A new wearable generator creates electricity from body heat

Now your sweaty body can power your phone. Like Neo in the Matrix, a new system created by researchers at North Carolina State University lets you generate electricity with a wearable device. Previous systems used massive, rigid heat sinks. This system uses a body-conforming patch that can generate 20 μW per centimeter squared. Previous systems generated only 1 microwatt or less. The system consists of a conducive layer that sits on the skin and prevents heat from escaping. The head moves through a thermoelectric generator and then moves into an outer layer that completely dissipates outside the body. It is 2mm thick and flexible.

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