Enhanced structural and phase stability of titania inverse opals
Pasquarelli RM, Lee HS, Kubrin R, Zierold R, Petrov AY, Nielsch K, Schneider GA, Eich M, Janssen R (2015)
Publication Type: Journal article
Publication year: 2015
Journal
Book Volume: 35
Pages Range: 3103-3109
Journal Issue: 11
DOI: 10.1016/j.jeurceramsoc.2015.04.041
Abstract
The applications and processing of nanostructured materials at high temperatures require stability of their morphology. However, in such environments (>1000. °C), these structures are prone to significant undesired microstructural changes that result in a loss of functional properties. The thermal stability of titania inverse opal films, prepared from self-assembled templates of monodisperse polystyrene spheres by infiltration utilizing atomic layer deposition and subsequent calcination, was assessed. Resistance to grain growth and a shift in the anatase-to-rutile transformation to higher temperatures was observed, with dramatic stability under vacuum. Vacuum annealed samples retained the anatase phase and exhibited minimal grain growth even after 3. h at 1300. °C. Photonic properties were retained until the transformation onset. The remarkable resistance was attributed to inhibition of surface diffusion and structure-substrate constraints. In addition to being technologically enabling, the results provide further insight into the titania system and its phase transformation mechanism.
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APA:
Pasquarelli, R.M., Lee, H.S., Kubrin, R., Zierold, R., Petrov, A.Y., Nielsch, K.,... Janssen, R. (2015). Enhanced structural and phase stability of titania inverse opals. Journal of the European Ceramic Society, 35(11), 3103-3109. https://doi.org/10.1016/j.jeurceramsoc.2015.04.041
MLA:
Pasquarelli, Robert M., et al. "Enhanced structural and phase stability of titania inverse opals." Journal of the European Ceramic Society 35.11 (2015): 3103-3109.
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