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A Flexible Pressure Sensor Based on Bimaterial Conductivity-Conversion Mechanism

Flexible pressure sensor with excellent sensing performance and wearability is a major research focus for wearable electronic devices. In this study, polyporrole (PPy) wrapped cotton pads and silver coated wrinkle papers are stacked together to construct a novel piezoresistive sensor, and a bimateri...

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Published in:	IEEE electron device letters 2021-12, Vol.42 (12), p.1857-1860
Main Authors:	Lin, Xiuzhu, Li, Fan, Bing, Yu, Zhao, Hongran, Zhang, Tong
Format:	Article
Language:	English
Subjects:	Adhesive strength bimaterial conductivity Conversion Cotton Electronic devices Monitoring Pressure sensor Pressure sensors Resistance Sensitivity Sensors Signal monitoring ultra-low detection limit Wearable computers wearable electronics Wearable technology
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creator	Lin, Xiuzhu Li, Fan Bing, Yu Zhao, Hongran Zhang, Tong
description	Flexible pressure sensor with excellent sensing performance and wearability is a major research focus for wearable electronic devices. In this study, polyporrole (PPy) wrapped cotton pads and silver coated wrinkle papers are stacked together to construct a novel piezoresistive sensor, and a bimaterial conductivity-conversion mechanism is presented. The PPy-cotton pads are prepared by an in-situ vapor growth process to ensure the strong adhesion and uniform distribution of PPy, which is beneficial for the stability of pressure sensors. The optimal flexible pressure sensor exhibits fast response speed (about 50 ms) and ultra-low detection limit (0.09 Pa). The potential applications of sensors as wearable e-skin for human activity and physiological signals monitoring are also demonstrated.
doi_str_mv	10.1109/LED.2021.3118062
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subjects	Adhesive strength bimaterial conductivity Conversion Cotton Electronic devices Monitoring Pressure sensor Pressure sensors Resistance Sensitivity Sensors Signal monitoring ultra-low detection limit Wearable computers wearable electronics Wearable technology
title	A Flexible Pressure Sensor Based on Bimaterial Conductivity-Conversion Mechanism
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