This Super-Tiny Windmill Could Someday Charge Your Phone

This Super-Tiny Windmill Could Someday Charge Your Phone:

Researchers at the University of Texas at Arlington have come up with a way to build a nickel alloy windmill so small, 10 of them could be mounted on a grain of rice. And if all goes as planned, hundreds of the little things could end up in a case that charges up your smartphone.
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