inorganic component of natural bone and can accelerate the bone growth.But the mechanical strength of HA is too poor to be used in load-bearing applications[2]. So HA along with cationic substitution (Rare earth metal) coating was depositedon the surface of metallic implants to improve the biocompatibility property.

Keywords: Electrodeposition, Hydroxylapatite, Titanium, Rare earth metal andCorrosion.

References[1] R. Murugan, S. Ramakrishna,Compos. Sci. Technol. 65 (2005) 2385–

2406.[2] C. Aparicio, F. J.r Gil, C. Fonseca, M. Barbosa, J.A. Planell, Biomaterials 24

(2003) 263–273.


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PP – 11

Fabrication of alumina / SiO2 – chitosan composite coatings withadvanced anticorrosive properties

R. Mohan Raj and M. KaviyaDepartment of Chemistry, J.K.K.Nataraja College of arts and science,Komarapalayam, Namakkal-83,*Corresponding Email: [email protected]

Chitosan-polypyrrole-SiO2 composites were synthesized by electropolymerization ofpyrrole in chitosan solution using H2SO4 as an oxidant. The synthesized compositeswere loaded on Al plate using DC Power supply. XRD and FTIR analyses showinteraction between chitosan and polypyrrole. Microstructural analyses reveal theformation of polymer particles with distinct spherical morphology. SiO2 particlesembedded in the polymer matrix are clearly noticed from the FESEM micrographs.Tafel plots exhibit significantly high corrosion protection efficiency for 2.0 wt%loading of chitosan- SiO2 composite. The weight loss measurements and salt spraytest results clearly exhibit superior corrosion resistance offered by coatings withchitosan-SiO2 composite. The synergistic interaction between the chitosan and theSiO2 in the composite is expected to improve the corrosion resistance properties ofthe coatings. The SiO2 particles present in the composite reinforce the integrity of thecoating under corrosive conditions.

Keywords: Electropolymerization, polymer, Aluminum, Corrosion, andElectrodeposition

References[1] . G. Ruhi, O.P. Modi and S.K. Dhawan, Synthetic Metals 200 (2015)

24–39.[2] A. Gergely, E. Pfeifer, I. Bertóti, T. Török, E. Kálmán, Corros. Sci. 53 (11)

(2011) 3486–3499


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PP – 12

Tungsten-doped barium strontium titanate as photoanodes for dyesensitized solar cells

V. Kavitha a, P. Mahalingam b and N. Sethupathy a*

aDepartment of Physics, Aringnar Anna Government Arts College, NamakkalbDepartment of Chemistry, Aringnar Anna Government Arts College, Namakkal*Corresponding Email: [email protected]

Tungsten doped barium strontium titanate photoanodes (Ba0.5Sr0.5Ti 1-xWxO3) forDSSC were prepared using sonication assisted solid state reaction followed bycalcinations at 800°C with different doping ratios of 2 and 4 mol %. The preparedTungsten doped barium strontium titanate (BSWT) photoanodes were characterizedby X-ray diffraction, UV–Vis absorption spectroscopy, photoluminescence spectra,field emission scanning electron microscopy and transmission electron spectroscopy.Electrochemical properties were examined by electrochemical studies.Electrochemical impedance spectroscopy proposed that 4 mol% of tungsten dopedBST photoanode showed the highest ionic conductivity. The high ionic conductivitysuggests that the tungsten is an encouraging dopant to form BST as photoanodes forDSSC applications. AFM analysis of BSWT photoanodes are equally aligned slightlyagglomerated cubic structure in nano scale. The mean value of roughness is -18.629nV for entire sample area due to this reason BSWT suitable for photoanodeapplications. The resulting photoanodes exhibits well-defined redox responsesanalyzed from cyclic voltammetry. The I-V characteristic studies conclude the 2.81%of power conversion efficiency for 4% tungsten doped BST (1.9%) which is higherthan all other samples. From the obtained results of this work, tungsten doped bariumstrontium titanate as photoanodes depicts good photovoltaic performances in thefield of dye-sensitized solar cells.Keywords – Tungsten doped BST, Photoanode, Electrochemical studies.


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PP – 13

Recent trends in nano materials applications in environmentalmonitoring and remediation


Environmental pollution is one of the greatest problems that the world is facingtoday, and it is increasing with every passing year and causing grave and irreparabledamage and chemical characteristics, have great promise to combat environmentalpollution. Nano technology is being used to devise pollution sensor. The variety ofmaterials in their Nano form like iron, titanium di oxide, silica, zinc oxide, carbonNano tube, dentrimers, polymers etc. are increasingly being used to make the airclean, to purify water and to decontaminate soil.

Nano technology is also being used to make renewable energy cheaper and moreefficient. The use of Nano technology in agriculture sector will reduce theindiscriminate use of agro-chemicals and thus will reduce the load of chemicalpollutant. While remediating environmental pollution with Nano materials it shouldalso be monitored that those materials do not contribute further degradation of theenvironment. This review will focus broadly on the applications of Nano technologyin the sustainable development with particular emphasis on renewable energy, airwater and soil remediation besides; the review highlights the recent development invarious pollution monitoring and remediation.

PP – 14

Investigation on optimization of conventional drinking watertreatment plant



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Conventional drinking water treatment plants consist of coagulation, flocculation,sedimentation, filtration and disinfection units. Depending on water quality influent,each unit can be optimized to achieve the desire water quality effluent, both in designand operation stages. A typical water treatment plant has the combination ofprocesses needed to treat the contaminants in the source water treated by e facilitythe presence of unbeatable organic or mineral substances causes some problems inobtaining drinking water understanding these phenomena requires taking intoaccount the physical and chemical natures of the water to be treated. Optimization ofconventional drinking water treatment plant means to achieve the most efficient andeffective use of our water treatment. Plant regarding some principles, achievement ofconsistently high quality finished water on a continuous basis and the important tofocus on overall plat performance, instead of focusing too much on individualprocesses.

This paper presents a review on optimization of conventional drinking watertreatment plant that eventually proposing a method to maximize process efficiencywith less risk. Overall optimization was carried out by dynamic programming tomeet the drinking water quality standards.

PP – 15

Structural and optical characterization of pure and cadmium dopedserine zinc acetate NLO crystals

R. Sakunthaladevia and L. Jothib

aDepartment of Physics, Trinity College for Women, Namakkal-637002, India.bDepartment of Physics, Namakkal Kavignar Ramalingam Government Arts Collegefor Women, Namakkal - 637001, India.*Corresponding Email: [email protected]

Optical quality single crystals of Serine Zinc Acetate (SZA) and Cadmium dopedSerine Zinc Acetate were grown by slow evaporation solution growth technique, toimprove the optical properties of the grown crystal. The cell dimensions wereobtained by single crystal X-ray diffraction study and the results of both SZA andCadmium doped SZA were compared. The various functional groups were identifiedfrom FTIR studies, it showed a little violation between pure and metal doped SZA.


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The optical behaviour of the grown crystals was analysed through UV-VIS-NIRspectrum and the spectrum exhibited a better transmission in the visible region. TheVickers microhardness study revealed the hardening nature of the grown materialsand it indicated the metal doped SZA had little improved hardness compared to pureSZA. The decomposition temperature and melting point of the pure and cadmiumdoped SZA crystal was measured from thermal studies. The NLO activity of thegrown crystals was tested by using Kurtz-Perry powder technique.

Keywords: Single crystal XRD, FTIR, UV-VIS-NIR, Microhardness, Thermal, NLO.

PP – 16

Molecular structure, vibrational, molecular orbital and populationanalysis of charge transfer NLO active material: 4-dimethylaminopyridinium picrate for optoelectronic applications

G. Sivaraja, N. Jayamania,b* and V. Sivac

aDepartment of Physics, Periyar University Salem-636 011, India.bDepartment of Physics, Government Arts College Salem-636 007, India.cDepartment of Physics, International Research centre, Kalasalingam Academy ofResearch and Education, Krishnankoil-626 126, India.*Corresponding Email: [email protected]

4-Dimethylaminopyridinium Picrate (4DMAP) has been studied using theDFT(B3LYP) and HF with 6–311++G(d,p) basis set. Optimum moleculargeometries, electronic properties, energetics and electronic densities of these systemshave been discussed Vibrational assignments of 4DMAP are discussed by FT-IRand FT-Raman spectroscopic studies. The assignments are compared with DensityFunctional Theory calculation and it shows good agreement with experimentaldata. Frontier molecular Orbital analysis clearly depicts the occurrence ofintermolecular N-H⋯O hydrogen bond influencing the charge transfer in the system.Optimized geometry also proves that the hydrogen bonding interaction's role in theelectronic charge transfer between cationic and anionic moiety. MolecularElectrostatic Potential study predicts the possible sites for hydrogen bondingnucleophilic and electrophilic interactions. Mulliken charge analysis demonstratesthe accumulation of positive and negative charge on atoms and their participation inhydrogen bonding interactions. Thermodynamics properties of the material were


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determined The calculated first order hyperpolarizability is found to be 12 times thanthat of urea.

Keywords: Molecular geometry, HOMO-LUMO, FT-IR, FT-Raman, NonlinearOptics.

Graphical Abstract:

Optimized Structure of 4-Dimethylaminopyridinium Picrate

PP – 17

Stability/instability nature in neuronal microtubulin lattices underthe effect of double-well potential

R. Priya1 L. Kavitha2 and D. Gopi3

1Department of Physics, Periyar University, Salem, India2Department of physics, School of Basic and Applied Sciences, Central University ofTamilnadu, Thiruvarur, India3Department of chemistry, Periyar University, Salem, India*Corresponding Email: [email protected]

The interiors of biological cells are structurally and dynamically organized throughthe presence of networks of interconnected protein polymers. These networks arereferred to as the cytoskeleton due to their bonelike structure, of the variousfilamentary structure which comprise the cytoskeleton, microtubules (MTs) appear tobe the most prominent ones. MTs may be the brains of the cell, particularly neurons-operating like a computerized. We model the Hamiltonian in the neuronalmicrotubulin system under the influence of double - well potential. The Hamiltonian


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describing the interaction between the two neighbouring filaments of neuronalmicrotubules is dipole-dipole in nature having double – well and with higher ordernonlinear potentials which may be represented by the u4 model. In addition to that wemodel the Hamiltonian of u and ф model, which may be represented as longitudinaland radial displacements of neuronal microtubulin system. From this Hamiltonian,we derive the discrete equations of motion and by using the Rotating waveapproximation (RWA) to get discrete Nonlinear Schrodinger (DNLS) like equations.In order to analyze the instability nature of the system which attribute for the energylocalization phenomenon, we perform modulational instability (MI) analysis for boththe DNLS equations of motion under the influence of double well potential andelectric field. These localization paves way for bio-energy transport in intracellularcommunications.

PP – 18

Fabrication of gelatin incorporated yttrium, cerium substitutedhydroxyapatite nanocomposite for biomedical application

P. Saravanakumara, R. Ramachandrana, L. Kavithab and D. Gopi a,*

aDepartment of Chemistry, Periyar University, Salem 636 011, Tamilnadu, IndiabDepartment of Physics, School of Basic and Applied Sciences, Central University ofTamilnadu, Thiruvarur-610 101*Corresponding Email: [email protected]

Hydroxyapatite (HA) [Ca10(PO4)6(OH)2] is a part of the apatite family widely usedas a bioceramic material, having its chemical and mineral phases analogous to that ofnatural human bone. Recently, dual ionic substitutions have been anticipated as atool to improve the biological properties of HA. Nanosized HA powders showimproved sinterability and enhanced densification owing to the greater surface area,which may enhance fracture toughness, as well as other mechanical properties. Toimprove the bioactivity and antibacterial activity of pure HA, yttrium (Yt) andcerium (Ce) ions have been introduced in the HA matrix (Yt, Ce-HA). Also, thebiopolymer e.g. gelatin has the ability to improve the bioactivity of the HA and caninfluence the particle nature of the sample. The present work deals with the synthesisof gelatin biopolymer incorporated Yt, Ce-HA nanocomposite by hydrothermalmethod. It is found that the incorporation of the gelatin plays an important role in themorphological changes of Yt, Ce-HA. The composition, crystallinity and


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morphological changes of the nanocomposite using Fourier transform-infraredspectroscopy, X-ray diffraction, and scanning electron microscopy wereinvestigated, respectively. The IN VITRO bioactivity of the as-prepared nanocompositesamples were examined by soaking it in a simulated body fluid for various days.Also, the antibacterial activity of the as-synthesized nanocomposite sample wasevaluated against two prokaryotic strains. The as-fabricated nanocomposite resultedin good crystalline nature and exhibited the particles of size around 100 nm whichplays a significant role in biomedical applications with good bone bonding abilityand antibacterial property.

Keywords: Poly (Vinyl Pyrrolidone), Substituted Hydroxyapatite, Gelatin,Bioactivity and Antibacterial activity.

PP – 19

Photoluminescence and structural characterization onpraseodymium (Pr3+) doped rubidium chloride (RbCl) singlecrystals

D. Roobanguru* and S. BangaruDepartment of Physics, Arignar Anna Government Arts College, Namakkal -637 002,Tamilnadu, India.*Corresponding Email: [email protected]

The luminescence properties of Pr3+ ion in RbCl host have been investigated. Theexcitation bands observed in the region 380-530nm are attributed to the transitionsfrom 4f level to the 5d crystal field splitting levels of Pr3+ doped RbCl. Emissionbands originated due to transition of 3P2

3H6 (564 nm), 3P0 3H6 (604 nm), 1D2

3P4 (721 nm) and 3P0 3F2(a shoulder 659 nm) have been observed. Optical

absorption, Photoluminescence (PL) and SEM studies confirms the trivalent state ofPr3+ ion in RbCl host the transition and wavelength are tabulated. The lattice cellparameters of Pr3+ doped RbCl single crystals are a=b=c=6.596Å, α=β=γ=90ᵒarediscussed. From the SEM micrograph analysis, the particle size ranges from fewmicrons to 5 microns.

Keywords: RbCl, Pr3+, Photoluminescence, SEM


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PP – 20Mechanical, structural and vibrational characterization of Pr3+

doped KCL single crystals

S. Bharani * and S. BangaruDepartment of Physics, Arignar Anna Government Arts College, Namakkal -637 002,Tamilnadu, India.*Corresponding Email: [email protected]

This paper describes the single crystals of Pr3+ doped KCl grown byBridgeman Stockbarger method. The grown crystal was subjected to ScanningElectron Microscopy(SEM), Vickers’s Micro hardness. The mechanical strengthof the grown crystal was estimated by the vicker’s micro hardness test. Itconfirms that the grown material is found to be a soft material. The surfacemorphology analyzed by means of using SEM analysis. FT-Raman spectrumhave been presented, the vibrational modes and calculated stocks shift valuesare discussed.

PP – 21

Optical and photoluminescence studies on KBr:Nd3+ single crystals

V. Shanmugam* and S. BangaruDepartment of Physics, Arignar Anna Government Arts College, Namakkal -637 002,Tamilnadu, India.Corresponding Email: [email protected]

This paper presented the single crystals of Nd3+ doped KBr grown by theBridgeman–Stockbarger method. The grown crystal was subjected to Optical studies,Photoluminescence, Fourier transform infrared (FTIR), Powder X-ray diffractionmethod (PXRD), Scanning Electron Microscopy (SEM), The band gap value iscalculated by the Optical absorption. The various functional groups has beenidentified from FTIR studies with their vibrating frequency range from 400 to 4000cm-1 are presented. The structural studies on the grown crystals was carried out byPowder X-ray diffraction analysis technique and found that the hexagonal structure.The lattice cell parameter value were presented. The excitation and emissionproperties were studied by PL spectra. The excitation spectrum shows the peak at


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267nm. The emission spectrum exhibits 357nm, 395nm, 411nm, 459nm and793nm, corresponding to 5d → 4f transition. SEM image have been presented andthe particle size ranges from few microns to 10 microns.

PP – 22

Synthesis, growth, spectral, thermal and optical studies on a neworganic NLO crystal: triglycine perchlorate

E. Selvakumar and A. ChandramohanPostgraduate and Research Department of Chemistry, Sri Ramakrishna MissionVidyalaya College of Arts and Science, Coimbatore - 20, Tamilnadu, India.*Corresponding Email: [email protected]

A new third order nonlinear optical material Triglycine perclorate (TGP) has beensynthesized and colourless transparent rectangular shaped single crystals weregrown by slow solvent evaporation solution growth technique at room temperaturefrom its aqueous solution. The 1H and 13C NMR spectra were recorded to establishthe molecular structure of the synthesized compound. The crystal structure of TGPhas been determined by single crystal XRD analysis and it belongs to monocliniccrystal system with space group P21/m. Fourier transform infrared (FT-IR) spectralstudy has been carried out to identify the various functional groups present in the titlecompound. The UV-Vis-NIR transmittance spectrum was recorded in the range 200-2500nm, to find the optical transparency window and lower cut off wavelength of thetitle crystal. The thermo gravimetric (TG) and differential thermal analyses (DTA)were carried out to establish the thermal stability of the material.

PP – 23

Structural and optical characterisation of Cu doped lithium sulphatesingle crystal

K. Venkatesan1 and L.Jothi2

1Department of Physics, Sri Vidya Mandir Arts and Science College, Uthangarai,Krishnagiri.2Department of Physics, NKR Arts College for Women, Namakkal.*Corresponding Email: [email protected]


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In the recent years, non linear optical material attracts many industries because ofhigh structural and spectral properties. The nonlinear optical crystal Cu dopedlithium sulphate was grown by the solution growth method using slow evaporationtechnique. Cu doped lithium sulphate in 1:2 molar ratio and Cu doped lithiumsulphate single crystal were grown in normal room temperature. The grown crystalwas subjected to XRD, UV, FTIR, Microhardness, TG/DTA, EDAX and SEM. Thecrystal structure, lattice parameter and the group were determined by XRD. The bandgap, absorption and emission wave length are determined by UV spectrum. Thedifferent functional groups were found by FTIR and EDAX instrumentation. Themechanical property was found by hardness test. The thermal properties of growncrystal were analyzed by TG /DTA test. The surface features of the crystal werefound by SEM.

Keywords: Lithium sulphate Slow evaporation, Single crystal XRD, FTIR, UV,Hardness, TGA/DTA, LDT

PP – 24

Supramolecular architecture, hydrogen bonding assembly andphysical properties of 2-aminopyridinium monochloroacetatemonochloroacetic acid single crystal for NLO applications

S. Abirami, V. Siva and S. Asath Bahadur*Department of Physics, International Research Centre, Kalasalingam Academy ofResearch and Education, Krishnankoil-626 126, Tamil Nadu, India*Corresponding Email: [email protected]

A new Organic, third order nonlinear optical (NLO) 2-aminopyridiniummonochloroacetate monochloroacetic acid (2APMMA) single crystal wassuccessfully grown by using slow evaporation method. The crystal structure and unitcell parameters of 2APMMA single crystal were analysed by using single crystal X-ray diffraction analysis. The crystal packing is identified to the stabilized throughthree dimensional hydrogen bonding network between cation and anion N–H∙∙∙Ohydrogen bonds. The functional groups present in the grown crystal have beenidentified by using FTIR spectral analysis. The optical transmittance window and thelower cutoff wavelength of the grown crystals have been identified by UV–vis–IRstudies. Mechanical stability of single crystal was carried out by Vickers


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microhardness test and it belongs to soft material category. The nonlinear refractiveindex, nonlinear optical absorption coefficient and third order nonlinearsusceptibility values have been calculated from the Z-scan experiment. Theoptimized geometry, polarizability and hyperpolarizability, Frontier molecularorbitals, Mulliken’s charge and molecular electrostatic potential were investigated byDensity Functional Theory.

Keywords: Crystal Growth, Optical properties, Mechanical stability, Third ordernonlinear optical properties.

PP – 25

Synthesis and Characterization of MnFe2O4 nanoparticles forbattery applications

P. Durga Devi and T. Theivasanthi*Department of Physics, International Research Centre, Kalasalingam Academy ofResearch and Education, Krishnankoil-626 126, India.*Corresponding Email: [email protected]

MnFe2O4 materials were synthesized in nanoscale dimensions by combustion methodusing Iron (III) nitrate and manganese nitrate, which are used as starting materials.Prepared MnFe2O4 nanoparticles are confirmed using various characterizationtechniques like XRD, FTIR, UV-Vis, SEM, TEM, BET and VSM analysis. Thestructural, morphological and electrochemical properties were examined by means ofX-ray diffraction (XRD), Scanning electron microscopy (SEM), Cyclic Voltammetry(CV) and Charge-Discharge tests. The pure cubic crystalline phase of MnFe2O4 isconfirmed and the crystallite size is calculated using Debye-Scherrer formula usingXRD analysis. FT-IR shows the presence of functional groups and impurities insample. The optical property was analyzed using UV-Vis absorption spectralanalysis. The surface area of the nanoparticle is calculated by BET technique whichis more important for battery applications. The superparamagnetism is identified withVSM analysis. Battery performance is done by cyclic voltammetric analysis inelectrochemical workstation.

Keywords: MnFe2O4, XRD, VSM, Optical properties, Voltammetric analysis.


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Structural, thermal and electrical properties of WO3 nanoparticlesprepared by wet chemical technique

T. Thilagavathi and D. Venugopal*PG & Research Department of Physics, Gobi Arts & Science College,Gobichettipalayam – 638453, Tamilnadu, India.*Corresponding Email: [email protected].

Tungsten Oxide Nanoparticles were synthesized by simple and low cost wetchemical technique using Sodium tungstate dihydrate and oxalic acid as startingmaterials. The synthesized Nanoparticles were characterized by X-ray powderdiffraction (XRD), Fourier transform infrared spectroscopy (FT-IR), TG – DTA andDC conductivity studies. XRD assessed result indicates the crystalline improvementalong (200) orientation. The crystallite size of the plane (200) is found to be 36 nm.The presence of O – W – O stretching at 636.34 cm-1 is confirmed from FTIR study.In TG analysis significant weight losses observed in the samples which shows thesample is high purity in nature. The The DC conductivity was carried out from RT to120 ºC which indicates semiconductor nature.

Keywords: WO3, Diffraction, TG - DTA.

References[1] T. Thilagavathi and D. Venugopal, “Structural and Optical

Characterization of Tungsten Oxide Nanoparticles by Wet ChemicalTechnique,” vol. 7, no. 2, pp. 680–688, 2018.

[2] Vijay Bhooshan Kumar and Dambarudhar Mohanta “Formation of NanoscaleTungsten Oxide Structuresand Colouration Characteristics” Bull. Mater. Sci.,Indian Academy of Sciences, (34), pp. 435–442, 2011.


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PP – 27Synthesis, growth and characterization of non-linear optical organic2-amino-4-methylpyridinium 3-chlorobenzoate crystal by slowevaporation solution growth technique

C. Vidyaa, I. Ragavana, A. Priyadharsana, S. Shanavasa and P. M. Anbarasana*.aDepartment of Physics, Periyar University, Salem- 636 011, India.*Corresponding Email: [email protected]

Organic materials of 2-Amino-4-methylpyridinium 3-chlorobenzoate (AMC) weresuccessfully grown by the slow evaporation method. The solubility was found to below in water and so the crystallization AMC was performed from its aqueoussolution. The title compound belongs to non-centrosymmetric space group P21 in amonoclinic crystal system revealed by X-Ray Diffraction (XRD) study. The FTIRspectrum result confirms the various functional groups present. The opticaltransmittance with their cutoff wavelength has been identified by UV-Vis-NIRstudies. The micro hardness measurements were used to investigate the mechanicalproperty of the grown crystal. Thermo gravimetric analysis and differential thermalanalysis have also been carried out, and thermal stability shown good quality. SecondHarmonic Generation (SHG) on powder sample has been measured using the Kurtzand Perry technique. The dielectric studies were performed at different temperaturesand frequencies to analyze the electrical properties. Nonlinear optical (NLO)property confirms the SHG efficiency for the grown crystal.

Keywords: XRD, FTIR, UV-Vis studies, Thermal stability, SHG, grown crystal.

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The performance study of perovskite type solar cells using metalsubstituted SrTiO3 nanoparticles

*Indira Priyadharsini1,3, P. M. Anbarasan1 and V. Aroulmoji2

1Department of Physics, Periyar University, Salem - 636011, Tamil Nadu, India.2Center for Research and Development, Mahendra Educational Institutions,Mallasamiduam,Namakkal - 637 503 Tamil Nadu, India3Department of Physics, Muthayammal College of Arts and Science, Rasipuram,Namakkal - 637 503 Tamil Nadu, India


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Corresponding Email: [email protected]

Synthesis, characterization, fabrication and performance study of Perovskite typesolar cells based on SrTiO3 nanoparticles coated with a nano-scale thin layer of Mn /Fe were reported. The samples were synthesized using facile microwave irradiationmethod. The presence of SrTiO3 has been confirmed by XRD study. The materialsmorphology was analyzed through Scanning electron microscopy (SEM) andTransmission electron microscopy (TEM). An emission spectra around 530-540 nmwas observed in the Photoluminescence (PL). The band gap energy of Fe dopedSrTiO3 was calculated using Tauc’s plot and found to be 3.2 eV. Thickness of theprotective layer can be conveniently controlled by changing the molar ratio of Mn /Fe doped SrTiO3 used in the preparation of thin films and the optimum conditions forthe best performance of the perovskite solar cells are excited together with possibleexplanations for the variations observed when the molar ratio was changed. Thefabricated perovskite solar cell could be achieved more than an optimum light-to-electricity conversion efficiency of 4.74 %.

Keywords: SrTiO3, microwave irradiation method, low calcination temperature, Spincoating.

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Molecular structure, vibrational spectra and DFT computationalstudies of hydrocortisen

R. Uvarania and A. Manakab

aPG and Research Department of Physics, Thiruvalluvar Govt Arts College,Rasipuram.bDepartment of Physics, Muthayammal College of Arts and Science, Rasipuram.

*Corresponding Email: [email protected]

An organic material has been synthesized and characterized by UV-Visible, FT-IR,Raman and NMR studies. All theoretical calculations and structural optimizationparameters were conducted by using DFT approach withB3LYP/6-31G(d) basis setand the vibrational wave numbers were evaluated for the affection of hydrocortisenecompound by using transferable scale factor. The nonlinear optical properties of this


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compound the molecular orbitals (HOMO) and (LUMO) properties are performed todescribe the charge transfer with in crystal.

Keywords: Density functional theory, FT-Raman, FT-IR, HOMO-LUMO, First-order polarizability, Electronic Exicitation Energy.

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Conversion of eggshell biowaste into hydroxyapatite usingmicrowave reactor

D. Muthua, G. Suresh Kumarb and E.K. Girijaa*aDepartment of Physics, Periyar University, Salem 636 011, Tamil Nadu, IndiabDepartment of Physics, K.S. Rangasamy College of Arts and Science (Autonomous),Tiruchengode 637 215, Tamil Nadu, India*Corresponding Email: [email protected]

Hydroxyapatite [HA, Ca10(PO4)6(OH)2] have been widely used clinically in the formof powders, granules, various composites, etc. as, it is the main inorganic componentof bone and teeth. In the past decades, numerous chemistry and physics basedprocesses have been developed for the preparation of HA. Among them microwaveheating technology is emerging as an alternative heat source for rapid volumetricheating with shorter reaction time, higher reaction rate, homogeneous heating, eco-friendly, selectivity and high yield when compared to the other conventionalmethods. HA powder was synthesized by microwave irradiation method usingeggshell as the calcium precursor. The optimization of synthesis parameters such aspH, microwave power, volume and Ethylenediaminetetraacetic acid (EDTA)concentrations will be discussed.

Keywords: Hydroxyapatite, microwave irradiation, eggshell and EDTA

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Green synthesis and characterization of Mg doped CdSnanoparticles using aloevera leaf extract

N. Subathra, P. Duraisamy* and V. SangeethaaDepartment of Physics, Thiruvalluvar Govt.Arts College, Rasipuram-637401,Tamilnadu,


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*Corresponding Email: [email protected]

The present study focus on green approach in the synthesis of Mg doped CdSnanoparticles by utilizing the bio-components of leaves extract of Aloe vera. Greentechnology has been described as the development of clean technologies “tominimize potential environmental and human health risks associated with themanufacture and use of nanotechnology products, and to encourage replacement ofexisting products with the new nano-products that are more eco-friendly”. Cadmiumsulphide nanoparticle is known as CdS is wide-band gap semiconductor of II-VIsemiconductor group is n-type and it is synthesized by simple and eco-friendly greenapproach method. Nanoparticles are produced by plant extract are more stable in thecase of other synthesized methods. The synthesized nanoparticle is characterized byScanning Electron Microscope (SEM), X-ray Diffraction (XRD), Fourier TransformsInfrared Spectroscopy (FTIR), Ultraviolet-Visible Spectroscopy (UV-VIS). XRDcharacterizes in the final product as a CdS nanoparticle with sizes, ranges from 20-55nm. This facile green approach may provide a useful tool to large scale synthesis.

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Bio synthesis and characterization of Cu doped CdS nanoparticlesby using carica papaya peel extract

V. Sangeethaa, P. Duraisamy* and N. SubathraDepartment of Physics, Thiruvalluvar Govt.Arts College, Rasipuram-637401,Tamilnadu,*Corresponding Email: [email protected]

Nanoscience is interesting field for the researchers. Nanoparticles having a size of 1-100 nm in one dimension is used significantly concerning medical chemistry, atomicphysics, and all other known fields. Nanoparticles can be prepared by differentchemical, physical, and biological approaches. But the biological approach is themost emerging approach of preparation because, this method is different from othermethods eco-friendly and less time consuming. In this present work CdSnanoparticles were synthesized by a convenient, non-toxic, eco-friendly ‘green’Carica Papaya peel extract as a reducing agent and it have very good fuel capacity. Itplays important role of reducing agent and act as a fuel for synthesis. In this methodCdS nanoparticles were synthesis after calcinations at 400ºC where characterized by


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using X-ray diffraction (XRD), FTIR analysis, UV-Visible absorption spectroscopyand Scanning Electron Microscope (SEM), techniques to verify crystal structure,functional groups, and band gap energy and morphology of CdS nanoparticles. Thesestudies are confirmed that the CdS nanoparticles are hexagonal structure with particlesize 15-44 nm. The band gap of CdS nanoparticles is 3.06 eV.

Keywords: CdS nanoparticles, peel extract, X-ray diffraction, FTIR analysis, UV-VisSpectroscopy, band gap, crystal structure, SEM analysis.

PP – 33

Growth and characterization of nonlinear optical crystal zincthiourea sulphate

S. JeevarekhaDepartment of Physics, Thiruvalluvar Government Arts College, Rasipuram,Namakkal District.

The present communication deals with the single crystal growth and characterizationof zinc thiourea sulphate (ZTS) doped with different molar concentrations of basicamino acid l-arginine. Doped single crystals of ZTS were grown by solventevaporation method at constant temperature (35 °C). Doped crystals exhibitprominent morphological changes in different crystallographic planes. Incorporationof ZTS crystals has been estimated qualitatively by Fourier transformed infraredspectra. Lattice parameters were determined by powder X-ray diffraction analysis.The influence of the organic impurity on optical and mechanical properties has alsobeen studied.

PP – 34

Thermal analysis of two-phase closed thermosyphon (TPCT) usingnanofluids

S. Tharves Mohideena and R. Suresh Kumarb,*aProfessor, Institute of Road &Transport Technology, ErodebAssociate Professor, R.M.K.Engineering College, Chennai*Corresponding Email: [email protected]


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In this study, the thermal performance of two-phase closed thermosyphon (TPCT)using Al2O3(<50 nm), TiO2(4-8 nm)and ZrO2(5-25 nm) nanoparticle with base fluidwater is presented. The TPCT is fabricated from the copper tube with the outerdiameters of 6mm, 8mm and length of 800mm, respectively. The concentration ofnanofluid is varied from 3% and 4% by weight. The experimental work is carried outunder different operating conditions. The input parameters such as effects of heatinput, fill ratio and nanoparticle concentration on the thermal efficiency and thermalresistance of the TPCT were investigated, compared and discussed. From the results,it is observed that for different heat inputs, the efficiency of the TPCT increaseswhen Al2O3/water nanofluid was used instead of water and other nanofluids.

Keywords: Two-phase closed thermosyphon (TPCT), Al2O3 nanofluid, TiO2

nanofluid, ZrO2 nanofluid, thermal efficiency, thermal resistance

PP – 35

Synthesis and characterisation of ZnO and CdO nanoparticles

T. Anuradha1*, K. V. Vaishali1 and S. Pooranima1

1Department of Physics, SDNB Vaishnav College for Women, Chrompet, Chennai-600044.*Corresponding Email: [email protected]

Nanostructured transition metal oxides (MO), a particular class of nanomaterial, arethe obvious precondition for the development of carious novel functional and smartmaterials(1). These transition MO nanocrystals have been attracting much attentionfor fundamental scientific research and various practical applications due to theirunique physical and chemical properties (2). These properties are forcefully affiliateon the sizes, shapes, compositions, and structures of the nanocrystals, which have asignificant role in various application, such as solar cell, batteries, catalytic, superconductors(3). The objective of this studies are to synthesis Zinc Oxide (ZnO)nanoparticles using Zinc acetate dehydrate as a precursor and Solanum trilobatumleaves extract solvent and distilled water were used as medium. Cadmium Oxide(CdO) nanoparticles were prepared by precipitation method using Cadmium chlorideand Sodium hydroxide. The optical band gap of ZnO and CdO nanoparticle havebeen determined by using Ultra Violet-Visible (UV-Vis) absorption spectroscopy.The functional group deposited on the nanoparticles were studied using Fourier


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Transform Infrared (FTIR) Spectroscopy. The crystalline nature of the nanoparticlesformed was confirmed using X-ray Diffraction Studies (XRD).

Graphical Abstract:

References[1] Qiaobao Zhang., Kaili Zhang, Daguo Xu., Guangcheng Yang., Hui Huang.,

FudeNie., Chenmin Liu., Shihe Yang. J. Mater. Sci., 60 (2014) 208-337.

[2] Mohammad Shafiee. M.R., Kargar. M., Ghashang. M., J. Nanostruct., 6(2016) 25-28.

[3] Cushing. B.L., Kolesnichenko. V. K., O’Connor. C. J., Chem Rev., 104(2004) 3893.

PP – 36

Investigations on magnetic nanoparticles embedded hydroxyapatitenanoparticles: a potential candidate for magnetic hyperthermia

D. Karthickrajaa, S. Karthia, G.A. Kumarb and E.K. Girijaa*aDepartment of Physics, Periyar University, Salem 636 011, Tamilnadu, IndiabDepartment of Physics and Astronomy, University of Texas at San Antonio, SanAntonio, Texas 78249, USA*Corresponding Email: [email protected]

Magnetic nanoparticles are gaining great attention for biomedical applications suchas magnetic hyperthermia, targeted magnetic drug delivery and magnetic resonanceimaging applications. Among these applications, magnetic hyperthermia is anattractive mode of cancer therapy that can destroy tumor and cancer cells selectivelyon application of externally applied AC magnetic field using magnetic nanoparticleas thermoseed. The factors like, colloidal stability and biocompatibility of themagnetic nanoparticles (thermoseed) are very much important for bioapplications.


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Surface modification is the best tool to improve the colloidal stability andbiocompatibility. Generally, surface coating of thermoseeds are achieved bybiocompatible materials either organic or inorganic matrixes. Over the past decade,several organic coating are achieved however the possibility that the organic coatingmay disappear under harsh in vivo condition can be a concern. In the present work tocircumvent the above problem, fabrication of hydroxyapatite matrix coatedthermoseeds was attempted. The prepared magnetic nanoparticles were characterizedusing various analytical techniques via XRD, FTIR, TEM and VSM.

PP – 37

DFT and TD-DFT studies on diphenylamino derivatives: A dyesensitized solar cells

L. Sathyaa, P. Srinivasana*, B. Gnanavela and A. David Stephenb

aDepartment of Physics, Chikkaiah Naicker College, Erode, IndiabDepartment of Physics, Sri Shakthi Institute of Engineering and Technology,Coimbatore, India*Corresponding Email: [email protected]

Complex organic compounds with benzene/thiophene as pi-segments are inspectedas photo sensitizers for applications in dye sensitized solar cells. A new novel seriesof 2-((2-(2-(4-(diphenylamino) phenyl) thieno [3,2-b] thiophen-5-yl) thiophen-5-yl)methylene) malononitrile (M1) and 2-((5-(2-(4(diphenylamino)phenyl)thieno[3,2-b]thiophen-5-yl) thiophen-2-yl) methylene) malonotrile (M2) were systematicallyinvestigated by density functional theory (DFT) with HF/6-311G** and B3LYP/6-311G** basic sets. The HOMO and LUMO energy gap explains the fact thateventual charge transfer interaction is taking place within the molecule. Interestingly,the negative electrostatic potential (ESP) is concentrated solely around the N-atoms,whereas in the rest of the region a positive ESP to dominate. The results provide adirection for optimizing the dyes as efficient sensitizers in Dye Sensitized Solar Cells(DSSCs) and NLO applications.

Keywords: Dye Sensitized Solar Cells (DSSC), DFT, Electron density and ESP

Graphical Abstract:


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PP – 38

Delonix elata leaf extract mediated synthesis of NiO nanoparticleswith enhanced photovoltaic and photo catalytic properties

V. Kavitha1, P. Mahalingam2 and N. Sethupathy1*

1 Department of Physics, Aringnar Anna Government arts college, Namakkal2 Department of Chemistry, Aringnar Anna Government arts college, Namakkal*Corresponding Email: [email protected]

Nickel oxide (NiO) is one of the few p-type semiconductors that have successfullybeen used for the construction of dye-sensitized photocathode’s as well as dye-sensitized solar cells. The synthesis of nickel oxide nanoparticles has been achievedby using Delonix Elata leaf extract & nickel (II) nitrate as a precursor by employingthree different synthesis routes namely sonication, microwave assisted wet-chemicaland hydrothermal methods. To get a broader understanding about the influence ofprocessing parameter over the NiO nanoparticles, physico-chemical, photo catalytic,photovoltaic property, a comparative analysis was performed. From the above threesynthesis methods, Critical properties such as purity, crystallinity, catalyst andphotovoltaic property of the resulting NiO nanoparticles were optimized andconcluded for their application as dye-sensitized photocathode. The prepared nickeloxide nanoparticles were characterized using different techniques like XRD, FE-SEM, EDAX, TEM, FT-IR and AFM. Furthermore, the application of synthesized


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NiO nanoparticles as a photo catalyst and photocathode in DSSCs optimized usingUV and IV characterizations.

Keywords: Delonix Elata - NiO nanoparticles, Synthesis methods, Photovoltaic andcatalytic behaviors

PP – 39

Hydrothermal synthesis and Characterization of Cu2ZnSnSe4

chalcogenide nanoparticles for solar cell applications

S. Gokilapriya1 and G. Sahaya Dennish Babu2*1Department of Physics, Mahendra Arts and Science College, Namakkal – 637 5012Department of Physics, Chettinad College of Engineering and Technology, Puliyur-CF, Karur, Tamil Nadu – 639 114*Corresponding Email: [email protected]

From the late 2000s, Copper Zinc Tin Selenide (CZTSe) which is a quaternarysemiconducting compound has acknowledged with amazing attention for solar celland other optoelectronics applications. Achieving a quaternary compound withperfect stoichiometry is still a challenging aspect in semiconductor manufacturingindustries. Therefore, we have been made an attempt to synthesize CZTSenanoparticles using simple hydrothermal method at 200°C/24 h in programmablecontrolled oven. The as-prepared CZTSe nanoparticles were characterized by X-raydiffraction, Raman spectroscopy, FESEM, energy dispersive spectroscopy and UV-Vis spectroscopy techniques. The obtained results show that the prepared tetragonalquaternary phase (CZTSe) was presented with kesterite crystal structure, a preferredone, which is very close stoichiometric relations to the reported research in theliterature. The CZTSe nanoparticles synthesized in the present study exhibitanticipated properties in order to use them in solar cell applications. Details will bepresented.

Keywords: Chalcogenide nanoparticles, XRD, Raman spectroscopy,Thermoelectrics, Solar cells


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References[1] I. Repins, C. Beall, N. Vora, C. DeHart, D. Kuciauskas, P. Dippo, B. To, J.

Mann, W.C. Hsu, A. Goodrich, R. Noufi, Sol. Energy Mater. Sol. Cells 101,154 (2012).

[2] S. Bag, O. Gunawan, T. Gokmen, Y. Zhu, T.K. Todorov, D.B. Mitzi, EnergyEnviron. Sci. 5, 7060 (2012).

PP – 40

A novel rhombohedron-like nickel ferrite nanostructure: Microwavecombustion synthesis, structural characterization and magneticproperties

K.M. Nalinasree and G. Suresh Kumar*Department of Physics, K.S. Rangasamy College of Arts and Science (Autonomous),Tiruchengode 637 215, Tamil Nadu, India.*Corresponding Email: [email protected]

Research on nickel ferrite nanostructures has drawn a great interest because of itsinherent chemical, physical and electronic properties. In this study, we havesynthesized rhombohedron - like nickel ferrite nanostructure by a rapid microwaveassisted combustion method using ethylenediamminetetraacetic acid as a chelatingagent. X-ray diffraction, Fourier Transform Infrared spectrometer, transmissionelectron microscope and energy dispersive X-ray microanalyser were used tocharacterize the prepared sample. The magnetic behaviour was analyzed by means offield dependent magnetization measurement which indicates that the prepared sampleexhibits a soft ferromagnetic nature with saturation magnetization of 63.034 emu/g.This technique can be a potential method to synthesize novel nickel ferritenanostructure with improved magnetic properties.

Graphical Abstract:


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PP – 41

One step method to synthesize flower-like hydroxyapatitearchitecture using mussel shell bio-waste as a calcium source

M. Swetha and G. Suresh Kumar*Department of Physics, K.S. Rangasamy College of Arts and Science (Autonomous),Tiruchengode 637 215, Tamil Nadu, India.*Corresponding Email: [email protected]

Hydroxyapatite (HAp) is one of the calcium phosphate ceramics with Ca/P=1.67 andchemical formula Ca10(PO4)6OH2. It has received great interest for its use in variousbiomedical applications such as bone fillers, bone tissue engineering scaffolds,bioactive coatings and drug/protein delivery systems due to its excellentbiocompatibility, bioactivity, osteoconductivity and similarity with the mineralcomponent of calcified tissues. Applications of HAp are significantly affected bysize and shape of the particles.

Over the past few years, calcium-rich natural resource such as eggshell, snail shell,corals, sea shells and mussel shells were used to synthesize HAp. Among these,mussel shell is a natural composite material consisting of mainly aragonitebiomineral (95-99 %) and some organic matter. It is mostly discarded by the seafoodindustry in many countries and is being dumped as a bio-waste in landfill. . We havedeveloped a novel and facile method to convert mussel shell bio-waste intohydroxyapatite (HAp) biomaterial using microwave irradiation with the aid ofethylenediaminetetraacetic acid (EDTA) as chelating agent. The obtained HAp hadflower-like morphology which can be a potential candidate for developingbiomaterial for orthopedic applications. Moreover, the developed method has thepotential to recover the bio-waste and reduce environment pollution.Graphical Abstract:


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PP – 42

Green synthesis and antibacterial activity of hydroxyapatitenanorods for orthopedic applications

P. Sangeetha and G. Suresh Kumar*Department of Physics, K.S. Rangasamy College of Arts and Science (Autonomous),Tiruchengode 637 215, Tamil Nadu, India.*Corresponding Email: [email protected]

Biomaterials with antibacterial activity are widely developed for the treatment ofbone infection. Hydroxyapatite (HAp) is one of the calcium phosphate ceramics withCa/P=1.67 and chemical formula Ca10(PO4)6OH2. It has received great interest for itsuse in various biomedical applications such as bone fillers, bone tissue engineeringscaffolds, bioactive coatings and drug/protein delivery systems due to its excellentbiocompatibility, bioactivity, osteoconductivity and similarity with the mineralcomponent of calcified tissues. Applications of HAp are significantly affected bysize and shape of the particles.

In the present study, hydroxyapatite (HAp) nanorods were prepared by greensynthesis using Azadirachta indica and Coccinia grandis leaf extract. The preparedsamples were characterized by various characterization techniques and the resultsindicate that the prepared samples are constituted of phase pure polycrystalline HAphaving hexagonal crystal structure. Moreover, antibacterial activity test confirm thatthe HAp prepared using leaf extract as a solvent having significant antibacterialactivity against E. coli and S. aureus. Hence, green synthesis can be a prospectiveway to develop orthopedic biomaterials with antibacterial properties.

Graphical Abstract:


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PP – 43

A Investigation of nickel doped zinc oxide nanoparticles

K. Vidhya, G. Rubini and M. ThenmozhiDepartment of Physics, Sri Sarada College for Women (Autonomous), Salem-16

In this present work, we describe the optical properties of NPS and developments insimple chemical precipitation method for their synthesis. We focus on fluorescentimaging with their investigation of anti-microbial activity. It can been studied usingX-RAY diffraction, UV-visible absorption spectroscopy, photoluminescence andSEM. The average particles size was controlled within the range of 7 to 10 nm byvarying the size of the doped material. The optical absorption showed a blue shiftwith decreasing particle size. The FT-IR studies were carried out to analyses thespectral properties of the grown sample SEM studies confirmed the morphology ofthe grown nanoparticles to have network formation. Zinc oxide appears to stronglyresist microorganism. In addition Anti-microbial activity shows the killing effect.

PP – 44

High performance visible light photocatalytic activity of hexagonalshaped nanodiscs g-C3N4/NiO heterostructured nanocomposites

M. Sumathia, A. Prakasama*, P.M. Anbarasanb

aPG and Research Department of Physics, Thiruvalluvar Government Arts College,Rasipuram-637401, Tamilnadu, India.bNano and Hybrid Materials Laboratory, Department of Physics, Periyar University,Salem-636011, Tamilnadu, India*Corresponding Email: [email protected]

A hexagonal shaped NiO/g-C3N4 heterojunction composite was synthesized via afacile microwave irradiation route joint with succeeding calcination process. Thestructural, morphological and optical properties of the catalysts were characterizedby XRD, TEM, Raman, UV-DRS, PL and BET analysis. XRD and TEM resultsexposed that cubic structure and with two dimensional hexagonal discs shapedmorphology with sizes in the range of 30-40 nm. The incorporation of g-C3N4 causeda red-shift of the UV-vis absorption edge of NiO. Moreover, exfoliation of bulk g-


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C3N4 into two dimensional g-C3N4 nanodiscs offers large surface area (102 m2/g) andexposed active sites, which are beneficial for photocatalytic activity enhancement.The photocatalytic activity of the photocatalysts was analyzed by degradation ofCongo-red (CR) and Malachite green (MG) under induced visible light irradiation.The results demonstrates that NiO/g-C3N4 with 1.2 mass ratios shows the optimaloverall photocatalytic performance such as huge degradation efficiency (97 %), highrate constant (0.02012 min-1) and high stability (only loss ~3.5) after 7 cycles test(for MG dye). The superior photoactivity of NiO-g-C3N4 photocatalysts possibly willbe recognized to the successful interfacial charge transfer between NiO and g-C3N4,thus suppressing the recombination of the photoexcited electron-hole pairs.

Keywords: NiO/g-C3N4; Microwave irradiation; Visible light; Electron-holeseparation; Congo-red.

PP – 45

Synthesis, growth and characterization of L-alanine alaniniumnitrate single crystal

G. Krishnamoorthia, R. Uvarania*aPG and Research Department of Physics, Thiruvalluvar Government Arts College,Rasipuram-637401, Tamilnadu, India*Corresponding Email: [email protected]

A relative study on the pure L-alanine alaninium nitrate (LAAN) single crystals anddoped with lanthanum oxide (La2O3), urea (CH4N2O) and glycine (C2H5NO2) weredeveloped from fluid solution by slow evaporation strategy at room temperature. X-ray diffraction result reveals that LAAN crystallites with system with space bunchP21 and cell parameters a=7.836 Å, b=5.428 Å, c=12.809 Å and β=94.25°. Theseparameters were marginally changes for doped crystals compared to pure LAANcrystal. The UV results recommend that the great transmission property of the dopedLAAN crystal within the whole visible region guarantees its reasonableness for SHGapplications. The presence of dopants within the LAAN crystal was further affirmedthrough ICP studies. The functional groups were analyzed through Fourier changeinfrared spectra investigation. The microhardness and dielectric steady at 100 Hz wasfound to be broadly higher than that of pristine LAAN. The ac conductivity wasfound to extend after doping due to the induced defects in crystal lattice. The grown


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crystals were also subjected to second harmonic generation (SHG) efficiency testsand it was found to be La2O3 doped LAAN crystal is 2.8 times greater than that ofKDP.

Keywords: Growth from solution; Doping; X-ray diffraction; Nonlinear opticalmaterial; Dielectric properties.

PP – 46

Microwave assisted synthesis of tin oxide nanoparticles using ricehusk as template

R. Vijayan1,* and N. Surumbarkuzhali2

1Department of Physics, Padmavani Arts and Science College for Women, Salem 6360112Department of Physics, Government Arts College (Autonomous), Salem 636 007*Corresponding Email: [email protected]

Tin oxide as well as silica nanoparticle is widely used as a anode materials in Li-ions battery. It is well known that rice husk is enriched with silica and it is used as atemplate for nanomaterial synthesis. Hence rice husk assisted synthesis of tin oxidemay provide novel materials for battery applications. In this study, rice husk wasused as a template to synthesis of tin oxide nanoparticles in microwave assistedmethod. The prepared product was characterized by characterization techniques likeXRD, FT-IR, TEM and UV-DRS. XRD and FT-IR analysis indicate that preparedproduct is consisting of amorphous silica and tin oxide. TEM analysis indicates thattin oxide nanoparticle is embedded in silica matrix. UV-DRS analysis indicateprepared product have band gap of 3.6 eV. These results clearly indicate that ricehusk template assisted synthesis of tin oxide nanoparticles can provide a novelpotential material for battery applications.

Keywords: Molecular geometry, HOMO-LUMO, FT-IR, FT-Raman, NonlinearOptics


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Graphical Abstract:

PP – 47

Synthesis and characterization of In2O3 nanoparticles

R. Kalaivani*1,2, M. Seetha2, T. Anitha2, N. Suryaprabha1, K. Menaka1

1Department of Physics, K.S.R. College of Arts and Science for Women,Tiruchengode, Namakkal – 637 215, Tamil Nadu.2Department of Physics, Kongunadu Arts and Science College, Coimbatore – 641029, Tamil Nadu.*Corresponding Email: [email protected]

The In2O3 nanoparticles were prepared by using hydrolysis method and the preparedsamples were calcinated at different temperature. Further used for variouscharacterization techniques such as X-ray diffraction, field emission scanningelectron microscopy, energy dispersive X-ray analysis and ultra-violet spectroscopyanalyses. From the XRD analysis, the crystal structure of the prepared samplesshows body centred cubic nature which was well matched with the standard values.The calculated crystallite sizes of In2O3 nanoparticles were approximately 15 nm.The cubic nature surface morphology was observed from the samples using FESEMimages and a slight distortion was observed in their morphology when increased thetemperature. Further their chemical composition nature was measured by usingEDAX analysis. The optical absorption bands were observed approximately at 315nm and their corresponding bandgap energy value 3.9 eV which was blue-shiftedabsorption nature. Hence, we have concluded that the prepared samples to be usedfor gas sensing applications.


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PP – 48

In situ green synthesis and characterization of ZnO/Agnanoparticles for anti-bacterial activity using cardiospermum leafextract

M. Kirubhakaran and S. Gayathri, Mr. S. Santhosh*Department of Physics (PG), K.S.Rangasamy College of Arts and Science(Autonomous), Tiruchengode*Corresponding Email: [email protected]

This research work describes a novel green approach for the synthesis of ZnO/Agnanoparticles at ambient/low temperature, where bamboo’s and magizham leaf(Cardiospermum leaf extract) extract functions as the zinc salt reducing agent.Different synthesis conditions provide control of particle size and size-distribution ofparticle formation. X-ray diffraction patterns confirm that ZnO nanoparticlessynthesized with Cardiospermum leaf extract extract is a potential candidate forfuture experimentation and implementation in the biomedical field. Theexperimentally synthesized ZnO/Ag nanostructures were characterized using theFTIR study has shown the presence of Zn-O bond, C-O bond, C-H, Ag-O bond andmetal oxygen bond. The average crystallite size is determined as 26.27 nm. TheTransmission Electron Microscope study has to show their different size of thenanoparticles in the range of 2nm-200nm.

The biosynthesized ZnO/Ag nanoparticles were found to outsmart conventionalantibiotics and plant extracts in the destruction of pathogenic microorganisms.Therefore, this kind of bio-doped oxide nanoparticles can productively reduce theinfections caused by microorganisms. This work has a great social relevance due toits non-toxic and inexpensive material which is suitable for environment and healthrelated applications.

Keywords: ZnO nps, XRD, FTIR, TEM, Antibacterial study, Co precipitation,bambusa vulgaris and artabotrys.


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Encanced antibacterial activity of ZnO nanoparticles via greensynthesis using bambusa vulgaris & artabotrys hexapetalus plantextracts

M. Sevvanthi and V.T. Jeielayaganga, Mr. S. Santhosh*Department of Physics (PG), K.S.Rangasamy College of Arts and Science(Autonomous), Tiruchengode*Corresponding Email: [email protected]

This research work describes a novel green approach for the synthesis of ZnOnanoparticles at ambient/low temperature, where bamboo’s and magizham leaf(bambusa vulgaris and artabotrys) extract functions as the zinc salt reducing agent.Different synthesis conditions provide control of particle size and size-distribution ofparticle formation. X-ray diffraction patterns confirm that ZnO nanoparticlessynthesized with bamboos and magizham extract is a potential candidate for futureexperimentation and implementation in the biomedical field. The experimentallysynthesized ZnO nanostructures were characterized using the FTIR study has shownthe presence of Zn-O bond, C-O bond, C-H bond and metal oxygen bond. Theaverage crystallite size is determined as 26.27 nm. The Transmission ElectronMicroscope study has to show their different size of the nanoparticles in the range of2nm-200nm.

The biosynthesized ZnO nanoparticles were found to outsmart conventionalantibiotics and plant extracts in the destruction of pathogenic microorganisms.Therefore, this kind of bio-doped oxide nanoparticles can productively reduce theinfections caused by microorganisms. This work has a great social relevance due toits non-toxic and inexpensive material which is suitable for environment and healthrelated applications.

Keywords: ZnO nps, XRD, FTIR, TEM, Antibacterial study, Co precipitation,bambusa vulgaris and artabotrys.


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Graphical Abstract:

TEM and Antibacterial Test for ZnO Nanoparticles

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Identification of phytoconstituents in tabernae montana (L) RBrflower: qualitative and quantitative analysis

R. Aishwarya, V. V. Sathibabu Uddandrao and Ganapathy Saravanan*Department of Biochemistry, K.S.Rangasamy College of Arts and Science(Autonomous), Tiruchengode*Corresponding Email: [email protected]

The present study was aimed to extract phytoconstituents by using soxhlet extractionin various solvents and identification of the phytochemicals by both qualitative andquantitative in Tabernae montanad ivaricata (L).R.Br flower.T.divaricata (L) R.Brflowers were collected in local market and made fine powder by using pulverizer,and then subjected to the soxhlet extraction in various organic solvents such asmethanol, acetone and chloroform. The extracts were vacuum dried and used for thepreliminary phytochemical analysis namely alkaloids (Kokate et al; 2001),flavonoids (Kokate et al., 2001), steroids (Prasant Tiwari et al., 2011), phenol(Brindha et al., 1981),carbohydrate (Brindha et al., 1981), Aminoacid (Brindha et al.,1981) and saponins (Kokate et al., 2001); quantitative estimation ofphytoconstituents also carried out.A preliminary phytochemical analysis ofT.divaricata R.Br. flower revealed that the presence of alkaloids, flavonoids,steroids, phenol, carbohydrate, aminoacids, protein, lipids and saponins in all organicsolvent extracts. Quantitative estimation of phyto constituents such as flavonoids inAcetone extract (0.2 mg), methanol extract (0.366 mg), chloroform extract (0.383mg), and phenol in acetone extract (3.83 mg), methanol extract (3.5 mg), chloroform


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extract (1.5 mg) found in good amount in all extracts. In conclusion, thephytochemical analysis revealed that T. divaricata R.Br. flower contained rich sourceof major phytoconstituents which demonstrate various beneficial properties inmedicine and further detailed study will be carried out to identify the beneficialcompounds by HPLC and its evaluation for its antihelmintic activity.

Keywords: Tabernae montana, Secondary metabolites, Natural products

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Effects of Mn/Co/Ni doping on magnetic and phtocatalyticproperties of WO3 nanoparticles by microwave irradiation method

M. Nivetha and A. Sneha, Mr. S. Santhosh*Department of Physics (PG), K.S.Rangasamy College of Arts and Science(Autonomous), Tiruchengode*Corresponding Email: [email protected]

In this paper, we discuss the synthesis and characterization of pure and silver(Mn/Co/Ni) doped tungsten oxide nanoparticles prepared by microwave irradiationmethod. The size and morphology were studied by powder X-ray diffraction and theresults reveal that the pure and Mn/Co/Ni (3 and 10 wt%) doped WO3 crystallizes inmonoclinic structure. TEM analysis shows both pristine and silver doped WO3nanoparticles were spherical morphology with a average size from 30 to 40 nm.Scanning electron microscopy result indicates spherical shaped morphology with anaverage diameter of 40–30 nm, which is in proper agreement with the averagecrystallite sizes calculated by Scherrer’s formula. A considerable red shift in theabsorbing band edge and decrease the band gap energy from 3.00 to 2.85 eV for Agdoped samples were observed by using UV-DRS spectra analysis. The defects incrystal and oxygen deficiencies were analyzed by photoluminescence studies. Thephotocatalytic activities of the pure and Mn/Co/Ni doped WO3 samples wereevaluated by the degradation of methylene blue in an aqueous solution under visiblelight irradiation. The photocatalytic activity for Mn/Co/Ni doped WO3 was muchhigher than pure WO3.

Keywords: WO3 nps, XRD, FTIR, Methylene Blue, Photocatalytic activity.


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Green synthesis of iron oxide nanoparticles from catharanthusroseus plant leaves

K. Babu1*, S. Shobana1, S. Jothimani2

1Department of Physics, K.S.R College of Arts and Science for Women,Tiruchengode, Namakkal, Tamilnadu.2Department of Physics, PGP Arts and Science College, Namakkal, Tamilnadu3Department of Chemistry, K.S.R College of Arts and science for Women,Tiruchengode, Namakkal, Tamilnadu.*Corresponding Email: [email protected]

In our present work, Iron oxide Nanoparticles were synthesized by Catharanthusroseus plant leaves. In this method, iron oxide Nanoparticles synthesized fromFeSO4.7H2O its act as a parent material. Synthesized Nanoparticles were studied atdifferent techniques such that XRD, SEM, EDAX, FT-IR, UV-Vis, PL andAntibacterial studies. From XRD studies confirmed that the average crystallite sizesare found and the value of Theda increases dislocation density gradually decreased.SEM shows that the surface morphology of iron oxide and EDAX verified thepresence of components in iron oxide nano particles. From UV-Vis absorptionspectroscopy iron oxide Np’s were confirmed at 215 nm due to Surface PlasmonResonance (SPR) and their band gap energy level is 5.76 eV using Tauc’s plot graphmethod. From the functional group analysis, this indicates Fe-O stretching of ironoxide confirmed at 558 and 594 cm-1. From Photoluminescence analysis confirmedthat wavelength increases band gap energy level decreases due to quantumconfinement effect. Thus, naturally synthesized iron oxide Nanoparticles can be usedfor different biological applications.

Keywords: Catharanthus roseus, Iron oxide, Surface Plasmon Resonance.


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Investigation of structural, morphological and antimicrobialproperties of Ag doped CeO2 nanocomposites using polyindole as areducing agent

M. Elangoa, b, c, M. Deepa c*, R. Subramaniand and G. SarawathyaResearch and Development Centre, Bharathiar University, Coimbatore - 641 046,Tamil Nadu, India.bDepartment of Chemistry, Gnanamani College of Engineering, Namakkal- 637 018,Tamil Nadu, India.cPG& Research Department of Chemistry, Muthurangam Government Arts College(Autonomous), Vellore - 632 002, Tamil Nadu, India.dDepartment of Chemistry, Sun Arts and Science college, Thiruvannamali- 606 755,Tamil Nadu, India.eDepartment of Chemistry, Government College of Engineering, Bargur- 635 104,Tamil Nadu, India.*Corresponding Email: [email protected]

Polyindole based nanocomposites doped with Ag‒ CeO2 nanoparticles were preparedby the reflux condensation method at inert atmosphere. The composition andmorphology of polyindole, CeO2 and nanocomposites were characterized by FTIR,XRD, TEM, SEM and UV–Vis. The characteristic FTIR peaks of polyindoleconfirmed the formation Pin-Ag/CeO2 due to the formation of H-bonding. The XRDstudy revealed the amorphous nature of the polyindole. The porous structure wasconfirmed by SEM. The spherical shaped nanoparticles assembly of Ag and CeO2 onthe surface of the polyindole was confirmed by TEM. The nanocomposites samplesshowed antibacterial and antifungal activities against pathogenic bacteria and fungi.Antimicrobial property of the Pin/Ag-CeO2 nanocomposites was evaluated. Thesenanocomposites can be used as nanomaterials in the field of Biomedical applications.


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Graphical Abstract

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Appraisal of sensory and proximate composition of carrot juiceincorporated cow milk paneer

M. Gracypeela, P. R. Nivedha and S. Vadivukkarasi*

Centre for Biological Sciences, Department of Biochemistry, K.S.RangasamyCollege of Arts and Science (Autonomous), Tiruchengode*Corresponding Email: [email protected]

Milk and dairy foods are considered to be one of the main food groups important in ahealthy balanced diet. In the present study we did an attempt to enhance thenutritional values by incorporating carrot juice in to cow milk paneer. 20% carrotjuice was added to cow milk to prepare carrot incorporated paneer and pure cow milkpanner was taken as control. The both paneers were subjected to evaluate the basicsof proximate composition and sensory evaluation by the sensory panelists accordingto 9-point Hedonic scale evaluation. Sensory evaluation studies revealed that 20%carrot juice incorporated cow milk paneer has highest acceptability in terms ofcolour, flavour, appearance and taste. Incorporation of carrot in paneer illustratedthat an enhancement in calcium, phosphorus, β-carotene, protein and lipid whencompared to normal paneer. In conclusion, our study revealed that incorporation of20% carrot shown highest acceptability by the panellists and proximate analysisdemonstrated that rich in nutritional values when compared to pure cow milk panner,this study may suggest that to incorporation of natural products such as carrot inpaneer can be used as better source to enhance nutrition.

Keywords: Carrot, Paneer, Sensory evaluation, Food products


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Microwave assisted combustion synthesis and characterization ofnickel ferrite nanoplatelets doped effects on rare-Earth irons

D. Koushikaa, M. Vanitha Srib and M. Venkatesha*aDepartment of Physics, K.S.Rangasamy College of Arts and Science (Autonomous),Tiruchengode- 637 215bDepartment of Chemistry, Government Arts College for Women, Salem – 636 008*Corresponding Email: [email protected]

Magnetic ferrites are a group of technologically important magnetic materials.Synthesis of nanocrystalline spinel ferrite has been investigated intensively in recentyears due to their potential applications in high density magnetic recording,microwave devices and magnetic fluids. Nickel ferrite has received much attentionbecause it is widely used in spintronics, microwave absorption, catalysis, gas sensors,lithium ion batteries and even in biomedicine. Nickel ferrite is a ferrimagneticmaterial and it exhibits an inverse spinel cubic structure. In particularly, thematerials containing 3d transition metals, the magnetism carriers are the electronsfrom the 3d shell that are considered to migrate from one atom to another. In rareearth (RE) metals, the magnetism carriers are the 4f electrons which are protected bythe 5s2 5p6 shells, so their magnetic moments are well localized at individual atoms.Small amounts of rare Earth element can affect the magnetic properties and themagnetic coercivity etc. Recently, nickel ferrite nanoparticles with various particlesizes, surface areas, and morphologies have been prepared by many methods.However, most of the methods employ complicated procedures, high reactiontemperatures, long reaction times, toxic reagents, and sophisticated processing. Thereare several plenty of developed methods, microwave synthesise have specialattention for the preparation of nickel ferrite nanoparticles because of manyadvantages like rapid heating, shorter time, fast reaction, easy reproducibility,particle size and shape control, high yield, high purity, efficient energytransformation and volume heating. However there are serious challenges indeveloping facile method to obtain pure, ultrafine and homogeneous nickel ferritenanostructures. To the best of our knowledge, there is no report on the preparation ofrare Earth doped nickel ferrite nanoplatelets via microwave combustion method.Here we report a rapid and facile microwave combustion method to prepare nickelferrite nanoplatelets under the influence of rare Earth iron with the aid of trisodiumcitrate as fuel.


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Keywords: Nanoplatelets, rare Earth doped Nickel ferrite, Microwave synthesis,Magnetic materials

References[1] M. Venkatesh, G. Suresh Kumar, S. Viji, S. Karthi, E.K. Girija, Microwave assisted

combustion synthesis and characterization of nickel ferrite nanoplatelets, ModernElectronic Materials 2 (2016) 74–78.

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Structural, optical and photocatlytic properties of zinc oxidenanoparticles obtained by simple plant extract mediated synthesis

C. Mahalakshmi and J. DuraimuruganDepartment of Physics, Laxminarayana Arts and Science College for Women,Dharmapuri 636 705, Tamil Nadu, IndiaCorresponding Email: [email protected]

We report a facile and inexpensive method to prepare zinc oxide nanoparticles withdifferent particle size and shape using Achyranthes aspera and Couroupita guianensisleaf extracts as the reducing agent and zinc nitrate as a precursor. The pre-pared zincoxide nanoparticles were analyzed by various characterization methods and obtainedresults evidently revealed that crystalline parameter, purity, optical absorption, bandgap, particle size and shape of the ZnO nanoparticles significantly influenced by thetype of leaf extract used as reducing agent. Further, photocatlytic activity studyobviously demonstrates that prepared samples exhibits superior photocatlytic activityfor the degradation of methylene blue dye by creating superoxide anion radicals andOH radicals under photonic irradiation. Hence, prepared zinc oxide nanoparticles byplant extract mediated synthesis can be applied as a photocatlyst for the possiblewaste water treatment in textile industry.

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Evaluation of bioactive components from Lawsonia inermis Linn

K. Jawahar, R. Krishnan and S. Arunambiga*Department of Biochemistry, K.S.Rangasamy College of Arts and Science(Autonomous), Tiruchengode*Corresponding Email: [email protected]


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Henna is the most important plant which plays a major role in world health care tocure many kinds of diseases by inhibiting the causative agent of disease. Hennapossessesvarious applications in medicinal field due to its toxicological, synergistic,analgesic, hypoglycemic, hepatoprotective, immunostimulant, anti-inflammatory,anti-microbial, anti-viral, anti-parasitic, anti-trypanomal, anti-dermatophytic, anti-oxidant, anti-fertility, tuberculostatic and anti-cancer activities. The present studywas aimed at investigating the evaluation of anti-microbialactivity of differentsolvent extracts fromLawsoniainermis against three major cultures like Escherichiacoli, Proteus vulgaris and Saccharomyces cerevisiae. The chemical constituentanalysis and the identification of the various composition of acetone extract weredone by GC-MS and HPLC analyses. The GC-MS spectrum analysis of theLawsonia inermis indicates the presence of nearly seven compounds each possessingdifferent pharmacological activities.The HPLC chromatogram of the acetone extractshows two peaks with the retention time of 11.308 and 35.155. The compoundsidentified from the plant extract can be further subjected to molecular Docking forthe comparison of structural interaction with theStaphylococcus aureus.

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Growth, structure, vibrational, optical characterization ofimidazolium glycine NLO single crystal

E. Sumathi, A. Aambika and R. Fathima Beebei*Department of Physics, K.S.Rangasamy College of Arts and Science (Autonomous),Tiruchengode- 637 215*Corresponding Email: [email protected]

Crystal growth is one of the most important field of material science, which involvescontrolled phase transition. A nonlinear single crystal of Imidazolium glycine weregrown by slow evaporation method at room temperature in universal solvent. Thesolution were prepared by mixing of Imidazole with glycine in 1:2 ratio. Opticallyclear and well-shaped crystals were grown. The characterisation of grown crystal bypowder XRD, FT-IR, UV visible method which is used to know about functionalgroups, spectral analysis and identification of crystalline material. From the PowderX-Ray diffraction it is found that the Imidazolium Glysine crystal belongs toMonoclinic crystal system. The highest peak value is 30.0160◦ obtained. The FTIRanalysis reveals C=C, C=N stretching frequencies and the carboxylic acid, amine,


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aromatic functional groups. The UV-Vis spectroscopic studies shows that the growncrystal have high transparency in entire visible region. The absence of stronglyconjugated bonds leads to higher optical transparency in the visible and UV spectralregions. The lower cut off wavelength was observed at 220 nm and it shows around95% transparency of the grown crystal.

Graphical Abstract:

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Identification of phytochemicals and its antioxidant potentiality ofabrus precatorius leaves

S. Mathavan, V. V. Sathibabu Uddandrao and Ganapathy Saravanan*Department of Biochemistry, K.S.Rangasamy College of Arts and Science(Autonomous), Tiruchengode*Corresponding Email: [email protected]

The present study was designed to extract the phytoconstituents in various solventsby using soxhlet extractionand identification of antioxidant capability of Abrusprecatorius leaves. A.precatorius leaves were made fine powder by using pulverizer,and then subjected to the soxhlet extraction by using methanol, hexane, and water.The preliminary analysis of phytochemicals namely flavonoids (kokate et al., 2001),glycosides, steroids (Tiwari et al., 2011), phenol (Bray and Thorpe Method),alkaloids and saponins (Kokate et al., 2001) were done by respective methods andantioxidant potentiality was tested through the DPPH scavenging activity byShimada et al., 1992 method. Qualitative analysis of phytoconstituents revealed that


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the presence of alkaloids, flavonoids, steroids, phenol, carbohydrate, amino acids,protein, lipids and saponins in all organic solvent extracts A.precatorius leavesextract was exhibited high antioxidant activity (2 mg/mL) in methanol extract. Inconclusion, A. precatorius leaves contained all major secondary metabolites andfound rich antioxidant potentiality. Hence, these leaves may utilize as source fornatural medicines. Conversely, detailed study is in under process to identify the exactphytoconstituents through HPLC and GC-MS responsible for these medicinalproperties.

Keywords: Abrus precatorius, Antioxidants, Medicinal plants, Natural products

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Sugarcane juice mediated synthesis of copper oxide nanoparticles,characterization and their antibacterial activity

A.P. Angeline Mary1, A. Thaminum Ansari2* and R. Subramanian3

1Department of Chemistry, P.S.V. College of Engineering and Technology,Krishnaigir-635108, Tamil Nadu, India.2PG & Research Department of Chemistry, Muthurangam Government Arts College(Autonomous), Vellore-632002, Tamil Nadu, India.3Department of Chemistry, Sun Arts and Science College, Tiruvannamalai-606755,Tamil Nadu, India.*Corresponding Email: [email protected]

Copper oxide nanoparticles were prepared using sugarcane juice (SCJ) as an eco-friendly stabilizing agent. Juice, 2, 5 and 10 ml of juice were added to the coppernitrate solution during the synthesis. The produced CuO NPs were analyzed FTIR,XRD, SEM- EDS, TEM SAED, Micro-Raman and XPS techniques. The formationof Cu-O bond was confirmed using the FTIR. The XRD analysis confirmed thecrystalline nature of the CuO NPs. SEM images confirm the nanoparticles formation.Elemental compositions were confirmed using EDS. Square, rectangular, cubiccylindrical and spherical shaped particles observed from the TEM micrographs. X-ray photoelectron spectroscopy (XPS) supported the formation of CuO NPs. Theresults revealed that the SCJ is a good stabilizing agent which reduces the size ofparticles significantly at higher concentrations and altered shapes to spherical.Hence, it sugarcane juice could be applied as a green stabilizing agent to fabricate the


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CuO NPs. Antibacterial activity of CuO NPs was assessed against some pathogenicbacteria.

Graphical Abstract

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Extraction of bioactive compounds from momordica charantia seedsand evaluation of its phytochemicals and antioxidant potentiality

C. Pavithra, P. R. Nivedha and S. Vadivukkarasi*Department of Biochemistry, K.S.Rangasamy College of Arts and Science(Autonomous), Tiruchengode*Corresponding Email: [email protected]

In the present study we extracted phytoconstituents by using soxhlet extraction invarious solvents and screened for phytochemicals by both qualitative andquantitative in Momordica charantia. M. charantia seeds were collected in localmarket and made fine powder by using pulverizer, and then subjected to the soxhletextraction in various organic solvents such as ethanol, n-butanol and water. Theextracts were vacuum dried and used for the preliminary qualitative phytochemicalanalysis by the method of Birunthaetal.,, then quantitative estimation of flavonoids(Zhishen et al., 1999) and phenol (Singletionet al., 1999) were done. Antioxidantpotentiality was found through DPPH radical scavenging activity by Shimada et al.,1992 method. A preliminary phytochemical analysis of M. charantia seeds disclosedthat the presence of alkaloids, flavonoids, steroids, phenol, carbohydrate, aminoacids, protein, lipids and saponins in all extracts. Quantitative estimation revealedthat rich amount of phytoconstituents such as flavonoids (0.33 mg/mL) and phenols(3.5 mL/mg). Antioxidant assay demonstrated that ethanol extract (0.96mg/mL), n-


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butanol extract (0.12mg/mL), water extract (0.02mg/mL) of DPPH radicalscavenging activity. In conclusion, the phytochemical analysis revealed thatM.charantia seeds contained rich source of major phytoconstituents which playsmajor role in natural medicine and found good antioxidant potentiality. However,further detailed study necessary to understand the exact mechanism of antioxidantpotentiality.

Keywords: Momordica charantia, Antioxidants, Free radicals, medicinal plants

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Surface and optical properties of undoped and Cu doped ZnOnanostructure

N. Deepa and J. DuraimuruganDepartment of Physics, Laxminarayana Arts and Science College for Women,Dharmapuri 636 705, Tamil Nadu, India*Corresponding Email: [email protected]

This paper reports on surface and optical properties of undoped and Cu doped ZnOnanostructures prepared by the green synthesis method. The prepared undoped andCu doped ZnO nanostructures are characterized by SEM, EDAX, FTIR, UV–vis andXRD analysis. Nano needle shape and Nano flower shape nanostructures areobserved in SEM analysis. EDAX analysis confirms the purity of the nanostructures.The presences of various chemical functional groups are confirmed by FTIRanalysis. The optical properties of undoped and Cu doped ZnO nanostructures areanalyzed by UV–vis analysis. The average particle size for undoped ZnO isestimated as 15 nm using the Scherrer formula by XRD analysis

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Creation of super-long bright channel using high NA lens axiconwith dedicated multibelt binary phase mask

K. Lalithambigai*, P.M. AnbarasanDepartment of Physics, Periyar University, Salem 636011, Tamil Nadu, IndiaCorresponding Email: [email protected]


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In recent years, high intense bright channels with a subwavelength focal spot and along Depth of Focus (DOF) in the focal region have been gaining more researchinterest for their practical applications in high-density optical data storage,photolithography, material processing, high-resolution imaging, and other uses. Herewe provide a theoretical approach to use a multibelt binary phase mask incombination with a high numerical aperture lens axicon to achieve a subwavelengthfocal spot with large uniform focal depth when illuminated by an azimuthallypolarized Laguerre–Gaussian beam. The intensity distributions are derived andevaluated based on the vector diffraction theory. Here we report a new method thatgenerates a transversely polarized light beam with sub diffraction beam size (0.384λ) that propagates without divergence over a long distance (of about 14 λ) in freespace. The authors expect such investigation is worthwhile for the applications of theoptical manipulation, optical microscopy and optical micromachining.

Graphical Abstract:

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Identification of phytoconstituents extracted from benincasa hispidaseeds by using GC-MSK. Pravin, P.R. Nivedha and S. Vadivukkarasi*Department of Biochemistry, K.S.Rangasamy College of Arts and Science(Autonomous), Tiruchengode*Corresponding Email: [email protected]

In the present study we extracted phytoconstituents by using soxhlet extraction inpetroleum ether solvent. The concentrated crude extract was subjected to GC-MSanalysis by as per manufacturer standard protocol. In the present study we made anattempt to identify the bio active factors from Benincasa hispida by using GC-MS. B.hispida seeds were collected from local market in erode, and then made fine powder


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by using polarizer. The powdered sample was subjected to soxhlet extraction bypetroleum ether, and then the extracted sample was analyzed to identify the bioactivefactors through GC-MS as per manufacturer standard protocol. GC-MS analysis thatnine compounds namely 2,4-Decadienal, (E,E)(11.89, 12.30), Carnegine (14.73,16.50), C Aminobutyric acid, N-isobutoxycarbonyl-, pentyl ester(21.05), 6-octadecenoic acid(23.22), 2-Oxo-1-oxa-spiro[4,5]decane-4-carboxylic aciddipropylamine(25.04), 4-[4-Diethylamino-1-methylbutylamino]-1,2-dimethoxy-6-bromonaphthalene(25.08, 26.74),6,9-Octadecadienoic acid, methyl ester(26.18),Spiro [4,5] decane-4-carboxylic acid, 7,7-dimethyl-2-oxo-1,8-dioxa-, dipropylamide(27.82, 29.12), Pentadecane, 6-methyl(30.72, 32.67) presented in the petroleum etherextract of B. hispida seeds. Many researchers found that these compounds have manytherapeutical potentialities. Hence, further detail study is in process to evaluate theantiproliferative activity on against colon cancer Ht29 cell lines of these compounds.

Keywords: Benincasa hispida, GC-MS, Medicinal plants, Cancer

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Synthesis and characterization of selenium nanoparticle fromaqueous extract of emilia sonchifolia leaves

I. Monika, S.Vijaykumar P. Mohanraj and A. Kathirvel*

Department of Chemistry, K. S. Rangasamy College of Arts and Science(Autonomous), Tiruchengode - 637 215, Tamil Nadu, IndiaCorresponding Email: [email protected]

Nanoscience and technology play an amazing role in environmental related issues.The green synthesis of nanoparticles is a convenient, inexpensive, rapid and eco-friendly method compared to traditional synthesis methods. The aim of this study isto synthesis of Selenium nanoparticles in non-hazardous method using an aqueousextract of Emilia sonchifolia leaf (Family: Asteraceae). Nanoparticles werecharacterized by Fourier Transform Infrared Spectroscopy (FT-IR), UV-VisibleSpectroscope, XRD (X-ray Diffraction), Particle size analyser, Scanning ElectronMicroscope (SEM) and Transmission Electron Microscope (TEM). The studiesclearly indicate that the synthesized Selenium nanoparticles in the range of 62 nm.The functional group involved in the synthesis of selenium nanoparticle weredetected with the help of FT-IR analysis. SEM result provided the particle size and


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external morphology of the selenium nanoparticles. Phase composition and crystalstructure of the selenium nanoparticles were determined by XRD technique. Thesynthesized selenium nanoparticles having potential antioxidant activity. So It’s usedas a free radical mediated diseases.

Keywords: Emilia sonchifolia, Selenium nanoparticles, Particle size analyser, UV-vis, FT-IR, XRD and FE-SEM studies.

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Experimental studies on caffeine mediated synthesis ofhydroxyapatite nanorods and their characterization

R. Subramanian1, 2*, P. Murugan1, M. Elango3and G. Chinnadurai4

1Department of Chemistry, Sun Arts and Science College, Tiruvannamalai 606 755,Tamil Nadu, India.2Department of Chemistry, K.S. Rangasamy College of Arts and Science(Autonomous), Tiruchengode 637 215, Tamil Nadu, India.3Department of Chemistry, Gnanamani College of Engineering, Namakkal 637 018,Tamil Nadu, India4Sacerd Heart Arts and Science College, Perani, Villupuram 605652, Tamil Nadu,India*Corresponding Email: [email protected]

Hydroxyapatite nanorods (HA) were synthesized using caffeine as a modifier.Various concentrations of caffeine were used to produce HA nanoparticles to studyits effect on size, shape and morphology. The HA was characterized by FTIR, XRDand TEM techniques. The formation of phosphate ion was confirmed using FTIR.Crystalline structure and phase of the nanoparticles was confirmed by XRD. Theformation of HA nanorods was confirmed by TEM images. The results obtained inthis study reveals that the HA nanorods synthesized using caffeine are uniform andvery much scattered. The average size of the nanorods figured from the XRD studywas in the range of 20-30 nm. The TEM and SAED investigation uncovered theshape, morphology and arrangement of HA nanorods with higher crystallinity. Thisinvestigation affirms that caffeine is a natural modofoer to produce HA nanorods.

Keywords: Hydroxyapatite; surface morphology; caffeine; nanorods; greensynthesis.


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Graphical Abstract

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Identification and estimation of phytochemical constituents fromleaves extracts of crotonbon plandianus., baill.

M. Jayapriya, V. V. Sathibabu Uddandrao and Ganapathy Saravanan*Department of Biochemistry, K.S.Rangasamy College of Arts and Science(Autonomous), Tiruchengode- 637 215, Tamilnadu, India*Corresponding Email: [email protected]

In the current study we extracted the phytochemicals by the use of soxhlet apparatuswith Acetone, Methanol and Water as solvents. Crotonbon plandianus Bail leavessamples were collected from tree and sugarcane farms in the village. The leafsamples were shade dried and ground to fine powder using mechanical grinder. Thepowdered sample was subjected to extraction with soxhlet apparatus using Acetone,Methanol and Water as solvents. Qualitative analysis was conducted to identify thephytoconstituents present in the extracts. The extracts were found to containalkaloids, flavonoids, phenols, carbohdydrates, tannins, glycosides and saponins withvaried concentrations depending on the solvent. Alkaloids were the highestconstituent in all solvents. Quantitative analysis was done to estimate the amount ofcompounds present in the sample with different solvents. Plant secondarymetabolites have been reported to exhibit therapeutic capacities. The high alkaloidand flavonoid levels might contribute to the therapeutic capacity of this plant. Thedetailed study is in under process to determine in vitro Anti-arthritic and Antiinflammatory potentialities of this plant

Keywords: Mosquitoes, Larvacidal activity, Natural products, Dengue


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The influence of Cu-doping on structural, optical and photocatalyticproperties of ZnO nanorods

N.S. Pavithara and J. DuraimuruganDepartment of Physics, Laxminarayana Arts and Science College for Women,Dharmapuri 636 705, Tamil Nadu, India*Corresponding Email: [email protected]

Undoped and Cu-doped ZnO nanorods with different copper contents were producedon glass substrates. The structural and optical properties of the samples wereinvestigated through X-ray diffraction (XRD), scanning electron microscopy (SEM)and photoluminescence (PL) measurements. Irrespective of the Cu content in ZnOnanorods, X-ray diffraction results showed that all the ZnO nanorods had ahexagonal structure with a strong preferred orientation along (002) direction. SEMresults indicated that increasing Cu content caused a change from the pyramidalgeometry to a hexagonal rod shape in the morphology of ZnO. Photoluminescencemeasurements exhibited two emission bands in the spectra: one sharpUltraviolet luminescence at ∼379 nm and one broad visible emission ranging from400 to 720 nm. The photocatalytic properties of undoped and Cu-doped ZnOnanorods synthesized by a chemical bath deposition method were studied for the firsttime in this study by using photocatalytic degradation of methylene blue as a modeldye.

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The structural and magnetic properties of gadolinium doped ofnickel nanoferrite using microwave combustion method

K. Poovarasua, M. Vanitha Srib and M. Venkatesha*aDepartment of Physics, K.S.Rangasamy College of Arts and Science (Autonomous),Tiruchengode – 637 215bDepartment of Chemistry, Government Arts College for Women, Salem- 636 008*Corresponding Email: [email protected]


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Nanophase ferrites are a class of magnetic materials that have been the mostattractive area of the research. Ferrites nanoparticles are usually prepared by variousphysical and chemical methods like mechanical milling, iner gas condensation, hydrothermalreaction, ceramic method, sol gel and co precipitation technique etc. Influence of rare earthions on spinel ferrite causes structural disorder and lattice strain, thereby increasing theelectrical and magnetic properties. The concentration of rare earth doping in the ferrites is

important in describing the properties of ferrites. Therefore, we used microwavecombustion method to prepare nickel ferrite nanoplatelets under the influence ofGadolinium rare Earth iron with the aid of uric acid as fuel.

Keywords: Nanoplatelets, rare Earth doped Nickel ferrite, Microwave synthesis,Magnetic materials

References[1] M. Venkatesh, G. Suresh Kumar, S. Viji, S. Karthi, E.K. Girija, Microwave

assisted combustion synthesis and characterization of nickel ferritenanoplatelets, Modern Electronic Materials 2 (2016) 74–78

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Phytochemical profile and antioxidant activity of anisochiluscarnosus leaves

A. Kathirvel*, P. Priyanka and S. Mohan RajDepartment of Chemistry, K. S. Rangasamy College of Arts and Science(Autonomous), Tiruchengode - 637 215, Tamil Nadu, IndiaCorresponding Email: [email protected]

The plants have a major source of phytomedicines for human healthcare and hasvarious phytoconstituents in them. The objective of this study is to determineantioxidant activity and phytochemical analysis of Anisochilus carnosus leaves byusing various solvents. The extract containing antioxidant potential is furtheranalysed by using GC-MS analysis. The ethylacetate extract of Anisochilus carnosusleaves have highest amount primary and secondary metabolities and it is mosteffective solvent for extraction of antioxidant potential containing compounds. TheGC-MS analysis is shows that A. carnosus leaves extract containingphytoconstitutions have many medicinal uses. It has some beneficial properties andgood effective source of health products for food and pharmaceutical industries.


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Keywords: Anisochilu scarnosus, Ethyl acetate, GC-MS.

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Plant extract mediated synthesis and optical properties of Mg dopedZnO nanoparticles

K.Tamilarasi and J. DuraimuruganDepartment of Physics, Laxminarayana Arts and Science College for Women,Dharmapuri 636 705, Tamil Nadu, India*Corresponding Email: [email protected]

We reports a facile approach for the synthesis of Mg doped ZnO nanoparticles usingaqueous leaf extracts of Leucas aspera. The synthesized Mg doped ZnO NPs werecharacterized using UV–visible spectroscopy, FTIR, XRD, FESEM and EDAXanalysis. FTIR results confirm that plant precursors act as reducing and cappingagents. X-ray diffraction confirms that the final products are pure and Mg dopedZnO crystal phase. FESEM with EDAX represented the synthesized NPs havingcubic shape and fully composed of nanoparticles. XPS analysis indicates that the as-prepared MgO nanoparticles were composed of MgO and plant precursor. Furtherantimicrobial activity of synthesized Mg-doped ZnO NPs extensively studied forGram-negative (Escherichia coli) and Gram-positive (Staphylococcus aureus).

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Growth and characterization of (Tris) thiourea doped zinc sulphatesingle crystals

P. Thanuprabha1 and S. Ramya2

1Department of Physics, Laxminarayana Arts and Science College for Women,Dharmapuri 636 705, Tamil Nadu, India2Department of Physics, Shri Sakthikailassh Women's College, Salem, Tamil Nadu,India

A new semi-organic nonlinear optical material of tris thiourea magnesium zincsulphate (TTMZS) crystal was synthesized and grown from aqueous solution by slowevaporation solution growth technique. Single crystal X-ray diffraction (XRD) studywas carried out to identify the lattice parameters. Various diffracting planes of the


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grown crystal were identified from the powder X-ray diffraction study. EDAXanalysis confirms the presence of metals in the TTMZS crystal. SEM shows the goodsurface morphology of the grown crystal. Fourier-transform infrared (FT-IR) studiesconfirm the presence of various functional groups present in the as grown crystal.The transmission spectrum shows that the lower cutoff wavelength lies around 280nm. The nonlinear optical (NLO) property of the grown crystal has been studied byKurtz powder second harmonic generation (SHG) test. The thermal analysisconfirmed that the crystal is stable up to 248.46 °C. The mechanical behavior hasbeen assessed by Vicker's microhardness indenter. Also dielectric measurements andphoto conducting measurements were carried on.

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Synthesis of ZnO nanoparticles and its photocatalytic activity

S. Archana and J. DuraimuruganDepartment of Physics, Laxminarayana Arts and Science College for Women,Dharmapuri 636 705, Tamil Nadu, IndiaCorresponding Email: [email protected]

The objective of the work is to develop a procedure to obtain ZnO nanoparticles viagreen synthesis formation with plant extracts. Caralluma fimbriata leaves wereutilized as template for synthesis of ZnO nanoparticles. After the complex formation,calcination of the complexes at the temperature related to thermal transformation wasconducted. XRD and UV-Vis spectrophotometric analysis were utilized to study theeffect of synthesis route to the physicochemical character and methylene blue waschosen as reaction model to evaluate the photoactivity. The results show that thematerials have photocatalytic activity which is related to the crystallite size as well asband gap energy values.

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Synthesis and characterization of manganese oxide nanoparticlesfrom gardenia resinifera leaves extract

R. Manjula, M. Thenmozhi, S. Thilagavathi and A. Kathirvel*

Department of Chemistry, K. S. Rangasamy College of Arts and Science(Autonomous), Tiruchengode - 637 215, Tamil Nadu, India


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Corresponding Email: [email protected]

Gardenia Resinifera (Family: Rubiaceae) is used in several traditional medicine. Thepresent study aimed to synthesis and characterization of Manganese oxidenanoparticles from G. Resinifera leaf extract. Synthesis of Manganese oxidenanoparticles was carried by stirring of Manganese acetate with hot aqueous extractof dry leaf of G. Resinifera with reference to green synthesis method. Thesynthesized Manganese oxide nanoparticles were characterized such as shape andsize by Fourier Transform Infrared Spectroscopy (FT-IR), Powder UV-VisibleSpectroscope, Powder XRD (X-ray Diffraction), Particle size analyser, FE-SEM(Scanning Electron Microscope) and Transmission Electron Microscope (TEM). Theresults of above mentioned studies were show evidence for the formation ofManganese oxide nanoparticles in the range of 17-35 nm and spherical in shape. Thefindings of FT-IR show the synthesized Manganese oxide nanoparticles possessvarious functional group which may have several biological properties.

Keywords: Gardenia Resinifera, Manganese oxide nanoparticles, XRD, SEM, TEM

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Removal of methylene blue dye using combination of activatedcarbon from wood apple outer shell and betel leafT. Vijayalakshmi and G.ElangoPG & Research Department of Chemistry, Government Arts College,Tiruvannamalai -606 603.

In this present study, the use of activated carbon of eco-green adsorbent wood appleouter shell (WA) and betel leaf (BL) has been used as an alternative commerciallyavailable activated carbon for removal of methylene blue dye. The activated BL andWA biomass was prepared by conventional chemical process and it wascharacterized by SEM and FTIR. The biomass adsorbents were mixed in thecombination of 1:0, 1:1, 1:2, 2:1, 0:1 and their adsorption removal were studiedamong these the combination BL : WA of 2:1 found to have efficient in removal ofdye than others. It was taken as optimum amount and effect of adsorbent, contacttime, dye concentration, stirring speed, temperature etc. were investigated. TheLangmuir and Freundlich model of adsorption data were presented. The desorption


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studies were done and concluded that the combination of both biosorbents may beused as a low cost alternative option for removal of methylene blue dye.

Keywords: wood apple outer shell, betel leaf, methylene blue, comparison,adsorption isotherm.

Graphical Abstract:

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Soliton excitation in chiral nematic liquid crystal system under theinfluence of electric and magnetic field

N. Surya Prabha*1,2, S. Dhamayanthi2, A. Mohana Priya2, R. Kalaivani1 and K.Menaka1

1Department of Physics, K.S.R. College of Arts and Science for Women,Tiruchengode, Namakkal – 637 215, Tamil Nadu.2Department of Physics, K.S.R. College of Arts and Science, Tiruchengode,Namakkal – 637 215, Tamil Nadu.*Corresponding Author Email: [email protected]

The Cholestric liquid crystal (FLC) subject to external electric field was studied byusing in the frame of soliton excitations for the director deformation. Then thedynamical equation represented in the form of Sine-Gordon like equation wasdeduced from the Frank free energy density of the system with a driving term byexternally applied electric and magnetic field. The effective exp-function methodwas invoked to solve the Sine-Gordon like equation for the soliton excitationsthrough which the director deformation occurs. Hence, it was observed that theapplied electric field constitutes the director to deform in the antisoliton into antilinksoliton. Hence, we have concluded that the shape changing scenario of thepropagating soliton could be exploited for the optics based liquid crystal displayapplications.


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Keywords: Cholestric liquid crystal, Sine-Gordon like equation, Frank free energydensity.

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Structural, morphology and optical properties WO3 nanoparticlesfor energy application

P. Periasamy1*, T. Krishnakumar2, Murthy Chavali3, Prem Felix Siril4, and V.P.Devarajan

1Department of Physics, Excel college of Engineering and Technology,Komarapalayam, Namakkal – 637 303, Tamilnadu, India2Department of Physics, Tagore Institute of Engineering and Technology, Attur,Salem – 636 112, Tamilnadu, India.3Analytical chemistry & Nanotechnology, VFSTRA University, Guntur – 522 213,Andhra Pradesh, India4School of Basic Sciences, Indian Institute of Technology Mandi, Mandi 175 001,India5Department of Physics, K.S.R. Arts College of Arts and Science for Women,Tiruchengode, Namakka l– 637 215, Tamilnadu, India

The WO3 nanoparticles were prepared by using simple microwave assisted methodand their structural, optical and morphological properties were characterized. Fromthe X-ray diffraction (XRD) analysis, the monoclinic and orthorhombic (WO3)crystal structure was obtained and its calculated crystalline size was approximately16 nm. From the Fourier transform infra-red spectroscopy (FTIR) analysis, thefunctional groups were analyzed and the W-O chemical bonding nature wasconfirmed. From the scanning electron microscopy (SEM) analysis, the surfacemorphology of the samples was observed. From the ultra-violet visible spectroscopy(UV-VIS) analysis, the optical properties were investigated and the calculatedbandgap energy value of WO3 was as 3.62 eV. From the spectrofluorometer (PL)analysis, the emission behaviors were investigated by using and an enhanced defectsreduced emission was obtained. Hence, the prepared samples are suitable forsupercapacitor application.

Keywords: Tungsten Oxide, Microwave irradiation, Nanostructure, Morphology


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Synthesis, structural and optical characterization of CdSnanoparticles

N. Om Muruga1, A. Balamurugan2, D. Sathes Kumar1 and Y.A. Syed Khadar3

1Department of Electronics, Government Arts College, Ooty – 643 002, Tamilnadu,India.2Department of Physics, Government Arts College, Ooty – 643 002, Tamilnadu,India.3Department of Physics, KSR College of Arts & Science for Women, Tiruchengode,Namakkal – 637 215, Tamilnadu, India.

The CdO nanoparticles (NPs) were synthesized through simple chemical method andtheir structural, optical and morphological properties were characterized. From XRDanalysis, the hexagonal crystal nature was confirmed. From SEM analysis, thespherical shaped surface morphology was observed and it has been approximately 50nm. From UV and PL analysis, the optical absorption and emission properties of NPswere investigated.

Keywords: CdO NPs, Structural and Optical properties.

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Structural, optical and bacterial activity ZnO nanoparticles

D. Sathes Kumar1, A. Balamurugan2, N. Om Muruga1 and Y.A. Syed Khadar3

1Department of Electronics, Government Arts College, Ooty – 643 002, Tamilnadu,India.2Department of Physics, Government Arts College, Ooty – 643 002, Tamilnadu,India.3Department of Physics, KSR College of Arts & Science for Women, Tiruchengode,Namakkal – 637 215, Tamilnadu, India

The CdO nanoparticles (NPs) were synthesized through simple chemical method andtheir structural, optical and morphological properties were characterized. From X-raydiffraction (XRD) analysis, the hexagonal crystal nature was confirmed. From


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scanning electron microscope (SEM) analysis, the spherical shaped surfacemorphology was observed and it has been approximately 50 nm. From ultraviolet(UV) and photoluminescence (PL) analysis, the optical absorption and emissionproperties of NPs were investigated. Further, the bacterial killing effects wereinvestigated on Escherichia coli. Hence, ZnO NPs are suitable for anti-microbialactivity.

Keywords: ZnO Nanopartilces, Optical and Bacterial activity.

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Crystal growth, dielectric and laser damage threshold properties oflithium hydrogen phthalate dihydrate single crystal

Senthilkumar Chandrana,*, Rajesh Paulraja and P.Ramasamya

aDepartment of Physics, SSN College of Engineering, Kalavakkam,Tamilnadu, India-603 110*Corresponding Author Email: [email protected]

Semiorganic single crystal of lithium hydrogen phthalate dihydrate was grown byslow evaporation solution technique. It crystallizes in the orthorhombic crystalsystem. Solubility and metastable zone width were calculated for varioustemperatures. Nucleation parameters such as surface free energy, critical radius,interfacial tension, Gibbs volume free energy change and number of molecules in thecritical nucleus have been determined for lithium hydrogen phthalate dihydrate.Intermolecular interactions of crystal were analyzed using three dimensionalHirshfeld surfaces and corresponding two dimensional fingerprint plots. Thefunctional group of the grown crystal has been confirmed by FTIR and FT-Ramananalyses. The crystal has good optical transmittance in UV-Vis-NIR region andlower cutoff was 316 nm. The crystal is stable up to 100 ºC. The crystal has very lowetch pit density on (0 0 1) surface. Laser damage threshold shows that in the lithiumhydrogen phthalate dihydrate crystal no surface damage occurs up to 35 mJ. Broademission peak observed at 448 nm indicates blue emission.


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Graphical Abstract:

Grown crystal of lithium hydrogen phthalate dehydrate

References[1] S.Chandran, R.Paulraj and P. Ramasamy, Opt.Mater, 2016, 52, 49–55[2] A.Senthil , P. Ramasamy and S.Verma, J. Cryst.Growth, 2011, .318,757–761[3] W.Gonschorek and H. Küjppers, Acta Cryst. B, 1975,31, 1068

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Investigate the elecctrochemical activity for magnesium oxidesembedded carbon spheres synthesis by facial hydrothermal method

M. Gayathri, R. Ranjithkumar, S. Ezhilarasi, N. Nallamuthu,S. Asath Bahadur and P. Devendran*Multifunctional Materials Laboratory, Department of Physics, InternationalResearch Centre, Kalasalingam Academy of Research and Education, Krishnankoil– 626 126.*Corresponding Email: [email protected], [email protected]

Synthesis and characterization of nanostructured MgO nanoparticles embedded onuniform carbon spheres by using simple hydrothermal method and polyvinyl alcohol(PVA) as binding agent. The MgO NPs embedded on uniform shape carbon spheresusing single source precursor by hydrothermal method. The prepared nanoparticleswere analyzed Its Optical properties of UV-visible spectroscopy (UV-Vis.), FT-IRand Raman spectroscopy The Synthesized nanocrystals have been investigated by itsstructural and morphological studies, like X-ray diffraction (XRD), HR-SEM (High-Resolution Scanning Electron Microscopy). Purity of prepared nanocrystals wasconfirmed by elemental analysis (EDS) and the prepared nanocomposites wereexamined by electrochemical activity.

Keywords: MgO NPs, Carbon spheres, Hydrothermal, Electrochemical activity.


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Synthesis and characterization of spinel structured NiCo2O4

nanoparticles for high performance supercapacitors

A. Pown, R.Packiaraj, P.Devendran, S. Asath bahadur and N.Nallamuthu*Department of Physics, International Research Centre (IRC), KalasalingamAcademy of Research and Education, Krishnankoil, Tamilnadu-625126*Corresponding Email: [email protected]

Spinel structured NiCo2O4 nanoparticles (NPs) was successfully synthesized byhydrothermal method. The structural, morphological Characterization of assynthesized NiCo2O4 NPs were analysed using various techniques such as X-raydiffraction (XRD), Fourier transform infrared spectroscopy (FTIR) and Scanningelectron microscopy (SEM) with elemental analysis spectrum (EDX). X-raydiffraction pattern revealed the formation of spinel crystal structure and confirmationof nanocrystalline for NiCo2O4 sample. Electrochemical behaviour for the modifiedelectrode of NiCo2O4 NPs was investigated using cyclic Voltammetry (CV),Galvanometric charge and discharge (GCD) and electrochemical impedancespectroscopy (EIS) techniques in 1 M KOH electrolyte using a three electrodesystem. The specific capacitance values were calculated and cyclic stability of theelectrodes was measured.

Keywords: Spinel structure, Hydrothermal, XRD, FTIR, SEM, Electrochemical

Graphical Abstract:

XRD pattern - NiCo2O4 particles


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Investigation of benzothiazole derivatives as corrosion inhibitors formild steel copper

S.Anbalagana and M. Ravishankarb

aDepartment of Chemistry, Laxminarayana Arts and Science College for Women,Dharmapuri 636 705, Tamil Nadu, IndiabDepartment of Chemistry Rajah Serfoji Govt College (Autonomous), Thanjavur,Tamil Nadu, India

The influence of benzothiazole derivatives on corrosion inhibition of mild steel in 1M H2SO4 was studied by weight loss, potentiodynamic polarization and AC-impedance techniques. The synergistic effect by the addition of halide ions had beenstudied. The experimental results showed that the inhibition efficiency increases withincreasing inhibitor concentration, but decreases with increasing temperature;potentiodynamic polarization curves showed that benzothiazole derivatives acted ascathodic inhibitors in 1 M H2SO4. This was supported by the impedancemeasurements which showed a change in the charge transfer resistance and doublelayer capacitance, indicating adsorption of Benzothiazole derivatives on the mildsteel surface. Atomic absorption spectroscopy studies showed that the inhibitionefficiency increases with increasing inhibitor concentration.

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Synthesis, structural, morphological and optical properties of sol-gelsynthesized Ni doped CuO nanoparticles

L. Valarmathia and J. Jayaprakashb

aDepartment of Physics, Laxminarayana Arts and Science College for Women,Dharmapuri 636 705, Tamil Nadu, IndiabDepartment of Physics, AVS College cf Arts And Science, Salem, Tamil Nadu, India

In this present work, nickel doped copper oxide nanoparticles were effectivelyprepared by simple precipitation method. The applications of Metal oxidenanoparticles contain become gradually more relevant ranging from semiconductor


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to medical health industries. Ni-doped CuO nanoparticles with doping concentrationsranging from 0.5% were prepared by simple precipitation method. The structural,morphological, compositional and optical properties of Ni-doped CuO nanostructurewere analyzed by Fourier transform infrared spectroscopy (FT-IR) Scanning electronmicroscopy (SEM), Energy dispersive analysis of X-rays (EDAX).

Keywords: X-ray diffraction, hydrothermal, NiCl. Nano structured materials, FT-IR,SEM, EDAX.

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Theoretical calculation of higher heating values (HHV) of variouswoody biomass materials based on ultimate analysis data

N.Arumugasamy 1,2, A.N.Seethalasmi1,* and D.Prem Anand3

1Assistant Professor of Physics, The M.D.T. Hindu College, Tirunelveli – 627010.2Research Scholar, St.Xavier’s College, Palayamkottai, Tirunelveli – 627002.3Assistant Professor of Physics, St.Xavier’s College, Palayamkottai, Tirunelveli –627002.*CorrespondingEmail: [email protected], [email protected]

Higher Heating Value (HHV) of biomass is important to analyze and design manybio-energy systems. Many equations have been published for estimating HHV ofdifferent biomass materials. In this paper, a simple equation is developed based onultimate analysis (C, H, O, N and S) which allows calculation of the higher heatingvalues of various woody biomass materials. In order to obtain this equation, 23samples from different sources were analyzed to calculate HHV by using ultimateanalysis data. Deviations from the experimental values fall in most cases below 3%.A comparison is presented with some other equations from the literature based onproximate and ultimate analysis data. The mean differences between the measuredand calculated HHV using this formula developed range from 0.31 to 0.671%. As ageneral conclusion the equation proposed in this paper leads to comparable and inmany cases more accurate predictions of heating values and has the advantage ofbeing applicable to a wide range of woody biomass materials, requiring only asimple, rapid and cheap ultimate analysis of the samples.

Keywords: Biomass; Higher Heating Values (HHV); Ultimate analysis; prediction;correlation.


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Growth and characterization of 4-methyl-3-nitrobenzoic acid(4M3N) single crystal by Bridgman – stockbarger method for NLOapplications

K. Ramachandran*, A. Raja, Muthu Senthil Pandian and P. RamasamySSN Research Centre, SSN College of Engineering, Chennai -603 110, TamilnaduCorresponding Email: [email protected]

Organic, third order nonlinear optical (NLO) 4-methyl-3-nitrobenzoic acid (4M3N)single crystal was successfully grown by Bridgman - Stockbarger method. Thecrystal structure and unit cell parameters of 4M3N single crystal were analysed byusing single crystal X-ray diffraction (SXRD) analysis. The functional groupspresent in the grown 4M3N crystal have been identified by FTIR spectral analysis.4M3N single crystal exhibits high optical transmittance (80 %) in the Visible to nearIR region and the cut-off wavelength is observed at 414 nm. The optical bandgapvalue is calculated from the Tauc plot analysis. The luminescence properties of thegrown crystal were examined from the photoluminescence (PL) spectrum.Mechanical stability of 4M3N single crystal was carried out by Vickersmicrohardness test and it belongs to soft material category. The energy density valueof 4M3N was compared with other standard organic single crystals. The nonlinearrefractive index, nonlinear optical absorption coefficient, third order nonlinearsusceptibility and second order hyperpolarizability values have been calculated fromthe Z-scan experiment. The optimized geometry, polarizability andhyperpolarizability, frontier molecular orbitals (FMO), Mulliken’s charge, naturalbond orbital (NBO) and molecular electrostatic potential (MEP) were investigated.Hirshfeld surface (HS) and 2D finger print plot of 4M3N single crystal weregenerated by using Crystal Explorer 3.1 software and it is deliberated by theintermolecular interaction of the crystal structure.


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Growth, optical and laser damage threshold properties of 4-dimethylaminopyridinium 4-nitrophenolate 4-nitrophenol(DMAPNP) for NLO applications

T. Kamalesh1*, P. Karuppasamy1, Muthu Senthil Pandian1, P. Ramasamy1 andSunil Verma2, 3

1SSN Research Centre, SSN College of Engineering, Chennai-603110, Tamil Nadu.2Laser Materials Development and Devices Division, RRCAT, Indore-452013,Madhya Pradesh.3Homi Bhabha National Institute, Anushakti Nagar, Mumbai-400094, Maharashtra.*CorrespondingEmail:[email protected];[email protected]

The optically transparent organic single crystals of 4-dimethylaminopyridinium 4-nitrophenolate 4-nitrophenol (DMAPNP) were grown by slow evaporation solutiontechnique (SEST) using acetone as a solvent [1-2]. The cell parameters of the growncrystal were analyzed by single crystal X-ray diffraction (SXRD) analysis. Differenttype functional groups were confirmed by FTIR and FT-Raman analysis Opticaltransmittance, band gap and cut-off wavelength of the DMAPNP crystal weredetermined by UV-Vis NIR spectral analysis. The photoconductivity studies revealthat the DMAPNP crystal has negative photoconductivity nature. The thermalstability of the DMAPNP crystal was carried out by thermogravimetric anddifferential thermal analysis (TG-DTA). The laser damage threshold (LDT) wasstudied for the DMAPNP crystal by using Nd: YAG laser (532 nm). The secondharmonic generation (SHG) efficiency of DMAPNP crystal was measured by Kurtz-Perry powder technique.

Graphical Abstract:


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References[1] P. Srinivasan, T. Kanagasekaran, N. Vijayan, G. Bhagavannarayana, R.

Gopalakrishnan and P. Ramasamy Opt. Mater, 30, 553 (2007).[2] C.C. Evans, M. B. Beucher, R. Massse and J. F Nicoud, Chem Mater, 10,

847(1998).

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Growth and characterization of 1H imidazolinium hydrogen L-tartrate NLO single crystal by slow evaporation method

K. Menaka*1,, K. Karnan, R. Kalaivani1 and N. Suryaprabha1

1Department of Physics, K.S.R. College of Arts and Science for Women,Tiruchengode, Namakkal – 637 215, Tamil Nadu.*CorrespondingEmail: [email protected]

In the present work, 1H Imidazalinium hydrogen L-Tartrate NLO single crystal hadgrown in the ratio of 1:1 using water as solvent by slow evaporation method. Further,the prepared sample characterized by using various characterization techniques suchas structural and optical properties were characterized by using X-ray diffraction(XRD), Fourier transform infrared spectroscopy (FTIR) and ultraviolet visiblespectroscopy (UV) techniques. From the XRD analysis, the obtained diffractionpatterns were matched with the monoclinic crystal structure and also their calculatedgrain size was approximately 100 nm. From the FTIR analysis, the bonding natureand various functional groups of the grown crystal were identified. From the UVanalysis, the absorption peak was observed around 250 nm. The large transmittancewindow in the visible enables very good optical transmission of the second harmonicfrequencies of Nd-YAG laser. Hence, it is believed the prepared sample to be usefulfor NLO applications.

Keywords: L-Tartrate single crystal, slow evaporation method and NLO applications


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Influence of 4,4'-bipyridine doped PVDF/KI/I2 solid polymerelectrolytes for dye sensitized solar cell (DSSC) applications

S. Kannadhasan*, M. Senthil Pandian and P. RamasamySSN Research Centre, SSN College of Engineering, Kalavakkam, Chennai-603110,Tamilnadu, India.*CorrespondingEmail: [email protected]: [email protected]

Different weight percentages (0%, 10%, 20%, 30%, 40% and 50%) of 4,4'-bipyridinedoped polyvinylidine fluoride/ potassium iodide/ iodine (PVDF/KI/I2) solid polymerelectrolytes (SPEs) were prepared by solution casting technique using N,N-dimethylformamide (DMF) as solvent. The crystallinity, ionic conductivity, surfacemorphology and photovoltaic performance of (0%, 10%, 20%, 30%, 40% and 50%)4,4′-bipyridine doped PVDF/KI/I2 solid polymer electrolytes were examined. Thepowder X-ray diffraction (PXRD) studies have confirmed the crystallinity of 0%,10%, 20%, 30%, 40% and 50% 4,4′-bipyridine doped PVDF/KI/I2 solid polymerelectrolytes. From the AC-impedance analysis, ionic conductivity of 0%, 10%, 20%,30%, 40% and 50% 4,4′-bipyridine doped PVDF/KI/I2 solid polymer electrolyteswere calculated as 5.40×10-6, 8.74×10-6, 2.26×10-5, 7.77×10-5, 3.13×10-5 and1.12×10-5, respectively. The surface morphology of 0%, 10%, 20%, 30%, 40% and50% 4,4′-bipyridine doped PVDF/KI/I2 solid polymer electrolytes is carried outusing scanning electron microscopy (SEM) analysis. The photovoltaic performanceof 0%, 10%, 20%, 30%, 40% and 50% 4,4′-bipyridine doped PVDF/KI/I2 solidpolymer electrolytes based dye-sensitized solar cells (DSSCs) have achieved 1.9%,2.6%, 2.9%, 3.6%, 3.0% and 2.8% power conversion efficiency (PCE) respectively


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Bulk growth and characterizations of 2-aminopyridinium4-nitrophenolate 4-nitrophenol (2AP4N) single crystals for SHGdevice application

P. Karuppasamy1*, T. Kamalesh1, Sunil Verma2, Muthu Senthil Pandian1 andP. Ramasamy1

1SSN Research Centre, SSN Institutions, Chennai-603110, Tamil Nadu2Laser Materials Development and Devices Division, Raja Ramanna Centre forAdvanced Technology, Indore-452013, Madhya Pradesh*CorrespondingEmail: [email protected]

The bulk size organic single crystal of 2-aminopyridinium 4-nitrophenolate 4-nitrophenol (2AP4N) with the dimensions of 10 mm diameter and 200 mm lengthhas been grown successfully along (001) plane by Sankaranarayanan–Ramasamymethod (SR) within the period of 60 days. Initially the 2AP4N seed crystal wasgrown by slow evaporation solution technique (SEST). The grown crystal wassubjected to single crystal X-ray diffraction (SXRD) measurement and confirms thegrown crystal belongs to orthorhombic crystal system with space group Pna21. Thephase purity was analysed by powder X-ray diffraction (PXRD) measurement andthe obtained planes were indexed using FullProf software. The morphology of thegrown crystal was indexed by WinXmorph software. The functional groups of2AP4N were confirmed by Fourier transform infrared (FTIR) spectral analysis. Theoptical transmittance of the grown crystal was determined by UV-Vis NIR spectrumanalysis and it has good optical transparency in the visible and near IR regions. Theoptical band gap energy of the 2AP4N was also calculated. The load dependentmechanical stability of the grown crystal was analysed by Vickers microhardnesstest. The second harmonic efficiency (SHG) was analysed using Kurtz-Perry powdertechnique with different particle size and it confirms that the grown crystal has phasematchable. The results are discussed in detail.


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Graphical Abstract:

Acknowledgement :

The authors would gratefully acknowledge the DAE-BRNS (Ref. 34/14/06/2016-BRNS/34032) for financial support of this work.

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N-hexylcarbazole substituted triphenylamine donor basedsensitizers for dye sensitized solar cells application - theoreticalinvestigation

P. Pounraj, V. Mohankumar, M. Senthil Pandian and P. Ramasamy*SSN Research Centre, SSN College of Engineering, Kalavakkam, Chennai-603110,Tamilnadu, India*CorrespondingEmail: [email protected]; [email protected]

N-hexylcarbazole substituted triphenylamine donor based dyes are investigatedtheoretically as potential sensitizer for dye sensitized solar cell (DSSC). Thiopheneand cyanovinyl groups are used as π-spacers with different configuration.Cyanoacrylic acid is used as an anchoring group and all the dyes are bi-anchoreddyes. N-hexylcarbazole donor group is substituted in the third para position, leads toD-D-(π-A)2. The eight N-hexylcarbazole donor substituted triphenylamine baseddyes are designed with different π-spacers configuration for the dye in DSSCapplication. The optimized molecular structure, minimum energy, dipole momentand polarizability of the dye structure were computed using Density functionaltheory (DFT). The vertical electron excitation energy, maximum absorptionwavelength, oscillator strength, light harvesting efficiency and free energy changesfor electron injection and dye regeneration of the dyes are predicted by the Time


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Dependent Density Functional Theory (TD-DFT) calculations. Increasing theconjugation length by the addition of π-spacers in the D-D-(π-A)2 dyes resulted innarrow bandgap, higher molar extinction coefficient, red-shift in the absorptionspectra, intramolecular charge transfer and increase in Light Harvesting Efficiency.Also the different π-spacers configuration affects the electronic and optical propertyof the dyes. Hence, this study confirms that N-Hexylcarbazole donor substitutedtriphenylamine compound based dye can be used as a photosensitizer for DSSCapplications.

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Influence of diphenylaminophenyl as donor group on Zn-porphyrinfor dye sensitized solar cell applications

S. Kotteswaran and P. Ramasamy*SSN Research Centre, SSN College of Engineering, Kalavakkam-603110, Chennai,Tamilnadu*CorrespondingEmail: [email protected]

We have designed and synthesized Zn [10,20- (4-carboxyphenyl)Porphyrin] and Zn[5,15-diphenylaminophenyl-10,20- (4-carboxyphenyl)Porphyrin] dyes. The molarextinction coefficient, HOMO and LUMO value of the Zn [5,15-diphenylaminophenyl-10,20- (4-carboxyphenyl)Porphyrin] dye is 1.73 x 105 M-1Cm-

1, -5.82 and -3.35 respectively which is more suitable for DSSC applications thanZn [10,20- (4-carboxyphenyl)Porphyrin] 1.31 x 105 M-1Cm-1, -6.16 and -3.60respectively. The solar cell performance of the Zn [5,15-diphenylaminophenyl-10,20- (4-carboxyphenyl)Porphyrin] based DSSC reached 3.3% efficiency with opencircuit voltage (Voc) of 0.68 V, short circuit photocurrent density (Jsc) of 9.69mA/cm2 and fill factor (ff) of 0.49, Zn [10,20- (4-carboxyphenyl)Porphyrin] basedDSSC reached 1.90% efficiency, open circuit voltage (Voc) of 0.67 V, short circuitphotocurrent density (Jsc) of 5.51 mA/cm2 and fill factor (ff) of 0.54 under AM 1.5 Girradiation. Photo stability of the Zn [5,15-diphenylaminophenyl-10,20- (4-carboxyphenyl)Porphyrin] dye has been analyzed.


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PP – 93

Fabrication of hole-transport-free perovskite solar cells using 5-ammonium valeric acid iodide as additive and carbon as counterelectrode

N. Santhosh, S.R. Sitaaraman, P. Pounraj, R. Govindaraj, M. Senthil Pandian*,and P. RamasamySSN Research Centre, SSN College of Engineering, Kalavakkam-603110, Chennai,Tamilnadu*Corresponding Email: [email protected]; [email protected]

Perovskite solar cell (PSC) was fabricated in ambient atmospheric conditions withcarbon as counter electrode (CE). 5-ammonium valeric acid iodide (5-AVAI) cationwas synthesized and used as an additive in the perovskite precursor. The lightabsorber, perovskite precursor was infiltrated on to the TiO2/ZrO2/Carbon layer andannealed at 60 °C for 30 min. The perovskite layer was characterized by Ultraviolet-visible (UV-Visible) spectroscopy, Photoluminescence (PL) spectroscopy, andoptical microscope analysis. The carbon perovskite solar cell (CPSC) wascharacterized by Photocurrent-Voltage (J-V) measurement and Incident Photon toCurrent Conversion Efficiency (IPCE) measurement. The device power conversionefficiency of the perovskite solar cell was found to be 6.6% with an active area of0.25 cm2. The lifetime of electron injection is found to be 2.5 ms, which is noticedfrom bode plot. From electrochemical impedance spectrum, lower charge transportresistance (Rct) is observed at the interface of perovskite/carbon CE. The shelf-life ofthe device was investigated under ambient condition and its performance remainsover ~90% even after 75 days. This triple layer device architecture shows a hopefulphotovoltaic technology towards commercialization.


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Graphical Abstract:

I-V curve of carbon based perovskite solar cells (CPSC)

PP – 94

Directional growth, physicochemical and quantum chemicalinvestigations on 2-amino-5-nitropyridinium p-phenolsulfonate(2A5NPP) single crystal for nonlinear optical (NLO) applications

V. Sivasubramani, V. Mohankumar, M. Senthil Pandian* and P. RamasamySSN Research Centre, SSN College of Engineering, Kalavakkam-603110, Chennai,Tamilnadu*CorrespondingEmail: [email protected];[email protected]

An efficient organic nonlinear optical (NLO) 2-amino-5-nitropyridinium p-phenolsulfonate (2A5NPP) single crystal was grown by modified Sankaranarayanan-Ramasamy (SR) method in the period of 60 days. The grown crystal has size of 85mm length and 15 mm diameter. The unit cell parameters and morphology of thegrown crystal were deduced by Single crystal X-ray diffraction (SXRD) analysis.The molecular structure and the presence of functional groups were determined byNMR and FTIR spectrum analyses, respectively. The UV-Vis-NIR analysis showsthat the grown crystal possesses good optical transparency (85%) in the visible andNIR region. The chemical etching study reveals that the grown crystal has less etch

0.0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.90

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pit density (EPD). The title compound is thermally stable upto 200 °C. Thephotoconductivity result reveals that the grown crystal possesses positivephotoconductivity in nature and it suggested that the grown crystal can be useful foroptoelectronic device applications. Frequency dependent dielectric constant,dielectric loss and AC conductivity of the grown crystal were analyzed.Photoluminescence spectral study evidences that the grown crystal has strong blueemission. Laser induced damage threshold study was carried out for the growncrystal. The Kurtz-Perry powder second harmonic generation (SHG) test was carriedout for the 2A5NPP crystal and it exhibits 22 times that of standard KDP material.The theoretical calculations were performed using B3LYP/6-311++G (d,p) basis set.The structural parameters of 2A5NPP were studied using DFT method and thecalculated results were compared with experimental values. The charge transfercharacteristic of 2A5NPP compound was studied by frontier molecular orbital(FMOs) analysis. The first-order hyperpolarizability of the present molecule wascalculated and it was found to be 2.9×10-29 e.s.u, which is 37 times higher than thestandard urea molecule. The hydrogen bonding of the title molecule was confirmedby Natural Bond Orbital (NBO) analysis. The above results lead to conclude that thegrown 2A5NPP crystal is a promising candidate for optoelectronic deviceapplications.

References[1] P. N. Prasad, D. J. Williams, Introduction to Nonlinear Optical Effects in

Molecules and Polymers, 1st ed., Wiley, New York, 1991.[2] D. S. Chemla, J. Zyss, Nonlinear Optical Properties of Organic Molecules

and Crystals, 1st ed., Academic Press, London, 1987.[3] Y. Zhang, H. Li, B. Xi, Y. Che and J. Zheng, Mater. Chem. Phys., 2008, 108,

192-195.[4] H. Koshima, M. Hamada, I. Yagi and K. Uosaki, Cryst. Growth Des., 2001,

1, 467-471.[5] G. Anandha Babu, R. Perumal Ramasamy, P. Ramasamy and V. Krishna

Kumar, Cryst. Growth Des., 2009, 9, 3333-3337.


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PP – 95

Synthesis and characterization of organic 2-(Cyano 3-(4-diphenylamino) phenyl) Prop 2-enoic acid dye for electrochemicalcell applications

Kotteswaran Shanmugam, M. Senthil Pandia and P. RamasamySSN Research Centre, SSN College of Engineering, Kalavakkam-603110, Chennai,Tamilnadu*CorrespondingEmail: [email protected]

Phenyl-conjugated Oligoene dye 2-(Cyano 3-(4-diphenylamino) phenyl) prop 2-enoic acid was synthesized by chemical method. The structure of the synthesized dyewas confirmed by 1H NMR and 13C NMR spectrum. From the UV-Visible NIRspectrum the absorption maximum (λmax) was analyzed and from the λmax valuethe molar extinction coefficient was calculated. From the cyclic-voltammograms thedetails about the reversibility of electron transfer processes is obtained. Cathodic andanodic redox potentials were used to determine the HOMO-LUMO values. Thecyclic voltammetry of the dye was taken using Ag/AgCl as reference electrode,glassy carbon as working electrode and platinum (Pt) as counter electrode with thescan rate 100 mVs-1 and the used temperature is 20°C. The DSSC was made usingcommercial P25 TiO2 material as photoanode, 2-cyano 3-(4-diphenylaminophenyl)prop 2-enoic acid dye as sensitizer, I-/I3- as electrolyte and Platinum (Pt) used ascounter electrode. The solar cell efficiency of the synthesized dye is 1.7 % withVoc=0.67 V, Jsc=4.6 mA/m2 and fill factor (FF) =56 %.

PP – 96

Optimization of the high-performance multi-crystalline siliconsolidification process by side heater design-DS system

V. Kesavan, M.Vishnuwaran, M. Srinivasan and P. Ramasamy*SSN Research Centre, SSN College of Engineering, Chennai - 603 110, India.*CorrespondingEmail: [email protected]

A transient global model was used to investigate the heater design furnace in thedirectional solidification (DS) process of multi-crystalline silicon (mc-Si). In this


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present work, we were investigate the effect of side heater design and we wereanalysed thermal stress and dislocation density. The modified side heater design wasused for controlling the von Mises stress, dislocation density and temperaturegradient. Dislocation is one of the major defects that affect the solar cellperformance. For the analysis and optimization of stress-induced dislocation, acomputation tool of CGsim software has been used to investigate thermal stressdistribution during the growth process. The obtained results show that the von Misesstress and temperature gradient are reduced. This work was carried out for the twodifferent side heater design. And also the dislocation density was reduced while (by)using the modified side heater design.

PP – 97

Vibrational, NBO, Fukui function, DOS, thermodynamical andmolecular docking analyses of p-chlorophenacyl bromide usingHartree Fock and B3LYP methods

G. John James1,*, Senthilkumar Chandran2 and M. Arivazhagan1

1Department of Physics, Government Arts College, Tiruchirappalli, Tamilnadu-6200222Department of Physics, Research Centre, SSN College of Engineering, Kalavakkam,Chennai, Tamilnadu-603110*CorrespondingEmail: [email protected]

The molecular structure of p-chlorophenacyl bromide was optimized using DFT/B3LYP and Hartree Fock (HF) functions with 6-311+G(d,p) basis set. The P-CPBbelongs to C1 point group symmetry. The vibrational studies were carried out by FT-IR and FT-Raman and experimental values are compared with theoretical values.The whole vibrational assignments were done on the basis of potential energydistribution. The chemical shifts are computed from NMR analysis by Gauge-including atomic orbital approach. The electronic properties of the p-chlorophenacylbromide were calculated based on the HOMO and LUMO energies. The hyper-conjugative interaction of the P-CPB was analyzed by NBO analysis. The first orderhyperpolarizability of the title molecule was theoretically determined and it showsthat the P-CPB has good NLO behavior. Molecular electrostatic potential shows thehigh positive and negative reactivity site of the molecule. Fukui functions and atomic


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charge are calculated. The electronic band structure of P-CPB was studied bydensity of states. The thermodynamics properties of the title molecule werecomputed in the gas phase. Inhibitory activity of P-CPB was confirmed by moleculardocking analysis.

PP – 98

Review of dye sensitized solar cell

D. Maheswari*1 and D. Sreenivasan2

1Department of Physics, Muthayammal College of Engineering, Rasipuram,Namakkal-637408. Tamil Nadu, India.2Department of Chemical Engineering, Paavai Engineering College, Paachal,Namakkal, TamilNadu - India.*CorrespondingEmail: [email protected]

Dye-sensitized solar cells (DSSCs) have attracted extensive interest as a potentiallylow-cost alternative to conventional solar photoelectroic devices. DSSC structurecomprised of thin layer of metal oxide photoanode, sensitizing dye molecule,electrolyte solution and counter electrode. Thin metal oxide layer having high bandgap energy as well as photoactive to wide visible light spectrum and infra-red region,is used as absorbing medium for dye molecules. Nanocrystalline TiO2 has been themain photoanode material for developing high performance DSSCs due to theinhibition of charge recombination to prolong the carrier lifetime. The mostcommonly used inorganic dye is Ruthenium 2-2’-bipyridene (bpy) based complex.The DSSC consisted of a TiO2 layer deposited on conducting glass plate. This layeris in contact with the dye, which in turn is in contact with the redox electrolytesystem, conventionally a triiodide system. The cell cycle is completed when anelectron is pushed into the dye from the electrolyte. This electron, from the metalorbitals of the dye (S) gets excited by light to a higher energy state. Upon returningto the ground state, a cycle is completed and electricity is generated. The focus ofthis review is on material developments in working photo anode, dye, electrolyte andcounter electrode which enhances the efficiency. In this review we shall focus on thelatest technical advancements in nanocrystalline and electrolyte and sensitizing dyewhich enhances the electron generation.


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Graphical Abstract:


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