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Issue 19, 2012
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Slip corona surrounding bilayer graphene nanopore

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Abstract

The electronic and magnetic properties of bilayer graphene (BLG) depend on the stacking order between the two layers. We introduce a new conceptual structure of “slip corona” on BLG, which is a transition region between A–A stacking close to a nanopore composed of bilayer edges (BLEs) and A–B stacking far away. For an extremely small nanopore (diameter Dpore < ∼5 nm), both atomistic simulations and a continuum model reach consistent descriptions on the shape and size of this “corona” (diameter ∼50 nm), which is much larger than the width of the typical dislocation core (∼1 nm) in 3D metals or the nanopore itself, due to the weak van der Waals interactions and low interlayer shear resistance between two adjacent layers of graphene. The continuum model also suggests that the width of this “corona” from the BLE to the A–B stacking area would increase as Dpore increases and converge to ∼40 nm when Dpore is more than ∼80 nm. This large stacking transition region provides a new avenue for tailoring BLG properties.

Graphical abstract: Slip corona surrounding bilayer graphene nanopore

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Publication details

The article was received on 05 Jun 2012, accepted on 11 Jul 2012 and first published on 17 Jul 2012


Article type: Paper
DOI: 10.1039/C2NR31405C
Citation: Nanoscale, 2012,4, 5989-5997

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    Slip corona surrounding bilayer graphene nanopore

    L. Qi, Y. Mao and J. Li, Nanoscale, 2012, 4, 5989
    DOI: 10.1039/C2NR31405C

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