Methods for Calibrating the Electrochemical Quartz Crystal Microbalance: Frequency to Mass and Compensation for Viscous Load
CHEMOSENSORS(2023)
摘要
The main output from an Electrochemical Quartz Crystal Microbalance is a frequency shift. This note describes how to separate the mass- and viscous load contributions to this shift by a calibration procedure. The mass calibration is made by electroplating from a copper sulfate solution in ethanol/water with 100% current efficiency. An estimate of viscous load is obtained by measuring the energy dissipation and is related to frequency change using the Kanazawa-Gordon equation. Two approaches are discussed: either by performing calibration experiments in a series of water-glycerol mixtures or by following oscillations in frequency and dissipation by collecting data during the stabilization phase of the experiment.
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关键词
electrochemical quartz crystal microbalance
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