Varying the optical stop band of a three-dimensional photonic crystal by refractive index control

Zhong Ze Gu, Shoichi Kubo, Weiping Qian, Yasuaki Einaga, Donald A. Tryk, Akira Fujishima, Osamu Sato

    Research output: Contribution to journalArticlepeer-review

    95 Citations (Scopus)

    Abstract

    A method was developed to continuously adjust the position of the stop band of inverse opal by controlling the refractive index. The inverse opal films were fabricated using a coassembly of monodispersed polystyrene spheres and nanoparticles of silica and titania from aqueous suspensions followed by a calcination treatment. Varying the ratio of silica and titania in the suspensions gave the ability to finely adjust the refractive indices, which as a result changed the stop band.

    Original languageEnglish
    Pages (from-to)6751-6753
    Number of pages3
    JournalLangmuir
    Volume17
    Issue number22
    DOIs
    Publication statusPublished - 2001 Oct 30

    ASJC Scopus subject areas

    • Materials Science(all)
    • Condensed Matter Physics
    • Surfaces and Interfaces
    • Spectroscopy
    • Electrochemistry

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