Structure and Dynamics of Colloidal Suspensions Studied by Means of XPCS

• Authors: A. Patkowski , J. Gapinski , A. Fluerasu , P. Holmqvist , G. Meier , M. Lettinga , G. Nägele
• Languages of publication: EN

Abstracts

EN

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.

Keywords

EN

87.15.Vv; 83.10.Mj; 82.70.Dd

Discipline

• 83.10.Mj: Molecular dynamics, Brownian dynamics
• 82.70.Dd: Colloids
• 87.15.Vv: Diffusion

• Publisher: Institute of Physics, Polish Academy of Sciences
• Journal: Acta Physica Polonica A
• Year: 2008
• Volume: 114
• Issue: 2
• Pages: 339-350

Dates

published

2008-08

received

2007-09-24

Contributors

author

A. Patkowski

• Faculty of Physics, A. Mickiewicz University, Umultowska 85, 61-614 Poznań, Poland

author

J. Gapinski

• Faculty of Physics, A. Mickiewicz University, Umultowska 85, 61-614 Poznań, Poland

author

A. Fluerasu

• European Synchrotron Radiation Facility, Grenoble, France

author

P. Holmqvist

• Institut fűr Festkörperforschung, Forschungszentrum Jűlich, Jűlich, Germany

author

G. Meier

• Institut fűr Festkörperforschung, Forschungszentrum Jűlich, Jűlich, Germany

author

M. Lettinga

• Institut fűr Festkörperforschung, Forschungszentrum Jűlich, Jűlich, Germany

author

G. Nägele

• Institut fűr Festkörperforschung, Forschungszentrum Jűlich, Jűlich, Germany

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Identifiers

DOI

10.12693/APhysPolA.114.339