The researchers have created a synthetic vascular system capable of pumping an energy-dense hydraulic liquid that stores energy, transmits force, operates appendages and provides structure, all in an integrated design.
"In nature we see how long organisms can operate while doing sophisticated tasks. Robots can't perform similar feats for very long," said Rob Shepherd, associate professor of mechanical and aerospace engineering at Cornell. "Our bio-inspired approach can dramatically increase the system's energy density while allowing soft robots to remain mobile for far longer."
Shepherd - Director - Organic - Robotics - Lab
Shepherd, director of the Organic Robotics Lab, is senior author of "Electrolytic Vascular Systems for Energy Dense Robots," which published June 19 in Nature. Doctoral student Cameron Aubin is lead author.
The researchers tested the concept by creating an aquatic soft robot inspired by a lionfish, designed by co-author James Pikul, a former postdoctoral researcher, now an assistant professor at the University of Pennsylvania. Lionfish use undulating fanlike fins to glide through coral-reef environments.
Skin - Electrodes - Ion - Separator - Membrane
Silicone skin on the outside with flexible electrodes and an ion separator membrane within allows the robot to bend and flex. Interconnected zinc-iodide flow cell...
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