Numerical investigations of spatially periodic deformations in selected nematic layers

Dariusz Krzyzański, Grzegorz Derfel

Research output: Contribution to journalConference articlepeer-review

2 Scopus citations


The periodic deformations of planar nematic (i), planar twisted nematic (ii), and hybrid aligned nematic (iii) layers, were analysed numerically. In the cases (i) and (ii), the periodic deformations induced by magnetic field under strong anchoring conditions, were taken into account. In the case (iii), the so called splay stripes, which arise spontaneously under the weak anchoring conditions, were considered. In each of these geometries, two different types of periodic deformations were found. For all deformations, the director distributions were calculated. The ranges of material and layer parameters, for which the periodic deformations occurred, were determined. The following features, common for most of the deformations, were found: (1) wide regions with nearly homogeneous deformation exist in to halves of a stripe in strongly deformed layers; (2) the spatial period of the deformations diverges to infinity with variation of suitable parameter (e.g. field strength, twist angle, anchoring energy etc.); (3) above critical values of parameters, the nearly homogeneous regions spread over the whole layer and the periodic deformations are replaced by homogeneous distortions.

Original languageEnglish
Pages (from-to)237-245
Number of pages9
JournalProceedings of SPIE - The International Society for Optical Engineering
StatePublished - 1 Jan 2002
Externally publishedYes
EventXIV Conference on Liquid Crystals: Chemistry, Physics, and Applications - Zakopane, Poland
Duration: 3 Sep 20017 Sep 2001


  • Director distribution
  • Periodic deformations

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Computer Science Applications
  • Applied Mathematics
  • Electrical and Electronic Engineering


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