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Ultrathin metallic coatings can induce quantum levitation between nanosurfaces
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10.1063/1.4729822
/content/aip/journal/apl/100/25/10.1063/1.4729822
http://aip.metastore.ingenta.com/content/aip/journal/apl/100/25/10.1063/1.4729822
View: Figures

Figures

Image of FIG. 1.
FIG. 1.

Model system where repulsive Casimir-Lifshitz interaction can be induced between silica surfaces in toluene when one surface has an ultrathin gold nanocoating.

Image of FIG. 2.
FIG. 2.

The dielectric function at imaginary frequencies for SiO2 (silica),11 Bb (bromobenzene),12,13 Au (gold),5 and toluene.13 The static values have been displayed at the left vertical axis.

Image of FIG. 3.
FIG. 3.

The retarded and non-retarded Casimir-Lifshitz interaction free energy between a silica surface and a gold coated (b = 20 Å) silica surface in bromobenzene using different dielectric functions for bromobenzene from Munday et al. (M)12 and from van Zwol and Palasantzas (Z).13 The result of the Munday model gives repulsion only in the retarded treatment. In contrast, the van Zwol model gives repulsion in both the retarded and non-retarded limits.

Image of FIG. 4.
FIG. 4.

The retarded Casimir-Lifshitz interaction free energy between a silica surface and a gold coated silica surface in toluene using dielectric function for toluene from van Zwol and Palasantzas.13 The interaction is attractive at short distances and repulsive above a critical levitation distance.

Image of FIG. 5.
FIG. 5.

The retarded and nonretarded Casimir-Lifshitz interaction free energy between a silica surface and a gold coated silica surface in toluene using dielectric function for toluene from van Zwol and Palasantzas.13 The nonretarded interaction between thick gold films and silica across toluene is attractive for all distances. The other examples considered (nonretarded and retarded for the case of 20 Å gold film and retarded with thick gold films) all cross over to repulsion above a critical distance.

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/content/aip/journal/apl/100/25/10.1063/1.4729822
2012-06-19
2014-04-24
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Ultrathin metallic coatings can induce quantum levitation between nanosurfaces
http://aip.metastore.ingenta.com/content/aip/journal/apl/100/25/10.1063/1.4729822
10.1063/1.4729822
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