CUED Publications database

Fast response and high sensitivity ZnO/glass surface acoustic wave humidity sensors using graphene oxide sensing layer

Xuan, W and He, M and Meng, N and He, X and Wang, W and Chen, J and Shi, T and Hasan, T and Xu, Z and Xu, Y and Luo, JK (2014) Fast response and high sensitivity ZnO/glass surface acoustic wave humidity sensors using graphene oxide sensing layer. Scientific Reports, 4. 7206-.

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Abstract

We report ZnO/glass surface acoustic wave (SAW) humidity sensors with high sensitivity and fast response using graphene oxide sensing layer. The frequency shift of the sensors is exponentially correlated to the humidity change, induced mainly by mass loading effect rather than the complex impedance change of the sensing layer. The SAW sensors show high sensitivity at a broad humidity range from 0.5%RH to 85%RH with < 1 sec rise time. The simple design and excellent stability of our GO-based SAW humidity sensors, complemented with full humidity range measurement, highlights their potential in a wide range of applications.

Item Type: Article
Subjects: UNSPECIFIED
Divisions: Div B > Solid State Electronics and Nanoscale Science
Depositing User: Cron Job
Date Deposited: 17 Jul 2017 19:07
Last Modified: 27 Jun 2020 20:06
DOI: 10.1038/srep07206