Tunable optical antennas based on metallic nanoshells with nanoknobs

Andrey I. Denisyuk, Maria A. Tinskaya, Mikhail I. Petrov, Artem V. Shelaev, Pavel S. Dorozhkin

Research output: Contribution to journalArticlepeer-review

5 Citations (Scopus)

Abstract

We investigate optical properties of a new complex plasmonic nanostructure, which consists of a spherical metallic nanoshell and a small metallic nanoparticle ("nanoknob") situated on its surface. The plasmon resonance wavelength of the entire structure is guided by the geometrical and material properties of the nanoshell whereas the electromagnetic field of the incident light is localized and enhanced near the "nanoknob." The idea is supported with electromagnetic modeling and nearfield optical microscopy imaging. In addition, we proposed and demonstrated a new method of nanoparticle precise manipulation under electron beam, which could be used in fabrication of such plasmonic structures and other nanosized elements.

Original languageEnglish
Pages (from-to)8651-8655
Number of pages5
JournalJournal of Nanoscience and Nanotechnology
Volume12
Issue number11
DOIs
Publication statusPublished - Nov 2012
Externally publishedYes

Keywords

  • Nanoparticle manipulation
  • Optical antenna
  • Plasmon hybridization
  • Plasmonic nanostructure
  • Surface plasmon resonance

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