电容感应
材料科学
电极
压力传感器
制作
可穿戴计算机
灵敏度(控制系统)
光电子学
触觉传感器
数码产品
电气工程
计算机科学
电子工程
工程类
嵌入式系统
机械工程
医学
机器人
病理
物理化学
人工智能
化学
替代医学
作者
Ruzhan Qin,Mingjun Hu,Xin Li,Te Liang,Haoyi Tan,Jinzhang Liu,Guangcun Shan
标识
DOI:10.1038/s41378-021-00327-1
摘要
Abstract The development of flexible capacitive pressure sensors has wide application prospects in the fields of electronic skin and intelligent wearable electronic devices, but it is still a great challenge to fabricate capacitive sensors with high sensitivity. Few reports have considered the use of interdigital electrode structures to improve the sensitivity of capacitive pressure sensors. In this work, a new strategy for the fabrication of a high-performance capacitive flexible pressure sensor based on MXene/polyvinylpyrrolidone (PVP) by an interdigital electrode is reported. By increasing the number of interdigital electrodes and selecting the appropriate dielectric layer, the sensitivity of the capacitive sensor can be improved. The capacitive sensor based on MXene/PVP here has a high sensitivity (~1.25 kPa −1 ), low detection limit (~0.6 Pa), wide sensing range (up to 294 kPa), fast response and recovery times (~30/15 ms) and mechanical stability of 10000 cycles. The presented sensor here can be used for various pressure detection applications, such as finger pressing, wrist pulse measuring, breathing, swallowing and speech recognition. This work provides a new method of using interdigital electrodes to fabricate a highly sensitive capacitive sensor with very promising application prospects in flexible sensors and wearable electronics.
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