Stability of optical reorientation of nematic liquid crystals doped with azo-dyes in polymer networks

Eunje Jang, Hak Rin Kim, Yu Jin Na, Sin Doo Lee

Research output: Contribution to journalArticlepeer-review

5 Scopus citations

Abstract

We report on the stability of the optical reorientation of doped nematic liquid crystals (LCs) with azo-dyes in polymer networks. The photo-reactive polymer networks formed within the doped LC medium play a critical role in achieving the stable optical reorientation of the LC originating from the trans-cis transformation of the dye molecules. Moreover, the photo-reactive polymer layer on the substrate surface is required to produce the surface memory effect of the dye-doped LC. The optically induced memory is well retained in the dye-doped LC only in the presence of the polymer network medium.

Original languageEnglish
Pages (from-to)11/[281]-19/[289]
JournalMolecular Crystals and Liquid Crystals
Volume422
DOIs
StatePublished - 2004

Keywords

  • Liquid crystals doped with azo-dyes
  • Optical reorientation
  • Polymer networks
  • Surface memory effect

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