The four-legged miniature machine is powered by tiny explosions
An insect-sized robot powered by tiny explosions can crawl, leap and carry a load many times its own weight.
The researchers used four actuators to drive the robot’s feet. To make the robot jump or crawl, a stream of methane and oxygen is fed into each foot and sparked with electricity from a battery. The resulting reaction between the gases to form water and carbon dioxide releases energy as a small explosion, causing the rubber layer to deform. “That acts sort of like a piston,” Aubin says.
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