Abstract
Gem-quality blue opals consisting of ≈ 200 nm silica spheres are synthesized and incorporated with CdS nanoparticles by a solution technique. The opals with and without CdS are characterized by atomic force microscopy, scanning electron microscopy and conventional optical spectroscopic measurements. The possibility of producing 3-dimensional arrays of nano-sized materials and photonic crystals is supported by these experiments.
Published Version
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