Shielding at a distance due to anomalous resonance

Sanghyeon Yu, Mikyoung Lim

Research output: Contribution to journalArticlepeer-review

4 Citations (Scopus)

Abstract

A cylindrical plasmonic structure with a concentric core exhibits an anomalous localized resonance which results in cloaking effects. Here we show that if the structure has an eccentric core, a new kind of shielding effect can happen. In contrast to conventional shielding devices, our proposed structure can block the effect of external electrical sources, even in a region which is not enclosed by any conducting materials. In fact, the shielded region is located at a distance from the device. We analytically investigate this phenomenon by using the Möbius transformation, through which an eccentric annulus is transformed into a concentric one. We also present several numerical examples.

Original languageEnglish
Article number033018
JournalNew Journal of Physics
Volume19
Issue number3
DOIs
Publication statusPublished - 2017 Mar
Externally publishedYes

Keywords

  • anomalous localized resonance
  • cloaking
  • plasmonic superlens
  • shielding at a distance

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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