Prediction of pull-out force of multi-walled carbon nanotube (MWCNT) in sword-in-sheath mode

Go Yamamoto, Sen Liu, Ning Hu, Toshiyuki Hashida, Yaolu Liu, Cheng Yan, Yuan Li, Hao Cui, Huiming Ning, Liangke Wu

Research output: Contribution to journalArticlepeer-review

26 Citations (Scopus)

Abstract

The pull-out force of some outer walls against other inner walls in multi-walled carbon nanotubes (MWCNTs) was systematically studied by molecular mechanics simulations. The obtained results reveal that the pull-out force is proportional to the square of the diameter of the immediate outer wall on the sliding interface, which highlights the primary contribution of the capped section of MWCNT to the pull-out force. A simple empirical formula was proposed based on the numerical results to predict the pull-out force for an arbitrary pull-out in a given MWCNT directly from the diameter of the immediate outer wall on the sliding interface. Moreover, tensile tests for MWCNTs with and without acid-treatment were performed with a nanomanipulator inside a vacuum chamber of a scanning electron microscope (SEM) to validate the present empirical formula. It was found that the theoretical pull-out forces agree with the present and some previous experimental results very well.

Original languageEnglish
Pages (from-to)7-12
Number of pages6
JournalComputational Materials Science
Volume60
DOIs
Publication statusPublished - 2012 Jul

Keywords

  • Capped section
  • Molecular mechanics simulations
  • Multi-walled carbon nanotubes
  • Pull-out force
  • Sword-in-sheath mode

ASJC Scopus subject areas

  • Computer Science(all)
  • Chemistry(all)
  • Materials Science(all)
  • Mechanics of Materials
  • Physics and Astronomy(all)
  • Computational Mathematics

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