What is nanotech?Nanotechnology : Art and sience of manipulating atoms and moleculs to create new systems, materials and devices.
Nanotechnology is the engineering of functional systems at the molecular scale.
Size mattersHow big is nano? Nano = 100.000 xs smallr than the diameter of human eye
Examples of Nanoscale: A cubic micron of water contains about 90 billions of atoms. 1 millimeter has 1000 micronMicron is a thousand times larger than nano
Nanotechnology is a group of emerging technologies in which the structure of matter is controlled at the nanometer scale, the scale of small numbers of atoms, to produce novel materials and devices that have useful and unique properties.
General purpose technology
Imagine a medical device that travels through the human body to seek out and destroy small clusters of cancerous cells before they can spread. Or a box no larger than a sugar cube that contains the entire contents of the Library of Congress. Or materials much lighter than steel that possess ten times as much strength. U.S. National Science Foundation
Multi use technology
Benefits of nanotech
Benefits: - water - computers - electrical power - solar power - medicine
Risks of nanotechnology
Risks: - monopoly - high price of products - criminal and terrorism - nanotech weapons
Some important questions
Who will own the technology?Will it be heavily restricted, or widely available?What will it do to the gap between rich and poor?
How can dangerous weapons be controlled, and dangerous arms races be prevented?