Journal
APPLIED PHYSICS LETTERS
Volume 100, Issue 25, Pages -Publisher
AMER INST PHYSICS
DOI: 10.1063/1.4729940
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- Australian Government
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The elastic properties of edges are among the most fundamental properties of finite two-dimensional (2D) crystals. Using a combination of the first-principles density functional theory calculations and a continuum elasticity model, we present an efficient technique to determine the edge stresses of non-stoichiometric orientations in multicomponent 2D crystals. Using BN and MoS2 as prototypical examples of 2D binary monolayers with threefold in-plane symmetry, we unambiguously compute unique edge stresses of commonly observed non-stoichiometric edges. Our results show that the edge stresses for these structurally distinct orientations can differ significantly from the average values that have been typically reported to date. (C) 2012 American Institute of Physics.[http://dx.doi.org/10.1063/1.4729940]
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