2017
DOI: 10.3390/s17071476
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The Resistance–Amplitude–Frequency Effect of In–Liquid Quartz Crystal Microbalance

Abstract: Due to the influence of liquid load, the equivalent resistance of in-liquid quartz crystal microbalance (QCM) increases sharply, and the quality factor and resonant frequency decreases. We found that the change in the resonant frequency of in-liquid QCM consisted of two parts: besides the frequency changes due to the mass and viscous load (which could be equivalent to motional inductance), the second part of frequency change was caused by the increase of motional resistance. The theoretical calculation and sim… Show more

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Cited by 12 publications
(6 citation statements)
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References 28 publications
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“…It is hard to directly measure the mass sensitivity of QCMs, for example, in reported research, Martin et al [ 17 ] obtained the normalized mass sensitivity and Takayoshi Kawasaki et al [ 28 ] obtained the relative values of mass sensitivity, but none of them measured the absolute sensitivity values directly. In other literature [ 25 , 26 , 27 ], some verified experiment were carried out and some trends could be observed, but the accuracy of these experiments are not high enough to validate its presented model.…”
Section: Methodsmentioning
confidence: 99%
See 1 more Smart Citation
“…It is hard to directly measure the mass sensitivity of QCMs, for example, in reported research, Martin et al [ 17 ] obtained the normalized mass sensitivity and Takayoshi Kawasaki et al [ 28 ] obtained the relative values of mass sensitivity, but none of them measured the absolute sensitivity values directly. In other literature [ 25 , 26 , 27 ], some verified experiment were carried out and some trends could be observed, but the accuracy of these experiments are not high enough to validate its presented model.…”
Section: Methodsmentioning
confidence: 99%
“…In the past couple of decades, the Sauerbrey equation was the theoretical basis of using QCM to measurement in gas phase. Based on the Sauerbrey equation and other models [ 15 , 16 , 17 , 18 , 19 ], the QCM has been commonly used to detect a variety of nanoscale target analytes in liquid and gas environments due to advantages including good surface selectivity, simplicity of operation, real-time output, label-free analysis, and so on [ 20 ].…”
Section: Introductionmentioning
confidence: 99%
“…Major inhomogeneities of a film might lead to false results. However, since the QCM is much more sensitive at the center of the quartz surface, the user can carefully assess whether inhomogeneities outside the center of the quartzes surface might be acceptable [94] .…”
Section: Limitations Of the Qcm Techniquementioning
confidence: 99%
“…This inclination represents the electrical susceptance ( B: reciprocal of reactance ) behavior of the sensor, where the angular frequency varies based on the minimum impedance point as in Figure 5 b. A recent paper discussed the influence of motional resistance and parallel capacitance variations on the resonator’s series resonance point for liquid-phase applications [ 67 ]. Detailed resonance-band characterization may also be reviewed from the following recommended references [ 39 , 63 , 65 ].…”
Section: Electrical Modeling Of Qcm Resonatorsmentioning
confidence: 99%