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The world’s first sonic tractor beams that can lift and move objects using soundwaves have been built by a team that includes researchers at the University of Sussex.
Tractor beams are most commonly known as mysterious rays that can grab and lift objects. The concept was created by science-fiction writers but has since come to fascinate scientists and engineers – could a tractor beam actually be made?
Researchers at the Universities of Sussex and Bristol, in collaboration with Ultrahaptics, have now built a working tractor beam that uses high-amplitude soundwaves to generate an acoustic hologram that can pick up and move small objects.
The technique, published in Nature Communications on 27 October 2015, could be developed for a wide range of applications. For example, a sonic production line could transport delicate objects and assemble them – all without physical contact. Or a miniature version could grip and transport drug capsules…
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