Levitation Through Sound: Three-Dimensional Mid-Air Acoustic Levitation

The future is here! For the first time in history, three-dimensional levitation was achieved with sound waves. Using ultrasonic speakers so that nothing is heard, small particles were successfully suspended and manipulated in mid-air under gravity. The experiment was also successful with small objects such as screws, LEDs, and resistors.

Watch the following video for a more detailed explanation

Yoichi Ochiai (The University of Tokyo)
Takayuki Hoshi (Nagoya Institute of Technology)
Jun Rekimoto (The University of Tokyo / Sony CSL)

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