Cited by 743Plasmonic and Surface Plasmon ResearchGold and Silver Nanoparticles Synthesis and ApplicationsNear-Field Optical Microscopy

Resonant Plasmonic and Vibrational Coupling in a Tailored Nanoantenna for Infrared Detection

Neubrech, Frank, Pucci, Annemarie, Cornelius, Thomas Walter, Karim, Shafqat, García-Etxarri, Aitzol, Aizpurua, Javier·2008·Physical Review Letters

Abstract

A novel resonant mechanism involving the interference of a broadband plasmon with the narrowband vibration from molecules is presented. With the use of this concept, we demonstrate experimentally the enormous enhancement of the vibrational signals from less than one attomol of molecules on individual gold nanowires, tailored to act as plasmonic nanoantennas in the infrared. By detuning the resonance via a change in the antenna length, a Fano-type behavior of the spectral signal is observed, which is clearly supported by full electrodynamical calculations. This resonant mechanism can be a new paradigm for sensitive infrared identification of molecular groups.

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Crossref · 10.1103/physrevlett.101.157403

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Authors
Neubrech, F., Pucci, A., Cornelius, T. W., Karim, S., García-Etxarri, A., & Aizpurua, J.
Affiliations
  • Heidelberg University (DE)
  • GSI Helmholtz Centre for Heavy Ion Research (DE)
  • Consejo Superior de Investigaciones Científicas (ES)
Venue
Physical Review Letters
Published
2008-10-07
Volume
101
Issue
15
Pages
157403-157403
ISSN
  • 0031-9007 (ISSN-L)
  • 1079-7114
OpenAlex
W2052174531
Cited by
743
References
32
Citations by year
2026: 27 · 2025: 27 · 2024: 28 · 2023: 19 · 2022: 33 · 2021: 46 · 2020: 48 · 2019: 53 · 2018: 68 · 2017: 56 · 2016: 67 · 2015: 61 · 2014: 54 · 2013: 54 · 2012: 39
FWCI
13.70
Type
journal article
Language
en
Open access
closed
Locations
  • Physical Review Letters (publishedVersion)
  • PubMed (publishedVersion)
  • DIGITAL.CSIC (Spanish National Research Council (CSIC)) (submittedVersion)
Topics
  • Physical Sciences › Engineering › Biomedical Engineering › Plasmonic and Surface Plasmon Research
  • Physical Sciences › Materials Science › Electronic, Optical and Magnetic Materials › Gold and Silver Nanoparticles Synthesis and Applications
  • Physical Sciences › Engineering › Biomedical Engineering › Near-Field Optical Microscopy
Keywords
plasmonic nanoantennas, gold nanowires, infrared detection, Fano resonance, resonance detuning, electrodynamics
MeSH terms
Spectrophotometry, Infrared, Nanostructures

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