Nanoscience is the study of atoms and molecular structures whose size, at least in one dimension is between 1-100 nm. Nanotechnology is the design and fabrication of devices using such nanostructures. Nanomaterials exhibit properties strikingly different from those of bulk materials. Both surface effects and size effects plays crucial role in the properties of nanomaterials. The state of matter around nanosize is referred to as mesoscopic state. The physics of nanotechnology is also called as mesoscopic physics. Fullerenes, carbon nanotubes and nanowires are examples of inorganic nanomaterials. Each fullerene molecule comprises of sixty carbon atoms arranged in globular shape. Nanowires are arrangements in one direction made of silicon, zinc oxide and various metals. Artificially synthesized DNA strands are examples of organic nanomaterials.
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