LEYSSALE, Jean-Marc; VIGNOLES, Gérard L.; VILLESUZANNE, Antoine

doi:10.1063/1.3698202

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LEYSSALE, Jean-Marc
Laboratoire des Composites Thermostructuraux [LCTS]

VIGNOLES, Gérard L.
Laboratoire des Composites Thermostructuraux [LCTS]

VILLESUZANNE, Antoine
Institut de Chimie de la Matière Condensée de Bordeaux [ICMCB]

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Journal of Chemical Physics. 2012, vol. 136, n° 12, p. 124705

American Institute of Physics

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We report on various nanocarbons formed from a unique structural pattern containing two pentagons, three hexagons and two heptagons, resulting from local rearrange- ments around a divacancy in pristine graphene or nanotubes. This defect can be inserted in sheets or tubes either individually or as extended defect lines. Sheets or tubes containing only this defect as a pattern can also be obtained. These fully defective sheets, and most of the tubes, present a very pronounced rippled (wavy) structure and their energies are lower than other structures based on pentagons and heptagons published so far. Another particularity of these rippled carbon sheets is their ability to fold themselves into a two-dimensional porous network of inter- connected tubes upon heat treatment as shown by hybrid Monte Carlo simulations. Finally, contrary to the common belief that pentagon/heptagon based structures are metallic, this work shows that this defect pattern should give rise to semi-metallic conduction.< Réduire

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Nanotubes

Graphene

Chemical structure

Carbon

nanoparticles

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Rippled nanocarbons from periodic arrangements of reordered bivacancies in graphene or SWCNTs

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