Departmental Papers (ESE)


Here we discuss our recent numerical results concerning the robustness of the scattering cancellation effect produced by a plasmonic cloak with near-zero permittivity and correspondingly negative polarizability. Being based on an integral effect and on an intrinsically non-resonant phenomenon, we show how variations of the geometrical parameters of the design and changes in the background do not sensibly affect the invisibility properties of the plasmonic/metamaterial cloak. Design examples are presented and discussed in order to highlight this robustness and to provide some insights into this cloaking phenomenon, different from other cloaking techniques recently presented in the literature.

Document Type

Journal Article

Date of this Version

May 2008


Postprint version. An edited version of this paper was published by AGU. Copyright 2000 American Geophysical Union.
Alù, Andrea; Engheta, Nader, (2008), Robustness in Design and Background Variations in Metamaterial/Plasmonic Cloaking, Radio Science, Volume 43, Issue 4, Article RS4S01, May 2008.
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Date Posted: 13 June 2008

This document has been peer reviewed.