Regensburg 2010 – scientific programme
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DY: Fachverband Dynamik und Statistische Physik
DY 6: Poster Session I
DY 6.17: Poster
Monday, March 22, 2010, 16:00–18:00, Poster B2
Morphological Influences on Colloidal Transport in Porous Structures — •Christian Scholz1, Yujie Li1,2, and Clemens Bechinger1,2 — 12. Physikalisches Institut, Universität Stuttgart, Pfaffenwaldring 57, 70569 Stuttgart, Germany — 2Max-Planck-Institut für Metallforschung, Heisenbergstrasse 3, 70569 Stuttgart, Germany
The morphological properties of artificial quasi two-dimensional micro porous structures are studied and related to transport properties of colloidal particles on a single particle level. The structure of the samples which are created with soft lithography are characterized using pore size distributions, percolation thresholds and Minkowski functionals, where the Euler index is used as a fast and robust measure to identify differences between designed and fabricated structures. We present first results where we demonstrate how small changes in the sample morpholoy lead to significant differences in the particle trajectories and the corresponding mean squared displacements.