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Phys.org — Technology · September 22, 2026 · On the brief until October 6, 2026

Snapping rods let frog-like robot outrun rigid legs across six terrains

RoboticsMechanical EngineeringBiology
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Researchers developed a hopping robot that uses twisted elastic rods to store and suddenly release energy. The design allowed the small machine to outrun rigid-legged systems across multiple surfaces and swim. Mechanical engineers can now use shape-driven instability instead of larger motors to power miniature robots.

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Relying on material snapping rather than active motor control challenges traditional approaches to robotic motion.

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