Researchers from Wake Forest’s Center for Nanotechnology and Molecular Materials manufactured a clothlike material that generates electricity using body heat. Generators that produce electricity using heat are inefficient. However, heat is almost everywhere and is generated by almost everything, even the human body. Because it is a very common energy source and costs only a little, such as leftover heat produced by engines, solar energy, or wind energy, then even if it is not efficient, it will be practical. This technology can be used to charge mp3 players, cell phones, and power medical monitoring equipment. It might even power electronic implants too, but only if the bodys immune system doesn’t negatively react to it.
For how it works and more interesting details, visit the article at the URL: http://cleantechnica.com/2012/02/24/imagine-electricity-generating-clothes-but-without-solar-panels-on-them/
Also, to see more on this subject, go to: http://www.businessinsider.com/david-carroll-on-thermoelectric-fabrics-2013-4