DOI: 10.1063/1.474367. Entropic forces in binary hard sphere mixtures: Theory and simulation

Entropic forces in binary hard sphere mixtures: Theory and simulation

10.1063/1.474367

Crossref journal-article

AIP Publishing

The Journal of Chemical Physics (317)

Abstract

We perform extensive Monte Carlo simulations of binary hard-sphere mixtures (with diameter ratios of 5 and 10), to determine the entropic force between (1) a macrosphere and a hard wall, and (2) a pair of macrospheres. The microsphere background fluid (at volume fractions ranging from 0.1 to 0.34) induces an entropic force on the macrosphere(s); the latter component is at infinite dilution. We find good overall agreement, in both cases, with the predictions of a hypernetted chain-based theory for the entropic force. Our results also argue for the validity of the Derjaguin approximation relating the force between convex bodies to that between planar surfaces. The earlier Asakura-Oosawa theory, based on a simple geometric argument, is only accurate in the low-density limit.

Bibliography

Dickman, R., Attard, P., & Simonian, V. (1997). Entropic forces in binary hard sphere mixtures: Theory and simulation. The Journal of Chemical Physics, 107(1), 205â213.

Authors 3

Ronald Dickman (first)
Phil Attard (additional)
Veronika Simonian (additional)

References 22 Referenced 185

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Dates

Type	When
Created	23 years, 1 month ago (July 26, 2002, 8:29 a.m.)
Deposited	1 year, 6 months ago (Feb. 5, 2024, 1:45 p.m.)
Indexed	1 week, 4 days ago (Aug. 19, 2025, 6:45 a.m.)
Issued	28 years, 1 month ago (July 1, 1997)
Published	28 years, 1 month ago (July 1, 1997)
Published Print	28 years, 1 month ago (July 1, 1997)

Funders 0

None

BibTeX

@article{Dickman_1997, title={Entropic forces in binary hard sphere mixtures: Theory and simulation}, volume={107}, ISSN={1089-7690}, url={http://dx.doi.org/10.1063/1.474367}, DOI={10.1063/1.474367}, number={1}, journal={The Journal of Chemical Physics}, publisher={AIP Publishing}, author={Dickman, Ronald and Attard, Phil and Simonian, Veronika}, year={1997}, month=jul, pages={205–213} }

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