文献类型：期刊文献

英文题名：PEGgel-Based Multimodal Soft Sensors Capable of Decoupling Thermal and Mechanical Stimuli

作者：Chen, Yuqian[1];Liu, Jing[1];Li, Zhongqi[1];Gao, Yuliang[1,2];Gao, Yang[1,2];Wang, Yiming[1,2];Guo, Xuhong[1];Xuan, Fuzhen[2]

机构：[1]East China Univ Sci & Technol, State Key Lab Chem Engn, Shanghai 200237, Peoples R China;[2]East China Univ Sci & Technol, Shanghai Key Lab Intelligent Sensing & Detect Tech, Shanghai 200237, Peoples R China

年份：2024

卷号：9

期号：12

外文期刊名：ADVANCED MATERIALS TECHNOLOGIES

收录：;EI(收录号：20241615927466);WOS:【SCI-EXPANDED(收录号:WOS:001202545400001)】；

基金：The authors acknowledge the financial support of NSFC Grants (21908061), Shanghai Pilot Program for Basic Research (22TQ1400100-9), the "Chenguang Program" supported by the Shanghai Education Development Foundation and the Shanghai Municipal Education Commission (20CG36), the National Key Research and Development Program of China (2022YFD70050101), the Natural Science Foundation of Shanghai (22ZR1417700), the Open Project of State Key Laboratory of Chemical Engineering (SKL-ChE-23C01).

语种：英文

外文关键词：ionic conductor; multimodal soft sensor; PEGgel; strain sensitivity; temperature sensitivity

摘要：Inspired by human skin, soft sensors that are capable of sensing various external signals have been an active area of research. However, the vast majority of the developed soft sensors still lag far behind human skin in terms of multimodal sensing capability. Herein, this work reports on a multimodal soft sensor that can decouple thermal and mechanical signals. The sensor is made of poly(ethylene glycol) gel (PEGgel) containing ionic liquid, which is stretchable and transparent and shows decent strain and temperature sensing performances. Importantly, analysis of the ion relaxation dynamics shows that the charge relaxation time and capacitance change of the sensor are independently sensitive to the variations of temperature and mechanical deformation, respectively. By measuring the charge relaxation time and capacitance, the thermal and mechanical signals detected by the PEGgel sensor can be nicely decoupled without signal interference. Such a multimodal soft sensor may serve as a starting point for the development of lifelike soft sensors for high-tech applications in a variety of fields such as soft robotics, the internet of things, and human-machine interaction. A soft sensor consists of a stretchable and conductive PEGgel is present with excellent strain and temperature sensing abilities. On the basis of the analysis of the ion relaxation dynamics, the soft sensor is able to sense temperature and mechanical deformation independently and shows great potential in the field of soft robotics, the internet of things, and human-computer interaction. image