nanotech

NANOTECHNOLOGY

The engineering of functional systems at the molecular scale.

Richard Feynman

Father of Nanotechnology

Zero Dimensional

These nanoparticles are spherical in size and the diameter of

these particles will be in the 1-50 nm range.

One Dimensional

These materials are long (several micrometers in length) but with

a diameter of only a few nanometres.

Two Dimensional

:These include different kinds of Nano films such as coatings and

thin-film-multilayers, Nano sheets or Nano-walls. The area of the

Nano films can be large (several square micrometer),

but the thickness is always in Nano scale range

Three Dimensional

These include bulk materials composed of the individual blocks

which are in the nanometre scale (1- 100nm).

Top-down

Etching a block of material down to the desired shape

Bottom-up

Building materials atom by atom - like lego