Please use this identifier to cite or link to this item: http://repositorio.unicamp.br/jspui/handle/REPOSIP/344971
Type: Artigo
Title: Mechanical properties of graphene nanowiggles
Author: Bizao, R. A.
Botari, T.
Galvao, D. S.
Abstract: In this work we have investigated the mechanical properties and fracture patterns of some graphene nanowiggles (GNWs). Graphene nanoribbons are finite graphene segments with a large aspect ratio, while GNWs are nonaligned periodic repetitions of graphene nanoribbons. We have carried out fully atomistic molecular dynamics simulations using a reactive force field (ReaxFF), as implemented in the LAMPPS (Large-scale Atomic/Molecular Massively Parallel Simulator) code. Our results showed that the GNW fracture patterns are strongly dependent on the nanoribbon topology and present an interesting behavior, since some narrow sheets have larger ultimate failure strain values. This can be explained by the fact that narrow nanoribbons have more angular freedom when compared to wider ones, which can create a more efficient way to accumulate and to dissipate strain/stress. We have also observed the formation of linear atomic chains (LACs) and some structural defect reconstructions during the material rupture. The reported graphene failure patterns, where zigzag/armchair edge terminated graphene structures are fractured along armchair/zigzag lines, were not observed in the GNW analyzed cases.
Subject: Grafeno
Propriedades eletrônicas
Nanofitas
Graphene
Electronic properties
Nanoribbons
Country: Estados Unidos
Editor: Materials Research Society
Rights: fechado
Identifier DOI: 10.1557/opl.2014.402
Address: https://www.cambridge.org/core/journals/mrs-online-proceedings-library-archive/article/mechanical-properties-of-graphene-nanowiggles/9C14A09EA7C41F29D6047440434FCA26
Date Issue: 2014
Appears in Collections:IFGW - Artigos e Outros Documentos

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