PDMS-based two-axis inclinometer with a 360-degree measuring range

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• 作者：Wu BinAuthor Vitae ; Md. Mahabub HossainAuthor Vitae ; Seong Ho Kong ; ^{shkong@knu.ac.kr" class="auth_mail" title="E-mail the corresponding author}Author Vitae
• 关键词：Tilt sensor ; Electrolytic sensor ; PDMS cavity ; CNT-PDMS composite ; Inclinometer
• 刊名：Sensors and Actuators A: Physical
• 出版年：2016
• 出版时间：1 March 2016
• 年：2016
• 卷：239
• 期：Complete
• 页码：54-60
• 全文大小：2289 K

文摘

In this study, we fabricated an electrolytic tilt sensor based on a unique poly(dimethylsiloxane) (PDMS) structure, which enables the successful implementation of a 360° dual-axis inclination angle measurement. The fabricated electrolytic tilt sensor consists of two parts: symmetric hemispherical PDMS cavities with detecting electrodes, and a wire-shaped carbon nanotube (CNT)-PDMS composite common electrode. The proposed electrolytic tilt sensor overcomes the limitations that have been previously reported. Specifically, it not only expands the operating range to 360°, but it also significantly increases the device response and sensitivity to 0.17 s and 22 mV_rms/degree, respectively. We verified the stability of the proposed sensor and obtained a standard deviation (σ) of approximately 0.014. Experimental results confirm that the device is sufficient for a variety of tilt angle measurement applications by providing a measurement option that is efficient, cost effective, and does not require complex fabrication processes.