🤖EPFL Develops Sound-Powered Machines With Hollow Cavities
Imagine boats and drones powered solely by sound waves
TL;DR
Researchers at EPFL have created machines that move using hollow cavities instead of motors. From miniature boats to microfliers, these devices could revolutionize robotics and aeronautics.
EPFL researchers have developed sound-powered machines that rely on hollow cavities rather than traditional mechanical components. These devices can be steered around obstacles autonomously and are made from various materials like 3D-printing plastics and rubber-like polymers. At the centimeter scale, miniature boats with up to three cavities were built, capable of autonomous navigation. Using a 3D nanoprinting technique, microfliers weighing just 150 micrograms generate direct upward thrust or helicopter-like lift depending on their design. This technology could lead to advanced robotic devices that change shape in response to sound frequencies.
Key Points
Researchers at EPFL's School of Engineering developed sound-powered devices with hollow cavities published in Science Advances (2026).
Miniature boats equipped with up to three cavities can be steered around obstacles autonomously, built from common 3D-printing plastics.
Microfliers weighing just 150 micrograms generate direct upward thrust like a rocket using their hollow structures and 3D nanoprinting technique.
Another microflier design combined the cavities with tiny blades spinning at up to 13,000 RPM for stable helicopter-like aerodynamic lift.
The concept allows further miniaturization, enabling advanced designs that push the boundaries of robotics and aeronautics.
Why It Matters
If you're working on autonomous drones or robotic boats, EPFL's sound-powered machines could change your design approach. Imagine devices that can navigate autonomously using only sound waves, potentially reducing weight and complexity.
Frequently Asked Questions
Why does this matter?
If you're working on autonomous drones or robotic boats, EPFL's sound-powered machines could change your design approach. Imagine devices that can navigate autonomously using only sound waves, potentially reducing weight and complexity.
What happened?
Researchers at EPFL have created machines that move using hollow cavities instead of motors. From miniature boats to microfliers, these devices could revolutionize robotics and aeronautics.
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