Please use this identifier to cite or link to this item: http://repositorio.unicamp.br/jspui/handle/REPOSIP/241615
Type: Artigo
Title: Torsional "superplasticity" of graphyne nanotubes
Author: Sousa, J. M. de
Brunetto, G.
Coluci, V. R.
Galvão, D. S.
Abstract: Graphyne is a planar two-dimensional carbon allotrope formed by atoms in sp, sp(2), and sp(3) hybridized states. Topologically graphyne nanotubes (GNTs) can be considered as cylindrically rolled up graphyne sheets, similarly as carbon nanotubes (CNTs) can be considered rolled up graphene sheets. Due to the presence of single, double, and triple bonds, GNTs exhibit porous sidewalls that can be exploited in many diverse applications. In this work, we investigated the mechanical behavior of GNTs under torsional strains through reactive molecular dynamics simulations. Our results show that GNTs are more flexible than CNTs and exhibit "superplasticit", with fracture angles that are up to 35 times higher than the ones reported to CNTs. This GNT "superplastic" behavior can be explained in terms of irreversible reconstruction processes (mainly associated with the triple bonds) that occur during torsional strains. (C) 2015 Elsevier Ltd. All rights reserved.
Graphyne is a planar two-dimensional carbon allotrope formed by atoms in sp, sp(2), and sp(3) hybridized states. Topologically graphyne nanotubes (GNTs) can be considered as cylindrically rolled up graphyne sheets, similarly as carbon nanotubes (CNTs) can be considered rolled up graphene sheets. Due to the presence of single, double, and triple bonds, GNTs exhibit porous sidewalls that can be exploited in many diverse applications. In this work, we investigated the mechanical behavior of GNTs under torsional strains through reactive molecular dynamics simulations. Our results show that GNTs are more flexible than CNTs and exhibit "superplasticit", with fracture angles that are up to 35 times higher than the ones reported to CNTs. This GNT "superplastic" behavior can be explained in terms of irreversible reconstruction processes (mainly associated with the triple bonds) that occur during torsional strains.
Subject: Carbono, Grafeno, Nanotubos
Country: Reino Unido
Editor: Pergamon Press
Citation: Torsional "superplasticity" Of Graphyne Nanotubes. Pergamon-elsevier Science Ltd, v. 96, p. 14-19 JAN-2016.
Rights: fechado
Identifier DOI: 10.1016/j.carbon.2015.09.039
Address: https://www.sciencedirect.com/science/article/pii/S000862231530258X
Date Issue: 2016
Appears in Collections:IFGW - Artigos e Outros Documentos
FT - Artigos e Outros Documentos

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