| Issue |
Europhys. Lett.
Volume 42, Number 2, April II 1998
|
|
|---|---|---|
| Page(s) | 221 - 226 | |
| Section | Cross-disciplinary physics and related areas of science and technology | |
| DOI | https://doi.org/10.1209/epl/i1998-00227-1 | |
| Published online | 01 September 2002 | |
Depletion forces between two spheres in a rod solution
1
Department of Physics,
UCSB,
California, 93106 9530, USA
2
Materials Research Laboratory,
UCSB,
California, 93106, USA
3
RP-CNRS, Complex Fluid Laboratory UMR 166,
Cranbury, NJ 08512–7500, USA
Received:
4
August
1997
Accepted:
25
February
1998
We study the depletion interaction
between spherical particles of radius R immersed in a dilute solution of
rigid rods of length L. The computed interaction potential
is, within numerical accuracy, exact for any value of
L/R. In particular we find that for 
, the depth of the
depletion well is smaller than the prediction of the
Derjaguin approximation.
Our results bring new light into the discussion on the lack of phase
separation in colloidal mixtures of spheres and rods.
PACS: 82.70.Dd – Colloids / 64.75.+g – Solubility, segregation, and mixing; phase separation
© EDP Sciences, 1998
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