Analysis of Quality Factor of the Quartz Crystal Resonator with N-M Asymmetric Electrodes

Recently, the quartz crystal microbalance (QCM) with N-M asymmetric electrodes has been reported to improve significantly its sensitivity. As a main part of QCM, the performance of quartz crystal resonator is directly related to QCM sensor. Therefore, it is necessary to develop a high performance of quartz crystal resonator. Considering that the quality (Q) factor is one of the most important parameters to the quartz crystal resonator. However, there is few studies to report the Q-factor of QCM resonator with N-M asymmetric electrodes. Herein, we investigate the Q-factor of QCM resonator with N-M asymmetric electrodes. The experimental results show that their Q-factors are larger than 15000, and all half bandwidths are less than 650 Hz. These performance parameters show that the QCM with N-M asymmetric electrodes have excellent stability and they can be reliably applied in many fields.