Ultrasensitive strain sensor produced by direct patterning of liquid crystals of graphene oxide on a flexible substrate

M. Bulut Coskun, Abozar Akbari, Daniel T. H. Lai, Adrian Neild, Mainak Majumder, Tuncay Alan

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39 Citations (Scopus)

Abstract

Ultrasensitive flexible strain sensors were developed through the combination of shear alignment of a high concentration graphene oxide (GO) dispersion with fast and precise patterning of multiple rectangular features on a flexible substrate. Resistive changes in the reduced GO films were investigated under various uniaxial strain cycles ranging from 0.025 to 2%, controlled with a motorized anopositioning stage. The devices uniquely combine a very small detection limit (0.025%) and a high gauge factor with a rapid fabrication process conducive to batch production.
Original languageEnglish
Pages (from-to)22501-22505
Number of pages5
JournalACS Applied Materials & Interfaces
Volume8
Issue number34
DOIs
Publication statusPublished - 4 Sep 2016

Keywords

  • Strain gauge
  • rGO
  • Direct GO patterning
  • Shear alignment
  • High sensitivity
  • Flexible substrate

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