Battery-free moving robots

Researchers at EPFL's School of Engineering have developed a new technique to move small devices and robots using sound instead of relying on batteries or traditional motors. The technology leverages sound vibrations to generate precise movements, making it more efficient and flexible in control—especially for extremely miniature devices that are difficult to power with batteries or complex mechanical parts. This innovation offers an inventive solution for operating tiny robots in medical and industrial applications without the need for constant power sources, opening up new possibilities in AI and precision medicine.

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