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Applied Sciences
Volume 15
Issue 17
10.3390/app15179261
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This is an early access version, the complete PDF, HTML, and XML versions will be available soon.
Article

Measurement of the Instrumental Effect Caused by Flexure Clamping on Quartz Crystal Microbalances

by
Diego Scaccabarozzi
1,*,
Chiara Martina
1,
Bortolino Saggin
2 and
Emiliano Zampetti
3
1
Mechanical Engineering Department, Politecnico di Milano, 20156 Milano, Italy
2
Industrial Engineering Department, CISAS—Università degli Studi di Padova, 35131 Padova, Italy
3
Institute of Atmospheric Pollution Research—CNR, 00010 Rome, Italy
*
Author to whom correspondence should be addressed.
Appl. Sci. 2025, 15(17), 9261; https://doi.org/10.3390/app15179261
Submission received: 13 June 2025 / Revised: 14 July 2025 / Accepted: 21 August 2025 / Published: 22 August 2025
Versions Notes

Abstract

This study focuses on piezoelectric quartz crystal microbalances (QCMs), widely used in space and military instrumentation, as fundamental components in highly sensitive mass detection devices. In this research, a proper setup was developed to investigate the relationship between clamping preload and crystal resonance, with particular attention to the effects of concentrated loads. The latter ones, not properly addressed in the literature, come from the need to safely clamp QCMs in critical environments, like those experienced during the launch of rockets or payloads. Thus, the study investigates the behaviour of piezoelectric quartz crystals (AT-cut, 10 MHz) with gold electrodes, using a QCMs’ three-pinned mounting system. Measurements showed that the effect of the preload on the frequency variation resulted in a repeatable increase in the crystals’ resonance, increasing the loading, up to three ppm more than the unloaded quartz crystal oscillating frequency.
Keywords: QCM; mechanical preload; concentrated loads; mounting system; frequency stability QCM; mechanical preload; concentrated loads; mounting system; frequency stability

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MDPI and ACS Style

Scaccabarozzi, D.; Martina, C.; Saggin, B.; Zampetti, E. Measurement of the Instrumental Effect Caused by Flexure Clamping on Quartz Crystal Microbalances. Appl. Sci. 2025, 15, 9261. https://doi.org/10.3390/app15179261

AMA Style

Scaccabarozzi D, Martina C, Saggin B, Zampetti E. Measurement of the Instrumental Effect Caused by Flexure Clamping on Quartz Crystal Microbalances. Applied Sciences. 2025; 15(17):9261. https://doi.org/10.3390/app15179261

Chicago/Turabian Style

Scaccabarozzi, Diego, Chiara Martina, Bortolino Saggin, and Emiliano Zampetti. 2025. "Measurement of the Instrumental Effect Caused by Flexure Clamping on Quartz Crystal Microbalances" Applied Sciences 15, no. 17: 9261. https://doi.org/10.3390/app15179261

APA Style

Scaccabarozzi, D., Martina, C., Saggin, B., & Zampetti, E. (2025). Measurement of the Instrumental Effect Caused by Flexure Clamping on Quartz Crystal Microbalances. Applied Sciences, 15(17), 9261. https://doi.org/10.3390/app15179261

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