Self-morphing, wing-like feet enhance surface maneuverability of water striders and robots

A collaborative team of researchers from the University of California, Berkeley, the Georgia Institute of Technology, and Ajou University in South Korea has revealed that the unique fan-like propellers of Rhagovelia water striders—which allow them to glide across fast-moving streams—open and close passively, like a paintbrush, ten times faster than the blink of an eye.

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