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Title: A comparative study of inverted-opal titania photonic crystals made from polymer and silica colloidal crystal templates

Abstract

Photonic crystals with an inverted-opal structure using polymer and silica colloidal crystal templates were prepared and compared. We show that the behaviors of the template during the removal process and heat treatment are determinant factors on the crystal formation. While both templates result in ordered macroporous structures, the optical quality in each case is quite different. The removal of the polymer template by sintering causes a large shrinkage of the inverted framework and produces a high density of cracks in the sample. With a silica template, sintering actually improves the quality of the inverted structure by enhancing the template's mechanical stability, helping increase the filling fraction, and consolidating the titania framework. The role of the other important factors such as preheating and multiple infiltrations is also investigated.

Authors:
; ; ;  [1];  [2]
  1. Departement de physique et d'astronomie, Universite de Moncton, Moncton E1A 3E9 (Canada)
  2. (China)
Publication Date:
OSTI Identifier:
20658073
Resource Type:
Journal Article
Resource Relation:
Journal Name: Journal of Applied Physics; Journal Volume: 96; Journal Issue: 11; Other Information: DOI: 10.1063/1.1806551; (c) 2004 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; COMPOSITE MATERIALS; CRACKS; CRYSTALS; HEAT TREATMENTS; OPALS; POLYMERS; POROUS MATERIALS; SHRINKAGE; SILICON COMPOUNDS; SINTERING; TITANIUM OXIDES

Citation Formats

Kuai, S.-L., Truong, V.-V., Hache, Alain, Hu, X.-F., and Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai 200050. A comparative study of inverted-opal titania photonic crystals made from polymer and silica colloidal crystal templates. United States: N. p., 2004. Web. doi:10.1063/1.1806551.
Kuai, S.-L., Truong, V.-V., Hache, Alain, Hu, X.-F., & Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai 200050. A comparative study of inverted-opal titania photonic crystals made from polymer and silica colloidal crystal templates. United States. doi:10.1063/1.1806551.
Kuai, S.-L., Truong, V.-V., Hache, Alain, Hu, X.-F., and Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai 200050. Wed . "A comparative study of inverted-opal titania photonic crystals made from polymer and silica colloidal crystal templates". United States. doi:10.1063/1.1806551.
@article{osti_20658073,
title = {A comparative study of inverted-opal titania photonic crystals made from polymer and silica colloidal crystal templates},
author = {Kuai, S.-L. and Truong, V.-V. and Hache, Alain and Hu, X.-F. and Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai 200050},
abstractNote = {Photonic crystals with an inverted-opal structure using polymer and silica colloidal crystal templates were prepared and compared. We show that the behaviors of the template during the removal process and heat treatment are determinant factors on the crystal formation. While both templates result in ordered macroporous structures, the optical quality in each case is quite different. The removal of the polymer template by sintering causes a large shrinkage of the inverted framework and produces a high density of cracks in the sample. With a silica template, sintering actually improves the quality of the inverted structure by enhancing the template's mechanical stability, helping increase the filling fraction, and consolidating the titania framework. The role of the other important factors such as preheating and multiple infiltrations is also investigated.},
doi = {10.1063/1.1806551},
journal = {Journal of Applied Physics},
number = 11,
volume = 96,
place = {United States},
year = {Wed Dec 01 00:00:00 EST 2004},
month = {Wed Dec 01 00:00:00 EST 2004}
}
  • No abstract prepared.
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  • Composite opal structures for nonlinear applications are obtained by infiltration with chalcogenide glasses As{sub 2}S{sub 3} and AsSe by precipitation from solution. Analysis of spatially resolved optical spectra reveals that the glass aggregates into submillimeter areas inside the opal. These areas exhibit large shifts in the optical stop bands by up to 80 nm, and by comparison with modelling are shown to have uniform glass filling factors of opal pores up to 40%. Characterization of the domain structure of the opals prior to infiltration by large area angle-resolved spectroscopy is an important step in the analysis of the properties ofmore » the infiltrated regions. {copyright} 2001 American Institute of Physics.« less