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Title: Plasmonic behavior of gold nanorod heterodimers with free-electron feed

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.
Authors:
; ;  [1]
  1. Surface Physics and Material Science Division, Saha Institute of Nuclear Physics, Kolkata 700064 (India)
Publication Date:
OSTI Identifier:
22490392
Resource Type:
Journal Article
Resource Relation:
Journal Name: AIP Conference Proceedings; Journal Volume: 1665; Journal Issue: 1; Conference: 59. DAE solid state physics symposium 2014, Tamilnadu (India), 16-20 Dec 2014; Other Information: (c) 2015 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; CATHODOLUMINESCENCE; COUPLING; DENSITY; DIMERS; ELECTRIC FIELDS; ELECTRON BEAMS; ELECTRONS; EMISSION SPECTROSCOPY; GOLD; NANOSTRUCTURES; PARTICLES; RESOLUTION; SCANNING ELECTRON MICROSCOPY; SEMICONDUCTOR JUNCTIONS; SURFACES