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Researchers develop new battery-free technology that draws power out of thin air

The key innovation is a nanoscale spin-rectifier that can convert extremely low-power RF signals of less than -20 dBm into a usable direct current voltage. This device overcomes a primary pain point of existing RF energy harvesting rectifiers, which struggle to operate efficiently at low ambient power levels.

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https://www.techspot.com/news/104101-researchers-develop-new-battery-free-technology-draws-power.html?utm_source=dlvr.it&utm_medium=blogger

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