Ultrasensitive Strain Sensor Produced by Direct Patterning of Liquid Crystals of Graphene Oxide on a Flexible Substrate
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- 作者：M. Bulut Coskun ; Abozar Akbari ; Daniel T. H. Lai ; Adrian Neild ; Mainak Majumder ; Tuncay Alan
- 刊名：ACS Applied Materials & Interfaces
- 出版年：2016
- 出版时间：August 31, 2016
- 年：2016
- 卷：8
- 期：34
- 页码：22501-22505
- 全文大小：364K
- 年卷期：0
- ISSN：1944-8252
文摘
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.