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Relation between plasmonic tip emission and electromagnetic enhancement evidenced in tip‐enhanced Raman spectroscopy
Author(s) -
Plathier J.,
Merlen A.,
Pignolet A.,
Ruediger A.
Publication year - 2017
Publication title -
journal of raman spectroscopy
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.748
H-Index - 110
eISSN - 1097-4555
pISSN - 0377-0486
DOI - 10.1002/jrs.5260
Subject(s) - raman spectroscopy , plasmon , materials science , carbon nanotube , barium titanate , spectroscopy , substrate (aquarium) , coherent anti stokes raman spectroscopy , luminescence , molecular vibration , optoelectronics , optics , raman scattering , molecular physics , nanotechnology , chemistry , physics , oceanography , quantum mechanics , geology , dielectric
We report tip‐enhanced Raman spectroscopy measurements of single wall carbon nanotubes deposited on a barium titanate substrate. The tip‐enhanced Raman spectroscopy mappings demonstrate that the evolution of the gold tip enhanced luminescence is strongly correlated with the intensity of the Raman modes from the single wall carbon nanotubes and the substrate. As the tip emission is directly related to the plasmonic properties of the nanoantenna at the apex of the tip, it is possible to compare the frequency and intensity of each vibrational mode with the electromagnetic enhancement model. We find a very good agreement between all these parameters confirming the essential role of the electromagnetic enhancement mechanism in surface enhanced spectroscopy.