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3 October 2022 Characterization of monolayer graphene wrinkles via tip-enhanced Raman spectroscopy
Maria Vanessa Oguchi, Norihiko Hayazawa, Takuo Tanaka
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Proceedings Volume PC12197, Plasmonics: Design, Materials, Fabrication, Characterization, and Applications XX; PC121970X (2022) https://doi.org/10.1117/12.2633229
Event: SPIE Nanoscience + Engineering, 2022, San Diego, California, United States
Abstract
In this work, we studied the Raman spectra characteristics, strain distribution and carrier concentration of monolayer graphene wrinkles on a Au(111) crystal facet using tip-enhanced Raman spectroscopy (TERS) in ambient. G-band splitting was observed in certain areas of the wrinkle indicating the presence of anisotropic strain. A broad background was also observed in the near-field spectra that is hypothesized to be electronic Raman scattering originating from the graphene monolayer and the Au(111) substrate. Hence, careful spectral analysis must be done since this broad background potentially contains information on the sample.
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Maria Vanessa Oguchi, Norihiko Hayazawa, and Takuo Tanaka "Characterization of monolayer graphene wrinkles via tip-enhanced Raman spectroscopy", Proc. SPIE PC12197, Plasmonics: Design, Materials, Fabrication, Characterization, and Applications XX, PC121970X (3 October 2022); https://doi.org/10.1117/12.2633229
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KEYWORDS
Graphene
Raman spectroscopy
Chemical vapor deposition
Gold
Etching
Raman scattering
Spatial resolution
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