Abstract—Molecular dynamics is used to study the fracture of pseudo-graphenes, namely, allotropic forms of carbon that are modifications of graphene with a high density of periodically distributed disclinations with zero total charge. Disclinations in pseudo-graphenes are associated with improper carbon rings, that is, rings having 4, 5, 7, or 8 members, in contrast to the proper 6-member carbon rings constituting the ideal crystal lattice of graphene. Pseudo-graphenes, which have a significant excess of energy relative to graphene, show a significant (up to 50%) decrease in the critical tensile stress compared to defect-free graphene.
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This study was supported by the Russian Foundation for Basic Research (RFBR) (project no. 18-01-00884 A).
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Translated by A.A. Borimova
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Kolesnikova, A.L., Rozhkov, M.A. & Romanov, A.E. On Fracture of Pseudo-Graphenes. Mech. Solids 55, 69–76 (2020). https://doi.org/10.3103/S0025654420010124
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DOI: https://doi.org/10.3103/S0025654420010124