A team of scientists have developed a robot that mimics the motion of a stingray by using the cardiac muscles from a rat mounted on a stingray-shaped skeleton. The robot, detailed in a study published in the journal Science, is a wonderfully weird hybrid of biological and mechanical engineering that could be the first step towards a new class of underwater robots.
This robot uses a single layer of muscle allowed for downward contraction to mimic movement. While live creatures have another layer of muscle to pull their wings upward, the skeleton of this robot is designed to rebound after such a contraction, simplifying the overall structure. When the muscles were stimulated with light, the combined actions allowed the robot to swim...
This robot stingray is propelled by rat heart cells, and it’s teaching us about underwater robotics
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