Recently, it was revealed by the U. S. researchers that they are bringing in use, materials called piezoelectrics, in order to push science closer to self-powering devices, like cellular telephones.
It has been informed by Texas A&M Professor Tahir Cagin and his team that they have made a very vital discovery in the area of power harvesting. It is basically a field that is directed to design self-powered devices that do not require replaceable power supplies, such as batteries.