Levitating objects with sound

By Andrew Grant, 12:33 PM February 6, 2014

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Step into Jun Rekimoto’s lab at the University of Tokyo and you might see a screw floating through the air. Don’t worry, it’s normal: Rekimoto’s team has built a new device that uses sound to levitate objects and — for the first time — maneuver them in all directions. For decades physicists have levitated milli­meter-sized objects by trapping them in pockets of low pressure between the crest of one sound wave and the trough of another.

But moving those suspended objects has been ...

Source URL: https://www.sciencenews.org/article/levitating-objects-sound