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Issue 4, 2002
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Abstract

Laser scanning confocal microscopy, advantageous as a non-destructive spatial imaging technique, has been used to probe the internal photonic crystal lattice structure of micron scale core–fluorescein-labeled shell–corona silica microspheres that had been crystallized within anisotropically etched relief patterns in the 100 surface of silicon wafers. Using this method it was possible to determine the three-dimensional positioning of individual microspheres that had been allowed to self-assemble within the confines of square and rectangular shaped pyramidal microwells with sub-micron lateral and vertical spatial resolution. This methodology confirmed that microspheres underwent vectorial crystal growth in the form of a face centered cubic lattice inside the pyramidal microwells in which the 100 face of the photonic crystal was oriented parallel to the 100 surface of the silicon wafer. Furthermore it was feasible to visualize both external and internal defects buried within photonic crystal lattices in the planarized opal-patterned chips.

Graphical abstract: Internal photonic crystal lattice structures of planarized opal-patterned chips probed by laser scanning confocal fluorescence microscopy

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Publication details

The article was received on 26 Nov 2001, accepted on 04 Feb 2002 and first published on 04 Mar 2002


Article type: Paper
DOI: 10.1039/B110826N
J. Mater. Chem., 2002,12, 966-969

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    Internal photonic crystal lattice structures of planarized opal-patterned chips probed by laser scanning confocal fluorescence microscopy

    V. Kitaev, S. Fournier-Bidoz, S. M. Yang and G. A. Ozin, J. Mater. Chem., 2002, 12, 966
    DOI: 10.1039/B110826N

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