Origin of structural defects in multiwall carbon nanotube

Author

• K.P.S.S. Hembram, Birck Nanotechnology Center, Purdue University; Indian Institute of Science (IISC)Follow
• G. Mohan Rao, Indian Institute of Science (IISC)

Abstract

We investigate the walls of the defective multiwall carbon nanotube (MWCNT), and give possible mechanism for the formation of defective structure. A generalized model has been proposed for the MWCNT. which consists of (a) catalyst part, (b) embryo part and (c) full grown part. We claim that the weak embryo portion of the MWCNT, is structurally undeveloped. The stress due to pressure imbalance between inside and outside of the MWCNT during growth along with axial load at the embryo portion causes distortion, which is the source of bending and making the walls of the MWCNT off-concentric. At the later stage the stressed embryo retain the distorted structure and get transformed into fully gown defective CNT. Published by Elsevier B.V.

Keywords

Carbon nanotube; Embryo; Off-concentric; Defects; FILAMENTS; GROWTH

DOI

10.1016/j.matlet.2011.12.078

Citation

Materials Letters Volume 72, 1 April 2012, Pages 68–70

Date of this Version

4-1-2012

Recommended Citation

Hembram, K.P.S.S. and Rao, G. Mohan, "Origin of structural defects in multiwall carbon nanotube" (2012). Birck and NCN Publications. Paper 1225.
http://dx.doi.org/10.1016/j.matlet.2011.12.078