Researchers Create Microscopic Drones That Rise on Sound Alone
2 Articles
2 Articles
Researchers Create Microscopic Drones That Rise on Sound Alone
Researchers at EPFL’s MicroBioRobotic Systems laboratory have built ultralight flying machines that carry no motors, batteries, or electronics. Hollow cavities printed into their structures turn ordinary sound waves into focused jets of air. Those jets provide the thrust that lifts the devices off a surface and keeps them aloft. The idea begins with a classic [...]
3D-printed sound-powered jet engines propel micro drones — fliers are completely silent; researchers use ultrasonic frequencies to drive 12,000-RPM silent hovering fliers
(Image credit: EPFL/Science Advance)A research team from Switzerland’s École Polytechnique Fédérale de Lausanne (EPFL) Microbiorobotic Systems Laboratory (MICROBS) has developed a “sound-powered engine” that uses the resonant frequency of a specially shaped 3D-printed cavity to “energize” the air inside it and use it for thrust. The researchers then 3D-printed two small drones that were propelled by sound. Sound waves at specific frequencies mad…
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