Employees at Cornell University have created robotic fish with an almost complete vascular system. Inside it are tubes along which the electrolyte moves.
Lionfish was chosen as a model. This fish is found in the coral reefs of the tropics.
Robotic version can swim. Special tests have already been carried out in a seawater tank. At the same time, scientists measured the speed of the robot fish: when moving against the current, a value of 15 cm / min was reached.
The developers claim that the robot can work for 36 hours, but such tests have not yet been conducted.
The mechanism of electrolyte circulation through the tubes is similar to the movement of blood through real vessels. In this case, the transfer of hydraulic energy is possible: if the fluid moves from one part of the caudal fin to another, then it moves to the side. If the movement occurs along the back of this fin, then the fish begins to move in different directions. The pectoral fin is also mobile. With it, lionfish communicate with each other.
This robot has become a proof that such liquids can be used in such devices. In addition, thanks to this, it is possible to demonstrate new methods of energy storage, as well as its transformation into motion.