期刊
SENSORS
卷 22, 期 14, 页码 -出版社
MDPI
DOI: 10.3390/s22145112
关键词
quartz crystal microbalance (QCM); mass sensitivity; electrode parameter; particle displacement amplitude
资金
- National Natural Science Foundation of China [61871098]
This article introduces the application of quartz crystal microbalance (QCM) and the importance of mass sensitivity. It focuses on the influence of electrode parameters and analyzes the effect of operating frequency on mass sensitivity.
A quartz crystal microbalance (QCM) is a typical acoustic transducer that undergoes a frequency shift due to changes in the mass of its surface. Its high sensitivity, robustness, small size design, and digital output have led to its widespread development for application in the fields of chemistry, physics, biology, medicine, and surface science. Mass sensitivity is one of the vital parameters and forms the basis for quantitative analysis using QCMs. This review firstly introduces the importance, definition, calculation, and measuring method of the mass sensitivity and then focuses on reviewing the influence of electrode parameters (including electrode shape, electrode diameter, electrode thickness, electrode material, etc.) on the mass sensitivity distribution of QCMs. Finally, the effect of the operating frequency on the mass sensitivity of QCMs is also analyzed.
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