电容感应
灵敏度(控制系统)
电容
衰减
压力传感器
信号(编程语言)
压缩(物理)
材料科学
电极
折叠(DSP实现)
声学
电子工程
计算机科学
工程类
电气工程
物理
机械工程
光学
复合材料
量子力学
程序设计语言
作者
Hong Sun,Yuxuan Sun,Chayut Buranabunwong,Xingxiang Li,Shiwu Zhang,Yong Chen,Mujun Li
标识
DOI:10.1016/j.cej.2023.143514
摘要
Flexible capacitive pressure sensors have been widely used in applications ranging from healthcare monitoring to human − machine interaction. However, it remains a huge challenge to overcome the sensitivity attenuation with increasing pressure, as well as maintain sensing performance at high stretching. Herein, inspired by the Miura-ori structure, a Symmetrical Miura-ori Capacitive sensor (SMC sensor) is proposed to realize a positive correlation between sensitivity and pressure within a tunable pressure range, which can be adjusted by modifying the SMC sensor structures. The capacitance is determined through the synergistic effect of distance and opposite area between electrodes conformal to the Miura-ori structure. The SMC sensor exhibits a maximum sensitivity of 0.648 kPa−1 and high stability over 1000 cycles of compression and stretching. Furthermore, the special folding model of the Miura-ori structure avoids shape attenuation in sensitivity during stretching and detects both contractive and stretched strains. These unique characteristics make the proposed sensor promising for general physiological signal monitoring, even with high stretching and environmental adaptability.
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