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Abstract: Theory predicts a distinct spectral shift between the near- and far-field optical response of plasmonic antennas. Here we combine near-field optical microscopy and far-field spectroscopy of individual infrared-resonant nanoantennas to verify experimentally this spectral shift. Numerical calculations corroborate our experimental results. We furthermore discuss the implications of this effect in surface-enhanced infrared spectroscopy.
Fuente: Physical review letters, 2013, 110, 203902
Publisher: American Physical Society
Year of publication: 2013
No. of pages: 6
Publication type: Article
DOI: 10.1103/physrevlett.110.203902
ISSN: 0031-9007,1079-7114
Publication Url: https://doi.org/10.1103/PhysRevLett.110.203902
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ALONSO-GONZÁLEZ, P.
PABLO ALBELLA ECHAVE
NEUBRECH, F.
HUCK, C.
CHEN, J.
GOLMAR, F.
CASANOVA, F.
HUESO, L. E.
PUCCI, A.
AIZPURUA, J.
HILLENBRAND, R.
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