This remote-controlled robot crab can sit on the side of a penny

Lab, crab and robotic rehab

How small is Northwestern University’s robot crab? It’s sit-on-the-side-of-a-penny small. It’s half a millimeter wide — making it even smaller than a common flea. Researchers behind it have determined a fairly simple way to control it remotely — when heat is applied to the system, its thin coating of glass deforms the system’s shape, creating […]

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