Langmuir, 24 (4), 1411 -1417, 2008. 10.1021/la702348c S0743-7463(70)02348-X
Web Release Date: January 8, 2008

Copyright © 2008 American Chemical Society

Forces between Cylindrical Nanoparticles in a Liquid Crystal

David L. Cheung and Michael P. Allen*

Department of Physics and Centre for Scientific Computing, University of Warwick, Coventry, CV4 7AL, United Kingdom

Received August 2, 2007

In Final Form: October 21, 2007

Abstract:

Using classical density functional theory, the forces between two cylindrical nanoparticles in a liquid crystal solvent are calculated. Both the nematic and isotropic phases of the solvent are considered. In the nematic phase, the interaction is highly anisotropic. At short range, changes in the defect structure around the cylinders leads to a complex interaction between them. In the isotropic phase, an attractive interaction arises due to overlap between halos of ordered fluid adsorbed on the surfaces of the cylinders.


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