Synthesis and optical properties of opal and inverse opal photonic crystals

Department of Electronics and Electrical Engineering, University of Glasgow, Glasgow G12 8QQ, Scotland, UK; Department of Chemistry, University of Glasgow, Glasgow G12 8QQ, Scotland, UK
Synthetic Metals (Impact Factor: 2.22). 01/2001; DOI: 10.1016/S0379-6779(00)00417-3
Source: OAI

ABSTRACT We describe the synthesis of two complementary photonic crystals: opal and an inverted opal structure consisting of air spheres in a titania matrix. From optical measurements and comparison with the literature, the mechanical strength and effective refractive index are increased by sintering for opal and because of compression for the inverse opal. However, this is at the expense of reducing the PBG in the [1 1 1] direction.

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