Chiral metamaterials reduce the attractive Casimir force

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Abstract

In our previous work [R. Zhao, J. Zhou, Th. Koschny, E. N. Economou, and C. M. Soukoulis, Phys. Rev. Lett. 103, 103602 (2009)], we demonstrated theoretically that one can obtain repulsive Casimir forces and stable nanolevitations by using chiral metamaterials if the chirality is strong enough. In our recent work [R. Zhao, Th. Koschny, E.N. Economou, and C.M. Soukoulis, Phys. Rev. B 81, 235126 (2010)], we checked some chiral metamaterial designs and found that the artificial chiral metamaterials constructed by passive materials is very difficult to reach the critical chirality to realize repulsive Casimir force. Therefore, in this paper, we give a four-folded rotated Ω-particle chiral metamaterial as an example, use the effective medium approximation to retrieval the constitutive parameters, and take the same procedure as we did before to see how much the chiral metamaterial can reduce the attractive force. It shows that this un-optimized chiral metamaterial can reduce the Casimir attraction by 70%.

Salvato in:
Autori: Rongkuo Zhao iD (Iowa State University; Beijing Normal University; Ames National Laboratory); Thomas Koschny iD (University of Crete; Iowa State University; Ames National Laboratory); Eleftherios N. Economou iD (University of Crete); Costas M. Soukoulis iD (University of Crete; Iowa State University; Ames National Laboratory)
Pubblicato in: Proceedings of SPIE, the International Society for Optical Engineering/Proceedings of SPIE, vol. 7754, pp. 77540Z
Data di pubblicazione:19/08/2010
Editore:SPIE
Tipo di documento:Contributo a convegno
Lingua:inglese
DOI: 10.1117/12.862555
ISSN:0277-786X, 1996-756X
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Citazioni ricevute:1
Soggetti:
Quantum Electrodynamics and Casimir Effect (Physical Sciences > Physics and Astronomy > Atomic and Molecular Physics, and Optics)
Metamaterials and Metasurfaces Applications (Physical Sciences > Materials Science > Electronic, Optical and Magnetic Materials)
Quantum and Classical Electrodynamics (Physical Sciences > Physics and Astronomy > Atomic and Molecular Physics, and Optics)
chiral metamaterials, Casimir force, repulsive Casimir force, effective medium theory
Identificativi: OpenAlex W2091729530

Dati dell'indice centrale: OpenAlex (licenza CC0).

Riassunto:In our previous work [R. Zhao, J. Zhou, Th. Koschny, E. N. Economou, and C. M. Soukoulis, Phys. Rev. Lett. 103, 103602 (2009)], we demonstrated theoretically that one can obtain repulsive Casimir forces and stable nanolevitations by using chiral metamaterials if the chirality is strong enough. In our recent work [R. Zhao, Th. Koschny, E.N. Economou, and C.M. Soukoulis, Phys. Rev. B 81, 235126 (2010)], we checked some chiral metamaterial designs and found that the artificial chiral metamaterials constructed by passive materials is very difficult to reach the critical chirality to realize repulsive Casimir force. Therefore, in this paper, we give a four-folded rotated Ω-particle chiral metamaterial as an example, use the effective medium approximation to retrieval the constitutive parameters, and take the same procedure as we did before to see how much the chiral metamaterial can reduce the attractive force. It shows that this un-optimized chiral metamaterial can reduce the Casimir attraction by 70%.
ISSN:0277-786X
1996-756X
DOI:10.1117/12.862555