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HomeAdvanced Materials ResearchAdvanced Materials Research Vol. 873Influence of Atomic Defect on the Deformation...

Influence of Atomic Defect on the Deformation Properties of Nanowires Subjected to Uniaxial Tension

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Abstract:

Atomic defects play an important role in the brittle deformation of nanowires at low temperatures. With molecular dynamics simulations, we study the influence of vacancy defects on the deformation and breaking behaviors of [10 oriented single-crystal gold nanowires at 50 and 150 K. The size of the nanowire is 10a × 10a × 30a (a stands for lattice constant, 0.408 nm for gold). It is shown that good crystalline structure appears in the whole deformation process, and it is in a brittle way at low temperature. The nanowire breaking behavior is sensitive to atomic vacancies when the atomic vacancy ratio is 1% in single-layer crystalline plane. Within the limitation of vacancy-induced breaking of the nanowire, the mechanical strengths increase under atomic vacancies. However, it decreases with the defect ratio increasing.

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The Eighth China National Conference on Functional Materials and Applications

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Periodical:

Advanced Materials Research (Volume 873)

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139-146

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https://doi.org/10.4028/www.scientific.net/AMR.873.139

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Online since:

December 2013

Authors:

Fen Ying Wang*, Wei Sun, Yan Feng Dai, Yi Wang Chen, Jian Wei Zhao, Xiao Lin

Keywords:

Gold Nanowires, Molecular Dynamics (MD) Simulation, Most Probable Breaking Position, Vacancy Defects

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© 2014 Trans Tech Publications Ltd. All Rights Reserved

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