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Journal of Materials Science
Erschienen in: Journal of Materials Science 18/2017

12.06.2017 | Computation

Synergistic effects of grain boundaries and edges on fatigue deformations of sub-5 nm graphene nanoribbons

verfasst von: Zhi Yang, Yuhong Huang, Hongwei Bao, Kewei Xu, Fei Ma

Erschienen in: Journal of Materials Science | Ausgabe 18/2017

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Abstract

Polycrystalline graphene nanoribbons usually experience a brittle rupture before failure, and the irreversible breaking occurs in grain boundaries (GBs). In this paper, molecular dynamic simulations are conducted to study the fatigue properties of bi-crystal graphene nanoribbons under a periodic in-plane compression. It is found that ribbon edges rather than GBs dominate the dynamic stability when the ribbon width is smaller than 5 nm. The fatigue failure is closely related to the misorientation angle between two grains because of the distinct edge energy. It always starts from the edges with higher energy and results in a localized damage at the edges.
Vorheriger Artikel Modeling the thermodynamic behavior and shock response of Ti systems at the atomic scales and the mesoscales
Nächster Artikel Deactivation of electrically supersaturated Te-doped InGaAs grown by MOCVD

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Metadaten
Titel
Synergistic effects of grain boundaries and edges on fatigue deformations of sub-5 nm graphene nanoribbons
verfasst von
Zhi Yang
Yuhong Huang
Hongwei Bao
Kewei Xu
Fei Ma
Publikationsdatum
12.06.2017
Verlag
Springer US
Erschienen in
Journal of Materials Science / Ausgabe 18/2017
Print ISSN: 0022-2461
Elektronische ISSN: 1573-4803
DOI
https://doi.org/10.1007/s10853-017-1269-1

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