The science of the miniature- nanotechnology, though a relatively new field is fast emerging as the 'favorite of all' kind of technological arena due to its application in almost every field, from medicine to fabrics. 'Nano' in Greek means dwarf and material, when reduced to Nano dimension (10-9metre =1namometre) shows drastic changes in Physical, Chemical, magnetic, optical, mechanical and electrical properties. This promises exiting applications in bio science, medical science, environment, electronics, cosmetics, security and variety of other fields.
Everything on this earth is made up of atoms, which are the smallest particles. The properties of everything are determined by the arrangement of the atoms. Thus, if atoms in coal are rearranged, we can get diamond. At present, though scientists are able to move molecules and atoms in a mass yet they are still not able to precisely manipulate them. But in future, nanotechnology will allow as redesign easily and create what we want exactly. Further, Nano materials would be very light, strong, transparent, and totally different from bulk material because they are a thousand times smaller than the diameter of human hair, which is around 60 microns.