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Imagine a microscopic robot propelled by undulating hairs moving through your stomach to deliver medication to diseased cells. That’s the kind of future researchers at ETH Zurich hope to manifest with their latest creation.

The team of scientists at the public research university in Switzerland has built a microrobot that’s inspired by the movement of starfish larva. Their yet-to-be-named robot measures just a quarter of a millimeter across and swims through liquid by moving tiny surface hairs, or cilia, found on all kinds of microorganisms, including newborn starfish. 

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