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Open Access Nano Express

Effect of Topological Defects on Buckling Behavior of Single-walled Carbon Nanotube

Ali Reza Ranjbartoreh12* and Guoxiu Wang2

Author Affiliations

1 School of Mechanical Engineering, Faculty of Engineering, University of Technology Sydney, Office 3. 29, Building 4, Harris St, Broadway, Sydney, NSW 2007, Australia

2 Department of Chemistry and Forensic Science, University of Technology, Sydney, NSW 2007, Australia

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Nanoscale Res Lett 2011, 6:28  doi:10.1007/s11671-010-9776-x

Published: 5 September 2010

Abstract

Molecular dynamic simulation method has been employed to consider the critical buckling force, pressure, and strain of pristine and defected single-walled carbon nanotube (SWCNT) under axial compression. Effects of length, radius, chirality, Stone–Wales (SW) defect, and single vacancy (SV) defect on buckling behavior of SWCNTs have been studied. Obtained results indicate that axial stability of SWCNT reduces significantly due to topological defects. Critical buckling strain is more susceptible to defects than critical buckling force. Both SW and SV defects decrease the buckling mode of SWCNT. Comparative approach of this study leads to more reliable design of nanostructures.

Keywords:
Molecular dynamic simulation; Buckling; Single-walled carbon nanotube (SWCNT); Stone–Wales (SW) defect; Single vacancy (SV) defect