Fracture properties of defective carbon nanorings

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalpeer-review

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Original languageEnglish
Pages (from-to)1-7
Journal / PublicationJournal of Computational and Theoretical Nanoscience
Issue number1
Publication statusPublished - Jan 2011


Carbon nanorings are formed by bending single-walled carbon nanotubes and connecting the two ends together. Molecular dynamics simulations are performed to investigate the fracture properties of nanorings with various configurations of atom vacancies. Rings with vacancies intensively located in one center, two centers and other places or almost uniformly distributed in the upper-half circle, are considered. Two different temperatures, 298 K and 1500 K, are employed to examine the fracture mechanism. The results of the simulations show that the vacancies in the nanorings are much more insensitive to their fracture than in the straight nanotubes. Due to the buckling effect and stress concentrations, the defective carbon nanorings of our models are all brittle at stretched sides, even when the local vacancy concentration is extremely high. Copyright © 2011 American Scientific Publishers All rights reserved.

Research Area(s)

  • Carbon Nanorings, Carbon Nanotubes, Cross Sections, Displacement-Controlled Tension, Fracture, Molecular Dynamics, Temperatures, Vacancy Defects