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An Avoidance Model for Short-Range Order Induced by Soft Repulsions in Systems of Rigid Rods

Published online by Cambridge University Press:  10 February 2011

Jining Han  and
Judith Herzfeld
Jining Han
Affiliation:
Dept. of Chemistry, Brandeis University, Waltham, MA, 02254–9110
Judith Herzfeld*
Affiliation:
Dept. of Chemistry, Brandeis University, Waltham, MA, 02254–9110
*
*Corresponding author
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Abstract

The effects of soft repulsions on hard particle systems are calculated using an avoidance model which improves upon the simple mean field approximation. The method not only yields a better free energy, but also gives an estimate for the short-range positional order induced by soft repulsions. The results indicate little short-range order for isotropically oriented rods. However, for parallel rods short-range order increases to significant levels as the particle axial ratio increases.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 463: Symposia EE – Statistical Mechanics in Physics and Biology , 1996 , 135
Copyright
Copyright © Materials Research Society 1997

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References

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