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Materials 2018, 11(5), 768; https://doi.org/10.3390/ma11050768

Textile-Based, Interdigital, Capacitive, Soft-Strain Sensor for Wearable Applications

Faculty of Textile Technologies and Design, Istanbul Technical University, İnönü Caddesi, No. 65 Gümüssuyu, 34437 Beyoğlu/Istanbul, Turkey
Received: 6 March 2018 / Revised: 29 March 2018 / Accepted: 3 April 2018 / Published: 10 May 2018
(This article belongs to the Special Issue Advanced Strain and Deformation Sensing Materials and Applications)
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Abstract

The electronic textile area has gained considerable attention due to its implementation of wearable devices, and soft sensors are the main components of these systems. In this paper, a new sensor design is presented to create stretchable, capacitance-based strain sensors for human motion tracking. This involves the use of stretchable, conductive-knit fabric within the silicone elastomer matrix, as interdigitated electrodes. While conductive fabric creates a secure conductive network for electrodes, a silicone-based matrix provides encapsulation and dimensional-stability to the structure. During the benchtop characterization, sensors show linear output, i.e., R2 = 0.997, with high response time, i.e., 50 ms, and high resolution, i.e., 1.36%. Finally, movement of the knee joint during the different scenarios was successfully recorded. View Full-Text
Keywords: wearable electronics; soft strain sensors; capacitive sensors; electronic textiles; conductive fabrics; silicone elastomer wearable electronics; soft strain sensors; capacitive sensors; electronic textiles; conductive fabrics; silicone elastomer
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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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Atalay, O. Textile-Based, Interdigital, Capacitive, Soft-Strain Sensor for Wearable Applications. Materials 2018, 11, 768.

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