Tunneling of Electromagnetic Energy through Subwavelength Channels and Bends using ε-Near-Zero Materials
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Copyright American Physical Society. Reprinted from Physical Review Letters, Volume 97, Issue 15, Article 157403, October 2006, 4 pages.
Publisher URL: http://dx.doi.org/10.1103/PhysRevLett.97.157403
Abstract
In this Letter, we demonstrate theoretically that electromagnetic waves can be "squeezed" and tunneled through very narrow channels filled with ε-near-zero (ENZ) materials. We show that the incoming planar wave front is replicated at the output interface, independently of the specific geometry of the channel. A closed analytical formula is derived for the scattering parameters of a particular class of geometries. It is discussed that in some cases the isotropy of the ENZ material may not be an issue. A metamaterial realization of an anisotropic ENZ material is suggested and numerically studied.
Suggested Citation
Mario Silveirinha and Nader Engheta. "Tunneling of Electromagnetic Energy through Subwavelength Channels and Bends using ε-Near-Zero Materials" Departmental Papers (ESE) (2006).
Available at: http://works.bepress.com/nader_engheta/12
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