Nano Power

Nanotechnology means development of really small devices which can be used in different applications but as sophisticated as these devices are, they are still burdened because they relay on an outside power. Providing power for nanometer-scale devices has long been a challenge. The size of the entire device is determined by the size of the power source. Batteries and other traditional sources are too large, and tend to negate the size advantages of nanodevices. Batteries being used at present require toxic chemicals and have to be replaced periodically.