Dresden 2009 – wissenschaftliches Programm
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MM: Fachverband Metall- und Materialphysik
MM 21: Topical Session Nanoporous Functional Materials - Poster
MM 21.8: Poster
Dienstag, 24. März 2009, 14:45–16:30, P4
Optical birefringence study of molecular ordering in tubular silica nanochannels — •Matthias Wolff1, Andriy Kityk2, Klaus Knorr1, and Patrick Huber1 — 1Technische Physik, Universität des Saarlandes, Germany — 2Institute for Computer Science, Czestochowa University of Technology, Poland
The condensation of different liquids in nanoporous silicon oxide is studied by combined volumetric adsorption isotherm and optical birefringence measurements. Obtained results suggest that molecules adsorbed in the nanoporous matrix exhibit a weak orientational order in the first adsorbed layers. We could also observe continuous paranematic-to-nematic ordering transitions of liquid crystals in the tubular silica nanochannels1.
(1) A.V. Kityk, M. Wolff, K. Knorr, D. Morineau, R. Lefort, P. Huber: PRL 101, 187801 (2008).