29 Sep '15, 2pm

Breakthrough optical rectenna turns light directly into usable electricity

Other forms of renewable energy – like solar and wind – require a rather involved, multi-step process before usable energy is available. The rectenna converts light directly to DC current, without the need for cooling, and could also be used to create electricity from waste heat. The device is composed of tiny carbon nanotubes and rectifiers that capture light, which doesn’t have to be from the sun. The nanotube antennas create an oscillating charge that moves through the rectifier, switching on and off at record high speeds, thereby creating a small electrical current. Billions of rectennas together can generate a more substantial current.

Full article: http://inhabitat.com/breakthrough-optical-rectenna-turns-...

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