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Fabrication of 3D Photonic Crystals of Ellipsoids: Convective Self-Assembly in Magnetic Field

Authors

  • Tao Ding,

    1. Key Laboratory of Photochemistry Center for Molecular Science Institute of Chemistry Chinese Academy of Sciences Beijing 100190 (P.R. China)
    2. Graduate University of the Chinese Academy of Sciences Beijing 100039 (P.R. China)
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  • Kai Song,

    Corresponding author
    1. Key Laboratory of Photochemistry Center for Molecular Science Institute of Chemistry Chinese Academy of Sciences Beijing 100190 (P.R. China)
    • Key Laboratory of Photochemistry Center for Molecular Science Institute of Chemistry Chinese Academy of Sciences Beijing 100190 (P.R. China).
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  • Koen Clays,

    Corresponding author
    1. Department of Chemistry University of Leuven Celestijnenlaan 200D, Leuven 3001 (Belgium)
    • Department of Chemistry University of Leuven Celestijnenlaan 200D, Leuven 3001 (Belgium).
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  • Chen-Ho Tung

    1. Key Laboratory of Photochemistry Center for Molecular Science Institute of Chemistry Chinese Academy of Sciences Beijing 100190 (P.R. China)
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Abstract

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Three-dimensional photonic crystals of ellipsoidal colloidal particles are prepared by direct convective self-assembly from suspension with the aid of a magnet. The magnetic field provides the orientational order, which is additionally needed for these colloidal particles with symmetry lower than spherical. The positional order is provided by the convection, just as for spherical colloids.

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