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Experimental Characterization of an Ionically Conductive Fluid Based High Flexibility Strain Sensor

Tran, Nhu Chi and Tran, Thi Thuy Ha and Tran, Hoai An and Ta, Hoang Nguyen and Nguyen, Thi Hoai and Nguyen, Ngoc An and Chu, Duc Trinh and Dau, Thanh Van and Bui, Thanh Tung (2018) Experimental Characterization of an Ionically Conductive Fluid Based High Flexibility Strain Sensor. In: International Conference on Engineering Research and Applications, 01-02 December 2018, Thai Nguyen, Vietnam.

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In this study, a high flexibility strain sensor based on ionic liquid, which is a mixture of aqueous sodium chloride and glycerin pump in siliconen tube, is developed. Gold-coated electrodes are inserted into both ends of the tube to make good contact with the liquid. When the silicone tube is affected by an external force, its geometry and electrical characteristics of the mixture inside the tube are changed, resulting in the change in the sensor resistance. The proposed sensor was fabricated and experimentally characterized. The 4-point resistance measurement based on alternating Howland current source was applied to the sensor for measuring the change in resistance of the sensor. A circuit board with PIC16F877A microcontroller is also developed for data acquisition and result display. Experimental results show that the sensor is highly flexible, i.e., can suffer from a stretch up to 50% with stable gauge factor in the range of 2.1 to 2.47. With its simplexes and high-flexibility, the proposed sensor has high potential to be applied to wearable and portable applications

Item Type: Conference or Workshop Item (Paper)
Subjects: Electronics and Communications
Electronics and Communications > Electronics and Computer Engineering
Engineering Mechanics
Divisions: Faculty of Electronics and Telecommunications (FET)
Depositing User: Trần Như Chí
Date Deposited: 14 Dec 2018 07:58
Last Modified: 14 Dec 2018 07:58

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