![]() ![]() Do you have what it takes to help the little sea creature Cthulhu tentacle to survive and become a huge kraken one day? Download our fun, addicting game and find out how long Cthulu underwater games adventure can last in the vast ocean! Avoid dangerous objects like spiky coral reefs, sea urchins, and many other underwater sea monsters and traps. Keep the cute alien Cthulhu swimming underwater with his large tentacle! Tap left or right to make it swim to the right or to the left. It was supported in part by the National Science Foundation under grant DMREF-1533985 and Festo Corporate’s project division.Octopus Tentacle – Cthulhu Kraken Underwater Games This research was also co-authored by Ning An, Connor Green, Zheyuan Gong, Tianmiao Wang, Elias M. ![]() ![]() “The results from our study not only provide new insights into the creation of next-generation soft robotic actuators for gripping a wide range of morphologically diverse objects, but also contribute to our understanding of the functional significance of arm taper angle variability across octopus species,” said Katia Bertoldi, the William and Ami Kuan Danoff Professor of Applied Mechanics at SEAS, and co-senior author of the study. The tapering also allowed the arm to squeeze into confined spaces and retrieve objects. The researchers successfully tested the device on many different objects, including thin plastic sheets, coffee mugs, test tubes, eggs, and even live crabs. By changing the pressure and vacuum, the arm can attach to an object, wrap around it, carry it, and release it. Researchers control the arm with two valves, one to apply pressure for bending the arm and one for a vacuum that engages the suckers. Xie is the co-inventor of the Festo Tentacle Gripper, which is the first fully integrated implementation of this technology in a commercial prototype. (Video courtesy of the Bertoldi Lab/Harvard SEAS) By changing the pressure and vacuum, the arm can attach to any object, wrap around it, carry it, and release it. The soft robot is controlled with two valves, one to apply pressure for bending the arm and one for a vacuum that engages the suckers. “Although our design is much simpler than its biological counterpart, these vacuum-based biomimetic suckers can attach to almost any object.” “We mimicked the general structure and distribution of these suckers for our soft actuators,” said co-first author Zhexin Xie, a PhD student at Beihang University. Next, the team looked at the layout and structure of the suckers (yes, that is the scientific term) and incorporated them into the design. The researchers began by studying the tapering angle of real octopus arms and quantifying which design for bending and grabbing objects would work best for a soft robot. The research is published in Soft Robotics. “Our research is the first to quantify the tapering angles of the arms and the combined functions of bending and suction, which allows for a single small gripper to be used for a wide range of objects that would otherwise require the use of multiple grippers.” “Most previous research on octopus-inspired robots focused either on mimicking the suction or the movement of the arm, but not both,” said August Domel, a recent PhD graduate of Harvard and co-first author of the paper. (Video courtesy of the Bertoldi Lab/Harvard SEAS) Download Image ![]()
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