Wearable pressure sensors based on antibacterial and porous chitosan hydrogels for full-range human motion detection

作     者：ZHANG YingXin LIU HanGuang JIN ShunYu LI YaJuan ZHANG Wan ZHOU Hang NIE ZanXiang HUANG Yuan 

作者机构：School of Microelectronics Science and Technology Sun Yat-sen University Hefei National Research Center for Physical Sciences at the Microscale University of Science and Technology of China Department of Clinical Laboratory the First Affiliated Hospital of Anhui Medical University School of Electronic and Computer Engineering Peking University Shenzhen Graduate School Zinergy Shenzhen Ltd. 

出 版 物：《Science China Technological Sciences》 (中国科学:技术科学(英文版))

年 卷 期：2024年第67卷第8期

页      面：2475-2484页

核心收录：

学科分类：081702[工学-化学工艺] 08[工学] 0817[工学-化学工程与技术] 080202[工学-机械电子工程] 0805[工学-材料科学与工程（可授工学、理学学位）] 0802[工学-机械工程] 

基　　金：supported by the National Natural Science Foundation of China (Grant No. 62101605) Zhuhai Fundamental and Application Research (Grant No. 2220004002896) Guangdong Introducing Innovative and Entrepreneurial Teams Program (Grant No. 2019ZT08Z656) Shenzhen Science and Technology Program (Grant No. KQTD20190929-172522248) 

主　　题：porous hydrogels antibacterial performances wearable pressure sensors full-range human motion chitosan 

摘      要：Wearable pressure sensors made from conductive hydrogels hold significant potential in health monitoring. However, limited pressure range（Pa to hundreds of kPa） and inadequate antibacterial properties restrict their practical applications in diagnostic and health evaluation. Herein, a wearable high-performance pressure sensor was assembled using a facilely prepared porous chitosan-based hydrogel, which was constructed from commercial phenolphthalein particles as a sacrificial template. The relationship between the porosity of hydrogels and sensing performance of sensors was systematically explored. Herein, the wearable pressure sensor, featuring an optimized porosity of hydrogels, exhibits an ultrawide sensing capacity from 4.83 Pa to 250 k Pa（range-to-limit ratio of 51,760） and high sensitivity throughout high pressure ranges(0.7 kPa-1, 120–250 kPa). The presence of chitosan endows these hydrogels with outstanding antibacterial performance against E. coli and S. aureus, making them ideal candidates for use in wearable electronics. These features allow for a practical approach to monitor full-range human motion using a single device with a simple structure.