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Article
Three-dimensional nanotransmission lines at optical frequencies: A recipe for broadband negative-refraction optical metamaterials
Departmental Papers (ESE)
  • Andrea Alù, University of Pennsylvania
  • Nader Engheta, University of Pennsylvania
Document Type
Journal Article
Date of this Version
1-1-2007
Comments
Reprinted in Physical Review B, Volume 75, Issue 2, January 2007, Article 024304, 20 pages.
Publisher URL: http://link.aps.org/abstract/PRB/v75/e024304
Abstract

We apply the optical nanocircuit concepts to design and analyze in detail a three-dimensional (3D) plasmonic nanotransmission line network that may act as a relatively broadband negative-refraction metamaterial at infrared and optical frequencies. After discussing the heuristic concepts in our theory, we show full-wave analytical results of the expected behavior of such materials, which show increased bandwidth and relative robustness to losses. The possibility and constraints of getting a 3D fully isotropic response are also explored and conditions for minimal losses and increased bandwidth are discussed. Full-wave analytical results for some design examples employing realistic plasmonic materials at infrared and optical frequencies are also presented, and the case of a subwavelength imaging system using a slab of this material is numerically investigated.

Keywords
  • metamaterials; optical materials; light refraction; refractive index; integrated optics; nanotechnology
Citation Information
Andrea Alù and Nader Engheta. "Three-dimensional nanotransmission lines at optical frequencies: A recipe for broadband negative-refraction optical metamaterials" (2007)
Available at: http://works.bepress.com/nader_engheta/64/