|Publisher DOI:||10.1111/jace.16012||Title:||High-temperature stable inverse opal photonic crystals via mullite-sol-gel infiltration of direct photonic crystals||Language:||English||Authors:||Bueno, Priscila
Furlan, Kaline P.
|Keywords:||high-temperature applications;infiltration, mullite sol-gel;photonic crystals||Issue Date:||3-Dec-2018||Publisher:||Wiley-Blackwell||Source:||Journal of the American Ceramic Society 2 (102): 1- 9 (2018-12-03)||Journal:||Journal of the American Ceramic Society||Abstract (english):||
Three-dimensionally ordered macroporous materials for photonic or refractory applications have been developed by an innovative approach based on mullite sol-gel infiltration of direct photonic crystals followed by burn-out and calcination. Direct photonic crystals were obtained using polystyrene spheres templates either by vertical convective self-assembly or by drop casting. The samples were then infiltrated by spin coating with mullite sol-gels prepared with two different compositions (74 wt.% Al 2 O 3 , 26 wt.% SiO 2 and 80 wt.% Al2O 3 , 20 wt.% SiO 2 ). The inverse opal photonic crystals prepared with both sol-gels presented a highly ordered porosity and the high-alumina composition showed stability up to 1500°C. After inversion of the structure (polymeric template burn-out), the high-alumina composition showed roundness of the PS templated pores closer to an ideal sphere (Ø = 0.967) when compared to the low-alumina composition (Ø = 0.954). Although the inverse opal photonic crystals did not present a photonic bandgap, they showed structural stability at high temperatures, which enable their application as refractory materials.
|URI:||http://hdl.handle.net/11420/2303||DOI:||10.15480/882.2178||ISSN:||0002-7820||Institute:||Keramische Hochleistungswerkstoffe M-9||Document Type:||Article||Project:||SFB 986: Teilprojekt C5 - Oxidische Hochtemperatur-Schutzschichtsysteme mittels angepasster Porenstruktur||License:||CC BY-NC 4.0 (Attribution-NonCommercial)|
|Appears in Collections:||Publications with fulltext|
Show full item record
Files in This Item:
|Bueno_et_al-2018-Journal_of_the_American_Ceramic_Society.pdf||Verlags-PDF||1,93 MB||Adobe PDF||View/Open|
checked on Sep 22, 2021
checked on Sep 22, 2021
checked on Sep 18, 2021
Note about this record
Cite this record
This item is licensed under a Creative Commons License