Graphene edges and beyond: Temperature-driven structures and electromagnetic properties

Changbae Hyun, Jeonghun Yun, Woo Jong Cho, Chang Woo Myung, Jaesung Park, Geunsik Lee, Zonghoon Lee, Kwanpyo Kim, Kwang S. Kim

Research output: Contribution to journalReview article

17 Citations (Scopus)

Abstract

The atomic configuration of graphene edges significantly influences the various properties of graphene nanostructures, and realistic device fabrication requires precise engineering of graphene edges. However, the imaging and analysis of the intrinsic nature of graphene edges can be illusive due to contamination problems and measurement-induced structural changes to graphene edges. In this issue of ACS Nano, He et al. report an in situ heating experiment in aberration-corrected transmission electron microscopy to elucidate the temperature dependence of graphene edge termination at the atomic scale. They revealed that graphene edges predominantly have zigzag terminations below 400 °C, while above 600 °C, the edges are dominated by armchair and reconstructed zigzag edges. This report brings us one step closer to the true nature of graphene edges. In this Perspective, we outline the present understanding, issues, and future challenges faced in the field of graphene-edge-based nanodevices.

Original languageEnglish
Pages (from-to)4669-4674
Number of pages6
JournalACS Nano
Volume9
Issue number5
DOIs
Publication statusPublished - 2015 May 26

All Science Journal Classification (ASJC) codes

  • Materials Science(all)
  • Engineering(all)
  • Physics and Astronomy(all)

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    Hyun, C., Yun, J., Cho, W. J., Myung, C. W., Park, J., Lee, G., Lee, Z., Kim, K., & Kim, K. S. (2015). Graphene edges and beyond: Temperature-driven structures and electromagnetic properties. ACS Nano, 9(5), 4669-4674. https://doi.org/10.1021/acsnano.5b02617