Robotic fish that is as swift as a real one
Andrew Marchese, a graduate student from MIT’s Department of Electrical Engineering and Computer Science has built a robotic fish that very swift in its movement, similar to real fish. Developed on the concept of soft robots that can change the body form to have more flexibility on movement, this robotic fish. Using 3D printed moulds to create the head, tail and gut which are made from silicone rubber and polymer material; Marchese fitted fish’s tail with a tightly undulating channel that fills with carbon dioxide to bend the tail in opposite direction, making the fish perform almost 20 to 30 escape maneuvers including changing direction at 100 degree angles at the blink of an eye.
Robotic Fish which moves in the water like a real fish.
To accomplish a very quick and precise turning motion, Marchese decided to have the diameter of nozzle releasing the gas and the amount of time it is left open as the criteria. Although he did not inherently want to incorporate these features and just wanted to have robotic fish that could move in water, the basic design facilitated for such swift movement. Infact he designed the robotic fish to mix with real fish and understand their behavior in real time.
Since the carbon dioxide canisters in the fish’s tummy can hold a small amount of gas, Marchese is planning to come up with a new version of the robotic fish that can swim for almost 30 minutes courtesy its water filled inflatable channels.