Issue |
J. Phys. II France
Volume 3, Number 8, August 1993
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Page(s) | 1179 - 1184 | |
DOI | https://doi.org/10.1051/jp2:1993190 |
J. Phys. II France 3 (1993) 1179-1184
The effects of size polydispersity in nearly hard sphere colloids
Ichirou Moriguchi, Kyozi Kawasaki and Toshihiro KawakatsuDepartment of Physics, Kyushu University 33, Fukuoka 812, Japan
(Received 13 April 1993, accepted in final form 24 May 1993)
Abstract
We have investigated the effects of size polydispersity on glass transition in nearly hard sphere colloidal systems in non-equilibrium
condition after rapid compression by the Brownian dynamics simulation method. The interparticle interaction is chosen as the
Yukawa potential and the size distribution of colloidal particles is assumed to be Gaussian. We found that the critical standard
deviation of the size distribution divided by the mean size is about
% above which no crystallization takes place for arbitrary density, and also found that there exists a disordered state even
with a smaller size polydispersity than the critical value in the high density region, as is observed in the real colloidal
suspensions. We also mention the possibility that by performing Browian dynamics simulations on colloidal systems with a sufficiently
reduced level of thermal noise, one can observe glass transition.
64.70P - 82.70D - 81.30D
© Les Editions de Physique 1993