The First Battery-Free Cellphone

The battery-free cellphone prototype. (📷: Mark Stone/University of Washington)
A look at the battery-free cellphone. (📹: University of Washington)
The phone can send and receive calls using only a few microwatts of power. (📷: Mark Stone/University of Washington)

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Scientist, Author, Hacker, Maker, and Journalist.

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Alasdair Allan

Alasdair Allan

Scientist, Author, Hacker, Maker, and Journalist.