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Phase-Transitions In Molecular Fluids - The Restricted Orientation Model

Rickayzen, Gerald (1993) Phase-Transitions In Molecular Fluids - The Restricted Orientation Model. Molecular Physics, 80 (5). pp. 1093-1103. ISSN 0026-8976. (doi:10.1080/00268979300102901) (The full text of this publication is not currently available from this repository. You may be able to access a copy if URLs are provided) (KAR id:20623)

The full text of this publication is not currently available from this repository. You may be able to access a copy if URLs are provided.
Official URL:
http://dx.doi.org/10.1080/00268979300102901

Abstract

The structure of a confined fluid of hard circular cylinders confined to a slit is studied using a simple theory in the context of a restricted orientation model; previous work is extended to higher densities. It is shown that, as the density increases, the fluid within the central region of the slit undergoes phase transitions which depend on the ratio, l/d, of the length to the diameter of the cylinders, and these transitions are interpreted in terms of the bulk behaviour of the fluid. When l/d is 0.25, the bulk fluid first undergoes a first-order isotropic-nematic transition as the density increases and then makes a transition to a spatially ordered phase. On the other hand when l/d is 0.8, the fluid undergoes a transition to a spatially ordered phase and does not pass through a nematic phase at all. These results are qualitatively in agreement with results obtained by Frenkel and Mulder from the simulation of hard ellipsoids. The limitations of the model are discussed and suggestions made for modifications to improve upon the quantitative predictions of the model at high densities.

Item Type: Article
DOI/Identification number: 10.1080/00268979300102901
Subjects: Q Science
Divisions: Divisions > Division of Natural Sciences > Physics and Astronomy
Depositing User: E.C. Henry-Duru
Date Deposited: 05 Oct 2009 17:12 UTC
Last Modified: 05 Nov 2024 09:58 UTC
Resource URI: https://kar.kent.ac.uk/id/eprint/20623 (The current URI for this page, for reference purposes)

University of Kent Author Information

Rickayzen, Gerald.

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