Issue |
Europhys. Lett.
Volume 63, Number 2, July 2003
|
|
---|---|---|
Page(s) | 233 - 239 | |
Section | Condensed matter: structure, mechanical and thermal properties | |
DOI | https://doi.org/10.1209/epl/i2003-00517-6 | |
Published online | 01 November 2003 |
Depletion potentials near geometrically structured substrates
1
Max-Planck-Institut für Metallforschung -
Heisenbergstr. 3 D-70569 Stuttgart, Germany
2
Institut für Theoretische und Angewandte Physik,
Universität Stuttgart
Pfaffenwaldring 57, D-70569 Stuttgart, Germany
3
Stranski-Laboratorium für Physikalische und
Theoretische Chemie, Sekretariat TC7 Technische Universität
Berlin - Strasse des 17. Juni 124, D-10623 Berlin, Germany
Received:
13
February
2003
Accepted:
16
May
2003
Using the recently developed so-called White Bear version of
Rosenfeld's Fundamental Measure Theory we calculate the depletion
potentials between a hard-sphere colloidal particle in a solvent
of small hard spheres and simple models of geometrically
structured substrates: a right-angled wedge or edge. In the wedge
geometry, there is a strong attraction beyond the corresponding
one near a planar wall that significantly influences the
structure of colloidal suspensions in wedges. In accordance with
an experimental study, for the edge geometry we find a
free-energy barrier of the order of several which
repels a big colloidal particle from the edge.
PACS: 61.20.Gy – Theory and models of liquid structure / 82.70.Dd – Colloids
© EDP Sciences, 2003
Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.
Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.
Initial download of the metrics may take a while.