Chapter 6:Textiles & Production Chapter 6.1: Textiles & Fashion Chapter 6.2: Making Textiles.
A vision on smart textiles: SYSTEX -...
Transcript of A vision on smart textiles: SYSTEX -...
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Smart Textiles meet Organic Electronics
A vision on smart textiles: SYSTEX
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Smart Textiles meet Organic Electronics
Commercialization Cluster of Organic and Large Area Electronics
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Smart Textiles meet Organic Electronics
Programme9.00 Registration9.15 “Introduciton to smart textiles” (Carla Hertleer, UGent,B)10.30 “TriTex e-learning course” (Cédric Cochrane, ENSAIT, F)10.45 Coffee Break11.00 “Stretchable electronics for smart textiles” (Jan Vanfleteren, CMST, Imec,B)12.00 Sandwich lunch13.15 “Conjugated polymers: Versatile conductorsd and semi-conductors
for electronic applications” (Dirk Vanderzande, Uhasselt, Imec, B)14.45 Coffee break15.00 Discussion round16.30 Closing
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Smart Textiles meet Organic Electronics
Why smart textiles?
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Smart Textiles meet Organic Electronics
A wearable smart textile system comprises
• Sensors• Actuators• Data processing unit• Communication system• Energy supply• Interconnections
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Smart Textiles meet Organic Electronics
e-textiles
Smart textiles
Intelligent textiles
Interactive clothing
Wearable electronics
Embedded electronics
Wearable textile systems
Smart suitSFITSmart Fabrics Interactive Textiles
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Smart Textiles meet Organic Electronics
A combination of materials and processes
Materials ProcessesConductive SpinningOptical WeavingChromic KnittingShape memory EmbroideryPiezo LaminatingPhase change Others
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Smart Textiles meet Organic Electronics
Functional materials
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Smart Textiles meet Organic Electronics
Smart use of passive materials
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Smart Textiles meet Organic Electronics
Conductive materials
• carbon, metal, polymers• conductive, semiconductive, dielectric properties
Kevlar coatedwith polypyrrol copper gold
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Smart Textiles meet Organic Electronics
Deposition of polypyrrole
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Smart Textiles meet Organic Electronics
Electroless deposition of copper
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Smart Textiles meet Organic Electronics
Deposition of gold: exchange with copper
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Smart Textiles meet Organic Electronics
• Conductivity• Conductivity that changes with fibre
expansion:• Deformation• Swelling
Adding conductive nanoparticles
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Smart Textiles meet Organic Electronics
Obtaining elastic conductivity
Yarn levelFabric level: Knitting, special weavingStretchable electronics
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Smart Textiles meet Organic Electronics
Smart yarns: elastic, conductive (A. Schwarz)
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Smart Textiles meet Organic Electronics
Hollow spindle process
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Smart Textiles meet Organic Electronics
Printing with conductive inks on textiles(I. Kazani)
• Digital or screen• Homogeneity• Accuracy of paths• Washing• Deformation• Adhesion
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Smart Textiles meet Organic Electronics
Conductive inks on textiles
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Smart Textiles meet Organic Electronics
Decline due to washing
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Smart Textiles meet Organic Electronics
Connections Antenna
Power supply Heating
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Smart Textiles meet Organic Electronics
Incompatibility of materials
ε=0
ε=6.0 %
0
5
10
15
20
25
30
0 0.2 0.4 0.6
strain
(R-R
o)/R
ofrom experiment
from change in dimension
PU with knitted fabric withcopper coating stainless steel yarns
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Smart Textiles meet Organic Electronics
Sensors
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Smart Textiles meet Organic Electronics
Body Environment Textile itselfbiopotential temperature temperature
temperature movements wetness
respiration biological stretch
movements chemical wear
position EM/ES fields abrasion
sweat water/moisture
odour radiation
electrical position
chemical pressure
biological sound
pressure
acoustic
skin properties
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Smart Textiles meet Organic Electronics
Knitted electroconductive yarns as sensor
Textrodes Respibelt
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Smart Textiles meet Organic Electronics
Woven pressure sensor, capacity based
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Smart Textiles meet Organic Electronics
Complex textile structurescan add functionality
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Smart Textiles meet Organic Electronics
Smart fabrics: knitting
• Electrodes forelectrostimulation
• Connection electrodes-contacts
• Textile compatible contacts
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Smart Textiles meet Organic Electronics
Contactlesssensor EMG
Electrodeelectrostimulation
Textrodes
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Smart Textiles meet Organic Electronics
Actuators
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Smart Textiles meet Organic Electronics
Actuators
Mechanical shape memory materials, pH- and thermo-responsive polymers, electro-active polymers
Chemical micro/nano capsules, cyclodextrines, gel based systems Thermal phase change materials, electroconductive fibres,
Peltier textiles Optical electrochromic materials, (in)organic LED (OLED) Acoustic piezo electric materials Electrical electrostimulation
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Smart Textiles meet Organic Electronics
OLED
Textile structureOrganic materialsImage qualityYield still lowOxidation
TITV
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Smart Textiles meet Organic Electronics
Energy supply
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Smart Textiles meet Organic Electronics
Energy classification
Generation: ‣ Thermal: Seebeck textiles, Peltier elements,‣ Kinetic: piezo electric fibres, ‣ Radiation: photovoltaic fibres,‣ Magnetic,‣ Chemical: batteries,‣ Fuel cells.
Storage: electrochemical (flexible batteries), electrical (super capacitor fibres)
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Smart Textiles meet Organic Electronics
A flexible battery
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Smart Textiles meet Organic Electronics
Flexible photovaltaics in garments
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Smart Textiles meet Organic Electronics
Photovoltaics: Dephotex
OrganicphotovoltaicsNanostructuresDyestuffsChallenges:•Materials•Production•Stability•Concept
Transparent layer/ Electrode
N semiconductor
P semiconductor
Electrode
+ -+ -
+ -
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Smart Textiles meet Organic Electronics
Energy from motion: piezo electrics
Deformation leads to E fieldNeeds large surface, no thicknessPVDFChallenges:•Materials•Concepts•Production (poling) Electrode
Piezo electric layerElectrode
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Smart Textiles meet Organic Electronics
Energy from heat: Seebeck effect
Materials:•P semiconductor•N semiconductor•Conductive materials
Infineon demonstrator
Areas of cooling
Areas of heating
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Smart Textiles meet Organic Electronics
Communication
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Smart Textiles meet Organic Electronics
Communication
Wired-wirelessShort-long distanceVisual-Auditive-Tactile
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Smart Textiles meet Organic Electronics
Into clothing
Into protective clothing
A selection of the prototypes for integration
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Smart Textiles meet Organic Electronics
Data processing
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Smart Textiles meet Organic Electronics
Electronics are required
- rigid PCBs- flexible PCBs- stretchable PCBs- textile electronics
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Smart Textiles meet Organic Electronics
MICAS van KULeuven CSEM voor Proetex Fraunhofer, Berlin
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Smart Textiles meet Organic Electronics
Textile electronics through weaving (Sefar)
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Smart Textiles meet Organic Electronics
Fibre transistor (L. Rambausek)
Conductive core: gateInsulating coatingSemiconductor coatingElectrode: source
Electrode: drain
SemiconductorSource Insulator
GateDrain
OFET: organicfield effect transistor
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Smart Textiles meet Organic Electronics
Fibre OFET production
• Dip coating• thin layer• controlled crystallinity• homogeneous coating
• Vapour deposition• Controlled distance of electrodes
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Smart Textiles meet Organic Electronics
OFET stability
• Characteristics change• Pressure• BendingSensor
• Oxydation of semi conductor
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Smart Textiles meet Organic Electronics
OFET textile integration
Weaving structureRight patternsRight contactsNo falso contactsStable contacts
100µm
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Smart Textiles meet Organic Electronics
Interconnections
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Smart Textiles meet Organic Electronics
Embroidery
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Smart Textiles meet Organic Electronics
Contacts (T. Linz)
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Smart Textiles meet Organic Electronics
Standardisation of smart textiles
TC 248 WG 31 definitions and framework of regulationsStandards electronics: • no deformation, moisture, temperature• manipulation of materials (clamping, deformation, …)Textiles: no electronics
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Smart Textiles meet Organic Electronics
Conclusions
• Enormous possibilities• Choice of materials, concepts, structures,
production technologies• Application oriented