Frequency shift analysis of Quartz Crystal Microbalance with mass partially attached on electrode surfaces
Date Issued
2010
Date
2010
Author(s)
Yeh, Shih-Min
Abstract
Quartz Crystal Microbalance (QCM) has been a commercialized bio-sensor in recent years. Its application is to detect resonant frequency shift of QCM, which dependent on geometrical shapes of QCM and material properties of loading masses, so that mirror in the change of tiny masses cohered on the electrode surfaces.
In this paper, at first, we will proceed a verification of the analytic procedure: a relation between the resonant frequency shift and attached mass area will be introduced, , where α and β are undetermined coefficients. Then, by means of curve fitting approach, two significant coefficients, α and β, are capable of being determined together with the finite element model of different mesa-shaped QCMs. With a series of α and β being tabulated, the prediction of mass area attached on the electrode surfaces will be performed through linear interpolation of α and β. Afterward, extending to the preceding analytic theorem of mesa-shaped QCM, mesa-shaped multichannel QCM will be derived and acquired. Following the analogous procedure before, the prediction of mass area attached on the two electrode surfaces will be still verified and executed.
Therefore, the objective on this paper is intent to provide the effective predicted approach for mesa-shaped multichannel QCM, and be beneficial to manipulations of relevant experiments.
Subjects
Quartz Crystal Microbalance
Finite element
Curve fitting
Linear interpolation
Mesa-shaped multichannel QCM
Type
thesis
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