Nanoscale
Science
and Engineering
What is Nanoscale Science
and Engineering?
Engineering at the
nanoscale is called
Nanotechnology!
How small is a nanometer?
MACRO
meter
centimeter
millimeter
All these are still visible
with your eyes.
MICRO
Nanoscale objects are
1,000 times smaller!!!
6-8 µm
micrometer
(One-millionth of a meter)
These are smaller than
you can see.
NANO
A nanometer is one billionth of a meter!!
DNA
2.5 nm
Viruses
3-50 nm
Atoms
<1 nm
Nanotechnology
1.
The nanometer is extremely small.
2.
At the nanometer scale, many materials
behave differently.
3.
We can use this new behavior to make new
technologies.
Nano in Nature
“Nano” all around us
Tata Nano
Apparel with silver
nanoparticles
Baby gear
Things are different . . .
Size really does matter!
Bulk
Nano
Things are different . . .
Size really does matter!
Bulk
Nano
Nanoparticles interact differently with light.
Nanotechnology in the Middle Ages
Depiction of a forest glass shop from Sir John Mandeville's
Travels, Dated 1420 – 1450. British Library, London
Why Do We Care?
Nanotechnology can improve how we live!
Silver nanoparticles are used to kill bacteria in:
•Athletic apparel
•Socks
•Refrigerators
•Storage containers
•Washing machines
Gold nanoshells can target and destroy cancer cells
60-100 nm
“Printing” Nano-solar Panels
Cities could be Power Plants!
Carbon Nanotube
Energy Transportation
Carbon Atoms Rearranged
Coal
Diamond
Graphite
Carbon
Nanotube
But what about the risks?
Think Like a Nano Scientist!
Thank you!
This project was supported by the National
Science Foundation, NISE Net and OMSI.
True or False?
1. A red blood cell is
found on the nanoscale.
FALSE!
2. DNA is found on the
nanoscale.
TRUE!
True or False?
1. Things on the nanoscale
can be found all around
us in nature.
TRUE!
2. Nanotechnology can
effect the way we move
and produce energy.
TRUE!