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Future Wireless Devices Won’t Need Batteries

Science is like dark magic – one day you wake up to news that phones can actually power themselves with invisible waves, all without any batteries. It’s like making energy out of thin air – something I try to do every morning but I’m not as good as these engineers from the University of Washington, whose use of ambient backscatter to wirelessly communicate will one day eliminate the need for batteries. Here’s how that battery-free concept might work:

We can repurpose wireless signals that are already around us into both a source of power and a communication medium…

You can reflect these signals slightly to create a Morse code of communication between battery-free devices.

Click here to watch a video demonstration:

Read the full paper here: Ambient Backscatter: Wireless Communication Out of Thin Air



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