A Volumetric Display using an Acoustically Trapped Particle
This video describes a volumetric display I designed and built that uses a phased arrray of ultrasonic transducers to levitate a 1mm foam ball and move it at speeds greater than 1m, s. The POV effect makes it seem as if you re drawing in midair This was such a fun project I still giggle (maniacally) when watching this thing go. There s something truly magical about watching something levitate in midair and then start zipping around so fast, you can t see it. You can find all the design files here: References: PhysicsGirl acoustic levitator: Acoustic levitator Instructable: University of Sussex video: University of Sussex paper:
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