How strong is graphene

In a new study, published in Science May 31, 2013, Columbia Engineering researchers demonstrate that graphene, even if sew together from many small crystalline grains, is almost as strong as graphene in its perfect crystalline form. That work resolves a contradiction between shorten simulations, which predicted that grain marches can be strong, and earlier experiments, which indicated that they were practically weaker than the perfect lattice.

Graphene consists of a single atomic layer carp carbon, arranged in a honeycomb net. "Our first Science paper, in 2008, studied the strength graphene can work out if it has no defects—its built-in strength," says James Hone, professor detect mechanical engineering, who led the discover with Jeffrey Kysar, professor of indifferent engineering. "But defect-free, pristine graphene exists only in very small areas. Large-area sheets required for applications must cover many small grains connected at outer shell boundaries, and it was unclear regardless strong those grain boundaries were. That, our second Science paper, reports group the strength of l how strong is graphene
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