Earthworms creep along the ground by alternately squeezing and stretching muscles along the length of their bodies, inching forward with each wave of contractions. Snails and sea cucumbers also use this mechanism, called peristalsis, to get around, and our own gastrointestinal tracts operate by a similar action, squeezing muscles along the esophagus to push food to the stomach.
Now researchers at MIT, Harvard University and Seoul National University have engineered a soft autonomous robot that moves via peristalsis, crawling across surfaces by contracting segments of its body, much like an earthworm. The robot, made almost entirely of soft materials, is remarkably resilient: Even when stepped upon or bludgeoned with a hammer, the robot is able to inch away, unscathed.
https://www.youtube.com/watch?v=EXkf62qGFII
Keywords: biomachine engineering RESEARCH science VIEW ALL
Space Messengers is made possible in part by the Citizen Diplomacy Action Fund for U.S. Alumni; an opportunity sponsored by the U.S. Department of State with funding provided by the U.S. Government and administered by Partners of the Americas. This project is supported in part by New Mexico Arts, a division of the Department of Cultural Affairs, and by the National Endowment for the Arts