Nanotechnology
he manufacturing or engineering of functional systems at molecular level or nanoscale can be termed as nanotechnology. The word ‘nano’ has been coined to mean 10-9 or simply one billionth size. Special types of microscopes, scanning probe microscopes, are able to view particles the size of a nanometer. In another definition, nanotechnology is the engineering of machines from molecules the size of a few nanometers. These machines can be motors, robots and computers taking up the size...