Cockroaches inspire tiny search and rescue robots
Researchers in China and the US build tiny robots that they hope will replace sniffer dogs in disasters
Cockroaches are near-indestructible little creatures. These hardy insects have existed since at least 320 million years ago, outliving dinosaurs. A cockroach can also carry loads of up to 900 times its body weight, shrink to a quarter of its height to fit into small crevices and live for a week without its head.
Inspired by the qualities of this humble bug, a group of researchers from China and the United States have created a prototype of a fast-moving and near-indestructible miniature robot, which could potentially replace sniffer dogs in detecting people trapped in a rubble after a major earthquake or similar disastrous event.
Researchers from China’s Tsinghua University and the University of California, Berkeley, published their study on so-called soft robots in the academic journal Science Robotics last week.
“Although the cockroach is an annoying pest, it has certain interesting features, including the ability to move fast in a narrow space and being hard to squash,” said Zhang Min, an assistant professor at Tsinghua University’s Graduate School in Shenzhen and one of the study’s authors, in an email interview. “These features inspired us to develop a fast-moving and robust soft robot.”
Their work on soft robots was conducted under the Tsinghua-Berkeley Shenzhen Institute partnership, an initiative to collaborate with global researchers on fields such as environmental science and new energy technology.
Scientists have long taken inspiration from insects, including cockroaches, for engineering robots. Researchers from UC Berkeley previously developed a palm-sized, roach-like robot – about 20 times the size of the bug – for rescue use in 2017.