Milestones in molecular dynamics simulations of single-walled carbon nanotube formation: A brief critical review

Stephan Irle, Yasuhito Ohta, Yoshiko Okamoto, Alister J. Page, Ying Wang, Keiji Morokuma

Research output: Contribution to journalReview articlepeer-review

53 Scopus citations

Abstract

We present a brief review of the most important efforts aimed at simulating single-walled carbon nanotube (SWNT) nucleation and growth processes using molecular dynamics (MD) techniques reported in the literature. MD simulations allow the spatio-temporal movement of atoms during nonequilibrium growth to be followed. Thus, it is hoped that a successful MD simulation of the entire SWNT formation process will assist in the design of chirality-specific SWNT synthesis techniques. We give special consideration to the role of the metal catalyst particles assumed in standard theories of SWNT formation, and describe the actual metal behavior observed in the reported MD simulations, including our own recent quantum chemical MD simulations. It is concluded that the use of a quantum potential is essential for a qualitatively correct description of the catalytic behavior of the metal cluster, and that carbide formation does not seem to be a necessary requirement for nucleation and growth of SWNTs according to our most recent quantum chemical MD simulations.

Original languageEnglish
Pages (from-to)755-767
Number of pages13
JournalNano Research
Volume2
Issue number10
DOIs
StatePublished - Oct 2009
Externally publishedYes

Funding

This work was in part supported by a Core Research for Evolutional Science and Technology (CREST) grant in the Area of High Performance Computing for Multi-Scale and Multi-Physics Phenomena from the Japan Science and Technology Agency (JST). One of the authors (SI) also acknowledges support by the Program for Improvement of Research Environment for Young Researchers from Special Coordination Funds for Promoting Science and Technology (SCF) commissioned by the Ministry of Education, Culture, Sports, Science and Technology (MEXT) of Japan. Our own simulations were performed in part using the computer resources at the Research Center for Computational Science (RCCS), Okazaki Research Facilities, National Institutes for Natural Sciences, and at the Academic Center for Computing and Media Studies (ACCMS) at Kyoto University.

Keywords

  • Carbon nanotubes
  • Molecular dynamics
  • Quantum chemistry
  • Reactive force fields
  • Transition metal catalysis

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