Physics – Quantum Physics
Scientific paper
2009-12-11
Physical Review Letters, Vol. 104, No. 16, 160402 (2010)
Physics
Quantum Physics
Scientific paper
10.1103/PhysRevLett.104.160402
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 consiting 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.
Capasso Federico
Joannopoulos John D.
Johnson Steven G.
McCauley Alexander P.
Rodriguez Alejandro W.
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