Gain and Raman line-broadening with graphene coated diamond-shape nano-antennas

Using Surface Enhanced Raman Scattering (SERS), we report on intensity-dependent broadening in graphene-deposited broad-band antennas. The antenna gain curve includes both the incident frequency and some of the scattered mode frequencies. By comparing antennas with various gaps and types (bow-tie vs...

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Bibliographic Details
Published in:Nanoscale 2015-10, Vol.7 (37), p.15321-15331
Main Authors: Paraskevaidis, Charilaos, Kuykendall, Tevye, Melli, Mauro, Weber-Bargioni, Alexander, Schuck, P James, Schwartzberg, Adam, Dhuey, Scott, Cabrini, Stefano, Grebel, Haim
Format: Article
Language:English
Subjects:
Antenna gain
Antennas
Diamonds
Graphene
Line broadening
Nanostructure
Raman scattering
Strain
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Summary:Using Surface Enhanced Raman Scattering (SERS), we report on intensity-dependent broadening in graphene-deposited broad-band antennas. The antenna gain curve includes both the incident frequency and some of the scattered mode frequencies. By comparing antennas with various gaps and types (bow-tie vs. diamond-shape antennas) we make the case that the line broadening did not originate from strain, thermal or surface potential. Strain, if present, further shifts and broadens those Raman lines that are included within the antenna gain curve.
ISSN:2040-3364
2040-3372
DOI:10.1039/c5nr03893f