Director configuration of planar solitons in nematic liquid crystals

Details Director configuration of planar solitons in nematic liquid crystals Director configuration of planar solitons in nematic liquid crystals

1997-09-16

arxiv.org/abs/cond-mat/9709172v1

Physics

Condensed Matter

Soft Condensed Matter

12 pages, Revtex, 8 postscript figures

Scientific paper

10.1103/PhysRevE.57.3007

The director configuration of disclination lines in nematic liquid crystals in the presence of an external magnetic field is evaluated. Our method is a combination of a polynomial expansion for the director and of further analytical approximations which are tested against a numerical shooting method. The results are particularly simple when the elastic constants are equal, but we discuss the general case of elastic anisotropy. The director field is continuous everywhere apart from a straight line segment whose length depends on the value of the magnetic field. This indicates the possibility of an elongated defect core for disclination lines in nematics due to an external magnetic field.

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