Light-propagation patterns in freestanding two-dimensional colloidal crystals

Sachiko Matsushita, Masatsugu Shimomura

    Research output: Contribution to journalArticlepeer-review

    19 Citations (Scopus)

    Abstract

    This paper reports the preparation of freestanding two-dimensional (2D) particle arrays, which fine particles are packed in highly dense and oriented manner. To fabricate freestanding 2D arrays, sintering process of the polymer particles (3.06, 1.034, and 0.491 μm diameter) was examined. The sintered 2D particle arrays on glass substrates were easily peeled off as a freestanding film by soaking into water. The freestanding 2D particle arrays were stable enough in room temperature. They show the iridescent colors due to their optical periodicity. To convince the layer number of those freestanding 2D particle arrays, fluorescent polystyrene particles were added in the arrays. Fluorescent light propagation patterns in the arrays suggest that the freestanding films were monolayers. The transmission spectra of the freestanding film were also examined.

    Original languageEnglish
    Pages (from-to)315-319
    Number of pages5
    JournalColloids and Surfaces A: Physicochemical and Engineering Aspects
    Volume284-285
    DOIs
    Publication statusPublished - 2006 Aug 15

    Keywords

    • Evanescent field
    • Particle
    • Photonic crystal
    • Self-assembly
    • Self-organized

    ASJC Scopus subject areas

    • Surfaces and Interfaces
    • Physical and Theoretical Chemistry
    • Colloid and Surface Chemistry

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