Newly unveiled sound-powered micro-robots move without motors or batteries
SMRTR summary
Engineers at EPFL in Switzerland created tiny robots that move using sound waves instead of motors or batteries. By adapting Helmholtz resonance, hollow 3D-printed cavities convert sound into thrust, powering mini-boats and microscopic fliers, including a 150-microgram micro-rocket, with potential uses in medicine, pipeline inspection, and space exploration.
SMRTR provides this summary for quick context. The original article belongs to Interesting Engineering.
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