A Novel Thin Shear-Stress Sensor Using Electrolyte as a Conductive Element
A Novel Thin Shear-Stress Sensor Using Electrolyte as a Conductive Element
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DOI：
10.1166/sl.2013.2740
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发表时间：
2013-02-01
期刊：
影响因子：
--
通讯作者：
Yoshida, Yasuhiko
中科院分区：
文献类型：
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作者：
Toyama, Shigeru;Utsumi, Sayoko;Yoshida, Yasuhiko
我们研制了一种新型的薄剪应力传感器，使用电解质作为导电元件。传感器完全由柔性材料组成，例如塑料片、硅橡胶和电解质溶液。电解质被封闭在电池中，该电池包含被四个外围电极包围的中心电极。该传感器被设计成使得这些电极之间的电导通过由细胞变形引起的剪切应力而改变。所制造的传感器的直径（不包括布线图案）和厚度分别为29 mm和2 mm。我们采用乙二醇中的LiCl作为导电元素，并选择测量条件以使对电极的电化学损伤最小化。在中心电极和每个外围电极之间施加频率为5 kHz的160 mV（峰-峰）的正弦电压波，并且所得电流提供传感器响应。新的传感器不仅成功地检测到剪切力的大小，而且还检测到其方向。
We developed a novel thin shear-stress sensor, using electrolyte as a conductive element. The sensor is composed entirely of flexible materials, such as plastic sheets, silicone rubber, and the electrolyte solution. The electrolyte is enclosed in a cell containing a central electrode surrounded by four peripheral electrodes. The sensor is designed so that the conductance between these electrodes is changed by shear stresses resulting from cell deformation. The diameter (excluding the wiring pattern) and the thickness of the fabricated sensor are 29 mm and 2 mm, respectively. We employed LiCl in ethylene glycol as the conductive element, and the measurement conditions were chosen to minimize electrochemical damage to the electrodes. A sinusoidal voltage wave of 160 mV (peak-to-peak) at a frequency of 5 kHz was applied between the center electrode and each peripheral electrode, and the resulting current provided the sensor response. The new sensor successfully detected not only the magnitude of the shear force, but also its direction.