What is Nano
Nano is a prefix of a Greek word representing one-billionth of something. Nanometer means one billionth of a meter that corresponds to 1/50,000 of the diameter of a human hair. It is 10 times bigger than the diameter of a hydrogen atom, and 1000 times less than a μm (micrometer), which is widely used in the semi-conductor manufacturing process.

Examples of Nanometer
The ratio of a regular human height to 30 nm particle is around the ratio of our globe to a normal soccer ball.
It is like comparing our earth with a soccer ball, so you can imagine how tiny a nanometer is.

Incredible Features after Nano Process
Nano technology is to shrink materials to the nano scales and make good use of its physical, chemical and biological properties to develop superior material, engineering process and systematic products which no present micro particles will be able to achieve (in terms of anti-bacteria and protection applications)