Wednesday, 28 October 2015

Finger-shaped sonic tractor beam lifts objects

The sonic tractor beam is capable of levitating and manipulating a small polystyrene bead

Fleeing spacecraft being stopped by a powerful tractor beam is something we've all encountered in science-fiction shows. However, acoustic tractor beams that use sound waves to trap or lift objects aren't all that common. A new sonic tractor beam created by an international team of researchers uses acoustic holograms shaped like fingers, cages and twisters to move, manipulate and lift a round polystyrene bead.

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Section: Science

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from Gizmag Emerging Technology Magazine http://ift.tt/1P5dpki

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