Collective dynamics in quasibidimensional colloidal suspensions

被引:31
|
作者
Acuna-Campa, H [1 ]
Carbajal-Tinoco, MD [1 ]
Arauz-Lara, JL [1 ]
Medina-Noyola, M [1 ]
机构
[1] Univ Autonoma San Luis Potosi, Inst Fis Manuel Sandoval Vallarta, San Luis Potosi 78000, Mexico
关键词
D O I
10.1103/PhysRevLett.80.5802
中图分类号
O4 [物理学];
学科分类号
0702 ;
摘要
We report the direct measurement by video microscopy of the Van Hove function of quasi-two-dimensional colloidal suspensions. Under these conditions of confinement, the effective interparticle potential exhibits an intermediate range attractive component. This is obtained by deconvoluting the measured pair correlation function using an inverse Monte Carlo method. The experimental dynamic behavior is well represented by a Brownian dynamics simulation, performed using the experimental pair potential and an effective quasi-two-dimensional short-time diffusion coefficient. [S0031-9007(98)06595-8].
引用
收藏
页码:5802 / 5805
页数:4
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