nanoscale science and engineering

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!!!

micrometer(One-millionth of a

meter)

6-8 µm

These are smaller than you can see.

Viruses3-50 nm

DNA2.5 nm

Atoms<1 nm

A nanometer is one billionth of a meter!!

NANO

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.

Nanotechnology

Nano in Nature

“Nano” all around us

Apparel with silver nanoparticles

Tata Nano

Baby gear

Things are different . . .

Size really does matter!

Bulk

Nano

Bulk

Nano

Nanoparticles interact differently with light.

Things are different . . .

Size really does matter!

Depiction of a forest glass shop from Sir John Mandeville's Travels, Dated 1420 – 1450. British Library, London

Nanotechnology in the Middle Ages

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

Carbon Nanotube

Diamond

Coal

Graphite

But what about the risks?

Think Like a Nano Scientist!

This project was supported by the National Science Foundation, NISE Net and OMSI.

Thank you!

1. A red blood cell is found on the nanoscale.

2. DNA is found on the nanoscale.

True or False?

TRUE!

FALSE!

2. Nanotechnology can effect the way we move and produce energy.

1. Things on the nanoscale can be found all around us in nature.

True or False?

TRUE!

TRUE!