Crystallization in Glassy Suspensions of Colloidal Hard Spheres

by: Willem K Kegel

Langmuir, Vol. 16 (2000), pp. 939-941.

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Abstract

Crystallization in suspensions of colloidal hard spheres with a volume fraction of 0.631+/-0.004, and a polydispersity of less than 3%, is studied experimentally. The mass density of the solvent is almost equal to that of the particles. Normal (1g-like) gravity conditions are simulated by centrifugation. It is shown that there is a limiting density of the quenched hard-sphere fluid, close or equal to the random close-packed density (with a volume fraction of 0.644+/-0.005), above which crystallization is no longer observed. The results rule out the possibility that gravitational stress in quenched colloidal hard-sphere fluids, with volume fractions lower than the one corresponding to random close packing of spheres, irreversibly induces a packing geometry in which crystallization is suppressed.

@article{KegelLangmuir2000, abstract = {Crystallization in suspensions of colloidal hard spheres with a volume fraction of 0.631+/-0.004, and a polydispersity of less than 3\%, is studied experimentally. The mass density of the solvent is almost equal to that of the particles. Normal (1g-like) gravity conditions are simulated by centrifugation. It is shown that there is a limiting density of the quenched hard-sphere fluid, close or equal to the random close-packed density (with a volume fraction of 0.644+/-0.005), above which crystallization is no longer observed. The results rule out the possibility that gravitational stress in quenched colloidal hard-sphere fluids, with volume fractions lower than the one corresponding to random close packing of spheres, irreversibly induces a packing geometry in which crystallization is suppressed.}, author = {Kegel, Willem K. }, citeulike-article-id = {494250}, journal = {Langmuir}, keywords = {colloids, crystallisation, glass, hard-sphere}, pages = {939--941}, posted-at = {2006-02-06 15:56:08}, priority = {2}, title = {Crystallization in Glassy Suspensions of Colloidal Hard Spheres}, volume = {16}, year = {2000} }

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TY - JOUR ID - KegelLangmuir2000 L3 - citeulike-article-id:494250 TI - Crystallization in Glassy Suspensions of Colloidal Hard Spheres JF - Langmuir VL - 16 SP - 939 EP - 941 N2 - Crystallization in suspensions of colloidal hard spheres with a volume fraction of 0.631+/-0.004, and a polydispersity of less than 3%, is studied experimentally. The mass density of the solvent is almost equal to that of the particles. Normal (1g-like) gravity conditions are simulated by centrifugation. It is shown that there is a limiting density of the quenched hard-sphere fluid, close or equal to the random close-packed density (with a volume fraction of 0.644+/-0.005), above which crystallization is no longer observed. The results rule out the possibility that gravitational stress in quenched colloidal hard-sphere fluids, with volume fractions lower than the one corresponding to random close packing of spheres, irreversibly induces a packing geometry in which crystallization is suppressed. KW - colloids KW - crystallisation KW - glass KW - hard-sphere AU - Kegel, Willem PY - 2000/// ER -

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