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Spectral tuning of IR-resonant nanoantennas by nanogap engineering

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 mon...

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Bibliographic Details
Main Authors: Weber, Daniel (Author) , Katzmann, Julia (Author) , Neubrech, Frank (Author) , Härtling, Thomas (Author) , Pucci, Annemarie (Author)
Format: Article (Journal)
Language:English
Published: 17 Oct 2011
In: Optical materials express
Year: 2011, Volume: 1, Issue: 7, Pages: 1301-1306
ISSN:2159-3930
DOI:10.1364/OME.1.001301
Online Access:Verlag, lizenzpflichtig, Volltext: https://doi.org/10.1364/OME.1.001301
Verlag, lizenzpflichtig, Volltext: https://opg.optica.org/ome/abstract.cfm?uri=ome-1-7-1301
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Author Notes:Daniel Weber, Julia Katzmann, Frank Neubrech, Thomas Härtling, and Annemarie Pucci
Description
Summary: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.
Item Description:Gesehen am 09.11.2022
Physical Description:Online Resource
ISSN:2159-3930
DOI:10.1364/OME.1.001301

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