Berlin 2008 – wissenschaftliches Programm

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CPP: Fachverband Chemische Physik und Polymerphysik

CPP 22: POSTERS Micro- and Nanofluidics

CPP 22.22: Poster

Mittwoch, 27. Februar 2008, 16:00–18:30, Poster A

Thermally Excited Capillary Waves on n-Alkanes: Photon Correlation Spectroscopy Studies — •Matthias Wolff and Patrick Huber — Saarland University, Saarbruecken, Germany

Quasi-elastic light scattering from thermally excited capillary waves is a powerful method to study the surface hydrodynamics of liquids. We have designed a photon correlation spectroscopy setup in order to investigate this scattering and to relate it to the fundamental structural and thermodynamical properties of liquid surfaces. First measurements on the surface freezing effect in n-alkanes (n-eicosane, n-tetracosane) and how it affects the surface rheology are presented.