Paper Title:
Effect of Photo-Isomerization of Azo Dyes on the Photonic Bandgap in Chiral Nematics
  Abstract

Chiral nematic liquid crystals prepared with Grandjean texture demonstrate a photonic bandgap whose central wavelength is proportional to the pitch length, P, of the liquid crystal and whose width is given by (ne – no)P. We show that methyl red doped chiral nematics undergo a shift in the photonic bandgap upon photo-isomerization. This shift is a result of (1) photo-induced change in anchoring energy on the nematic surface, and (2) change in the natural pitch length from the photo-isomerization of the azo dye.

  Info
Periodical
Solid State Phenomena (Volumes 181-182)
Chapter
IV. Applications of Liquid Crystals
Edited by
Yuan Ming Huang
Pages
257-260
DOI
10.4028/www.scientific.net/SSP.181-182.257
Citation
D. Statman, A. Jockers, D. Brennan, "Effect of Photo-Isomerization of Azo Dyes on the Photonic Bandgap in Chiral Nematics", Solid State Phenomena, Vols. 181-182, pp. 257-260, 2012
Online since
November 2011
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Price
$32.00
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