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Regensburg 2010 – wissenschaftliches Programm

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DF: Fachverband Dielektrische Festkörper

DF 14: Glasses I (Joint Session of DY, DF, CPP)

DF 14.11: Vortrag

Mittwoch, 24. März 2010, 17:15–17:30, H48

Glass transition of colloidal particles with long-ranged interactions in two dimensions — •David Hajnal, Martin Oettel, and Rolf Schilling — Institut für Physik, Johannes Gutenberg-Universität Mainz, Staudinger Weg 7, D-55099 Mainz, Germany

We study the glass transition behavior of binary mixtures of colloidal particles with long-ranged dipolar interactions in two dimensions in the framework of mode-coupling theory (MCT). We first present a minimal model for the theoretical description of the thermodynamic properties of the experimental system studied by König et al. [1]. By applying MCT to this model, we determine its glass transition diagram, i.e. we calculate the variation of the critical interaction strength upon composition changes. Finally, we compare the mixing effects predicted by MCT for this model to both experiments [1] and MCT results for binary mixtures of hard disks [2].
[1] H. König, R. Hund, K. Zahn, and G. Maret, Eur. Phys. J. E 18, 287 (2005).
[2] D. Hajnal, J. M. Brader, and R. Schilling, Phys. Rev. E 80, 021503 (2009).


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