Bioinspired All‑Fibrous Directional Moisture‑Wicking Electronic Skins for Biomechanical Energy Harvesting and All‑Range Health Sensing  

作　　者：Chuanwei Zhi Shuo Shi Shuai Zhang Yifan Si Jieqiong Yang Shuo Meng Bin Fei Jinlian Hu 

机构地区：[1]Department of Biomedical Engineering,City University of Hong Kong,Hong Kong S.A.R 999077,China [2]Institute of Textiles and Clothing,The Hong Kong Polytechnic University,Hong Kong S.A.R 999077,China [3]City University of Hong Kong Shenzhen Research Institute,Shenzhen 518057,People’s Republic of China

出　　处：《Nano-Micro Letters》2023年第4期277-293,共17页纳微快报（英文版）

基　　金：support from the Contract Research(“Development of Breathable Fabrics with Nano-Electrospun Membrane,”CityU ref.:9231419);the National Natural Science Foundation of China(“Study of Multi-Responsive Shape Memory Polyurethane Nanocomposites Inspired by Natural Fibers,”Grant No.51673162);Startup Grant of CityU(“Laboratory of Wearable Materials for Healthcare,”Grant No.9380116);National Natural Science Foundation of China,Grant No.52073241.

摘　　要：Electronic skins can monitor minute physiological signal variations in the human skins and represent the body’s state,showing an emerging trend for alternative medical diagnostics and human-machine interfaces.In this study,we designed a bioinspired directional moisture-wicking electronic skin(DMWES)based on the construction of heterogeneous fibrous membranes and the conductive MXene/CNTs electrospraying layer.Unidirectional moisture transfer was successfully realized by surface energy gradient and push-pull effect via the design of distinct hydrophobic-hydrophilic difference,which can spontaneously absorb sweat from the skin.The DMWES membrane showed excellent comprehensive pressure sensing performance,high sensitivity(maximum sensitivity of 548.09 kPa^(−1)),wide linear range,rapid response and recovery time.In addition,the single-electrode triboelectric nanogenerator based on the DMWES can deliver a high areal power density of 21.6μW m^(−2) and good cycling stability in high pressure energy harvesting.Moreover,the superior pressure sensing and triboelectric performance enabled the DMWES for all-range healthcare sensing,including accurate pulse monitoring,voice recognition,and gait recognition.This work will help to boost the development of the next-generation breathable electronic skins in the applications of AI,human-machine interaction,and soft robots.

关 键 词：BIOINSPIRED Electrospinning Electronic skin Directional moisture wicking MXene 

分 类 号：TB3[一般工业技术—材料科学与工程]