Abstract
The crystal growth process in colloidal nanocrystal systems is usually associated with the Ostwald-ripening mechanism. Here, we report on experimental evidence indicating that another crystal growth process took place in a colloidal nanocrystal system at room temperature. This crystal growth process is based on grain rotation among neighboring grains, resulting in a coherent grain–grain interface, which, by eliminating common boundaries, causes neighboring grains to coalesce, thereby forming a single larger nanocrystal. This phenomenon was observed in SnO2 nanocrystals (particle size ranging from 10 to 30 Å).
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@article{Leite_2003, title={Crystal growth in colloidal tin oxide nanocrystals induced by coalescence at room temperature}, volume={83}, ISSN={1077-3118}, url={http://dx.doi.org/10.1063/1.1605241}, DOI={10.1063/1.1605241}, number={8}, journal={Applied Physics Letters}, publisher={AIP Publishing}, author={Leite, E. R. and Giraldi, T. R. and Pontes, F. M. and Longo, E. and Beltrán, A. and Andrés, J.}, year={2003}, month=aug, pages={1566–1568} }