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What is Measurement Method of Physical Properties of Adsorbed Layers about?

Lubrication by a molecularly thin film has become very important in micro machines, magnetic recording disks and so on. Molecularly thin film is considered a good lubricant for these micro devices. When, the thickness of the lubricant film is thinned to several nanometers, the tribological properties of the film become different from that of the bulk. Therefore it is important to know these properties. Quartz crystal microbalance (QCM) is common in thin film growth, where it is used for film thickness measurements. QCM allows one to evaluate the physical properties of viscous liquid layer on the quartz crystal surface. In this study, we investigated the effect of additives on the viscosity. When the additives formed the adsorbed layer on the quartz crystal, the decreases in the resonant frequency of the quartz crystal were observed. It is found that QCM can detect the properties of adsorbed layers.

Author

Kentaro Tanaka; Katsumi Iwamoto

Publisher

Elsevier

Published

2005

Language

EN