Special Section on Fundamental and Applied Nanoelectromagnetics

Forming electronic waveguides from graphene grain boundaries

[+] Author Affiliations
Géza I. Márk

Institute of Technical Physics and Materials Science, Research Centre for Natural Sciences, 1525 Budapest, P.O. Box 49, Hungary

Korean-Hungarian Joint Laboratory for Nanosciences, H-1525 Budapest, P.O. Box 49, Hungary

Péter Vancsó

Institute of Technical Physics and Materials Science, Research Centre for Natural Sciences, 1525 Budapest, P.O. Box 49, Hungary

Korean-Hungarian Joint Laboratory for Nanosciences, H-1525 Budapest, P.O. Box 49, Hungary

Philippe Lambin

Facultés Universitaires Notre Dame de la Paix, Department of Physics of Matter and Radiations, 61, Rue de Bruxelles, B-5000 Namur, Belgium

Chanyong Hwang

Korea Research Institute of Standards and Science, Center for Nano-imaging Technology, Division of Industrial Metrology, Yuseong, Daejeon 305-340, Republic of Korea

Korean-Hungarian Joint Laboratory for Nanosciences, H-1525 Budapest, P.O. Box 49, Hungary

László Péter Biró

Institute of Technical Physics and Materials Science, Research Centre for Natural Sciences, 1525 Budapest, P.O. Box 49, Hungary

Korean-Hungarian Joint Laboratory for Nanosciences, H-1525 Budapest, P.O. Box 49, Hungary

J. Nanophoton. 6(1), 061718 (Dec 05, 2012). doi:10.1117/1.JNP.6.061718
History: Received July 12, 2012; Revised October 30, 2012; Accepted November 2, 2012
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Abstract.  If graphene is a promising material in many respects, its remarkable properties may be impaired by unavoidable defects. Chemical vapor deposition-grown graphene samples are polycrystalline in nature, with many grain boundaries. Those extended defects influence the global electronic structure and the transport properties of graphene in a way that remains to be clarified. As a step forward in this direction, we have undertaken quantum mechanical calculations of electron wave-packet dynamics in a multigrain self-supported graphene layer. Our computer simulations show that a grain boundary may act as a reflector at some energies and for some incidences of the Bloch waves. In addition, our calculations reveal that when two grain boundaries run parallel to each other, the graphene ribbon confined between them may behave like a channel for the charge carriers. We emphasize therefore the possibility of creating nanoscale electronic waveguides and nanowires on the graphene surface by a controlled engineering of its grain boundaries.

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© 2012 Society of Photo-Optical Instrumentation Engineers

Citation

Géza I. Márk ; Péter Vancsó ; Philippe Lambin ; Chanyong Hwang and László Péter Biró
"Forming electronic waveguides from graphene grain boundaries", J. Nanophoton. 6(1), 061718 (Dec 05, 2012). ; http://dx.doi.org/10.1117/1.JNP.6.061718


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