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Quenched-annealed density functional theory for interfacial behavior of hard rods at a hard rod matrix
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Cheung, David L. and Schmidt, M. (Matthias). (2009) Quenched-annealed density functional theory for interfacial behavior of hard rods at a hard rod matrix. Journal of Chemical Physics, Vol.131 (No.21). p. 214705. ISSN 0021-9606
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Official URL: http://dx.doi.org/10.1063/1.3267728
Abstract
We consider a system of mobile hard rods that are immersed in an isotropic matrix of hard rods with quenched positions and orientations. Using quenched-annealed density functional theory the disorder-averaged excess free energy functional is approximated by an Onsager second virial form, which is valid in the limit of large length-to-thickness aspect ratio of the particles. We find that inside the bulk isotropic matrices the isotropic-nematic phase transition occurs at higher values of the chemical potential than in the pure system, shifted proportionally to the product of the matrix density and the matrix-fluid excluded volume. We investigate adsorption and penetration behavior of the annealed rods at the planar surface of a porous rod matrix, considering both perpendicular and parallel boundary conditions of the nematic director far from the surface. (C) 2009 American Institute of Physics. [doi:10.1063/1.3267728]
| Item Type: | Journal Article |
|---|---|
| Subjects: | Q Science > QC Physics T Technology > TJ Mechanical engineering and machinery |
| Divisions: | Faculty of Science > Chemistry |
| Library of Congress Subject Headings (LCSH): | Density functionals, Interfaces (Physical sciences), Thermodynamics, Nematic liquid crystals, Phase transformations (Statistical physics) |
| Journal or Publication Title: | Journal of Chemical Physics |
| Publisher: | American Institute of Physics |
| ISSN: | 0021-9606 |
| Date: | 7 December 2009 |
| Volume: | Vol.131 |
| Number: | No.21 |
| Number of Pages: | 7 |
| Page Range: | p. 214705 |
| Identification Number: | 10.1063/1.3267728 |
| Status: | Peer Reviewed |
| Publication Status: | Published |
| Access rights to Published version: | Restricted or Subscription Access |
| Funder: | Engineering and Physical Sciences Research Council (EPSRC), Hewlett-Packard Laboratories |
| URI: | http://wrap.warwick.ac.uk/id/eprint/16843 |
Data sourced from Thomson Reuters' Web of Knowledge
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