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Updated: Aug 13, 2025

Bioinspired Soft Robot with Incorporated Microelectrodes
Published on: February 28, 2020
Wireless Inchworm-like Compact Soft Robot by Induction Heating of Magnetic Composite
Woojun Jung1, Seonghyeon Lee1, Yongha Hwang1
1Department of Control and Instrumentation Engineering, Korea University, Sejong 30019, Republic of Korea.
Abstract:
Microrobots and nanorobots have been produced with various nature-inspired soft materials and operating mechanisms. However, freely operating a wirelessly miniaturized soft robot remains a challenge. In this study, a wireless crawling compact soft robot using induction heating was developed. The magnetic composite heater built into the robot was heated wirelessly via induction heating, causing a phase change in the working fluid surrounding the heater. The pressure generated from the evaporated fluid induces the bending of the robot, which is composed of elastomers. During one cycle of bending by heating and shrinking by cooling, the difference in the frictional force between the two legs of the robot causes it to move forward. This robot moved 7240 μm, representing 103% of its body length, over nine repetitions. Because the robot's surface is made of biocompatible materials, it offers new possibilities for a soft exploratory microrobot that can be used inside a living body or in a narrow pipe.
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