Self-adhesive and biocompatible dry electrodes with conformal contact to skin for epidermal electrophysiology  

作　　者：Xiaoxue Lin Zeping Ou Xuewei Wang Can Wang Yunfei Ouyang Ibrahim M.Mwakitawa Feng Li Rui Chen Yaru Yue Jihe Tang Wei Fang Shanshan Chen Bing Guo Jianyong Ouyang Tatyana Shumilova Yongli Zhou Liang Wang Chengwu Zhang Kuan Sun 

机构地区：[1]MOE Key Laboratory of Low-grade Energy Utilization Technologies and Systems,School of Energy&Power Engineering,Chongqing University,Chongqing,China [2]School of Basic Medical Sciences,Shanxi Medical University,Taiyuan,China [3]Shanxi Province Brain Degenerative Diseases Precision Diagnosis&Treatment Engineering Research Center,Shanxi Medical University,Jinzhong,China [4]Department of Neurology,The First Affiliated Hospital of Chongqing Medical University,Chongqing,China [5]Department of Materials Science&Engineering,National University of Singapore,Singapore,Singapore [6]FRC Komi Science Center,Institute of Geology,Ural Branch,Russian Academy of Sciences,Syktyvkar,Russia

出　　处：《Interdisciplinary Materials》2024年第5期775-790,共16页交叉学科材料（英文）

基　　金：Chongqing Funds for Distinguished Young Scientists,Grant/Award Number:cstc2021jcyj-jqX0033;Key Laboratory of Flexible Electronics of Zhejiang Province,Grant/Award Number:2022FE003;Youth Talent Support Program of Chongqing,Grant/Award Numbers:CQYC2021059206,cstc2021ycjhbgzxm0334;National Key Research and Development Program of China,Grant/Award Number:2022YFB3803300;National Natural Science Foundation of China,Grant/Award Numbers:52203211,62074022;Natural Science Foundation of Chongqing Municipality,Grant/Award Number:cstc2020jcyjmsxmX0851;High-Level Medical Reserved Personnel Training Project of Chongqing,Grant/Award Number:2020GDRC019。

摘　　要：Long-term biopotential monitoring requires high-performance biocompatible wearable dry electrodes.But currently,it is challenging to establish a form-preserving fit with the skin,resulting in high interface impedance and motion artifacts.This research aims to present an innovative solution using an all-green organic dry electrode that eliminates the aforementioned challenges.The dry electrode is prepared by introducing biocompatible maltitol into the chosen conductive polymer,poly(3,4-ethylenedioxythiophene):poly(styrenesulfonate).Thanks to the secondary doping and plasticizer effect of maltitol,the dry electrode exhibits good stretchability(62%),strong self-adhesion(0.46 N/cm),high conductivity(102 S/cm),and low Young's modulus(7 MPa).It can always form a conformal contact with the skin even during body movements.Together with good electrical properties,the electrode enables a lower skin contact impedance compared to the current standard Ag/AgCl gel electrode.Consequently,the application of this dry electrode in bioelectrical signal measurement(electromyography,electrocardiography,electroencephalogra-phy)and long-term biopotential monitoring was successfully demonstrated.

关 键 词：biocompatibility conductivity dry electrode self-adhesion Young's modulus 

分 类 号：TM91[电气工程—电力电子与电力传动]