Departmental Papers (ESE)


We discuss the imaging properties of uniaxial epsilon-near-zero metamaterial slabs with possibly tilted optical axis, analyzing their subwavelength focusing properties as a function of the design parameters. We derive in closed analytical form the associated two-dimensional Green's function in terms of special cylindrical functions. For the near-field parameter ranges of interest, we are also able to derive a small-argument approximation in terms of simpler analytical functions. Our results, validated and calibrated against a full-wave reference solution, expand the analytical tools available for computationally efficient and physically incisive modeling and design of metamaterial-based subwavelength imaging systems.

Document Type

Journal Article

Date of this Version



Giuseppe Castaldi, Silvio Savoia, Vincenzo Galdi, Andrea Alù, & Nader Engheta. (2012). Analytical study of subwavelength imaging by uniaxial epsilon-near-zero metamaterial slabs. Physical Review B, 86(11), 115123. doi: 10.1103/PhysRevB.86.115123

©2012 American Physical Society



Date Posted: 09 May 2013

This document has been peer reviewed.