Robust,self-adhesive,and low-contact impedance polyvinyl alcohol/polyacrylamide dual-network hydrogel semidry electrode for biopotential signal acquisition

作     者：Guangli Li Ying Liu Yuwei Chen Yonghui Xia Xiaoman Qi Xuan Wan Yuan Jin Jun Liu Quanguo He Kanghua Li Jianxin Tang 

作者机构：Hunan Key Laboratory of Biomedical Nanomaterials and DevicesCollege of Life Sciences and ChemistryHunan University of TechnologyZhuzhouChina Department of NeurologyZhuzhou People's HospitalZhuzhouChina Zhuzhou Institute for Food and Drug ControlZhuzhouChina 

出 版 物：《SmartMat》 (智能材料（英文）)

年 卷 期：2024年第5卷第2期

页      面：67-82页

核心收录：

学科分类：0831[工学-生物医学工程（可授工学、理学、医学学位）] 0710[理学-生物学] 081702[工学-化学工艺] 1002[医学-临床医学] 1001[医学-基础医学(可授医学、理学学位)] 08[工学] 0817[工学-化学工程与技术] 0805[工学-材料科学与工程（可授工学、理学学位）] 0703[理学-化学] 0812[工学-计算机科学与技术（可授工学、理学学位）] 

基　　金：supported by the National Natural Science Foundation of China (Nos.62176089,61703152) the Hunan Provincial Natural Science Foundation (Nos.2021JJ30226,2018JJ3134) Scientific Research Foundation of Hunan Provincial Education Department (No.21B0532) Science and Technology Planning Project of Zhuzhou (No.2020015) 

主　　题：brain-computer interface dual-network hydrogel electrocardiogram signals electroencephalography signals semidry electrode 

摘      要：Herein,we fabricated a flexible semidry electrode with excellent mechanical performance,satisfactory self-adhesiveness,and low-contact impedance using physical/chemical crosslinked polyvinyl alcohol/polyacrylamide dual-network hydrogels(PVA/PAM DNHs)as an efficient saline *** resultant PVA/PAM DNHs showed admirable adhesive and compliance to the hairy scalp,facilitating the establishment of a robust electrode/skin interface for biopotential signal ***,the PVA/PAM DNHs steadily released trace saline onto the scalp to achieve the minimized potential drift(1.47±0.39 mV/min)and low electrode–scalp impedance(18.2±8.9 kΩ@10 Hz).More importantly,the application feasibility of real-world brain−computer interfaces(BCIs)was preliminarily validated by 10 participants using two classic BCI *** mean temporal cross-correlation coefficients between the semidry and wet electrodes in the eyes open/closed and the N200 speller paradigms are 0.919±0.054 and 0.912±0.050,*** electrodes demonstrate anticipated neuroelectrophysiological responses with similar *** semidry electrode could also effectively capture robust P-QRS-T peaks during electrocardiogram *** their outstanding advantages of fast setup,user-friendliness,and robust signals,the proposed PVA/PAM DNH-based electrode is a promising alternative to wet electrodes in biopotential signal acquisition.