Raman study on the g mode of graphene for determination of edge orientation.

@article{Cong2010RamanSO,
  title={Raman study on the g mode of graphene for determination of edge orientation.},
  author={Chunxiao Cong and Ting Yu and Haomin Wang},
  journal={ACS nano},
  year={2010},
  volume={4 6},
  pages={
          3175-80
        }
}
We report a confocal Raman study on edges of single-layer graphene. It is found that edge orientations could be identified by G mode in addition to D mode. We observe that G mode at the edges of single-layer graphene exhibits polar behaviors and different edges such as zigzag- or armchair-dominated responses differently than the polarization of the incident laser. Moreover, G mode shows stiffening at zigzag-dominated edges, while it is softened at armchair-dominated ones. Our observations are… Expand

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