Overview of Quartz Crystal Microbalance Behavior Analysis and Measurement

Chemosensors

卷:9

Sawit Na Songkhla¹  Takamichi Nakamoto² 

[1] Center of Excellence in Electrical Power Technology, Chulalongkorn University, Patumwan, Bangkok 10330, Thailand;

[2] School of Engineering, Tokyo Institute of Technology, Yokohama 226-8503, Japan;

关键词: chemical sensor;    biosensor;    Quartz Crystal Microbalance;    vector network analyzer;   

DOI  :  10.3390/chemosensors9120350

来源: DOAJ

【 摘 要 】

Quartz Crystal Microbalance (QCM) is one of the many acoustic transducers. It is the most popular and widely used acoustic transducer for sensor applications. It has found wide applications in chemical and biosensing fields owing to its high sensitivity, robustness, small sized-design, and ease of integration with electronic measurement systems. However, it is necessary to coat QCM with a sensing film. Without coating materials, its selectivity and sensitivity are not obtained. At present, this is not an issue, mainly due to the advancement of oscillator circuits and dedicated measurement circuits. Since a new researcher may seek to understand QCM sensors, we provide an overview of QCM from its fundamental knowledge. Then, we explain some of the recent QCM applications both in gas-phase and liquid-phase. Next, the theory of QCM is introduced by using piezoelectric stress equations and the Mason equivalent circuit, which explains how the QCM behavior is obtained. Then, the conventional equations that govern QCM behaviors in terms of resonant frequency and resistance are described. We show the behavior of QCM with a viscous film based on the acoustic wave equation and Mason equivalent circuit. Then, we present various existing QCM electronic measurement methods. Furthermore, we describe the experiment on QCM with viscous loading and its interpretation based on the Mason equivalent circuit. Lastly, we review some theoretical models to describe QCM behavior with various models.

【 授权许可】

Unknown