On anomalous localized resonance and plasmonic cloaking beyond the quasi-static limit

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalpeer-review

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Original languageEnglish
Article number20180165
Journal / PublicationProceedings of the Royal Society A: Mathematical, Physical and Engineering Sciences
Issue number2218
Online published31 Oct 2018
Publication statusPublished - Oct 2018
Externally publishedYes


In this paper, we give the mathematical construction of novel core-shell plasmonic structures that can induce anomalous localized resonance and invisibility cloaking at certain finite frequencies beyond the quasistatic limit. The crucial ingredient in our study is that the plasmon constant and the loss parameter are constructed in a delicate way that are correlated and depend on the source and the size of the plasmonic structure. As a significant by-product of this study, we also derive the complete spectrum of the Neumann–Poincáre operator associated with the Helmholtz equation with finite frequencies in the radial geometry. The spectral result is the first one in its type and is of significant mathematical interest for its own sake.

Research Area(s)

  • Anomalous localized resonance, Beyond quasi-static limit, Core-shell structure, Neumann–Poincáre operator, Plasmonic material, Spectral