Dynamics of nematic ordering in porous media
Department of Physics, Kansas State University - Manhattan, KS 66506
Accepted: 20 November 1995
A microscopic lattice model for nematic liquid crystals in the presence of random fields is studied by Monte Carlo simulations. The order parameter autocorrelation function shows a standard dynamical scaling for weak random fields, and an activated dynamical scaling for strong random fields. These results are consistent with recent experiments. Evidence is also found that local correlations in the orientation of the liquid crystals along the pore surface should be taken into account for some details of the scaling functions observed in recent experiments.
PACS: 64.70.Md – Transitions in liquid crystals / 05.40.+j – Fluctuation phenomena, random processes, and Brownian motion / 64.60.Cn – Order-disorder and statistical mechanics of model systems
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