Tunneling of Electromagnetic Energy through Subwavelength Channels and Bends usingε-Near-Zero Materials | Zendy

Mário G. Silveirinha | Zendy; Nader Engheta | Zendy

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Tunneling of Electromagnetic Energy through Subwavelength Channels and Bends usingε-Near-Zero Materials

Author(s) -

Mário G. Silveirinha,

Nader Engheta

Publication year - 2006

Publication title -

physical review letters

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 3.688

H-Index - 673

eISSN - 1079-7114

pISSN - 0031-9007

DOI - 10.1103/physrevlett.97.157403

Subject(s) - planar , isotropy , quantum tunnelling , physics , metamaterial , anisotropy , scattering , energy (signal processing) , zero (linguistics) , realization (probability) , electromagnetic radiation , geometry , optics , algorithm , computer science , quantum mechanics , computer graphics (images) , mathematics , statistics , linguistics , philosophy

In this Letter, we demonstrate theoretically that electromagnetic waves can be "squeezed" and tunneled through very narrow channels filled with epsilon-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.

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