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Liquid-crystal-mediated force between a cylindrical nanoparticle and substrate
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Cheung, David L. and Allen, M. P. (2007) Liquid-crystal-mediated force between a cylindrical nanoparticle and substrate. Physical Review E, Vol. 76 (No.4 Part 1). doi:10.1103/PhysRevE.76.041706 ISSN 1539-3755.
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Official URL: http://dx.doi.org/10.1103/PhysRevE.76.041706
Abstract
Using classical density functional theory, the structure of a molecular fluid around a cylindrical nanoparticle near a solid substrate is studied. The solvent-mediated force between the nanoparticle and the substrate is calculated in both the nematic and isotropic phases of the solvent. In the nematic phase, the force is short ranged and arises due to interaction between high-density regions near the substrate and nanoparticle. In the isotropic phase, the formation of a nematic bridge between the substrate and nanoparticle gives rise to an attractive force between them. The potential between the nanoparticle and substrate as a function of separation calculated numerically is compared to that calculated from the Derjaguin approximation. In the isotropic phase these are found to be in reasonable agreement at low separations, while the agreement is poorer in the nematic phase.
Item Type: | Journal Article | ||||
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Subjects: | Q Science > QC Physics | ||||
Divisions: | Faculty of Science, Engineering and Medicine > Science > Physics | ||||
Journal or Publication Title: | Physical Review E | ||||
Publisher: | American Physical Society | ||||
ISSN: | 1539-3755 | ||||
Official Date: | 25 October 2007 | ||||
Dates: |
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Volume: | Vol. 76 | ||||
Number: | No.4 Part 1 | ||||
Number of Pages: | 7 | ||||
DOI: | 10.1103/PhysRevE.76.041706 | ||||
Status: | Peer Reviewed | ||||
Publication Status: | Published | ||||
Access rights to Published version: | Restricted or Subscription Access |
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