Damping near Solid−Liquid Interfaces Measured with Atomic Force Microscopy

An atomic force microscope (AFM) is used to investigate changes in the effective viscosity of liquids which are confined between an AFM tip and a sample surface. In both cases studied, namely octamethylcyclotetrasiloxane near graphite and water near mica, it is found using two methods that the dampi...

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Bibliographic Details
Published in:Langmuir 1999-02, Vol.15 (4), p.922-925
Main Authors: O'Shea, S. J, Lantz, M. A, Tokumoto, H
Format: Article
Language:English
Subjects:
Chemistry
Exact sciences and technology
General and physical chemistry
Solid-liquid interface
Surface physical chemistry
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Summary:An atomic force microscope (AFM) is used to investigate changes in the effective viscosity of liquids which are confined between an AFM tip and a sample surface. In both cases studied, namely octamethylcyclotetrasiloxane near graphite and water near mica, it is found using two methods that the damping increases markedly at small tip−sample separations (
ISSN:0743-7463
1520-5827
DOI:10.1021/la981109b