Lifetime-configurable soft robots via photodegradable silicone elastomer composites

Developing soft robots that can control their own life-cycle and degrade on-demand while maintaining hyper-elasticity is a significant research challenge. On-demand degradable soft robots, which conserve their original functionality during operation and rapidly degrade under specific external stimul...

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Published in:arXiv.org 2023-02
Main Authors: Min-Ha, Oh, Young-Hwan, Kim, Seung-Min, Lee, Hwang, Gyeong-Seok, Kim, Kyung-Sub, Jae-Young, Bae, Ju-Young, Kim, Ju-Yong, Lee, Yu-Chan, Kim, Kim, Sang Yup, Seung-Kyun Kang
Format: Article
Language:English
Subjects:
Automation
Degradation
Elastomers
Fluorides
Hazardous areas
Hazardous wastes
Manufacturing engineering
Robot control
Robotics
Robots
Silicon
Silicone resins
Silicones
Soft robotics
Stretchability
Temperature sensors
Thermal analysis
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creator Min-Ha, Oh
Young-Hwan, Kim
Seung-Min, Lee
Hwang, Gyeong-Seok
Kim, Kyung-Sub
Jae-Young, Bae
Ju-Young, Kim
Ju-Yong, Lee
Yu-Chan, Kim
Kim, Sang Yup
Seung-Kyun Kang
description Developing soft robots that can control their own life-cycle and degrade on-demand while maintaining hyper-elasticity is a significant research challenge. On-demand degradable soft robots, which conserve their original functionality during operation and rapidly degrade under specific external stimulation, present the opportunity to self-direct the disappearance of temporary robots. This study proposes soft robots and materials that exhibit excellent mechanical stretchability and can degrade under ultraviolet (UV) light by mixing a fluoride-generating diphenyliodonium hexafluorophosphate (DPI-HFP) with a silicone resin. Spectroscopic analysis revealed the mechanism of Si-O-Si backbone cleavage using fluoride ion (F-), which was generated from UV exposed DPI-HFP. Furthermore, photo-differential scanning calorimetry (DSC) based thermal analysis indicated increased decomposition kinetics at increased temperatures. Additionally, we demonstrated a robotics application of this composite by fabricating a gaiting robot. The integration of soft electronics, including strain sensors, temperature sensors, and photodetectors, expanded the robotic functionalities. This study provides a simple yet novel strategy for designing lifecycle mimicking soft robotics that can be applied to reduce soft robotics waste, explore hazardous areas where retrieval of robots is impossible, and ensure hardware security with on-demand destructive material platforms.
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subjects Automation
Degradation
Elastomers
Fluorides
Hazardous areas
Hazardous wastes
Manufacturing engineering
Robot control
Robotics
Robots
Silicon
Silicone resins
Silicones
Soft robotics
Stretchability
Temperature sensors
Thermal analysis
title Lifetime-configurable soft robots via photodegradable silicone elastomer composites
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