"Nanogenerator Powers Up"
Devices that harvest wasted mechanical energy could make many new advances possible—including clothing that recharges personal electronics with body movements, or implants that tap the motion of blood or organs. But making energy-harvesting devices that are compact, flexible, and, above all, efficient remains a big challenge. Now researchers at Georgia Tech have made the first nanowire-based generators that can harvest sufficient mechanical energy to power small devices, including light-emitting diodes and a liquid-crystal display... In a paper published online last week in the journal Nano Letters, [Zhong Lin] Wang's group describes using a nanogenerator containing more nanowires, over a larger area, to drive a small liquid crystal display.