Acoustic waves give motorless micro-robots the power to fly and steer

Researchers have adapted a century-old method used for tuning musical instruments to create tiny robots that move without any motors. These micro-robots can fly, float, and change direction using only sound waves as their propulsion source. The technique offers a novel approach to powering small autonomous devices.

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The research adapts a century-old acoustic technique originally developed for tuning musical instruments, applying it at microscopic scale to create motorless robots. These devices achieve flight, hovering, and directional changes using sound waves as their sole propulsion source, eliminating the need for onboard mechanical components