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Title: On the possibility of Casimir repulsion using metamaterials

On the possibility of Casimir repulsion using metamaterials It is well known that the Casimir force between two half-spaces is dictated by their electromagnetic properties. In particular, when one of the half-spaces is mainly metallic or dielectric and the other is mainly magnetic, it is possible to show that the force is repulsive. This has attracted lots of interest towards the study of metamaterials (MMs) in the context of Casimir effect, as their magnetic activity might help bring the idea of Casimir repulsion from the theoretical realm to experimental verification. In this paper we investigate the possibility of repulsion when the MM magnetic permeability is given not by a Drude-Lorentz behavior, but by a model put forward by Pendry et al. [16]. After introducing the model and deriving the necessary formulas, we show that it is impossible to achieve repulsion with such a model and present a qualitative discussion of why this is so.
Authors:
Publication Date:
OSTI Identifier:962275
Report Number(s):LA-UR-08-06958; LA-UR-08-6958
TRN: US200919%%39
DOE Contract Number:AC52-06NA25396
Resource Type:Journal Article
Data Type:
Resource Relation:Journal Name: Journal of Physics A
Research Org:Los Alamos National Laboratory (LANL)
Sponsoring Org:DOE
Country of Publication:United States
Language:English
Subject: 71; CASIMIR EFFECT; DIELECTRIC MATERIALS; MAGNETIC SUSCEPTIBILITY; VERIFICATION