A highly stretchable and breathable self-powered dual-parameter sensor for decoupled temperature and strain sensing

被引:13
作者
Wen, Ningxuan [1 ]
Guan, Xin [4 ]
Fan, Zeng [1 ]
Guo, Yuan [1 ]
Cong, Tianze [1 ]
Huang, Hui [1 ]
Li, Chengwei [1 ]
Zhang, Jianwei [2 ]
Lei, Bowen [2 ]
Yang, Rongli [3 ]
Liu, Lanxin [3 ]
Pan, Lujun [1 ]
机构
[1] Dalian Univ Technol, Sch Phys, Dalian 116024, Liaoning, Peoples R China
[2] Natl Univ Def Technol, Coll Aerosp Sci & Engn, Changsha 410003, Hunan, Peoples R China
[3] Dalian Univ Technol, Dalian Municipal Cent Hosp, Dept Crit Care Med, Dalian 116033, Liaoning, Peoples R China
[4] Natl Univ Def Technol, Int Studies Coll, Nanjing 210012, Jiangsu, Peoples R China
基金
中国国家自然科学基金; 中国博士后科学基金;
关键词
Self-powered sensor; Cross-talk free; Thermoelectric; Dual-parameter sensing; Wearable electronics; ELECTRONIC SKIN;
D O I
10.1016/j.orgel.2022.106723
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
Flexible multifunctional sensors with self-powered operating modes are in great demand in long-term wearable applications such as health and structural monitoring, biomedical monitoring, Internet of Things (IoT), and artificial intelligence. However, the currently developed self-powered multifunctional sensors still face problems including high manufacturing cost, complex structure, difficult signal decoupling and unstable power supply. Herein, a crosstalk-free self-powered strain and temperature sensing (SPST) sensor was developed by decorating a thermoplastic polyurethane (TPU) fibrous membrane with carbon black particles (CBPs), carbon nanotubes (CNTs) and poly (3,4-ethylenedioxythiophene):poly (styrenesulfonate) (PEDOT:PSS) through a simple soaking method. For this sensor, CBPs/CNTs and PEDOT:PSS were used as strain and temperature sensing elements, respectively. By utilizing the piezoresistive effect from the CBPs/CNT conductive network and thermoelectric effect from the PEDOT:PSS network, the SPST sensor can simultaneously detect and convert strain and tem-perature stimuli into independent resistance and voltage signals, respectively. The sensor can be further driven by the thermovoltage generated under the temperature difference between human skin and the surrounding environment to achieve self-powered temperature and strain sensing. The sensor maintained a broad strain detection range of 0-140%, and exhibited a temperature resolution of 0.116 K with a fast response time of 2.3 s. As a wearable electronic device that can be directly attached to the skin, the SPST sensor enable precise detection of tiny human motions in a self-powered mode. This work may provide a new proposal to produce a self-powered, stretchable and breathable multi-functional sensor, which is suitable for wearable devices in personal electronic fields.
引用
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页数:8
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