Huang Ying, Fang Ding, Wu Can, Wang Weihua, Guo Xiaohui, Liu Ping
School of Electronic Science and Applied Physics, Hefei University of Technology, Hefei 230009, People's Republic of China.
Rev Sci Instrum. 2016 Jun;87(6):065007. doi: 10.1063/1.4954199.
Human skin contains multiple receptors and is able to sense various stimuli such as temperature, touch, pressure, and deformation, with high sensitivity and resolution. The development of skin-like sensors capable of sensing these stimuli is of great importance for various applications such as robots, touch detection, temperature monitoring, and strain gauges. Great efforts have been made to develop high performance touch sensor and pressure sensor. Compared with general sensor, the touch-pressure sensor which is reported in this paper not only can measure large pressure but also has a high resolution in the small range so that it can feel slight touch. The sensor has a vertical structure. The upper layer is made of silicone rubber as the capacitive layer and the lower layer employs multiwall carbon nanotubes and carbon black filled silicone rubber as the resistive layer. The electrodes are made by conductive silver adhesives. In addition, the electrodes are connected to the pads on the top surface of the flexible printed circuit board by enamelled wires which made it easier to fabricate sensor array. The resolution of the touch-pressure sensor in the range of 0-10 N and 10-100 N are 0.1 N and 1 N, respectively. The experimental data of the sensor are sent by ZigBee wireless technology which reduces the complexity of the wiring and provides a convenient way to apply and maintain the sensor array.
人类皮肤含有多种感受器，能够以高灵敏度和分辨率感知各种刺激，如温度、触摸、压力和变形。开发能够感知这些刺激的类皮肤传感器对于机器人、触摸检测、温度监测和应变仪等各种应用具有重要意义。人们已经付出巨大努力来开发高性能的触摸传感器和压力传感器。与普通传感器相比，本文报道的触摸 - 压力传感器不仅能够测量较大压力，而且在小范围内具有高分辨率，从而能够感知轻微触摸。该传感器具有垂直结构。上层由硅橡胶制成作为电容层，下层采用多壁碳纳米管和炭黑填充的硅橡胶作为电阻层。电极由导电银胶制成。此外，电极通过漆包线连接到柔性印刷电路板顶面上的焊盘，这使得更容易制造传感器阵列。触摸 - 压力传感器在0 - 10 N和10 - 100 N范围内的分辨率分别为0.1 N和1 N。传感器的实验数据通过ZigBee无线技术发送，这降低了布线的复杂性，并为应用和维护传感器阵列提供了一种便捷方式。
