3D-Printed ‘Lego’ Bricks Could Bend Sound into Acoustic Holograms

3D-printed bricks that look like Lego pieces could provide a simple, low-cost way of creating acoustic holograms — 3D shapes and structures made of sound — for applications as varied as entertainment, medicine or wireless charging, according to a recent study.

http://www.livescience.com/56735-3d-printed-bricks-create-acoustic-holograms.html

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