Abstract
Impurities affect the nucleation, growth, and structure of crystals. Here we report the effect of large, spherical, polymethylmethacrylate impurities on the crystal growth of monodisperse, hard, polymethylmethacrylate colloids in a density- and optically matching apolar solvent mixture. Crystal growth, initiated at the bottom of the sample, was studied by imaging sequences of two-dimensional xy slices in the plane of the impurity's center with a laser scanning confocal microscope. Impurities form the center of grain boundaries, and a single fluid particle layer around the impurity persists in all cases. The growth rate sensitively depends on the impurity's size. Crystal growth is inhibited to a greater extent near smaller impurities, pointing to local crystal frustration induced by the curvature of the impurity.
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@article{de_Villeneuve_2005, title={Colloidal Hard-Sphere Crystal Growth Frustrated by Large Spherical Impurities}, volume={309}, ISSN={1095-9203}, url={http://dx.doi.org/10.1126/science.1113207}, DOI={10.1126/science.1113207}, number={5738}, journal={Science}, publisher={American Association for the Advancement of Science (AAAS)}, author={de Villeneuve, Volkert W. A. and Dullens, Roel P. A. and Aarts, Dirk G. A. L. and Groeneveld, Esther and Scherff, Johannes H. and Kegel, Willem K. and Lekkerkerker, Henk N. W.}, year={2005}, month=aug, pages={1231–1233} }