Stretchable, self‐healable, and breathable biomimetic iontronics with superior humidity‐sensing performance for wireless respiration monitoring

作     者：Qiongling Ding Hao Wang Zijing Zhou Zixuan Wu Kai Tao Xuchun Gui Chuan Liu Wenxiong Shi Jin Wu 

作者机构：State Key Laboratory of Optoelectronic Materials and Technologiesthe Guangdong Province Key Laboratory of Display Material and TechnologySchool of Electronics and Information TechnologySun Yat‐sen UniversityGuangzhouChina Ministry of Education Key Laboratory of Micro and Nano Systems for AerospaceNorthwestern Polytechnical UniversityXi'anChina Institute for New Energy Materials and Low Carbon TechnologiesSchool of Materials Science and EngineeringTianjin University of TechnologyTianjinChina 

出 版 物：《SmartMat》 (智能材料（英文）)

年 卷 期：2023年第4卷第2期

页      面：88-105页

核心收录：

学科分类：08[工学] 0805[工学-材料科学与工程（可授工学、理学学位）] 080502[工学-材料学] 

基　　金：support from the National Natural Science Foundation of China(No.61801525) the Guangdong Basic and Applied Basic Research Foundation(No.2020A1515010693) the Fundamental Research Funds for the Central Universities,Sun Yat‐sen University(No.22lgqb17) 

主　　题：biomimetic iontronics humidity sensor organohydrogel film self‐healable and breathable wireless respiration monitoring 

摘      要：Stretchable,self‐healing,and breathable skin‐biomimetic‐sensing iontronics play an important role in human physiological signal monitoring and human–computer ***,previous studies have focused on the mimicking of skin tactile sensing(pressure,strain,and temperature),and the development of more functionalities is *** this end,a superior humidity‐sensitive ionic skin is developed based on a self‐healing,stretchable,breathable,and biocompatible polyvinyl alcohol–cellulose nanofibers organohydrogel film,showing a pronounced thickness‐dependent humidity‐sensing *** as‐prepared 62.47‐μm‐thick organohydrogel film exhibits a high response(25,000%)to 98%RH,excellent repeatability,and long‐term stability(120 days).Moreover,this ionic skin has excellent resistance to large mechanical deformation and damage,and the worn‐out material can still retain its humidity‐sensing capabilities after self‐***‐sensing mechanism studies show that the induced response is mainly related to the increase of proton mobility and interfacial charge transport efficiency after water *** superior humidity responsiveness is attributed to the reduced thickness and the increased specific surface area of the organohydrogel film,allowing real‐time recording of physiological ***,by combining with a self‐designed printed circuit board,a continuous and wireless respiration monitoring system is developed,presenting its great potential in wearable and biomedical electronics.