| This article briefly summarizes the information now available, from recent experiments, computer simulations and theoretical models, addressing the outstanding mechanical properties of graphene. In particular, experimental data on superior strength and extremely high in-plane stiffness of pristine graphene are presented. The role of dislocations as carriers of plastic flow in graphene is discussed. Special attention is devoted to the effects of grain boundaries in polycrystalline graphene on its strength.Also, enhancement of fracture toughness due to graphene inclusions in nanocomposites is considered. Finally, important unsolved problems in interdisciplinary fundamental science and applied research of the mechanical properties exhibited by graphene are outlined. |
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