This paper describes a flexible pressure sensor based on polypyrrole(PPy)-Cotton composites, in which PPy is grown on cellulose fibers of cotton pads via an in situ vapor growth method, which is beneficial to the homogeneity of the composites. The resulting devices exhibits rapid response and recovery speed, the response and recovery times are 220 ms and 240 ms, respectively. The optimal PPy-Cotton Pads (PCPs) sensor shows low detection limit, which is about 50 Pa. At the same time, it exhibits excellent durability in the measurement of repeated loading-unloading pressure over 1000 cycles. The resultant sensor can be attached on different positions of body and applied to recording physiological signals, such as wrist pulse, vocal cord vibration, respiration and eyes blinking. Finally, a 4 × 4 pressure sensor array shows that the PCPs sensor has capability in pressure distribution detection and represents great potential in the fields of wearable electronics and biomedical devices.

中文翻译：

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基于导电聚合物涂层织物的柔性压阻传感器在人体生理信号监测中的应用

本文描述了基于聚吡咯（PPY）的柔性压力传感器-棉复合材料，其中聚吡咯上生长的棉纤维垫的纤维素纤维通过一个原位气相生长法，有利于复合材料的均匀性。所得器件显示出快速的响应和恢复速度，响应和恢复时间分别为220 ms和240 ms。最佳的PPy-Cotton Pads（PCPs）传感器显示出较低的检测极限，约为50 Pa。同时，在测量1000次以上的反复加载和卸载压力时，它具有出色的耐久性。最终的传感器可以连接到身体的不同位置，并用于记录生理信号，例如手腕脉搏，声带振动，呼吸和眨眼。最后，一个4×4压力传感器阵列表明PCPs传感器具有压力分布检测功能，在可穿戴电子设备和生物医学设备领域具有巨大潜力。