Efectos de forma y tamaño del poro sobre las propiedades mecánicas de las membranas del grafeno nanoporoso

Cristopher J. Cabanillas-Casas, Gustavo Cuba-Supanta, Justo Rojas-Tapia, Chachi Rojas-Ayala

Resultado de la investigación: Contribución a una revistaArtículorevisión exhaustiva

Resumen

In this work, effects of shape and size of the pores on the mechanical properties of nanoporous graphene (NPG) membranes are studied. Molecular dynamics simulations were performed to study the mechanical and structural responses under uniaxial traction. The results of the stress-strain curves of NPG membranes show an elastic linear behavior for small strain (<0.03) independent of the chiral direction. The chiral anisotropy (armchair and zigzag direction) is notable as deformation increases to the point of fracture. The NPG membranes with hexagonal and rectangular pores present a higher fracture stress (65 GPa and 81 GPa, respectively). Furthermore, Young’s elastic modulus decreases as pore size increases (porosity). This study is expected to provide practical application as high performance membrane filters.

Título traducido de la contribuciónShape and size effects of the pore on the mechanical properties of nanoporous graphene membranes
Idioma originalEspañol
Páginas (desde-hasta)63-78
Número de páginas16
PublicaciónMomento
Volumen2021
N.º62
DOI
EstadoPublicada - 2021

Nota bibliográfica

Publisher Copyright:
© 2021, Universidad Nacional de Colombia. All rights reserved.

Copyright:
Copyright 2021 Elsevier B.V., All rights reserved.

Palabras clave

  • Fracture
  • Graphene with nanoporous
  • Molecular dynamics
  • Stress-Strain curves
  • Young’s modulus

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