Structure and dynamics of colloidal suspensions studied by means of XPCS

被引：0
|
作者：
Patkowski, A. [1 ]
Gapinski, J. [1 ]
Fluerasu, A. [2 ]
Holmqvist, P. [3 ]
Meier, G. [3 ]
Lettinga, M. P. [3 ]
Naegele, G. [3 ]
机构：
[1] Adam Mickiewicz Univ Poznan, Fac Phys, PL-61614 Poznan, Poland
[2] European Synchrotron Radiat Facil, F-38043 Grenoble, France
[3] Forschungszentrum Julich, Inst Festkorperforsch, D-5170 Julich, Germany
来源：
ACTA PHYSICA POLONICA A | 2008年 / 114卷 / 02期
关键词：
D O I：
10.12693/APhysPolA.114.339
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
Structure and dynamics of suspensions of charged colloidal spheres in water were studied by means of small-angle X-ray scattering and X-ray photon correlation spectroscopy using synchrotron radiation. Experimentally obtained dependences on the scattering vector q of the structure factor S(q), short-time collective diffusion coefficient D(q) and hydrodynamic function H(q) were in good agreement with theoretical predictions. No effect of screening of the hydrodynamic interactions, suggested in the literature, was found. The conditions are discussed at which the maximum of the hydrodynamic function peak value H(q(m)) can be obtained experimentally.
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页码：339 / 350
页数：12
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