Formation mechanism or two-dimensional patterns from binary colloidal system

T. Sawadaishi, N. Obata, M. Yoneyama, Masatsugu Shimomura

    Research output: Contribution to conferencePaperpeer-review


    Previously, we have reported about two-dimensional patterning of nanoparticles by simply casting them on a solid substrates. We have found that a phase separation of particles spontaneously occurred as a macroscopic pattern when the mixture of different-sized nanoparticles was spread on a solid substrate under non-equilibrium condition. To clarify the role of the size of particles for pattern formation, size dependence of the patterning was investigated. From in-situ fluorescence microscopy, it was suggested that the periodicity of aggregates of particles near the edge of casting solution was affected by the diameter of nanoparticles. We consider that the periodicity is one of the most important factors for the phase separative pattern formation. Numerical simulations by using physical fluid dynamics suggested similar results.

    Original languageEnglish
    Number of pages1
    Publication statusPublished - 2006 Oct 19
    Event55th SPSJ Annual Meeting - Nagoya, Japan
    Duration: 2006 May 242006 May 26


    Other55th SPSJ Annual Meeting


    • Dissipative Structures
    • Mesoscopic Pattern
    • Nanoparticle
    • Self-organization

    ASJC Scopus subject areas

    • Engineering(all)


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