09 May '11, 4pm

Mobile Phones To Use Noise From Your Conversations To Charge Low Batteries : TreeHugger via @TreeHugger

The Texas A&M and University of Houston researchers focused on a certain type of piezoelectric material, which is able to convert energy when it is manufactured at around 21 nanometers thick. They had hoped to be able to perfect this material so that small disturbances, including sound waves, could be harvested for energy. Now, the Telegraph reports that researchers from Sungkyunkwan University in Seoul, South Korea are moving ahead in devising other materials that could be used for the same purpose. Dr. Sang-Woo Kim states, "The sound that always exists in our everyday life and environments has been overlooked as a source. This motivated us to realize power generation by turning sound energy from speech, music or noise into electrical power." Anyone living in a busy urban environment can attest to the amount of ambient sound that feels intensely annoying...unless it could...

Full article: http://www.treehugger.com/files/2011/05/mobile-phones-cha...

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