Tiny energy harvesting generators yields energy from vibrations

Do not be fooled by size. These little energy suckers may seem small, but they can harvest energy from the smallest arbitrary, non-periodic vibrations in bridges and on the human body too. Designed and currently being developed by a group of researchers from the University of Michigan, these little energy generators may probably not have your electric car juiced up, but they sure can power up your wrist watch and a pacemaker using the wearers body motions.

The device is yet in its infant stages and will not power up anything outside the confines of the laboratory soon. Researchers are working on prototypes and are hoping to patent this awesome little power-up device.
[Engadget]