ABCs of Nano – a big picture of nanoscience, nanotechnology and nanoengineering Dawen Li, Shoieb...
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Transcript of ABCs of Nano – a big picture of nanoscience, nanotechnology and nanoengineering Dawen Li, Shoieb...
![Page 1: ABCs of Nano – a big picture of nanoscience, nanotechnology and nanoengineering Dawen Li, Shoieb Shaik, Scott Wehby June 22, 2015.](https://reader034.fdocuments.us/reader034/viewer/2022050714/56649edc5503460f94bed4cf/html5/thumbnails/1.jpg)
ABCs of Nano– a big picture of nanoscience,
nanotechnology and
nanoengineering
Dawen Li,
Shoieb Shaik,
Scott Wehby
June 22, 2015
![Page 2: ABCs of Nano – a big picture of nanoscience, nanotechnology and nanoengineering Dawen Li, Shoieb Shaik, Scott Wehby June 22, 2015.](https://reader034.fdocuments.us/reader034/viewer/2022050714/56649edc5503460f94bed4cf/html5/thumbnails/2.jpg)
Is It Small Enough?
![Page 3: ABCs of Nano – a big picture of nanoscience, nanotechnology and nanoengineering Dawen Li, Shoieb Shaik, Scott Wehby June 22, 2015.](https://reader034.fdocuments.us/reader034/viewer/2022050714/56649edc5503460f94bed4cf/html5/thumbnails/3.jpg)
Magic Nanoscale (1 to 100nm)
Why nanoscale?
• Novel material properties and phenomena only observed in the nanoscale world.
• Impact our daily life in all areas, such as healthcare, environment, food, and energy.
![Page 4: ABCs of Nano – a big picture of nanoscience, nanotechnology and nanoengineering Dawen Li, Shoieb Shaik, Scott Wehby June 22, 2015.](https://reader034.fdocuments.us/reader034/viewer/2022050714/56649edc5503460f94bed4cf/html5/thumbnails/4.jpg)
How Small Nano Is?
![Page 5: ABCs of Nano – a big picture of nanoscience, nanotechnology and nanoengineering Dawen Li, Shoieb Shaik, Scott Wehby June 22, 2015.](https://reader034.fdocuments.us/reader034/viewer/2022050714/56649edc5503460f94bed4cf/html5/thumbnails/5.jpg)
Nanoscience, Nanotechnology, and Nanoengineering
![Page 6: ABCs of Nano – a big picture of nanoscience, nanotechnology and nanoengineering Dawen Li, Shoieb Shaik, Scott Wehby June 22, 2015.](https://reader034.fdocuments.us/reader034/viewer/2022050714/56649edc5503460f94bed4cf/html5/thumbnails/6.jpg)
Increase of Surface Area by Cutting
![Page 7: ABCs of Nano – a big picture of nanoscience, nanotechnology and nanoengineering Dawen Li, Shoieb Shaik, Scott Wehby June 22, 2015.](https://reader034.fdocuments.us/reader034/viewer/2022050714/56649edc5503460f94bed4cf/html5/thumbnails/7.jpg)
Surface Area to Volume Ratio
26lS
3lV
lVS 6
![Page 8: ABCs of Nano – a big picture of nanoscience, nanotechnology and nanoengineering Dawen Li, Shoieb Shaik, Scott Wehby June 22, 2015.](https://reader034.fdocuments.us/reader034/viewer/2022050714/56649edc5503460f94bed4cf/html5/thumbnails/8.jpg)
Percentage of Surface Atoms (3D)
![Page 9: ABCs of Nano – a big picture of nanoscience, nanotechnology and nanoengineering Dawen Li, Shoieb Shaik, Scott Wehby June 22, 2015.](https://reader034.fdocuments.us/reader034/viewer/2022050714/56649edc5503460f94bed4cf/html5/thumbnails/9.jpg)
Nanoengineering with Surface Effect
![Page 10: ABCs of Nano – a big picture of nanoscience, nanotechnology and nanoengineering Dawen Li, Shoieb Shaik, Scott Wehby June 22, 2015.](https://reader034.fdocuments.us/reader034/viewer/2022050714/56649edc5503460f94bed4cf/html5/thumbnails/10.jpg)
Nanoparticle Size/Shape versus Color
![Page 11: ABCs of Nano – a big picture of nanoscience, nanotechnology and nanoengineering Dawen Li, Shoieb Shaik, Scott Wehby June 22, 2015.](https://reader034.fdocuments.us/reader034/viewer/2022050714/56649edc5503460f94bed4cf/html5/thumbnails/11.jpg)
Interaction at Nanoscale
• At macroscale, gravitational force is usually dominant.
• At nanoscale, atomic force, particularly electrical forces are generally governing.
![Page 12: ABCs of Nano – a big picture of nanoscience, nanotechnology and nanoengineering Dawen Li, Shoieb Shaik, Scott Wehby June 22, 2015.](https://reader034.fdocuments.us/reader034/viewer/2022050714/56649edc5503460f94bed4cf/html5/thumbnails/12.jpg)
Atomic Force for Imaging
Forces (van der Waals) between tip and surface depends on the tip height
![Page 13: ABCs of Nano – a big picture of nanoscience, nanotechnology and nanoengineering Dawen Li, Shoieb Shaik, Scott Wehby June 22, 2015.](https://reader034.fdocuments.us/reader034/viewer/2022050714/56649edc5503460f94bed4cf/html5/thumbnails/13.jpg)
Organized Structure from Self-Assembly
![Page 14: ABCs of Nano – a big picture of nanoscience, nanotechnology and nanoengineering Dawen Li, Shoieb Shaik, Scott Wehby June 22, 2015.](https://reader034.fdocuments.us/reader034/viewer/2022050714/56649edc5503460f94bed4cf/html5/thumbnails/14.jpg)
Electron Beam for Nanofabrication
![Page 15: ABCs of Nano – a big picture of nanoscience, nanotechnology and nanoengineering Dawen Li, Shoieb Shaik, Scott Wehby June 22, 2015.](https://reader034.fdocuments.us/reader034/viewer/2022050714/56649edc5503460f94bed4cf/html5/thumbnails/15.jpg)
Electron Beam for Imaging
![Page 16: ABCs of Nano – a big picture of nanoscience, nanotechnology and nanoengineering Dawen Li, Shoieb Shaik, Scott Wehby June 22, 2015.](https://reader034.fdocuments.us/reader034/viewer/2022050714/56649edc5503460f94bed4cf/html5/thumbnails/16.jpg)
Element Identification
![Page 17: ABCs of Nano – a big picture of nanoscience, nanotechnology and nanoengineering Dawen Li, Shoieb Shaik, Scott Wehby June 22, 2015.](https://reader034.fdocuments.us/reader034/viewer/2022050714/56649edc5503460f94bed4cf/html5/thumbnails/17.jpg)
Have Fun with Nano Products
Nonstick umbrella,
stain-free coating !
Strong adhesion tape !
Strong automobile
tires from
rubber/carbon
nanotube composite!
![Page 18: ABCs of Nano – a big picture of nanoscience, nanotechnology and nanoengineering Dawen Li, Shoieb Shaik, Scott Wehby June 22, 2015.](https://reader034.fdocuments.us/reader034/viewer/2022050714/56649edc5503460f94bed4cf/html5/thumbnails/18.jpg)
Review Questions
How small is small? What is the nanometer size?
Why Nano is a magic scale?
In your words describe the difference between nanoscience, nanotechnology, and nanoengineering.
What is the size effects in terms of surface to volume ratio and quantum confinement of nanoparticles?
Give some examples for application of nanopowders?
Can self-assembly happens at macroscale?
What tools can be used for nanofabrication and imaging?
List a few nano-products related to our daily life?
![Page 19: ABCs of Nano – a big picture of nanoscience, nanotechnology and nanoengineering Dawen Li, Shoieb Shaik, Scott Wehby June 22, 2015.](https://reader034.fdocuments.us/reader034/viewer/2022050714/56649edc5503460f94bed4cf/html5/thumbnails/19.jpg)