Theory and application of a quartz resonator as a sensor for viscous liquids |
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| Authors: | Z.A. Shana D.E. Radtke U.R. Kelkar F. Josse D.T. Haworth |
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| Affiliation: | Department of Electrical, Computer and Biomedical Engineering, Marquette University, Milwaukee, WI 53233 U.S.A.;Department of Chemistry, Marquette University, Milwaukee, WI 53233 U.S.A. |
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| Abstract: | A comprehensive analysis of the interaction between an AT-cut quartz crystal resonator and a viscous fluid is presented. The analysis, which includes peizoelectric effects, assumes a liquid of finite extent and therefore could also be used to study thin film of viscous liquids. A novel continuous flow cell system was designed and fabricated to monitor viscosity using an 11-MHz quartz crystal resonator. Measured data for frequency shifts of aqueous solutions of alcohols and sugars are in excellent agreement with theory. |
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