Title: Large-scale synthesis of high-purity, one-dimensional alpha-Al2O3 structures
Authors: Proost, J ×
Van Boxel, Steven #
Issue Date: Oct-2004
Publisher: Royal soc chemistry
Series Title: Journal of materials chemistry vol:14 issue:20 pages:3058-3062
Abstract: Nanostructures of alpha-Al2O3 were successfully synthesized by simple evaporation of the commercial high-purity oxide powders, followed by vapour condensation onto a sapphire substrate under controlled conditions of supersaturation without the presence of a catalyst. Synthesis was carried out in a specially designed reactor equipped with a laser set-up that allows monitoring of the growth process in situ. Detailed in situ interferometric and high-resolution substrate curvature measurements revealed, for the first time, that the growth of these one-dimensional structures is driven by a mechanical stress, which develops in an initially continuous, two-dimensional layer. This interaction between chemical activity and mechanical stress is shown to provide an important additional parameter to actively control the large-scale synthesis of one-dimensional oxide structures.
ISSN: 0959-9428
Publication status: published
KU Leuven publication type: IT
Appears in Collections:Department of Materials Engineering - miscellaneous
× corresponding author
# (joint) last author

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