Wireless Inchworm-like Compact Soft Robot by Induction Heating of Magnetic Composite

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 mag...

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Main Authors: Woojun Jung, Seonghyeon Lee, Yongha Hwang
Format: Article
Language:English
Published: MDPI AG 2023-01-01
Series:Micromachines
Subjects:
Online Access:https://www.mdpi.com/2072-666X/14/1/162
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author Woojun Jung
Seonghyeon Lee
Yongha Hwang
author_facet Woojun Jung
Seonghyeon Lee
Yongha Hwang
author_sort Woojun Jung
collection DOAJ
description 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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spelling doaj.art-fe7ff44347414f1daf677725259855352023-11-30T23:34:03ZengMDPI AGMicromachines2072-666X2023-01-0114116210.3390/mi14010162Wireless Inchworm-like Compact Soft Robot by Induction Heating of Magnetic CompositeWoojun Jung0Seonghyeon Lee1Yongha Hwang2Department of Control and Instrumentation Engineering, Korea University, Sejong 30019, Republic of KoreaDepartment of Control and Instrumentation Engineering, Korea University, Sejong 30019, Republic of KoreaDepartment of Control and Instrumentation Engineering, Korea University, Sejong 30019, Republic of KoreaMicrorobots 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.https://www.mdpi.com/2072-666X/14/1/162wireless robotsoft robot3D printingmagnetic induction
spellingShingle Woojun Jung
Seonghyeon Lee
Yongha Hwang
Wireless Inchworm-like Compact Soft Robot by Induction Heating of Magnetic Composite
Micromachines
wireless robot
soft robot
3D printing
magnetic induction
title Wireless Inchworm-like Compact Soft Robot by Induction Heating of Magnetic Composite
title_full Wireless Inchworm-like Compact Soft Robot by Induction Heating of Magnetic Composite
title_fullStr Wireless Inchworm-like Compact Soft Robot by Induction Heating of Magnetic Composite
title_full_unstemmed Wireless Inchworm-like Compact Soft Robot by Induction Heating of Magnetic Composite
title_short Wireless Inchworm-like Compact Soft Robot by Induction Heating of Magnetic Composite
title_sort wireless inchworm like compact soft robot by induction heating of magnetic composite
topic wireless robot
soft robot
3D printing
magnetic induction
url https://www.mdpi.com/2072-666X/14/1/162
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AT seonghyeonlee wirelessinchwormlikecompactsoftrobotbyinductionheatingofmagneticcomposite
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