### Abstract

A new theory based on the virial equation has been developed to study a system of hard non-spherical particles embedded into square-wells. The theory relies on a mapping of the pair correlation function of the system of interest onto that of spherical square-wells. This is a generalization of the Parsons-Lee theory of pure hard convex bodies. Comparisons show that this theory is superior to previous theories and incorporates them into a common framework. Competition between the excluded volume effect of repulsive forces and the condensation effect of attractive forces has been demonstrated. We have found three types of phase diagrams, among which one exhibits a nematic-nematic phase transition.

Original language | English |
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Pages (from-to) | 1695-1703 |

Number of pages | 9 |

Journal | Molecular Physics |

Volume | 96 |

Issue number | 11 |

Publication status | Published - 1999 |

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### ASJC Scopus subject areas

- Atomic and Molecular Physics, and Optics

### Cite this

*Molecular Physics*,

*96*(11), 1695-1703.

**Square-well fluid based decoupling approximation for system of hard non-spherical particles with spherical square-wells.** / Varga, S.; Williamson, Dave C.; Szalai, I.

Research output: Contribution to journal › Article

*Molecular Physics*, vol. 96, no. 11, pp. 1695-1703.

}

TY - JOUR

T1 - Square-well fluid based decoupling approximation for system of hard non-spherical particles with spherical square-wells

AU - Varga, S.

AU - Williamson, Dave C.

AU - Szalai, I.

PY - 1999

Y1 - 1999

N2 - A new theory based on the virial equation has been developed to study a system of hard non-spherical particles embedded into square-wells. The theory relies on a mapping of the pair correlation function of the system of interest onto that of spherical square-wells. This is a generalization of the Parsons-Lee theory of pure hard convex bodies. Comparisons show that this theory is superior to previous theories and incorporates them into a common framework. Competition between the excluded volume effect of repulsive forces and the condensation effect of attractive forces has been demonstrated. We have found three types of phase diagrams, among which one exhibits a nematic-nematic phase transition.

AB - A new theory based on the virial equation has been developed to study a system of hard non-spherical particles embedded into square-wells. The theory relies on a mapping of the pair correlation function of the system of interest onto that of spherical square-wells. This is a generalization of the Parsons-Lee theory of pure hard convex bodies. Comparisons show that this theory is superior to previous theories and incorporates them into a common framework. Competition between the excluded volume effect of repulsive forces and the condensation effect of attractive forces has been demonstrated. We have found three types of phase diagrams, among which one exhibits a nematic-nematic phase transition.

UR - http://www.scopus.com/inward/record.url?scp=0011775758&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0011775758&partnerID=8YFLogxK

M3 - Article

AN - SCOPUS:0011775758

VL - 96

SP - 1695

EP - 1703

JO - Molecular Physics

JF - Molecular Physics

SN - 0026-8976

IS - 11

ER -