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)
Year published
2008
Metadata
Show full item recordAbstract
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 ...
View more >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.
View less >
View more >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.
View less >
Journal Title
Journal of Materials Chemistry
Volume
18
Subject
Chemical Sciences not elsewhere classified
Chemical Sciences
Engineering