This ‘Ultrasonic gripper’ lets robots move things without touching them

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Reported today on TheNextWeb

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This 'Ultrasonic gripper' lets robots move things without touching them

When we think about robots working in factories and assembly lines, we often imagine large robotic arms moving heavy components around. But there's also automation for small fragile materials as well, requiring the lightest touch to move. No problem: Robots may soon be able to move small objects without touching them at all.

Marcel Schuck, a researcher at the Swiss Federal Institute of Technology in Zurich (ETH Zurich), is developing a method for robots to carry small objects without touching them at all. Ultrasound waves can generate a pressure wave that humans can't see or hear. Balance the amount of pressure around a small object, and it will seem to float in midair, in a phenomenon known as acoustic levitation. It looks a bit like robotic telekinesis.

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Of course, in actuality, it's being held in place by the forces generated by the sound field – an acoustic trap of sorts. Schuck's prototype holds small objects in a force field created by a myriad of tiny speakers fitting on the interior of two semispheres. What's more, Schuck's software allows the sphere to be mov



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