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

Charilaos Paraskevaidis, Tevye Kuykendall, Mauro Melli, Alexander Weber-Bargioni, P. James Schuck, Adam Schwartzberg, Scott Dhuey, Stefano Cabrini, Haim Grebel

Research output: Contribution to journalArticlepeer-review

3 Scopus citations

Abstract

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.

Original languageEnglish (US)
Pages (from-to)15321-15331
Number of pages11
JournalNanoscale
Volume7
Issue number37
DOIs
StatePublished - Oct 7 2015

All Science Journal Classification (ASJC) codes

  • Materials Science(all)

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