Tuesday, June 7, 2011

Talk and Charge

Scientists at Sungkyunkwan University in Seoul, South Korea think they've developed the technology that could charge your cell phone battery by the sound of your voice and the length of your phone conversations. The technology produces energy from the vibrations caused by sounds.  The prototype consists of tiny zinc oxide wires sandwiched between two electrodes.  A sound pad on top vibrates when hit by sound waves which causes the zinc oxide strands to compress and release.  That generates an electrical current that charges the battery.

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