Fano coil-type resonance for magnetic hot-spot generation

A. Nazir, S. Panaro, R. Proietti Zaccaria, Carlo Liberale, F. De Angelis, A. Toma*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

80 Scopus citations

Abstract

The possibility to develop nanosystems with appreciable magnetic response at optical frequencies has been a matter of intense study in the past few years. This aim was strongly hindered by the saturation of the magnetic response of "natural" materials beyond the THz regime. Recently, in order to overcome such limitation, it has been considered to enhance the magnetic fields through the induction of displacement currents triggered by plasmonic resonances. Here we investigate a nanoassembly supporting the hybridization of an electric and magnetic plasmonic mode in Fano resonance conditions. Taking advantage of the enhancement properties owned by such interferential resonance, we have been able to generate an intense and localized magnetic hot-spot in the near-infrared spectral region.

Original languageEnglish (US)
Pages (from-to)3166-3171
Number of pages6
JournalNano Letters
Volume14
Issue number6
DOIs
StatePublished - Jun 11 2014

Keywords

  • Fano resonance
  • Localized surface plasmon
  • dark mode
  • electron beam lithography
  • magnetic hot-spot

ASJC Scopus subject areas

  • Bioengineering
  • Chemistry(all)
  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanical Engineering

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