Repulsive Casimir Force in Chiral Metamaterials

TitleRepulsive Casimir Force in Chiral Metamaterials
Publication TypeJournal Article
Year of Publication2009
AuthorsZhao R, Zhou J, Koschny T, Economou EN, Soukoulis CM
Journal TitlePhysical Review Letters
Date Published09/04
ISBN Number0031-9007
Accession NumberISI:000269639800024

We demonstrate theoretically that one can obtain repulsive Casimir forces and stable nanolevitations by using chiral metamaterials. By extending the Lifshitz theory to treat chiral metamaterials, we find that a repulsive force and a minimum of the interaction energy possibly exist for strong chirality, under realistic frequency dependencies and correct limiting values (for zero and infinite frequencies) of the permittivity, permeability, and chiral coefficients.

URL<Go to ISI>://000269639800024