Definition of quantum wire: If the two dimension of the material are reduced to nano range while the third dimension remains large, then the material or structure is called quantum wire. Quantum well is also called nanolayers.

Preparation of quantum wire:

In nanotechnology, these wires can be prepared by:

a)      direct growth of the wires by etching process.

b)      Wires can also be made from carbon nanotubes.

Properties of quantum wires:

Quantum wires are light weight, high electrical conductivity, small diameter, low chemical reactivity and high tensile strength.