Phototunable liquid crystalline photonic band gap material

Masaki Moritsugu, Sun Nam Kim, Tomonari Ogata, Takamasa Nonaka, Seiji Kurihara, Shoichi Kubo, Osamu Sato

    Research output: Contribution to journalArticlepeer-review


    We fabricated phototunable photonic crystals by infiltrating an azobenzen liquid crystal polymer (PLC) into voids of an opal or an inverse opal film. Azochromophores of PLC could be oriented perpendicular to the polarization direction of incident light, causing a change in refractive index of the PLC domain. Consequently, photonic band gap could be reversibly shifted by using the photo-induced molecular orientation. In addition, the photonic band gap in the inverse opal film was sifted larger than that in opal.

    Original languageEnglish
    Pages (from-to)111-119
    Number of pages9
    JournalMolecular crystals and liquid crystals
    Issue number1
    Publication statusPublished - 2006 Nov 1


    • Inverse opal
    • Opal
    • Photonic crystal

    ASJC Scopus subject areas

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


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