Regensburg 2000 – wissenschaftliches Programm
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DY: Dynamik und Statistische Physik
DY 46: POSTER II
DY 46.11: Poster
Donnerstag, 30. März 2000, 15:00–18:00, D
Dynamics of layering transitions in confined liquids — •Frieder Mugele1 and Miquel Salmeron2 — 1Universit*t Ulm, Abteilung Angewandte Physik; Albert Einstein Allee 11; D 89069 ULM — 2Lawrence Berkeley National Laboratory, Materials Science Division; 1, Cyclotron Road; Berkeley, CA 94720, USA
Multiple beam interferometry and video microscopy were used to
investigate the layering transition of thin liquid films of
1-undecanol confined between atomically smooth mica surfaces.
The expulsion of a molecularly thin lubricant layer was followed
directly in two dimensions. Overall, the dynamics of layering
transitions follow theoretical predictions based on
two-dimensional hydrodynamics. Frequently, pockets of
liquid remain trapped inside the contact area at the end of
the transition. The trapped pockets undergo shape
transformations to minimize elastic and interfacial energy.
F. Mugele and M. Salmeron, submitted to PRL