Student Work

Quartz Crystal Microbalance Measurements of Adsorption Potential Well-Depths

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Changes in the resonant frequency of a quartz crystal microbalance (QCM), can be used to measure film thicknesses on the order of 0.1 monolayer or less that are adsorbed on the microbalance's electrode surfaces. The well-depth of the adsorption potential for molecules on a flat surface is a key parameter for determining the wetting transition temperature for molecules on that surface. However, it is a difficult quantity to predict with precision using theoretical models. A QCM was used to determine the well-depth of the adsorption potential for for nitrous oxide and other polar molecules on flat surfaces. We compare our data with available theoretical predictions.

  • This report represents the work of one or more WPI undergraduate students submitted to the faculty as evidence of completion of a degree requirement. WPI routinely publishes these reports on its website without editorial or peer review.
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  • E-project-042607-103752
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  • 2007
Date created
  • 2007-04-26
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