Light-induced instabilities in photo-oriented liquid crystal cells

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Abstract

In a planar liquid crystal sample sandwiched between a photosensitive and a reference plate instabilities occurred, when the cell was illuminated from the reference side. The instabilities were induced both by polarized white light source and monochromatic laser beams. Static and dynamic regimes were found; for laser irradiation dynamic instability was found only in a range of polarization directions. A model, developed for monochromatic excitation, predicts that at certain thicknesses dynamic instability is forbidden. Experiments on a wedge-like cell confirmed this conclusion.

Original languageEnglish
Pages (from-to)92-99
Number of pages8
JournalMolecular crystals and liquid crystals
Volume594
Issue number1
DOIs
Publication statusPublished - May 3 2014

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Keywords

  • Photoorientation
  • light-induced phenomena
  • pattern formation

ASJC Scopus subject areas

  • Chemistry(all)
  • Materials Science(all)
  • Condensed Matter Physics

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