Phase-ordering dynamics of the Gay-Berne nematic liquid crystal
Abstract
Phase-ordering dynamics in nematic liquid crystals has been the subject of much active investigation in recent years in theory, experiments and simulations. With a rapid quench from the isotropic to nematic phase a large number of topological defects are formed and dominate the subsequent equilibration process. We present here the results of a molecular dynamics simulation of the Gay-Berne model of liquid crystals after such a quench in a system with 65536 molecules. Twist disclination lines as well as type-1 lines and monopoles were observed. Evidence of dynamical scaling was found in the behavior of the spatial correlation function and the density of disclination lines. However, the behavior of the structure factor provides a more sensitive measure of scaling, and we observed a crossover from a defect dominated regime at small values of the wavevector to a thermal fluctuation dominated regime at large wavevector.
Keywords
Cite
@article{arxiv.cond-mat/9906420,
title = {Phase-ordering dynamics of the Gay-Berne nematic liquid crystal},
author = {Jeffrey L. Billeter and Alexander M. Smondyrev and George B. Loriot and Robert A. Pelcovits},
journal= {arXiv preprint arXiv:cond-mat/9906420},
year = {2009}
}
Comments
18 pages, 16 figures, animations available at http://www.physics.brown.edu/Users/faculty/pelcovits/lc/coarsening.html