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Lodestone

Ultrasonic Levitator

by Lodestone Jun 11, 2019
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Hi Tripderp

Yes I thought so.

There is allot of work by Asier Marzo Perez at the Bristol university. Most of his work is open source but is allot more complicated than this humble offering.
The pressure applied to the object is directly proportional to the power applied and therefore this will have direct effect on the mass you can levitate. With a simple standing wave configuration the object thickness is limited to half a wavelength or roughly 4mm at 40Khz.

Asier and his team have made this https://www.bristolpost.co.uk/news/bristol-news/bristol-uni-invented-true-levitation-1233632
Which can lift a 2cm ball by creating an acoustic vortex. And he has many other examples based on phased array technology.

This is his least complicated levitator https://www.bristol.ac.uk/news/2017/august/acoustic-levitation.html
Which is allot more effort to levitate higher mass objects. This would also be seriously loud to most pets.

Interesting.
What is the relationship between the power/wavelength/amplitude and mass that can be carried?