Tiny Robotic Crab Is Smallest-Ever Remote-Controlled Walking Robot - Slashdot
source link: https://hardware.slashdot.org/story/22/05/27/2219205/tiny-robotic-crab-is-smallest-ever-remote-controlled-walking-robot
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Tiny Robotic Crab Is Smallest-Ever Remote-Controlled Walking Robot
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Smaller than a flea, the crab is not powered by complex hardware, hydraulics or electricity. Instead, its power lies within the elastic resilience of its body. To construct the robot, the researchers used a shape-memory alloy material that transforms to its "remembered" shape when heated. In this case, the researchers used a scanned laser beam to rapidly heat the robot at different targeted locations across its body. A thin coating of glass elastically returns that corresponding part of structure to its deformed shape upon cooling.
As the robot changes from one phase to another -- deformed to remembered shape and back again -- it creates locomotion. Not only does the laser remotely control the robot to activate it, the laser scanning direction also determines the robot's walking direction. Scanning from left to right, for example, causes the robot to move from right to left. The research was published in the journal Science Robotics.
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