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Journal of Materials Science: Materials in Electronics

Flexible and highly sensitive graphene/carboxymethyl cellulose films for bending sensing

  • 20-07-2020
Published in:
Authors
Ping Liu
Minggan Chen
Canguang Xiong
Xiuhua Cao
Hui Wang
Published in
Journal of Materials Science: Materials in Electronics | Issue 17/2020

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Abstract

High sensitivity is the major desired requirements of strain sensors for wearable electronics applications, especially in health and medical monitoring. A bending sensor attach tightly to skin remains a hot topic considering wide response range and high sensitivity. Herein, a highly sensitive strain sensor based on graphene/carboxymethyl cellulose (GE/CMC) composite film is fabricated through vacuum filtration and chemical reduction. CE/CMC films present an ordered multi-layer structure, which is helpful for signal sensitivity. Owing to the super flexibility of carboxymethyl and the excellent electrical and mechanical properties of GE, the free-standing GE/CMC film reveals high conductivity at 1321.9 S m−1, good response performance at low voltage driving of 1 mV. The bending signal of GE/CMC film was stable, when applying 0–90° forward bending strain. Its sensitivity reaches at 0.83 rad−1, and response time of 90° forward bending strain is less than 190 ms, with a regularly stable bending signal response in 100 cycles bending testing. With such outstanding performances, the GE/CMC film can be expected to be applied in motion signal detection.

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previous article Conductive 3D printing: resistivity dependence upon infill pattern and application to EMI shielding
next article Simultaneous electrochemical preparation and reduction of graphene with low oxygen content and its electrochemical properties for high-performance supercapacitors
Title
Flexible and highly sensitive graphene/carboxymethyl cellulose films for bending sensing
Authors
Ping Liu
Minggan Chen
Canguang Xiong
Xiuhua Cao
Hui Wang
Publication date
20-07-2020
Publisher
Springer US
Published in
Journal of Materials Science: Materials in Electronics / Issue 17/2020
Print ISSN: 0957-4522
Electronic ISSN: 1573-482X
DOI
https://doi.org/10.1007/s10854-020-03966-8
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