Nontouching Nanoparticle Diclusters Bound by Repulsive and Attractive Casimir Forces
McCauley, Alexander P.
Joannopoulos, J. D.
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CitationRodriguez, Alejandro W., Alexander P. McCauley, David Woolf, Federico Capasso, J. D. Joannopoulos, and Steven G. Johnson. 2010. “Nontouching Nanoparticle Diclusters Bound by Repulsive and Attractive Casimir Forces.” Physical Review Letters 104 (16) (April 19). doi:10.1103/physrevlett.104.160402.
AbstractWe 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.
Citable link to this pagehttp://nrs.harvard.edu/urn-3:HUL.InstRepos:26370382
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