Your future phone may never need to be charged.
That’s the exciting implication of new research out of the University of Washington, where researchers have created a mobile phone prototype that doesn’t require a battery to operate.
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The astonishingly efficient prototype requires just 3.5 microwatts of juice, and it employs an innovative approach to avoid the need for a battery cell. Instead, it uses ambient power from radio signals and light — its onboard solar cell is “roughly the size of a grain of rice” — to transmit a signal back to a base station 50 feet away. Read more…
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