Highly sensitive wearable sensor based on a flexible multi-layer graphene film antenna

Danli Tang; Qianlong Wang; Zhe Wang; Quantao Liu; Bin Zhang; Daping He; Zhi Wu; Shichun Mu

doi:10.1016/j.scib.2018.03.014

Highly sensitive wearable sensor based on a flexible multi-layer graphene film antenna

Sci Bull (Beijing). 2018 May 15;63(9):574-579. doi: 10.1016/j.scib.2018.03.014. Epub 2018 Apr 3.

Authors

Danli Tang¹, Qianlong Wang², Zhe Wang³, Quantao Liu⁴, Bin Zhang¹, Daping He⁵, Zhi Wu¹, Shichun Mu³

Affiliations

¹ Hubei Engineering Research Center of RF-Microwave Technology and Application, School of Science, Wuhan University of Technology, Wuhan 430070, China.
² Shenzhen Institute of Advanced Graphene Application and Technology (SIAGAT), Shenzhen 518106, China.
³ State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology, Wuhan 430070, China.
⁴ State Key Laboratory of Silicate Materials for Architectures, Wuhan University of Technology, Wuhan 430070, China.
⁵ Hubei Engineering Research Center of RF-Microwave Technology and Application, School of Science, Wuhan University of Technology, Wuhan 430070, China; State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology, Wuhan 430070, China. Electronic address: hedaping@whut.edu.cn.

PMID: 36658844
DOI: 10.1016/j.scib.2018.03.014

Abstract

The use of advanced carbon nanomaterials for flexible antenna sensors has attracted great attention due to their outstanding electromechanical properties. However, carbon nanomaterial based composites have yet to overcome drawbacks, such as low conductivity and toughness. In this work, a flexible multi-layer graphene film (FGF) with a high conductivity of 10⁶ S/m for antenna based wearable sensors is investigated. A 1.63 GHz FGF antenna sensor exhibits significantly high strain sensitivity of 9.8 for compressive bending and 9.36 for tensile bending, which is super than the copper antenna sensor (5.39 for compressive bending and 4.05 for tensile bending). Moreover, the FGF antenna sensor shows very good mechanical flexibility, reversible deformability and structure stability, and thus is well suited for applications like wearable devices and wireless strain sensing.

Keywords: Antenna based sensor; Flexibility; High performance; Multi-layer graphene film.