Light-induced gliding of the easy orientation axis of a dye-doped nematic liquid crystal

Fedorenko D., Slyusarenko K., Ouskova E., Reshetnyak V., Ha K., Karapinar R., ...More

PHYSICAL REVIEW E, vol.77, no.6, 2008 (SCI-Expanded) identifier identifier identifier

  • Publication Type: Article / Article
  • Volume: 77 Issue: 6
  • Publication Date: 2008
  • Doi Number: 10.1103/physreve.77.061705
  • Journal Name: PHYSICAL REVIEW E
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Van Yüzüncü Yıl University Affiliated: No

Abstract

We studied the effect of light-induced gliding of the easy axis of dye-doped nematic liquid crystal on an aligning polymer surface. The observed drift of the easy axis is over tens of degrees and is caused by light-induced anisotropic adsorption and/or desorption of dye molecules on or from the aligning layer in the presence of light-induced bulk torque. We present a theoretical model that explains the experimental data in terms of the light-induced changes of the adsorbed dye molecules angular distribution due to their exchange with the dye molecules from the liquid crystal bulk.