Regensburg 2004 – wissenschaftliches Programm

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DY: Dynamik und Statistische Physik

DY 46: Poster

DY 46.49: Poster

Donnerstag, 11. März 2004, 16:00–18:00, Poster D

Computer simulation studies of structures and elastic properties of model colloids — •Peter Henseler and Peter Nielaba — Lehrstuhl für Theoretische Physik, Fachbereich Physik, Universität Konstanz, D-78457 Konstanz

We perform classical Monte-Carlo simulations to calculate isothermal elastic constants of crystal phases of mono-disperse hard-sphere colloids. The elastic constants are determined from microscopic fluctuations of the instantaneous local Lagrangian strain є_ij(r, t), measured with respect to a static reference lattice, and the use of a finite-size scaling theory. This approach is a generalization of the method of Sengupta et al. [1] to three dimensions.

We furthermore investigate structures of three dimensional colloidal mixtures with different composition and diameter ratios.

[1] S. Sengupta, P. Nielaba, M. Rao, K. Binder, Phys. Rev. E 61, 1072 (2000)