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Casimir-Polder force between anisotropic nanoparticles and gently curved surfaces

Author(s)
Bimonte, Giuseppe; Emig, Thorsten; Kardar, Mehran
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Abstract
The Casimir-Polder interaction between an anisotropic particle and a surface is orientation dependent. We study novel orientational effects that arise due to curvature of the surface for distances much smaller than the radii of curvature by employing a derivative expansion. For nanoparticles we derive a general short distance expansion of the interaction potential in terms of their dipolar polarizabilities. Explicit results are presented for nano-spheroids made of SiO[subscript 2] and gold, both at zero and at finite temperatures. The preferred orientation of the particle is strongly dependent on curvature, temperature, as well as material properties.
Date issued
2015-07
URI
http://hdl.handle.net/1721.1/97871
Department
Massachusetts Institute of Technology. Department of Civil and Environmental Engineering; Massachusetts Institute of Technology. Department of Physics
Journal
Physical Review D
Publisher
American Physical Society
Citation
Bimonte, Giuseppe, Thorsten Emig, and Mehran Kardar. “Casimir-Polder Force between Anisotropic Nanoparticles and Gently Curved Surfaces.” Physical Review D 92, no. 2 (July 17, 2015). © 2015 American Physical Society
Version: Final published version
ISSN
1550-7998
1550-2368

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