High sensitivity and flexible fabric strain sensor based on electrochemical graphene

Hsin Jou Wang, Tun Yi Cheng, Cheng Chun Huang, Ching Yuan Su, Ching Liang Dai, Yao Chuan Tsai

Research output: Contribution to journalArticlepeer-review

Abstract

In this study, electrochemical graphene (ECG) was chosen to be attached to a polyester fabric with a knitted structure as a flexible fabric strain sensor through a cloth dyeing method. According to scanning electron microscopy observation and Raman scattering spectroscopy measurements, ECG was successfully attached to the fabric structure. The electromechanical performance and strain sensing properties of the graphene-based flexible strain sensor were evaluated. The resistance change and gauge factor of different ECG attached as a fabric strain sensor were quantified. The gauge factor of the fabric strain sensor with less ECG is greater than that of the fabric strain sensor with more ECG. The high gauge factor of 47 was achieved in a strain range from 0% to 2%. The fabricated strain sensor exhibited high sensitivity, fast response time and good repeatability. The fabricated ECG fabric strain sensor could be used to detect tiny physiological signals and human motion.

Original languageEnglish
Article numberSCCD04
JournalJapanese Journal of Applied Physics
Volume60
Issue numberSC
DOIs
StatePublished - Jun 2021

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