Optical reorientation of nematic liquid crystals in the presence of photoisomerization

I. Jánossy, L. Szabados

Research output: Contribution to journalArticle

111 Citations (Scopus)


The optical reorientation of nematic liquid crystals doped with azo dyes is studied. It is shown that in the presence of absorption both the trans and cis isomers enhance significantly the optical torque; they contribute, however, with opposite signs to the net enhancement and tend to cancel each other’s effect. The anomalous angular dependence of optical reorientation reported by Zolotko et al. is explained by considering the photoinduced trans-cis equilibrium.

Original languageEnglish
Pages (from-to)4598-4604
Number of pages7
JournalPhysical Review E - Statistical Physics, Plasmas, Fluids, and Related Interdisciplinary Topics
Issue number4
Publication statusPublished - Jan 1 1998

ASJC Scopus subject areas

  • Statistical and Nonlinear Physics
  • Statistics and Probability
  • Condensed Matter Physics

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