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

doi:10.1021/acsnano.5b02617

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

Department of Physics

Research output: Contribution to journal › Review article › peer-review

21 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 language	English
Pages (from-to)	4669-4674
Number of pages	6
Journal	ACS Nano
Volume	9
Issue number	5
DOIs	https://doi.org/10.1021/acsnano.5b02617
Publication status	Published - 2015 May 26

Bibliographical note

Publisher Copyright:
© 2015 American Chemical Society.

All Science Journal Classification (ASJC) codes

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

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10.1021/acsnano.5b02617

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title = "Graphene edges and beyond: Temperature-driven structures and electromagnetic properties",

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.",

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AU - Hyun, Changbae

AU - Yun, Jeonghun

AU - Cho, Woo Jong

AU - Myung, Chang Woo

AU - Park, Jaesung

AU - Lee, Geunsik

AU - Lee, Zonghoon

AU - Kim, Kwanpyo

AU - Kim, Kwang S.

PY - 2015/5/26

Y1 - 2015/5/26

N2 - 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.

AB - 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.

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

Abstract

Bibliographical note

All Science Journal Classification (ASJC) codes

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