
The quartz crystal microbalance (QCM) sensor with asymmetric ring electrodes has received widespread attention for its uniform sensitivity distribution. At the same time, its 5-overtone mass sensitivity also greatly improves the fundamental frequency mass sensitivity. The 5-overtone quality (Q) factor is a technical indicator to measure the stable operation of the quartz crystal resonator with asymmetric ring electrodes in the fifth overtone mode. However, there are few papers to report the 5-overtone quality factor (Q5) of QCM sensor with asymmetric ring electrodes.
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