Jacquelynn Garofano CRISP CENTER FOR RESEARCH ON INTERFACE STRUCTURES & PHENOMENA NSF Materials...
-
Upload
ira-merritt -
Category
Documents
-
view
217 -
download
4
Transcript of Jacquelynn Garofano CRISP CENTER FOR RESEARCH ON INTERFACE STRUCTURES & PHENOMENA NSF Materials...
![Page 1: Jacquelynn Garofano CRISP CENTER FOR RESEARCH ON INTERFACE STRUCTURES & PHENOMENA NSF Materials Research Science and Engineering Center.](https://reader035.fdocuments.net/reader035/viewer/2022070408/56649e575503460f94b5056c/html5/thumbnails/1.jpg)
Jacquelynn Garofano • CRISPwww.crisp.yale.edu
CENTER FOR RESEARCH ON INTERFACE STRUCTURES & PHENOMENANSF Materials Research Science and Engineering Center
April 01, 2011 • Three Rivers Community College
materials sciencethe hybrid science
chem • physics • bio • nano
wings, feathers, bubbles, thin films … what do these things have in common?
![Page 2: Jacquelynn Garofano CRISP CENTER FOR RESEARCH ON INTERFACE STRUCTURES & PHENOMENA NSF Materials Research Science and Engineering Center.](https://reader035.fdocuments.net/reader035/viewer/2022070408/56649e575503460f94b5056c/html5/thumbnails/2.jpg)
Materials Science
2
structure • properties • characterizationprocessing • performance
Jr Laser Camp• Three Rivers Community College • April 01, 2011
![Page 3: Jacquelynn Garofano CRISP CENTER FOR RESEARCH ON INTERFACE STRUCTURES & PHENOMENA NSF Materials Research Science and Engineering Center.](https://reader035.fdocuments.net/reader035/viewer/2022070408/56649e575503460f94b5056c/html5/thumbnails/3.jpg)
MAKING STUFF SeriesEach episode focuses on a current, overarching
aspect of materials science research
www.pbs.org/wgbh/nova/tech/making-stuff.html
Jan 19 Jan 26 Feb 02 Feb 09
STRONGER SMALLER CLEANER SMARTER
3Jr Laser Camp• Three Rivers Community College • April 01, 2011
![Page 4: Jacquelynn Garofano CRISP CENTER FOR RESEARCH ON INTERFACE STRUCTURES & PHENOMENA NSF Materials Research Science and Engineering Center.](https://reader035.fdocuments.net/reader035/viewer/2022070408/56649e575503460f94b5056c/html5/thumbnails/4.jpg)
Let’s get some perspective
The scale of things …
4Jr Laser Camp• Three Rivers Community College • April 01, 2011
![Page 5: Jacquelynn Garofano CRISP CENTER FOR RESEARCH ON INTERFACE STRUCTURES & PHENOMENA NSF Materials Research Science and Engineering Center.](https://reader035.fdocuments.net/reader035/viewer/2022070408/56649e575503460f94b5056c/html5/thumbnails/5.jpg)
Macroscale [100 to 10-3 m]
Meter [1 m = 100 m]
Centimeter [1 cm = 10-2 m] Millimeter [1 mm = 10-3 m]
5Jr Laser Camp• Three Rivers Community College • April 01, 2011
![Page 6: Jacquelynn Garofano CRISP CENTER FOR RESEARCH ON INTERFACE STRUCTURES & PHENOMENA NSF Materials Research Science and Engineering Center.](https://reader035.fdocuments.net/reader035/viewer/2022070408/56649e575503460f94b5056c/html5/thumbnails/6.jpg)
Microscale [1 μm = 10-6 m]
1 μm = one-millionth of a meter
Human hair 50 – 80 μm Red blood cells < 8 μm
6Jr Laser Camp• Three Rivers Community College • April 01, 2011
![Page 7: Jacquelynn Garofano CRISP CENTER FOR RESEARCH ON INTERFACE STRUCTURES & PHENOMENA NSF Materials Research Science and Engineering Center.](https://reader035.fdocuments.net/reader035/viewer/2022070408/56649e575503460f94b5056c/html5/thumbnails/7.jpg)
Nanoscale [1 nm = 10-9 m]
1 nm = one-billionth of a meter
Virus < 50 nm DNA = 2.5 nm thick
7Jr Laser Camp• Three Rivers Community College • April 01, 2011
![Page 8: Jacquelynn Garofano CRISP CENTER FOR RESEARCH ON INTERFACE STRUCTURES & PHENOMENA NSF Materials Research Science and Engineering Center.](https://reader035.fdocuments.net/reader035/viewer/2022070408/56649e575503460f94b5056c/html5/thumbnails/8.jpg)
Angstrom [1 Å = 10-10 m]
Atom = 0.1 – 0.3 nm
1 Å = 0.1 nm = one ten-billionth of a meter
AFM image: 48 iron (Fe) atoms in a circle onto the surface of gold (Au)
8Jr Laser Camp• Three Rivers Community College • April 01, 2011
![Page 9: Jacquelynn Garofano CRISP CENTER FOR RESEARCH ON INTERFACE STRUCTURES & PHENOMENA NSF Materials Research Science and Engineering Center.](https://reader035.fdocuments.net/reader035/viewer/2022070408/56649e575503460f94b5056c/html5/thumbnails/9.jpg)
Nanoscale Properties
What’s unique about material properties the nanoscale?
99
The structure at nanoscale gives rise to properties, i.e. macroscale behavior
Jr Laser Camp• Three Rivers Community College • April 01, 2011
![Page 10: Jacquelynn Garofano CRISP CENTER FOR RESEARCH ON INTERFACE STRUCTURES & PHENOMENA NSF Materials Research Science and Engineering Center.](https://reader035.fdocuments.net/reader035/viewer/2022070408/56649e575503460f94b5056c/html5/thumbnails/10.jpg)
Iridescence
10
The wings are made up of tiny scales that are comprised of even smaller ridges that causes interference of light.
Although the shell is only a few mm thick, it’s made of ~15,000+ layers of nm thin plates of mineral.
Abalone shellBlue morpho
Jr Laser Camp• Three Rivers Community College • April 01, 2011
![Page 11: Jacquelynn Garofano CRISP CENTER FOR RESEARCH ON INTERFACE STRUCTURES & PHENOMENA NSF Materials Research Science and Engineering Center.](https://reader035.fdocuments.net/reader035/viewer/2022070408/56649e575503460f94b5056c/html5/thumbnails/11.jpg)
Pigment v Nanostructure
Jr Laser Camp• Three Rivers Community College • April 01, 2011
![Page 12: Jacquelynn Garofano CRISP CENTER FOR RESEARCH ON INTERFACE STRUCTURES & PHENOMENA NSF Materials Research Science and Engineering Center.](https://reader035.fdocuments.net/reader035/viewer/2022070408/56649e575503460f94b5056c/html5/thumbnails/12.jpg)
Peacock feathers
Is the color due to pigment or structure?
Jr Laser Camp• Three Rivers Community College • April 01, 2011
How can we tell?
![Page 13: Jacquelynn Garofano CRISP CENTER FOR RESEARCH ON INTERFACE STRUCTURES & PHENOMENA NSF Materials Research Science and Engineering Center.](https://reader035.fdocuments.net/reader035/viewer/2022070408/56649e575503460f94b5056c/html5/thumbnails/13.jpg)
Thin films
• The nanostructures of iridescent feathers, shells, and wings are within the UV size range (400 – 700 nm); as are thin films.
Jr Laser Camp• Three Rivers Community College • April 01, 2011
![Page 14: Jacquelynn Garofano CRISP CENTER FOR RESEARCH ON INTERFACE STRUCTURES & PHENOMENA NSF Materials Research Science and Engineering Center.](https://reader035.fdocuments.net/reader035/viewer/2022070408/56649e575503460f94b5056c/html5/thumbnails/14.jpg)
Soap bubbles
Jr Laser Camp• Three Rivers Community College • April 01, 2011
Iridescent colors are observed due to interference of light rays; thickness
![Page 15: Jacquelynn Garofano CRISP CENTER FOR RESEARCH ON INTERFACE STRUCTURES & PHENOMENA NSF Materials Research Science and Engineering Center.](https://reader035.fdocuments.net/reader035/viewer/2022070408/56649e575503460f94b5056c/html5/thumbnails/15.jpg)
Optical interference
CONSTRUCTIVE interference DESTRUCTIVE interference
Jr Laser Camp• Three Rivers Community College • April 01, 2011
Thin film interference is CONSTRUCTIVE
![Page 16: Jacquelynn Garofano CRISP CENTER FOR RESEARCH ON INTERFACE STRUCTURES & PHENOMENA NSF Materials Research Science and Engineering Center.](https://reader035.fdocuments.net/reader035/viewer/2022070408/56649e575503460f94b5056c/html5/thumbnails/16.jpg)
Bulk to thin film
16
thin films deposited on flexible (polymer) sheets is advantageous for artichitural design
Jr Laser Camp• Three Rivers Community College • April 01, 2011
![Page 17: Jacquelynn Garofano CRISP CENTER FOR RESEARCH ON INTERFACE STRUCTURES & PHENOMENA NSF Materials Research Science and Engineering Center.](https://reader035.fdocuments.net/reader035/viewer/2022070408/56649e575503460f94b5056c/html5/thumbnails/17.jpg)
Take Aways
• The way a material behaves on the macroscale is affected by its structure on the nanoscale
• The thin film reflects light differently depending on how thick it is, so you see different colors
• Scientists and engineers are trying to make new materials/devices with new technologies
Jr Laser Camp• Three Rivers Community College • April 01, 2011