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JETP Letters

, Volume 97, Issue 2, pp 92–97 | Cite as

Asymmetry of the time dynamics of breathers in the electroconvection twist structure of a nematic

  • O. A. Skaldin
  • V. A. Delev
  • E. S. Shikhovtseva
Condensed Matter

Abstract

Dynamics of breather defects in the periodic structures of rolls arising at electroconvection in nematic liquid crystals twisted by π/2 has been studied experimentally and theoretically. The axial components of the velocity of a hydrodynamic flow in the twist structures of nematics are opposite in the neighboring rolls. Dynamics of the breather defect is the periodic creation and annihilation of a pair of classical dislocations with the topological indices “+1” and “-1.” The annihilation occurs faster than the creation. It has been shown that the asymmetric time dynamics of the breather defect is described well by the solution of the perturbed sine-Gordon equation in the form of an interacting soliton and antisoliton.

Keywords

Soliton Liquid Crystal JETP Letter Nematic Liquid Crystal Sine Gordon Equation 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Pleiades Publishing, Ltd. 2013

Authors and Affiliations

  • O. A. Skaldin
    • 1
  • V. A. Delev
    • 1
  • E. S. Shikhovtseva
    • 1
  1. 1.Institute of Physics of Molecules and Crystals, Ufa Scientific CenterRussian Academy of SciencesUfaRussia

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