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Polyaniline Nanofiber Wrapped Fabric for High Performance Flexible Pressure Sensors

1
Research Institute for New Materials Technology, Chongqing University of Arts and Sciences, Chongqing 402160, China
2
State Key Laboratory of Electronic Thin Films and Integrated Devices, School of Optoelectronic Science and Engineering, University of Electronic Science and Technology of China (UESTC), Chengdu 610054, China
3
School of Chemistry and Chemical Engineering, Liaocheng University, Liaocheng 252059, China
*
Authors to whom correspondence should be addressed.
Polymers 2019, 11(7), 1120; https://doi.org/10.3390/polym11071120
Received: 13 May 2019 / Revised: 19 June 2019 / Accepted: 19 June 2019 / Published: 2 July 2019
(This article belongs to the Special Issue Smart Textile)
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PDF [4305 KB, uploaded 2 July 2019]
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Abstract

The rational design of high-performance flexible pressure sensors with both high sensitivity and wide linear range attracts great attention because of their potential applications in wearable electronics and human-machine interfaces. Here, polyaniline nanofiber wrapped nonwoven fabric was used as the active material to construct high performance, flexible, all fabric pressure sensors with a bottom interdigitated textile electrode. Due to the unique hierarchical structures, large surface roughness of the polyaniline coated fabric and high conductivity of the interdigitated textile electrodes, the obtained pressure sensor shows superior performance, including ultrahigh sensitivity of 46.48 kPa−1 in a wide linear range (<4.5 kPa), rapid response/relaxation time (7/16 ms) and low detection limit (0.46 Pa). Based on these merits, the practical applications in monitoring human physiological signals and detecting spatial distribution of subtle pressure are demonstrated, showing its potential for health monitoring as wearable electronics. View Full-Text
Keywords: polyaniline; flexible pressure sensors; smart textile; wearable electronics polyaniline; flexible pressure sensors; smart textile; wearable electronics
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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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Liu, K.; Zhou, Z.; Yan, X.; Meng, X.; Tang, H.; Qu, K.; Gao, Y.; Li, Y.; Yu, J.; Li, L. Polyaniline Nanofiber Wrapped Fabric for High Performance Flexible Pressure Sensors. Polymers 2019, 11, 1120.

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