Molecular Effects in Ultra-Thin Liquid Film Spreading Dynamics

Herminghaus, Stephan; Sigel, Ulrich; Albrecht, Uwe; Leiderer, Paul

Molecular Effects in Ultra-Thin Liquid Film Spreading Dynamics

Files

173_procofrencontr_1995.pdf(1.16 MB)

Date

1995

Authors

Herminghaus, Stephan

Sigel, Ulrich

Albrecht, Uwe

Leiderer, Paul

Publication type

Contribution to a conference collection

Published in

Short and long chains at interfaces : proceedings of the XXXth Rencontres de Moriond, Villars sur Ollon, Switzerland, 1995. - pp. 295-301

Abstract

The spreading dynamics of silicon oil films at thickness in the monolayer regime is studied by monitoring the evolution of the coverage profile with optically excited surface plasmons. While for thicknesses above one monolayer the observed profiles agree well with the theory of viscous flow spreading, strong deviations are observed at smaller coverages which point to a diffusivity which decreases with decreasing covetage. This can be qualitatively explained in the framework of the excluded area interaction of the chain molecules. When the coverage decreases, the configurational entropy of the individual molecules changes strongly, leading to a substantially enhanced apparent viscosity for submonolayer films.

Subject (DDC)

530 Physics

Conference

Short and long chains at interfaces, 1995, Villars sur Ollon, Switzerland

Cite This

ISO 690

HERMINGHAUS, Stephan, Ulrich SIGEL, Uwe ALBRECHT, Paul LEIDERER, 1995. Molecular Effects in Ultra-Thin Liquid Film Spreading Dynamics. Short and long chains at interfaces. Villars sur Ollon, Switzerland, 1995. In: Short and long chains at interfaces : proceedings of the XXXth Rencontres de Moriond, Villars sur Ollon, Switzerland, 1995, pp. 295-301

BibTex

@inproceedings{Herminghaus1995Molec-4879,
  year={1995},
  title={Molecular Effects in Ultra-Thin Liquid Film Spreading Dynamics},
  booktitle={Short and long chains at interfaces : proceedings of the XXXth Rencontres de Moriond, Villars sur Ollon, Switzerland, 1995},
  pages={295--301},
  author={Herminghaus, Stephan and Sigel, Ulrich and Albrecht, Uwe and Leiderer, Paul}
}

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