Plasmonic behavior of gold nanorod heterodimers with free-electron feed

Arpan Maiti, Achyut Maity, Tapas Kumar Chini

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

1 Scopus citations


The plasmon coupling between metal nanostructures can lead to huge local electric field enhancement and new plasmon modes. Here, we study the effect of the close proximity of two gold nanorod particles on the modification of localized surface plasmon (LSP) modes of the individual on gold nanorod in spectral and spatial domain using cathodoluminescence (CL) spectroscopy and imaging in a high resolution scanning electron microscope (SEM). Significantly enhanced resonant emission is observed from the nanorod dimers when the electron beam is injected around the junction between the rods, where the local density of electromagnetic states is raised.

Original languageEnglish
Title of host publicationSolid State Physics
Subtitle of host publicationProceedings of the 59th DAE Solid State Physics Symposium 2014
EditorsR. Chitra, N. K. Sahoo, Dibyendu Bhattacharyya
PublisherAmerican Institute of Physics Inc.
ISBN (Electronic)9780735413108
StatePublished - 24 Jun 2015
Externally publishedYes
Event59th DAE Solid State Physics Symposium, SSPS 2014 - Vellore, Tamilnadu, India
Duration: 16 Dec 201420 Dec 2014

Publication series

NameAIP Conference Proceedings
ISSN (Print)0094-243X
ISSN (Electronic)1551-7616


Conference59th DAE Solid State Physics Symposium, SSPS 2014
CityVellore, Tamilnadu


  • Cathodoluminescence
  • Localized surface plasmon resonances
  • Plasmonics

ASJC Scopus subject areas

  • General Physics and Astronomy


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