KIP publications

year 2011
author(s) Daniel Weber, Julia Katzmann, Frank Neubrech, Thomas Härtling, and Annemarie Pucci
title Spectral tuning of IR-resonant nanoantennas by nanogap engineering
KIP-Nummer HD-KIP 11-70
KIP-Gruppe(n) F6
document type Paper
Keywords Nanoantenna, infrared spectroscopy, plasmonics, photo-chemical metal deposition
source Optical Materials Express 1 (2011) 1301
doi 10.1364/OME.1.001301
Abstract (en)

We report on tuning the plasmonic properties of gold nanoantenna arrays resonant in the infrared (IR) spectral region. In particular, we achieve a manipulation of the antenna resonance by decreasing the antenna separation distance via photochemical metal deposition. Narrowing the antenna gaps is monitored using scanning electron microscopy, while increased plasmonic coupling and an associated red-shift of the plasmon resonance is observed by microscopic IR spectroscopy. Since smaller gap sizes lead to enhanced electric fields between the antenna arms, we propose photochemical metal deposition as a fabrication step for surface-enhanced IR spectroscopy (SEIRS) substrates.

  author   = {Daniel Weber and Julia Katzmann and Frank Neubrech and Thomas H\"{a}rtling and Annemarie Pucci},
  title    = {Spectral tuning of IR-resonant nanoantennas by nanogap engineering},
  journal  = {Optical Materials Express},
  year     = {2011},
  volume   = {1},
  number   = {7},
  pages    = {1301-1306},
  month    = {Nov},
  doi      = {10.1364/OME.1.001301},
  url      = {}
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