gait pow­ered phone

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Like a self-wind­ing wrist­watch, your mo­bile phone may one day be re-charged by through the move­ment of your own walk­ing. The process is called elec­trowet­ting, where me­chan­i­cal en­ergy is con­verted to elec­tri­cal en­ergy by us­ing a mi­cro-fluid de­vice in which tiny droplets in­ter­act with a sub­strate. This would all be housed in your shoe, and the en­ergy cre­ated could be used to power your phone or MP3 player.

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