Boffins working on battery free mobile
 

Zero power

Researchers from the University of Washington are working on a technique which will make batteries a thing of the past for mobile phones.

The team has developed a phone that uses "almost zero power" which harvests microwatts of power from RF signals transmitted from a base station that is 31 feet away.

Associate professor Shyam Gollakota, who co-authored a paper which detailed the breakthrough. said additional power is harnessed via ambient light through the use of miniature photodiodes that are about the size of a grain of rice.

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