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  • Structural and optical characterization of 3D binary colloidal crystal and inverse opal films prepared by direct co-deposition

    Author(s)
    Wang, Jianjun
    Ahl, Stefanie
    Li, Qin
    Kreiter, Maximilian
    Neumann, Thomas
    Burkert, Klaus
    Knoll, Wolfgang
    Jonas, Ulrich
    Griffith University Author(s)
    Li, Qin
    Year published
    2008
    Metadata
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    Abstract
    Colloidal particles of two sizes have been co-deposited from mixed suspensions by vertical transfer to prepare binary colloidal crystals (bCC) and inverse opals (IO) with long-range ordering, as deduced from structural characterization by SEM and Vis-NIR spectroscopy. As such, the described procedure allows hierarchical structure formation with colloidal particle mixtures by vertical lifting deposition in a single step. The particular features of the lattice geometries in these binary structures was theoretically analyzed. From the obtained silica IO templates, gold-silica hybrid IOs and gold opal replicas with hierarchical ...
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    Colloidal particles of two sizes have been co-deposited from mixed suspensions by vertical transfer to prepare binary colloidal crystals (bCC) and inverse opals (IO) with long-range ordering, as deduced from structural characterization by SEM and Vis-NIR spectroscopy. As such, the described procedure allows hierarchical structure formation with colloidal particle mixtures by vertical lifting deposition in a single step. The particular features of the lattice geometries in these binary structures was theoretically analyzed. From the obtained silica IO templates, gold-silica hybrid IOs and gold opal replicas with hierarchical pore structures were fabricated. The gold-silica hybrid IOs showed in their Vis-NIR spectra a plasmonic response upon refractive index changes of the surrounding medium, which may be exploited for chemo- and biosensing applications.
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    Journal Title
    Journal of Materials Chemistry
    Volume
    18
    DOI
    https://doi.org/10.1039/b715329e
    Subject
    Chemical Sciences not elsewhere classified
    Chemical Sciences
    Engineering
    Publication URI
    http://hdl.handle.net/10072/61408
    Collection
    • Journal articles

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