Departmental Papers (ESE)


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.

Document Type

Journal Article

Date of this Version

October 2006


Copyright American Physical Society. Reprinted from Physical Review Letters, Volume 97, Issue 15, Article 157403, October 2006, 4 pages.
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Date Posted: 07 December 2006

This document has been peer reviewed.