title: Ultrasensitive Strain Sensor Produced by Direct Patterning of Liquid Crystals of Graphene Oxide on a Flexible Substrate.
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 nanopositioning 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.
authors.affiliation: Laboratory for Micro Systems, Department of Mechanical and Aerospace Engineering, Monash University , Melbourne 3800, Australia.
authors.forename: M Bulut
authors.initials: MB
authors.lastname: Coskun
authors.affiliation: Nanoscale Science and Engineering Laboratory, Department of Mechanical and Aerospace Engineering, Monash University , Melbourne 3800, Australia.
authors.forename: Abozar
authors.initials: A
authors.lastname: Akbari
authors.affiliation: College of Engineering and Science, Victoria University , Melbourne 3011, Australia.
authors.forename: Daniel T H
authors.initials: DT
authors.lastname: Lai
authors.affiliation: Laboratory for Micro Systems, Department of Mechanical and Aerospace Engineering, Monash University , Melbourne 3800, Australia.
authors.forename: Adrian
authors.initials: A
authors.lastname: Neild
authors.affiliation: Nanoscale Science and Engineering Laboratory, Department of Mechanical and Aerospace Engineering, Monash University , Melbourne 3800, Australia.
authors.forename: Mainak
authors.initials: M
authors.lastname: Majumder
authors.affiliation: Laboratory for Micro Systems, Department of Mechanical and Aerospace Engineering, Monash University , Melbourne 3800, Australia.
authors.forename: Tuncay
authors.initials: T
authors.lastname: Alan
keywords: direct GO patterning; flexible substrate; high sensitivity; rGO; shear alignment; strain gauge