Analysis of the Effect of Electrode Materials on the Sensitivity of Quartz Crystal Microbalance

Nanomaterials

Yao Yao¹  Xianhe Huang¹  Kunlei Mao¹  Qiao Chen¹ 

[1] School of Automation Engineering, University of Electronic Science and Technology of China, No. 2006, Xiyuan Avenue, Chengdu 611731, China;

关键词: humidity sensor;    quartz crystal microbalance (QCM);    graphene oxide (GO);    electrode material parameters;    mass sensitivity;   

DOI  :  10.3390/nano12060975

来源: DOAJ

【 摘 要 】

This paper investigated the effect of electrode materials on the performance of quartz crystal microbalance (QCM) sensors by means of theoretical calculation, experiment, and finite element analysis methods. First, we calculated the particle displacement amplitude and thus obtained the mass sensitivity function distribution of QCMs with gold, silver and aluminum electrodes, and found that the QCM with the gold electrode has the highest mass sensitivity at the center of the electrode. Then, we tested the humidity-sensing performance of QCMs with gold, silver, and aluminum electrodes using graphene oxide (GO) as the sensitive material, and found that the QCM with the gold electrode has higher humidity sensitivity. Finally, we used the finite element analysis software COMSOL Multiphysics to simulate the specific electrode material parameters that affect the sensitivity of the QCMs. The simulation results show that the density and Young’s modulus of the electrode material parameters mainly affect the sensitivity. The results of this paper are instructive for optimizing QCM sensor performance and improving the capability of QCM quantitative analysis.

【 授权许可】

Unknown