Hack Blogspot

JUNG YEON-JE / REUTERS A thermal scanner shows the heat signatures of passengers arriving at Seoul's Incheon Airport. Such devices were deployed in the spring to help prevent the spread of swine flu.

Highways, train stations, and even dance floors: the world is full of vibrating surfaces that could yield a rich trove of clean, sustainable energy. It’s called piezoelectric energy, formed by the conversion of mechanical strain into electrical current. Now a team of researchers in Europe has developed a micro-scaled piezoelectric device that could harvest energy from machinery as well as from infrastructure and buildings.