| Graphene with a high-density ensemble of homogeneously dispersed topological disclinations is defined and theoretically described as a new two-dimensional material hereinafter called highly disclinated graphene (HDG). Within the suggested approach, positive and negative disclinations - pentagon and heptagon rings - in hexagonal lattice of graphene create the nanoscopically buckled structure containing local "hills" and "valleys". It is theoretically shown that the buckled structure is responsible for non-linear superelasticity of graphene-HDG nanocomposites and may cause other, potentially excellent mechanical characteristics of such nanocomposites and HDG. |
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