In:
npj 2D Materials and Applications, Springer Science and Business Media LLC, Vol. 1, No. 1 ( 2017-05-22)
Abstract:
Besides having unique electronic properties, graphene is claimed to be the strongest material in nature due to its Young modulus, which is, per atomic layer, much larger than that of steel. This reasoning however does not take into account the peculiar properties of graphene as a thermally fluctuating crystalline membrane, which at finite temperature, lead to a dramatic reduction of the Young modulus for micron-sized graphene samples in comparison with atomic scale values. We show that the standard Föppl-von Karman elasticity theory for thin plates, routinely used for the interpretation of experimental results has to be modified for graphene at room temperature and for micron-sized samples. Based on scaling analysis and atomistic simulation, we investigate the mechanics of graphene under transverse load up to breaking. We determine the limits of applicability of the Föppl-von Karman theory and provide quantitative estimates for the different regimes.
Type of Medium:
Online Resource
ISSN:
2397-7132
DOI:
10.1038/s41699-017-0009-3
Language:
English
Publisher:
Springer Science and Business Media LLC
Publication Date:
2017
detail.hit.zdb_id:
2893016-2
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