Antipersistent behavior of defects in a lyotropic liquid crystal during annihilation

H. V. Ribeiro, R. R. Guimarães, R. T. Teixeira-Souza, H. Mukai, P. R. G. Fernandes, E. K. Lenzi, and R. S. Mendes
Phys. Rev. E 87, 054501 – Published 29 May 2013

Abstract

We report on the dynamical behavior of defects of strength s=±1/2 in a lyotropic liquid crystal during the annihilation process. By following their positions using time-resolved polarizing microscopy technique, we present statistically significant evidence that the relative velocity between defect pairs is Gaussian distributed, antipersistent, and long-range correlated. We further show that simulations of the Lebwohl-Lasher model reproduce quite well our experimental findings.

  • Received 1 April 2013

DOI:https://doi.org/10.1103/PhysRevE.87.054501

©2013 American Physical Society

Authors & Affiliations

H. V. Ribeiro1,2,*, R. R. Guimarães1,2,3, R. T. Teixeira-Souza4, H. Mukai1,3, P. R. G. Fernandes1,3, E. K. Lenzi1,2, and R. S. Mendes1,2

  • 1Departamento de Física, Universidade Estadual de Maringá, 87020-900, Maringá, Paraná, Brazil
  • 2National Institute of Science and Technology for Complex Systems, CNPq, 22290-180, Rio de Janeiro, Rio de Janeiro, Brazil
  • 3National Institute of Science and Technology for Complex Fluids, CNPq, 05508-090, São Paulo, São Paulo, Brazil
  • 4Universidade Tecnológica Federal do Paraná, Campus Pato Branco, 85503-390, Pato Branco, Paraná, Brazil

  • *hvr@dfi.uem.br

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Vol. 87, Iss. 5 — May 2013

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