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Comparison of chiral metamaterial designs for repulsive Casimir force

Journal Article · · Physical Review. B, Condensed Matter and Materials Physics
 [1]; ;  [1];  [2]
  1. Ames Laboratory and Department of Physics and Astronomy, Iowa State University, Ames, Iowa 50011 (United States)
  2. Institute of Electronic Structure and Laser, FORTH, Department of Materials Science and Technology, University of Crete, Heraklion, 71110 Crete (Greece)

In our previous work [R. Zhao, J. Zhou, Th. Koschny, E. N. Economou, and C. M. Soukoulis, Phys. Rev. Lett. 103, 103602 (2009)], we found that repulsive Casimir forces could be realized by using chiral metamaterials if the chirality is strong enough. In this work, we check four different chiral metamaterial designs (i.e., Twisted-Rosettes, Twisted-Crosswires, Four-U-SRRs, and Conjugate-Swastikas) and find that the designs of Four-U-SRRs and Conjugate-Swastikas are the most promising candidates to realize repulsive Casimir force because of their large chirality and the small ratio of structure length scale to resonance wavelength.

OSTI ID:
21386743
Journal Information:
Physical Review. B, Condensed Matter and Materials Physics, Journal Name: Physical Review. B, Condensed Matter and Materials Physics Journal Issue: 23 Vol. 81; ISSN 1098-0121
Country of Publication:
United States
Language:
English

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