EPFL Engineers Develop Sound-Powered Micro-Robots Without Motors or Batteries
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- InterestingEngineering.com
Engineers at Switzerland’s École Polytechnique Fédérale de Lausanne (EPFL) have developed a method to convert sound waves into directional thrust, enabling the creation of micro-machines that operate without motors, batteries, or electronics. This innovative technique utilizes Helmholtz resonance, where sound excites air within a cavity, generating propulsion through airflow imbalance.
This advancement is significant as it allows for the design of small boats and ultralight aerial vehicles powered solely by sound, eliminating the need for traditional power sources. The EPFL team’s approach, which involves 3D-printed hollow cavities, represents a shift from previous acoustic levitation methods, offering a new way to achieve self-generating thrust through concentrated air jets.
Looking ahead, the potential for further miniaturization of these sound-powered devices could revolutionize robotics and aeronautics. Researchers have already demonstrated prototypes at both centimeter and microscopic scales, showcasing capabilities such as controlled navigation and impressive lift, indicating a promising future for passive materials in robotic applications. No further timeline was disclosed at the time of publication.
Original report
Newly unveiled sound-powered micro-robots move without motors or batteries
InterestingEngineering.com · Mrigakshi DixitThis briefing is an independently written summary based on publicly available reporting and is provided for industry information and news discovery. The original report and source publication are credited and linked where applicable. RobotToday does not claim ownership of third-party source material.
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