Dynamic Response of Quartz Crystal Microbalances in contact with Silicone Oil Droplets
Name
Han-2010-Dynamic Response.pdf
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945.45 KB
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Checksum (MD5)
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Author(s)
Zhuang, Han
Lim, Siak Piang
Lee, Heow Peuh
Date Issued
April 2010
Journal
Proceedings of SPIE--the International Society for Optical Engineering; v.7522
Publisher
SPIE
Citation
Han Zhuang, Heow Pueh Lee and Siak Piang Lim, "Dynamic response of quartz crystal microbalances in contact with silicone oil droplets", Proc. SPIE 7522, 75222X (2009); doi:10.1117/12.848916 © 2010 SPIE
Version
Final published version
Abstract
Quartz crystal microbalances (QCMs) in contact with liquid droplets have been used to investigate the rheological properties of liquids and the diverse solid-liquid interfacial phenomena. In this article, we first report the experimental results of the QCM responses due to the deposition of microliter droplets of silicone oils. The silicone oils with viscosity in a range from 50cS to 103cS are tested. It has been found that the responses in the frequency and resistance measurements of the QCM in contact with the silicone oils are different from the Newtonian liquids. More importantly, it has been found that for the silicone oils the frequency of the QCM steadily increases for several hours and even exceeds the initial value of the unloaded QCM which has resulted in the positive frequency changes. The collaborative effects of the interfacial slip and viscoelasticity have been discussed to qualitatively interpret the positive frequency changes. Secondly, we discuss the cyclical variations in the frequency and resistance during the experiments of the silicone oils, which are attributed to the generation of the compressional wave in the droplets. The present work has shown some phenomena which need to be taken into consideration when using the droplet QCM as a rheological sensor and may stimulate the ongoing research on the related issues in the QCM community.
Description
Conference Title: Fourth International Conference on Experimental Mechanics
MIT Department
Singapore-MIT Alliance in Research and Technology (SMART)
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Article is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use.
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DOI of Published Version
https://doi.org/10.1117/12.848916
