Free electricity by the movement of the body?

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They have understood well in the near future we will have electricity by exploiting the free movement of our body. A group of scientists at the Georgia Institute of Technology, USA, has developed a system that produces tissue technology capable of generating electricity. At the stretch, friction or simply to be moved by the wind, this material would produce enough energy to recharge, for example, an MP3 player or a cell phone. The study, published in the latest edition of the journal Nature, is based on the so-called effect piezoléctrico, technology used in many projects to generate clean energy. Nature explains that the team of Georgia Institute of Technology, led by Professor Zhong Lin Wang, covered with fabric fibers of zinc oxide nanowires 1,800 times thinner than a human hair. The researchers have not yet produced articles with this fabric, which estimated that the clothes covered with nanowires take some time to appear on the market. According to experts, the main problem is that the nanowires of zinc oxide can not be wet, so the shirt power generation would be useless after the first washed. More information in the website of the Georgia Institute of Technology on http://www.nano.gatech.edu/news/release.php?id=1715