Nano-sized silicone implant could power cellphone, pacemaker

A team of American scientists has developed a microscopic silicone implant that generates small electric currents, leading researchers to believe that a motion as simple as walking could one day power a cellphone.
The tiny implants are made of ceramic strips encased in silicone that when flexed or folded produce electricity. If an implant was to be placed near the lungs, for example, the natural contraction and expansion of the organs could coerce enough energy out of the device to power a pacemaker, according to the Princeton University group.