Regensburg 2007 – wissenschaftliches Programm
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MM: Fachverband Metall- und Materialphysik
MM 20: Poster session
MM 20.19: Poster
Dienstag, 27. März 2007, 14:45–18:00, Poster C
USAXS measurements of short- range ordering in mesoscopic systems — •Ina Klassen1, Patrick Wette1, Dieter Herlach1, Dirk Holland-Moritz1, and Stephan Roth2 — 1Institute of Materials Physics in Space, 51147 Cologne, Germany — 2Hasylab at Desy, 22603 Hamburg, Germany
High resolution ultra- small x- ray scattering techniques at Hasylab are used to determine the fluide and crystalline structure factor of charged colloidal suspensions. We analyse charged stabilised silica particles of 200nm radius with different volume fractions and salt concentrations. By varying the salt concentration we tune the electrical potential which influences the structural behavior of colloidal crystals. In addition to x-ray scattering we show light scattering experiments and compare the experimental results of both techniques with respect to structural information.