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Sensors 2017, 17(3), 574;

Characterization of Textile-Insulated Capacitive Biosensors

Department of Electrical, Electronic and Systems Engineering, Faculty of Engineering and Built Environment, Universiti Kebangsaan Malaysia, Bangi, 43600 Selangor Darul Ehsan, Malaysia
Author to whom correspondence should be addressed.
Academic Editor: Meyya Meyyappan
Received: 4 January 2017 / Revised: 2 March 2017 / Accepted: 9 March 2017 / Published: 12 March 2017
(This article belongs to the Section Biosensors)
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Capacitive biosensors are an emerging technology revolutionizing wearable sensing systems and personal healthcare devices. They are capable of continuously measuring bioelectrical signals from the human body while utilizing textiles as an insulator. Different textile types have their own unique properties that alter skin-electrode capacitance and the performance of capacitive biosensors. This paper aims to identify the best textile insulator to be used with capacitive biosensors by analysing the characteristics of 6 types of common textile materials (cotton, linen, rayon, nylon, polyester, and PVC-textile) while evaluating their impact on the performance of a capacitive biosensor. A textile-insulated capacitive (TEX-C) biosensor was developed and validated on 3 subjects. Experimental results revealed that higher skin-electrode capacitance of a TEX-C biosensor yields a lower noise floor and better signal quality. Natural fabric such as cotton and linen were the two best insulating materials to integrate with a capacitive biosensor. They yielded the lowest noise floor of 2 mV and achieved consistent electromyography (EMG) signals measurements throughout the performance test. View Full-Text
Keywords: biosensor; capacitive; textile; electromyography biosensor; capacitive; textile; electromyography

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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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Ng, C.L.; Reaz, M.B.I. Characterization of Textile-Insulated Capacitive Biosensors. Sensors 2017, 17, 574.

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