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dc.contributor.authorChoi, Jae-Hyeoken
dc.contributor.authorKanazawa, Kay K.en
dc.contributor.authorCho, Nam-Joonen
dc.identifier.citationChoi, J. H., Kanazawa, K. K., & Cho, N. J. (2014). Effect of a non-newtonian load on signature S2 for quartz crystal microbalance measurements. Journal of sensors, 2014, 1-8.en
dc.description.abstractThe quartz crystal microbalance (QCM) is increasingly used for monitoring the interfacial interaction between surfaces and macromolecules such as biomaterials, polymers, and metals. Recent QCM applications deal with several types of liquids with various viscous macromolecule compounds, which behave differently from Newtonian liquids. To properly monitor such interactions, it is crucial to understand the influence of the non-Newtonian fluid on the QCM measurement response. As a quantitative indicator of non-Newtonian behavior, we used the quartz resonator signature, S2 , of the QCM measurement response, which has a consistent value for Newtonian fluids. We then modified De Kee’s non-Newtonian three-parameter model to apply it to our prediction of S2 values for non-Newtonian liquids. As a model, we chose polyethylene glycol (PEG400) with the titration of its volume concentration in deionized water. As the volume concentration of PEG400 increased, the S2 value decreased, confirming that the modified De Kee’s three-parameter model can predict the change in S2 value. Collectively, the findings presented herein enable the application of the quartz resonator signature, S2 , to verify QCM measurement analysis in relation to a wide range of experimental subjects that may exhibit non-Newtonian behavior, including polymers and biomaterials.en
dc.description.sponsorshipNMRC (Natl Medical Research Council, S’pore)en
dc.relation.ispartofseriesJournal of sensorsen
dc.rights© 2014 Jae-Hyeok Choi et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.en
dc.titleEffect of a non-newtonian load on signature S2 for quartz crystal microbalance measurementsen
dc.typeJournal Articleen
dc.contributor.schoolSchool of Chemical and Biomedical Engineeringen
dc.contributor.schoolSchool of Materials Science & Engineeringen
dc.description.versionPublished versionen
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