Relations between Mass Change and Frequency Shift of a QCM Sensor in Contact with Viscoelastic Medium
TAN Feng** , HUANG Xian-He
School of Automation Engineering, University of Electronic Science and Technology of China, Chengdu 611731
Abstract ：We investigate frequency shift of a quartz crystal microbalance (QCM) sensor introduced by mass effect, and properties of material of its coated viscoelastic film are discussed. The validity of the Sauerbrey relation cannot be held if the viscoelastic properties of the contacting medium are considered. When the QCM sensor with a viscoelastic film works in the gas phase, the viscoelastic properties will introduce an extra mass effect. While in the liquid phase, the missing mass effect can be observed. The experimental results demonstrate that the QCM sensor is sensitive to the viscoelastic properties of the coating film. Properties of the viscoelastic contacting medium should be considered.
收稿日期: 2012-12-04
出版日期: 2013-05-31
:
07.75.+h
(Mass spectrometers)
43.25.Zx
(Measurement methods and instrumentation for nonlinear acoustics)
43.35.Ns
(Acoustical properties of thin films)
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