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Video:3Dvolution: Japan Uses Acoustic Levitation to Move Objects in 3D
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Japanese scientists have been successful in moving an object in a three-dimensional space through a complex system of acoustic levitation, surpassing previous research endeavors that lifted the objects in two-dimensions.
In order to move expanded-polystyrene particles of 0.6 mm and 2 mm in diameter, the Japanese scientist, at the University of Tokyo and the Nagoya Institute of Technology, had to place the objects inside a complex set-up of four arrays of speakers.
Using a refinement of the existing technology of sound wave management, bubbles, a screw and a tiny piece of wood were airlifted and moved around in all direction within the experiment’s confines.
“We considered extended acoustic manipulation whereby millimeter-sized particles were levitated and moved three-dimensionally by localized ultrasonic standing waves, which were generated by ultrasonic phased arrays,” the study stated.
The experiment machine is comprised of audio speakers capable generating inaudible high frequencies sound waves that intersect inside a restrained space. The waves then generate a “moveable ultrasonic focal point”, frequency noise greater than 20kHz, where cross-over creates standing waves. Some waves are kept in constant position serving as a suspending force while other waves are used to support a floating object jammed in the standing waves.
Source: http://truthisscary.com/2014/01/video3dvolution-japan-uses-acoustic-levitation-to-move-objects-in-3d/
