Raman Radial Mode Revealed from Curved Graphene
- Authors
- Lee, Jae-Kap; Hembram, K. P. S. S.; Park, Yeseul; Lee, Sang-Gil; Kim, Jin-Gyu; Lee, Wooyoung; Moon, Dong Ju
- Issue Date
- 2017-06
- Publisher
- American Chemical Society
- Citation
- The Journal of Physical Chemistry Letters, v.8, no.12, pp.2597 - 2601
- Abstract
- One of the unsolved fundamental issues of graphene is establishing an appropriate way to discern layers of graphene structures. We report a simple methodology to analyze graphene structures using Raman signals in the range of similar to 100 to similar to 500 cm(-1) comprising clear 118 or 175 cm(-1) peaks. We demonstrate that the low-energy signals on Raman spectra of plasma-seeded grown graphene sheets originated from nanocurvature (c) of mono- (175 and 325-500 cm(-1) signals) (c approximate to 1 nm) and bilayer (118 cm(-1) peak) (c approximate to 2 nm) graphene with Raman simulations, based on Raman radial mode (RM) Eigen vectors. Our RM model provides a standard way of identifying and evaluating graphene structures.
- Keywords
- WALLED CARBON NANOTUBES; BILAYER; SCATTERING; SPECTROSCOPY; LAYERS; Graphene; Monolayer; Bilayer; Curvature; Raman; Radial mode; Analysis
- ISSN
- 1948-7185
- URI
- https://pubs.kist.re.kr/handle/201004/122694
- DOI
- 10.1021/acs.jpclett.7b01220
- Appears in Collections:
- KIST Article > 2017
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