A new strategy for fabricating a stacked flexible capacitive sensor

Yuanxiang Zhu, Daming Wu, Haohua Jiang, Weile Zhang, Lihao Shen, Jingyao Sun, Jian Zhuang, Hong Xu, Yao Huang
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Abstract

Currently, flexible capacitive sensors have a wide range of application scenarios in the field of wearable electronic devices. In order to detect more subtle joint movements of the human body, a method of fabricating stacked capacitive sensors is demonstrated. An ultrathin dielectric elastomer film of about 110 μm by the “secondary calendering” method was prepared. The shape of the electrode layers was designed, printed the electrode materials on the dielectric elastomer film by screen-printing, realized the stacked-layer technology, and connected each sensor unit in parallel by the electrode columns formed inside. A 12-layer flexible capacitive sensor with an initial capacitance of 10.2nF, good resolution (1% strain), high sensitivity (1.09) and stability under 10,000 cycles is fabricated. The sensor fabricated in this paper can recognize the motion at various joints of the human body, such as elbow and knee joints. This paper provides a new method for fabrication of stacked flexible capacitive sensors, which opens up new applications in flexible sensors, wearable electronic devices and human-computer interaction.

制造堆叠式柔性电容传感器的新策略
目前,柔性电容传感器在可穿戴电子设备领域有着广泛的应用场景。为了检测人体更细微的关节运动,我们展示了一种制造叠层电容式传感器的方法。通过 "二次压延 "法制备了约 110 μm 的超薄介电弹性体薄膜。设计了电极层的形状,并通过丝网印刷将电极材料印在介电弹性体薄膜上,实现了叠层技术,并通过内部形成的电极柱将每个传感器单元并联起来。最终制作出了一个 12 层的柔性电容传感器,其初始电容为 10.2nF,具有良好的分辨率(1% 应变)、高灵敏度(1.09)和 10,000 次循环下的稳定性。本文制作的传感器可以识别人体各个关节(如肘关节和膝关节)的运动。本文提供了一种制造堆叠式柔性电容传感器的新方法,为柔性传感器、可穿戴电子设备和人机交互领域开辟了新的应用前景。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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