液体金属により最大20Wを発電できる電気靴?これまでの圧電素子を大きく凌駕（ウィスコンシン大）

ＩＮＳＴＥＰ　ＮＡＮＯＰＯＷＥＲ　商品概要
http://www.instepnanopower.com/Default.aspx

The mechanical energy produced by humans during walking, which is normally
simply lost as heat, is captured and converted into electrical power ready
to be utilized by wireless personal electronics.

ＳＯＵＲＣＥ　jp.techcrunch　８／２６
http://jp.techcrunch.com/archives/20110825nanopower-shoes-could-generate-20w-of-electricity-during-walking/