Interpretation of Quartz Crystal Microbalance Behavior with Viscous Film Using a Mason Equivalent Circuit

Songkhla, Sawit Na; Nakamoto, Takamichi

doi:10.3390/chemosensors9010009

Cited by 9 publications

(8 citation statements)

References 22 publications

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“…The sensor responses were decreases of the resonant frequencies except for PPE, which showed a resonant frequency increase. A positive frequency shift is caused by viscosity changes as explained in [26]. The QCM-generated mechanical oscillation propagates into the sensing film and it is attenuated by its viscosity.…”

Section: Active Sensing Systemmentioning

confidence: 98%

“…After coating, the sensor was characterized by the decrease in resonant frequency between the sensor before and after coating (shown in Table I). Coating thickness whose resonant frequency shifts are around 1 kHz has a good balance between sensitivity and stability [26]. The resonant frequency shift was measured by a vector network analyzer (VNA) [27].…”

Section: A Gas Sensor Arraymentioning

confidence: 99%

“…Two parameters of the QCMs were monitored during the measurements, the resonance frequency and the series resistance of an equivalent circuit. The resonance frequency change reflects the mass of the gas adsorbed at the sensing layer, while the resistance change reflects the resonance loss change caused by the viscosity variation of the sensing layer due to the gas adsorption [26].…”

Section: Table I Qcm Sensors and Their Frequency Shift Due To Film Co...mentioning

confidence: 99%

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Online Learning for Active Odor Sensing Based on a QCM Gas Sensor Array and an Odor Blender

Aleixandre

Nakamoto

2022

IEEE Sensors J.

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and the Ph.D. degree in automatic and informatics industrial engineering from the Universidad Nacional de Educacion a Distancia, Madrid, in 2007. He worked with several departments at the Spanish Consejo Superior de Investigaciones Cientificas, Madrid, from 2000 to 2017, researching gas sensors, aerosol, and analysis of electromyography signals. He worked with Sgenia, Madrid, as a Researcher Engineer, developing electronic noses in the health field from 2014 to 2015. Since 2018, he has been working as a Researcher with

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Section: Active Sensing Systemmentioning

confidence: 98%

Section: A Gas Sensor Arraymentioning

confidence: 99%

Section: Table I Qcm Sensors and Their Frequency Shift Due To Film Co...mentioning

confidence: 99%

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Online Learning for Active Odor Sensing Based on a QCM Gas Sensor Array and an Odor Blender

Aleixandre

Nakamoto

2022

IEEE Sensors J.

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“…The water sorption causes the overall film thickness to increase and the film viscosity to decrease. This assumption is expected to be able to adequately explain the experimental data, which were conducted with glycerol and Polyethylene Glycol (PEG) with two different molecular weights as film materials [76]. The three different materials were coated on the QCMs using the dip-coater.…”

Section: Experiments On Qcm With Viscous Loadingmentioning

confidence: 99%

Overview of Quartz Crystal Microbalance Behavior Analysis and Measurement

Songkhla

Nakamoto

2021

Chemosensors

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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.

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“…QCM sensors can be described with a Mason equivalent circuit [ 22 , 23 ]. After several mathematical simplifications, the equivalent circuit can be described as a Butterworth–Van Dyke (BVD) equivalent circuit [ 24 ]. Many researchers have contributed to the QCM equivalent parameter measurement of BVD equivalent circuits.…”

Section: Introductionmentioning

confidence: 99%

Method for QCM Resonator Device Equivalent Circuit Parameter Extraction and Electrode Quality Assessment

et al. 2021

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Quartz crystal microbalance (QCM) resonators are used in a wide range of sensors. Current QCM resonators achieve a simultaneous measurement of multiple physical quantities by analyzing lumped-element equivalent parameters, which are obtained via the introduction of external devices. This introduction of external devices will probably increase measurement error. To realize the measurement of multiple physical quantities while eliminating the measurement error caused by external devices, this paper proposes a measurement method for the lumped-element equivalent parameters of QCM resonators without the need for extra external devices. Accordingly, a numerical method for solving nonlinear equations with fewer data points required and a higher accuracy was adopted. A standard crystal resonator parameter extraction experiment is described. The extracted parameters were consistent with the nominal parameters, which confirms the accuracy of this method. Furthermore, six QCM resonator device samples with different electrode diameters and materials were produced and used in the parameter measurement experiment. The linear relationship between the electrode material conductivity and motional resistance R1 is discussed. The ability of this method to characterize the electrode material and to detect the rust status of the electrode is also demonstrated. These abilities support the potential utility of the proposed method for an electrode quality assessment of piezoelectric devices.

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Interpretation of Quartz Crystal Microbalance Behavior with Viscous Film Using a Mason Equivalent Circuit

Cited by 9 publications

References 22 publications

Online Learning for Active Odor Sensing Based on a QCM Gas Sensor Array and an Odor Blender

Online Learning for Active Odor Sensing Based on a QCM Gas Sensor Array and an Odor Blender

Overview of Quartz Crystal Microbalance Behavior Analysis and Measurement

Method for QCM Resonator Device Equivalent Circuit Parameter Extraction and Electrode Quality Assessment

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