A facile approach to fabricate highly sensitive, flexible strain sensor based on elastomeric/graphene platelet composite film

Qingshi Meng, Zhiwen Liu, Hanhan Sen, Rui Cai

Research output: Contribution to journalArticle

5 Citations (Scopus)

Abstract

This work developed a facile approach to fabricate highly sensitive and flexible polyurethane/graphene platelets composite film for wearable strain sensor. The composite film was fabricated via layer-by-layer laminating method which is simple and cost-effective; it exhibited outstanding electrical conductivity of 1430 ± 50 S/cm and high sensitivity to strain (the gauge factor is up to 150). In the sensor application test, the flexible strain sensor achieves real-time monitoring accurately for five bio-signals such as pulse movement, finger movement, and cheek movement giving a great potential as wearable-sensing device. In addition, the developed strain sensor shows response to pressure and temperature in a certain region. A multifaceted comparison between reported flexible strain sensors and our strain sensor was made highlighting the advantages of the current work in terms of (1) high sensitivity (gauge factor) and flexibility, (2) facile approach of fabrication, and (3) accurate monitoring for body motions.

Original languageEnglish
Pages (from-to)10856–10870
Number of pages15
JournalJournal of Materials Science
Volume54
Issue number15
Early online date29 Apr 2019
DOIs
Publication statusPublished - Aug 2019

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Keywords

  • Graphene;
  • Composite films;
  • Electrical conductivity;
  • Strain sensor;

ASJC Scopus subject areas

  • Mechanics of Materials
  • Mechanical Engineering
  • Materials Science(all)

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