Calotropis gigantea Fiber‑Based Sensitivity‑Tunable Strain Sensors with Insensitive Response to Wearable Microclimate Changes  

作　　者：Junze Zhang Jing Liu Zeyu Zhao Weiwei Sun Gaojuan Zhao Jingge Liu Jianchu Xu Yuling Li Zekun Liu Yi Li Gang Li 

机构地区：[1]National Engineering Laboratory for Modern Silk,College of Textile and Clothing Engineering,Soochow University,Suzhou 215123,China [2]Jiangsu Advanced Textile Engineering Technology Center,Nantong 226007,China [3]Honghe Center for Mountain Futures,Kunming Institute of Botany,Chinese Academy of Sciences,Honghe County,Yunnan 654412,China [4]Key Laboratory of Textile Science and Technology,Ministry of Education,Donghua University,Shanghai 201620,China [5]Department of Materials,University of Manchester,Oxford Road,Manchester M139PL,UK [6]Botnar Research Center,University of Oxford,Old Road,Headington OX37LD,Oxford,UK

出　　处：《Advanced Fiber Materials》2023年第4期1378-1391,共14页先进纤维材料（英文）

基　　金：National Key R&D Program of China(2021YFE0111100);Ministry of Science and Technology of the People’s Republic of China(KY202201002);Jiangsu Provincial Department of Science and Technology(BZ2022017);Shanghai Science and Technology Committee(21015800600);We would like to thank the China National Textile and Apparel Council(J202002);Jiangsu Advanced Textile Engineering Technology Center(XJFZ/2021/7),projects with number 2021-fx010104 for their support.

摘　　要：Wearable tensile strain sensors have attracted substantial research interest due to their great potential in applications for the real-time detection of human motion and health through the construction of body-sensing networks.Conventional devices,however,are constantly demonstrated in non-real world scenarios,where changes in body temperature and humidity are ignored,which results in questionable sensing accuracy and reliability in practical applications.In this work,a fabric-like strain sensor is developed by fabricating graphene-modified Calotropis gigantea yarn and elastic yarn(i.e.Spandex)into an independently crossed structure,enabling the sensor with tunable sensitivity by directly altering the sensor width.The sensor possesses excellent breathability,allowing water vapor generated by body skin to be discharged into the environment(the water evaporation rate is approximately 2.03 kg m^(-2) h^(-1))and creating a pleasing microenvironment between the sensor and the skin by avoiding the hindering of perspiration release.More importantly,the sensor is shown to have a sensing stability towards changes in temperature and humidity,implementing sensing reliability against complex and changeable wearable microclimate.By wearing the sensor at various locations of the human body,a full-range body area sensing network for monitoring various body movements and vital signs,such as speaking,coughing,breathing and walking,is successfully dem-onstrated.It provides a new route for achieving wearing-comfortable,high-performance and sensing-reliable strain sensors.

关 键 词：Wearable strain sensor Functionalized Calotropis gigantea fiber Wearable microclimate Graphene coating Tunable sensitivity 

分 类 号：TP212[自动化与计算机技术—检测技术与自动化装置]