Hybridization of singular plasmons via transformation optics

Sanghyeon Yu, Habib Ammari

Research output: Contribution to journalArticlepeer-review

7 Citations (Scopus)

Abstract

Surface plasmon resonances of metallic nanostructures offer great opportunities to guide and manipulate light on the nanoscale. In the design of novel plasmonic devices, a central topic is to clarify the intricate relationship between the resonance spectrum and the geometry of the nanostructure. Despite many advances, the design becomes quite challenging when the desired spectrum is highly complex. Here we develop a theoretical model for surface plasmons of interacting nanoparticles to reduce the complexity of the design process significantly. Our model is developed by combining plasmon hybridization theory with transformation optics, which yields an efficient way of simultaneously controlling both global and local features of the resonance spectrum. As an application, we propose a design of metasurface whose absorption spectrum can be controlled over a large class of complex patterns through only a few geometric parameters in an intuitive way. Our approach provides fundamental tools for the effective design of plasmonic metamaterials with on-demand functionality.

Original languageEnglish
Pages (from-to)13785-13790
Number of pages6
JournalProceedings of the National Academy of Sciences of the United States of America
Volume116
Issue number28
DOIs
Publication statusPublished - 2019
Externally publishedYes

Keywords

  • Plasmon hybridization model
  • Surface plasmons
  • Transformation optics

ASJC Scopus subject areas

  • General

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