Meredith Perry and Nora Dweck, two freshly minted University of Pennsylvania graduates, were at the exclusive D9 tech conference this week showing off their compelling technology demo: Ultrasonic power transfer.
uBeam, the company they created around their tech, uses sounds waves beyond the range of human (and dog) hearing to transmit power. In a proof-of-concept demo, Perry was able to move 5 volts at 50 milliwatts, or a quarter of a watt, over three feet. She says that with custom components, not the off-the-shelf piezo speakers roughed into the tech demo, she’ll be able to send 25 watts over ten feet.
» via CNET