压阻效应
材料科学
压力传感器
灵敏度(控制系统)
炭黑
再现性
电容感应
纳米技术
光电子学
声学
电气工程
复合材料
电子工程
机械工程
工程类
化学
物理
天然橡胶
色谱法
作者
Hui Xia,Dongzhi Zhang,Dongyue Wang,Mingcong Tang,Hao Zhang,Xiaoya Chen,Ruiyuan Mao,Yanhua Ma,Haolin Cai
出处
期刊:IEEE Sensors Journal
[Institute of Electrical and Electronics Engineers]
日期:2022-11-15
卷期号:22 (22): 21561-21568
被引量:7
标识
DOI:10.1109/jsen.2022.3211646
摘要
Flexible pressure sensors with high sensitivity, low cost, lightweight, and convenience are of significance in the field of human movement monitoring and sensing. This article demonstrated a piezoresistive pressure sensor prepared by layer-by-layer (LbL) self-assembly of MXene and carbon black (CB) on a polyurethane (PU) sponge. The electronegativity of MXene and the electropositive of CB enable them to combine more stably. The assembled sensor achieves reliable repeatability (over 3700 cycle testing), high sensitivity (−5.26 kPa $^{-{1}}$ ), wide sensing range (0–240 kPa), acceptable response time (300/300 ms), and good reproducibility under various pressures. MXene and CB greatly increase the electrical conductivity and measurement range of the piezoresistive sensors. The existence of microcracks allows the sensor to sensitively capture micropressure signals, such as human radial artery pulse and respiration. In addition, the large-area conductive framework permits the sensor to maintain high responsiveness over a huge strain range and to distinguish various degrees of human movement. Furthermore, the sensor has shown excellent performance in controlling smart devices through external pressure as a human–machine interface. The pressure sensor based on LbL self-assembled MXene/CB on a PU sponge has potential applications in motion signal detection, artificial intelligence, and other fields.
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