One Step Closer to Hover Boards: Three-Dimensional Mid-Air Acoustic Manipulation

"While we’ve seen examples of objects suspended mid-air using quantum levitation and acoustic levitation, a team of three Japanese engineers from The University of Tokyo and the Nagoya Institute of Technology recently unveiled an ambitious device that uses sound waves to move objects through three dimensional space. The machine uses four arrays of speakers to make soundwaves that intersect at a ..."

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