, Volume 81, Issue 5, pp 911-913
Date: 28 Jun 2005

Photonic properties of silicon-coated colloidal monolayers

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Abstract

The spectral dependence of the optical transmission through hexagonal monolayers of silica (a-SiO2) microspheres covered with different amounts of amorphous silicon (a-Si) is studied. The strong changes in the spectral transmissivity can be semi-quantitatively understood by the coupling of the incident electromagnetic field to photonic modes of the combined structure consisting of the hexagonal lattice of a-SiO2 microspheres and a-Si.

PACS

78.66.-w; 81.16.Dn; 82.70.Dd; 42.70.Qs