Abstract
In this paper the possibility of using a quartz crystal coated with electrodes and a tab for simultaneous mass and temperature determinations is investigated. The practical applicability of the recently introduced method, based on the properties of the resonant frequencies of an electrode-tab system, strongly depends on the accuracy by which mass and temperature can be determined. It is shown from the experiments presented in the paper that the accuracy of the method is strongly improved by measuring the temperature with the help of the higher-order harmonic overtones related to the electrodes, and by measuring the mass with the help of the fundamental resonant frequency related to the tab. An analysis to determine the error in the mass and temperature, resulting from calibration and experimental errors, is given. The results from the analysis show that a mass change of 10 Å (copper) and a temperature change of 0.01 °C can be determined within 3% and 18%, respectively. Some suggestions are given for further improvement of the method in order to make it useful for practical applications.
Published Version
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