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TiO2-SiO2 one-dimensional photonic crystals of controlled porosity by glancing angle physical vapour deposition

AuthorsGonzález-García, Lola; Lozano, Gabriel ; Barranco, Ángel ; Míguez, Hernán ; González-Elipe, Agustín R.
Issue Date2010
PublisherRoyal Society of Chemistry (Great Britain)
CitationJournal of Materials Chemistry 20: 6408- 6412 (2010)
AbstractHerein we present a synthetic route to attain porous one-dimensional photonic crystals of high optical quality. The method employed, based on the alternate deposition of TiO2 and SiO2 porous layers by glancing angle physical vapour deposition, yields a highly accessible interconnected pore network throughout the entire multilayer structure. Furthermore, it allows a strict control over the average size and density of the interstitial sites, which results in the precise tuning of the refractive index of the individual layers and thus of the optical response of the ensemble. The controlled environmental response of the multilayer is confirmed by the optical monitoring of the infiltration of liquids of different refractive index. © 2010 The Royal Society of Chemistry.
Identifiersdoi: 10.1039/c0jm00680g
issn: 0959-9428
Appears in Collections:(ICMS) Artículos
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