Jul 16, 2017
First battery-free cellphone makes calls
Posted by Shailesh Prasad in category: mobile phones
UW engineers have designed the first battery-free cellphone that can send and receive calls using only a few microwatts of power. Mark Stone/University of Washington.
University of Washington researchers have invented a cellphone that requires no batteries — a major leap forward in moving beyond chargers, cords and dying phones. Instead, the phone harvests the few microwatts of power it requires from either ambient radio signals or light.
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