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Tiny vibration-powered robots can repair your body from the inside



The bots are only 2mm (about 0.08in) long and weigh just 5mg (less than 0.0002oz), but they can move relatively briskly at about 8mm (just over 0.31in) per second. They're flexible too. The actuators are made of lead zirconate titanate that can turn voltage into vibration for movement, or the reverse if they need to power sensors

Georgia Tech's existing design would not be much useful in its current form. It can only move in one direction, and there is no payload. Movement could be solved by combining robots together to respond to different frequencies, though, and the creators hope to develop bots that can jump or swim. If the technology continues to advance, however, you could see uninterrupted bots that could fix health problems from within, or achieve simpler feats like tracking environmental conditions and moving small objects


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