Introduction
Nanotechnology is the field of science in which matter is manipulated at very small scales usually of atomic and molecular level to achieve desired properties. The common range of sizes are between 1 and 100 nanometers for the devices, tools and other materials, which come under the domain of nanotechnology. For standardization purposes, this size is measured in one dimension only which is usually the larger one. One nanometer is as small as one billionth of a meter or simply 10-9 meter. At such smaller scales the effects of Quantum mechanics play vital role in determining the properties of ...