Spectral theory of a Neumann-Poincare-type operator and analysis of cloaking due to anomalous localized resonance

TL;DR

This paper provides a rigorous mathematical analysis of cloaking via anomalous localized resonance (CALR), identifying conditions under which electromagnetic power dissipation diverges, thus explaining when cloaking occurs in plasmonic structures.

Contribution

It introduces a necessary and sufficient condition for CALR based on the Newtonian potential, applicable to general structures and explicitly for concentric disks.

Findings

CALR occurs for sources inside a critical radius under certain conditions

CALR does not occur for sources outside the critical radius

The paper offers a mathematical criterion for cloaking due to anomalous localized resonance

Abstract

The aim of this paper is to give a mathematical justification of cloaking due to anomalous localized resonance (CALR). We consider the dielectric problem with a source term in a structure with a layer of plasmonic material. Using layer potentials and symmetrization techniques, we give a necessary and sufficient condition on the fixed source term for electromagnetic power dissipation to blow up as the loss parameter of the plasmonic material goes to zero. This condition is written in terms of the Newtonian potential of the source term. In the case of concentric disks, we make the condition even more explicit. Using the condition, we are able to show that for any source supported outside a critical radius CALR does not take place, and for sources located inside the critical radius satisfying certain conditions CALR does take place as the loss parameter goes to zero.