Faculty Advisor

Garcia, Rafael

Abstract

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.

Publisher

Worcester Polytechnic Institute

Date Accepted

April 2007

Major

Physics

Project Type

Major Qualifying Project

Accessibility

Unrestricted

Advisor Department

Physics

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