| Numéro |
J. Phys. IV France
Volume 10, Numéro PR7, May 2000
International Workshop on Dynamics in Confinement
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|---|---|---|
| Page(s) | Pr7-295 - Pr7-298 | |
| DOI | https://doi.org/10.1051/jp4:2000759 | |
International Workshop on Dynamics in Confinement
J. Phys. IV France 10 (2000) Pr7-295-Pr7-298
DOI: 10.1051/jp4:2000759
Van't Hoff Laboratory for Physical and Colloid Chemistry, Debye Institute, Utrecht University, Padualaan 8, 3584 Utrecht, The Netherlands
© EDP Sciences 2000
J. Phys. IV France 10 (2000) Pr7-295-Pr7-298
DOI: 10.1051/jp4:2000759
On Stokes-Einstein and Debye behaviour in colloidal fluids
G.H. Koenderink and A.P. PhilipseVan't Hoff Laboratory for Physical and Colloid Chemistry, Debye Institute, Utrecht University, Padualaan 8, 3584 Utrecht, The Netherlands
Abstract
We discuss recent experiments on tracer sphere diffusion in colloidal host suspensions. Stokes-Einstein behaviour (tracer diffusion inversely proportional to host viscosity) is observed at low host viscosities, i.e. the host suspension behaves as an effective fluid. At high host viscosities, however, tracer diffusion decouples from the viscosity and the host suspension behaves more like a static confining geometry.
© EDP Sciences 2000