Photochemical switching behavior of azofunctionalized polymer liquid crystal/SiO2 composite photonic crystal

M. Moritsugu, S. N. Kim, T. Ogata, T. Nonaka, S. Kurihara, S. Kubo, H. Segawa, Osamu Sato

Research output: Contribution to journalArticle

21 Citations (Scopus)

Abstract

A photochemically tunable photonic crystal was prepared by infiltrating azopolymer liquid crystal in a Si O2 inverse opal structure. The Si O2 inverse opal film obtained reflected a light corresponding to the periodicity as well as the refractive indices of the inverse opal structure. Linearly polarized light irradiation shifted the reflection band to longer wavelength more than 15 nm. This is caused by the formation of anisotropic molecular orientation of the azopolymer. The switched state was stable in the dark, and the reversible switching of the reflection band can be achieved by the linearly and circularly polarized light irradiations.

Original languageEnglish
Article number153131
JournalApplied Physics Letters
Volume89
Issue number15
DOIs
Publication statusPublished - Oct 20 2006

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polarized light
liquid crystals
photonics
irradiation
composite materials
polymers
crystals
periodic variations
refractivity
wavelengths

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy (miscellaneous)

Cite this

Photochemical switching behavior of azofunctionalized polymer liquid crystal/SiO2 composite photonic crystal. / Moritsugu, M.; Kim, S. N.; Ogata, T.; Nonaka, T.; Kurihara, S.; Kubo, S.; Segawa, H.; Sato, Osamu.

In: Applied Physics Letters, Vol. 89, No. 15, 153131, 20.10.2006.

Research output: Contribution to journalArticle

Moritsugu, M. ; Kim, S. N. ; Ogata, T. ; Nonaka, T. ; Kurihara, S. ; Kubo, S. ; Segawa, H. ; Sato, Osamu. / Photochemical switching behavior of azofunctionalized polymer liquid crystal/SiO2 composite photonic crystal. In: Applied Physics Letters. 2006 ; Vol. 89, No. 15.
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