Three-Dimensional Mid-Air Acoustic Manipulation created by Japanese Scientists

Engineers from The University of Tokyo and The Nagoya Institute of Technology have recently introduced to the public the sound waves that manipulate objects in mid-air.

The apparatus created by Yoichi Ochiai, Takayuki Hoshi and Jun Rekimoto uses four phased arrays of externally controlled speakers intersecting at a focal point. Surprisingly, the process is absolutely silent as the device uses ultrasonic speakers.

Also see http://www.youtube.com/watch?v=wvJAgrUBF4w

Source: arxiv.org (via: thisiscolossal)