Edge-edge interactions in stacked graphene nanoplatelets

Eduardo Cruz-Silva, Xiaoting Jia, Humberto Terrones, Bobby G. Sumpter, Mauricio Terrones Maldonado, Mildred S. Dresselhaus, Vincent Meunier

Research output: Contribution to journalArticle

22 Citations (Scopus)

Abstract

High-resolution transmission electron microscopy studies show the dynamics of small graphene platelets on larger graphene layers. The platelets move nearly freely to eventually lock in at well-defined positions close to the edges of the larger underlying graphene sheet. While such movement is driven by a shallow potential energy surface described by an interplane interaction, the lock-in position occurs via edge-edge interactions of the platelet and the graphene surface located underneath. Here, we quantitatively study this behavior using van der Waals density functional calculations. Local interactions at the open edges are found to dictate stacking configurations that are different from Bernal (AB) stacking. These stacking configurations are known to be otherwise absent in edge-free two-dimensional graphene. The results explain the experimentally observed platelet dynamics and provide a detailed account of the new electronic properties of these combined systems.

Original languageEnglish (US)
Pages (from-to)2834-2841
Number of pages8
JournalACS Nano
Volume7
Issue number3
DOIs
StatePublished - Mar 26 2013

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Graphene
graphene
Platelets
platelets
interactions
Potential energy surfaces
High resolution transmission electron microscopy
configurations
Electronic properties
Density functional theory
potential energy
transmission electron microscopy
high resolution
electronics

All Science Journal Classification (ASJC) codes

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

Cite this

Cruz-Silva, E., Jia, X., Terrones, H., Sumpter, B. G., Terrones Maldonado, M., Dresselhaus, M. S., & Meunier, V. (2013). Edge-edge interactions in stacked graphene nanoplatelets. ACS Nano, 7(3), 2834-2841. https://doi.org/10.1021/nn4004204
Cruz-Silva, Eduardo ; Jia, Xiaoting ; Terrones, Humberto ; Sumpter, Bobby G. ; Terrones Maldonado, Mauricio ; Dresselhaus, Mildred S. ; Meunier, Vincent. / Edge-edge interactions in stacked graphene nanoplatelets. In: ACS Nano. 2013 ; Vol. 7, No. 3. pp. 2834-2841.
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Cruz-Silva, E, Jia, X, Terrones, H, Sumpter, BG, Terrones Maldonado, M, Dresselhaus, MS & Meunier, V 2013, 'Edge-edge interactions in stacked graphene nanoplatelets', ACS Nano, vol. 7, no. 3, pp. 2834-2841. https://doi.org/10.1021/nn4004204

Edge-edge interactions in stacked graphene nanoplatelets. / Cruz-Silva, Eduardo; Jia, Xiaoting; Terrones, Humberto; Sumpter, Bobby G.; Terrones Maldonado, Mauricio; Dresselhaus, Mildred S.; Meunier, Vincent.

In: ACS Nano, Vol. 7, No. 3, 26.03.2013, p. 2834-2841.

Research output: Contribution to journalArticle

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AU - Cruz-Silva, Eduardo

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AU - Dresselhaus, Mildred S.

AU - Meunier, Vincent

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AB - High-resolution transmission electron microscopy studies show the dynamics of small graphene platelets on larger graphene layers. The platelets move nearly freely to eventually lock in at well-defined positions close to the edges of the larger underlying graphene sheet. While such movement is driven by a shallow potential energy surface described by an interplane interaction, the lock-in position occurs via edge-edge interactions of the platelet and the graphene surface located underneath. Here, we quantitatively study this behavior using van der Waals density functional calculations. Local interactions at the open edges are found to dictate stacking configurations that are different from Bernal (AB) stacking. These stacking configurations are known to be otherwise absent in edge-free two-dimensional graphene. The results explain the experimentally observed platelet dynamics and provide a detailed account of the new electronic properties of these combined systems.

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Cruz-Silva E, Jia X, Terrones H, Sumpter BG, Terrones Maldonado M, Dresselhaus MS et al. Edge-edge interactions in stacked graphene nanoplatelets. ACS Nano. 2013 Mar 26;7(3):2834-2841. https://doi.org/10.1021/nn4004204