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Nontouching Nanoparticle Diclusters Bound by Repulsive and Attractive Casimir Forces

Author(s)
Rodriguez, Alejandro W.; McCauley, Alexander Patrick; Woolf, David; Capasso, Federico; Joannopoulos, John D.; Johnson, Steven G.; ... Show more Show less
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Abstract
We present a scheme for obtaining stable Casimir suspension of dielectric nontouching objects immersed in a fluid, validated here in various geometries consisting of ethanol-separated dielectric spheres and semi-infinite slabs. Stability is induced by the dispersion properties of real dielectric (monolithic) materials. A consequence of this effect is the possibility of stable configurations (clusters) of compact objects, which we illustrate via a molecular two-sphere dicluster geometry consisting of two bound spheres levitated above a gold slab. Our calculations also reveal a strong interplay between material and geometric dispersion, and this is exemplified by the qualitatively different stability behavior observed in planar versus spherical geometries.
Date issued
2010-04
URI
http://hdl.handle.net/1721.1/58733
Department
Massachusetts Institute of Technology. Department of Mathematics; Massachusetts Institute of Technology. Department of Physics
Journal
Physical Review Letters
Publisher
American Physical Society
Citation
Rodriquez, Alejandro W. et al. "Nontouching Nanoparticle Diclusters Bound by Repulsive and Attractive Casimir Forces." Physical Review Letters 104.16 (2010): 160402. © 2010 The American Physical Society
Version: Final published version
ISSN
0031-9007

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