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(Referência obtida automaticamente do Web of Science, por meio da informação sobre o financiamento pela FAPESP e o número do processo correspondente, incluída na publicação pelos autores.)

Torsional ``superplasticity{''} of graphyne nanotubes

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Autor(es):
de Sousa, J. M. [1] ; Brunetto, G. [1] ; Coluci, V. R. [2] ; Galvao, D. S. [1]
Número total de Autores: 4
Afiliação do(s) autor(es):
[1] Univ Estadual Campinas, Dept Appl Phys, BR-13083970 Campinas, SP - Brazil
[2] State Univ Campinas UNICAMP, Sch Technol, BR-13484332 Limeira, SP - Brazil
Número total de Afiliações: 2
Tipo de documento: Artigo Científico
Fonte: Carbon; v. 96, p. 14-19, JAN 2016.
Citações Web of Science: 13
Resumo

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. (AU)

Processo FAPESP: 13/08293-7 - CECC - Centro de Engenharia e Ciências Computacionais
Beneficiário:Munir Salomao Skaf
Linha de fomento: Auxílio à Pesquisa - Centros de Pesquisa, Inovação e Difusão - CEPIDs