Real-Space Imaging of Nucleation and Growth in Colloidal Crystallization

by: U Gasser, Eric R Weeks, Andrew Schofield, PN Pusey, DA Weitz

Science, Vol. 292, No. 5515. (13 April 2001), pp. 258-262.

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Abstract

Crystallization of concentrated colloidal suspensions was studied in real space using laser scanning confocal microscopy. Direct imaging in three dimensions allowed identification and observation of nucleation and growth of crystalline regions, providing the first experimental measure of properties of the nucleating crystallites. By following their evolution, critical nuclei were identified, nucleation rates were determined, and the average surface tension of the crystal-liquid interface was measured. The structure of the nuclei was the same as the bulk solid phase, random-hexagonal-close-packed (rhcp), and their average shape was rather aspherical, with rough rather than faceted surfaces.

@article{gasser01, abstract = {Crystallization of concentrated colloidal suspensions was studied in real space using laser scanning confocal microscopy. Direct imaging in three dimensions allowed identification and observation of nucleation and growth of crystalline regions, providing the first experimental measure of properties of the nucleating crystallites. By following their evolution, critical nuclei were identified, nucleation rates were determined, and the average surface tension of the crystal-liquid interface was measured. The structure of the nuclei was the same as the bulk solid phase, random-hexagonal-close-packed (rhcp), and their average shape was rather aspherical, with rough rather than faceted surfaces.}, author = {Gasser, U. and Weeks, Eric R. and Schofield, Andrew and Pusey, P. N. and Weitz, D. A. }, citeulike-article-id = {1678133}, doi = {10.1126/science.1058457}, journal = {Science}, keywords = {colloids, confocal, crystals, nucleation, structure}, month = {April}, number = {5515}, pages = {258--262}, posted-at = {2007-09-20 05:29:33}, priority = {0}, title = {Real-Space Imaging of Nucleation and Growth in Colloidal Crystallization}, url = {http://dx.doi.org/10.1126/science.1058457}, volume = {292}, year = {2001} }

RIS record

TY - JOUR ID - gasser01 L3 - citeulike-article-id:1678133 TI - Real-Space Imaging of Nucleation and Growth in Colloidal Crystallization JF - Science VL - 292 IS - 5515 SP - 258 EP - 262 N2 - Crystallization of concentrated colloidal suspensions was studied in real space using laser scanning confocal microscopy. Direct imaging in three dimensions allowed identification and observation of nucleation and growth of crystalline regions, providing the first experimental measure of properties of the nucleating crystallites. By following their evolution, critical nuclei were identified, nucleation rates were determined, and the average surface tension of the crystal-liquid interface was measured. The structure of the nuclei was the same as the bulk solid phase, random-hexagonal-close-packed (rhcp), and their average shape was rather aspherical, with rough rather than faceted surfaces. KW - colloids KW - confocal KW - crystals KW - nucleation KW - structure AU - Gasser, U AU - Weeks, Eric AU - Schofield, Andrew AU - Pusey, PN AU - Weitz, DA PY - 2001/04/13/ UR - http://dx.doi.org/10.1126/science.1058457 ER -

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