3D interlocked all-textile structured triboelectric pressure sensor for accurately measuring epidermal pulse waves in amphibious environments  

作　　者：Shaobo Si Chenchen Sun Yufen Wu Jingjing Li Han Wang Yinggang Lin Jin Yang Zhong Lin Wang 

机构地区：[1]Department of Optoelectronic Engineering,Key Laboratory of Optoelectronic Technology and Systems Ministry of Education,Chongqing University,Chongqing 400044,China [2]College of Physics and Electronic Engineering,Chongqing Normal University,Chongqing 401331,China [3]Beijing Institute of Nanoenergy and Nanosystems,Chinese Academy of Sciences,Beijing 100083,China [4]School of Materials Science and Engineering,Georgia Institute of Technology,Atlanta,GA 30332,USA

出　　处：《Nano Research》2024年第3期1923-1932,共10页纳米研究（英文版）

基　　金：supported by the National Key Research and Development Program of China(No.2021YFA1201600);the Natural Science Foundation Projects of Chongqing(No.cstc2022ycjh-bgzxm0206);the Natural Science Foundation of Innovative Research Groups(No.cstc2020jcyj-cxttX0005).

摘　　要：The performance degradation and even damage of the e-textiles caused by sweat,water,or submersion during all-weather health monitoring are the main reasons that e-textiles have not been commercialized and routinized so far.Herein,we developed an amphibious,high-performance,air-permeable,and comfortable all-textile triboelectric sensor for continuous and precise measurement of epidermal pulse waves during full-day activities.Based on the principle of preparing gas by acid-base neutralization reaction,a one-piece preparation process of amphibious conductive yarn(ACY)with densely porous structures is proposed.An innovative three-dimensional(3D)interlocking fabric knitted from ACYs(0.6 mm in diameter)and polytetrafluoroethylene yarns exhibit high sensitivity(0.433 V·kPa^(-1)),wide bandwidth(up to 10 Hz),and stability(>30,000 cycles).With these benefits,98.8%agreement was achieved between wrist pulse waves acquired by the sensor and a high-precision laser vibrometer.Furthermore,the polytetrafluoroethylene yarn with good compression resilience provides sufficient mechanical support for the contact separation of the ACYs.Meanwhile,the unique skeletonized design of the 3D interlocking structure can effectively relieve the water pressure on the sensor surface to obtain stable and accurate pulse waves(underwater depth of 5 cm).This achievement represents an important step in improving the practicality of e-textiles and early diagnosis of cardiovascular diseases.

关 键 词：triboelectric pressure sensor amphibious fabric interlocking fabric pulse wave measurement one-piece preparation method 

分 类 号：TP212[自动化与计算机技术—检测技术与自动化装置]