journal article·2013-03-26

Edge–Edge Interactions in Stacked Graphene Nanoplatelets

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

ACS Nano· Volume 7· Issue 3
Publisher page

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.
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Research context

OpenAlex topics: Graphene research and applications · Quantum and electron transport phenomena · Nanopore and Nanochannel Transport Studies

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

Affiliations

Department of Polymer Science and Engineering, University of Massachusetts, Amherst, Massachusetts 01003, United States

Department of Physics, Applied Physics, and Astronomy, Rensselaer Polytechnic Institute, Troy, New York 12180, United States

Research Laboratory of Electronics, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, United States

Department of Physics, 104 Davey Lab, The Pennsylvania State University, State College, Pennsylvania 16802, United States

Center for Nanophase Materials Science, and Computer Science and Mathematics Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, United States

Department of Materials Science and Engineering & Center for 2-Dimensional and Layered Materials, The Pennsylvania State University, University Park, Pennsylvania 16802-6300, United States

Research Center for Exotic Nanocarbons (JST), Shinshu University, Wakasato 4-17-1, Nagano 380-8553, Japan

Department of Physics and Department of Electrical Engineering and Computer Science, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, United States

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