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Topological Defects in Schlieren Textures of Biaxial and Uniaxial Nematics
Physical Review E
  • C. Chiccoli
  • I. Feruli
  • Oleg Lavrentovich, Kent State University - Kent Campus
  • P. Pasini
  • Sergij V. Shiyanovskii, Kent State University - Kent Campus
  • C. Zannoni
Publication Date
Document Type
  • liquid-crystal,
  • monte-carlo,
  • orientational order,
  • phase,
  • disclinations,
  • simulations,
  • symmetry
Monte Carlo and theoretical studies of thin 3D films of biaxial and uniaxial nematics with tangential boundary conditions show distinct differences in structure and evolution of topological defects. In the uniaxial films, defects of strength k=+/-1 are point defects that bear no bulk singularity and disappear by annihilation with each other. In the biaxial films, k=+/-1 defects are true singular bulk disclinations that split into pairs of k=+/-1/2 lines; the latter disappear by annihilation processes of the type +1/2-1/2=0. These observed differences are of relevance for the current debate on the existence of biaxial phases.

Copyright 2002 American Physical Society. Available on publisher's site at

Citation Information
C. Chiccoli, I. Feruli, Oleg Lavrentovich, P. Pasini, et al.. "Topological Defects in Schlieren Textures of Biaxial and Uniaxial Nematics" Physical Review E Vol. 66 Iss. 3 (2002)
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