Video of the Day: Acoustic levitation

Acoustic levitation (making stuff float through the power of sound) has been around in one form or another at least since the last time we wrote about it, which was July of last year. What's new about this (besides the fact that there's a pretty darn amazing video) is that there's now control over all three dimensions of movement. Ultrasonic standing waves from speaker arrays can grab onto small objects, and by shifting the source of the sound, the objects can be manipulated along any axis. It's completely safe to interact with, is totally cool to watch, and while we can't think of any immediate applications for something like this, we kinda want one anyway.

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Via arXiv

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