+-Photorefractive CdSe and gold nanowire-doped liquid crystals and polymer-dispersed-liquid-crystal photonic crystals

I. C. Khoo, Yana Zhang Williams, B. Lewis, T. Mallouk

Research output: Contribution to journalArticle

29 Scopus citations

Abstract

We have observed enhanced photorefractive responses in CdSe doped nematic liquid crystal cells. The effective intensity dependent refractive index coefficients are on the order of 10 -2 cm 2 /Watt. Using polymer-dispersed mixture of these NLC, 3-D photonic crystals are fabricated by short-exposure direct holographic optical illumination. The resultant structure exhibits 3-D photonic crystal Bragg diffraction and multi-color reflections that can be electronically switched at millisecond speed. Enhanced diffraction efficiency is obtained by doping the liquid crystal with gold nanowires.

Original languageEnglish (US)
Pages (from-to)233-244
Number of pages12
JournalMolecular crystals and liquid crystals
Volume446
DOIs
StatePublished - Feb 24 2006

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All Science Journal Classification (ASJC) codes

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

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