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. (The full text of this publication is not available from this repository)

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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
Subjects: Q Science
Divisions: Faculties > Science Technology and Medical Studies > School of Physical Sciences > Centre for Astrophysics and Planetary Sciences
Depositing User: E.C. Henry-Duru
Date Deposited: 05 Oct 2009 17:12
Last Modified: 04 Jun 2014 12:39
Resource URI: http://kar.kent.ac.uk/id/eprint/20623 (The current URI for this page, for reference purposes)
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