Quartz crystal microbalance with dissipation monitoring (QCM-D) can detect changes in oscillating frequency of a quartz crystal as well as in energy dissipation of adsorption material. For example, a decreased frequency results from an increased adsorption amount, while an increased dissipation results from an increased viscoelasticity of the adsorption layer. The QCM-D can monitor the frequency and dissipation changes with less than 1 s intervals. This enables us to analyse non-equilibrium adsorption or reaction system in solution. Various sensors such as gold, silica, titania, iron oxide or polystyrene are available for the QCM-D instrument, which enables QCM-D measurement possible for a wide range of applications. Special attention should be paid to the solvation effect of the adsorption material; the amount obtained by QCM-D is expressed as “wet mass”, while that of other methods such as ellipsometry or optical reflectometry is called “dry mass”. Another important point in QCM-D measurement is the effect of viscosity and density of bulk solution because these properties also contribute to the frequency change.
CITATION STYLE
Sakai, K. (2019). Quartz Crystal Microbalance with Dissipation Monitoring (QCM-D). In Measurement Techniques and Practices of Colloid and Interface Phenomena (pp. 45–50). Springer Singapore. https://doi.org/10.1007/978-981-13-5931-6_7
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