Issue 33, 2016

Mechanical properties of zigzag-shaped carbon nanotubes: the roles of the geometric parameters

Abstract

In our previous work, we predicted that zigzag-shaped carbon nanotubes (Z-CNTs) show significant electromechanical properties where under uniaxial tensile strain, a semiconductor-to-metal or metal-to-semiconductor transition can be observed [Phys. Chem. Chem. Phys., 2013, 15, 17134–17141]. Thus, investigating the mechanical properties of Z-CNTs is of key importance for exploring their applications in mechanical and electromechanical devices. Here, a series of Z-CNTs of different geometric parameters were constructed and optimized using the density functional method. Mechanical properties, such as intrinsic strength, Young's modulus and elastic constant, were studied to find their relationships to geometric parameters. Generally, all of the intrinsic strength, Young's modulus and elastic constant increase with increasing tubular radius, but decrease with increasing the pitch. In particular, fitting formulae were given to describe the relationships between the intrinsic strength/Young's modulus and the tubular radius, which show exponential relationships. Explanations were also given for dependence of mechanical properties on the geometric parameters of the Z-CNTs.

Graphical abstract: Mechanical properties of zigzag-shaped carbon nanotubes: the roles of the geometric parameters

Supplementary files

Article information

Article type
Paper
Submitted
15 Jan 2016
Accepted
09 Mar 2016
First published
11 Mar 2016

RSC Adv., 2016,6, 27999-28004

Mechanical properties of zigzag-shaped carbon nanotubes: the roles of the geometric parameters

L. Liu, RSC Adv., 2016, 6, 27999 DOI: 10.1039/C6RA01260D

To request permission to reproduce material from this article, please go to the Copyright Clearance Center request page.

If you are an author contributing to an RSC publication, you do not need to request permission provided correct acknowledgement is given.

If you are the author of this article, you do not need to request permission to reproduce figures and diagrams provided correct acknowledgement is given. If you want to reproduce the whole article in a third-party publication (excluding your thesis/dissertation for which permission is not required) please go to the Copyright Clearance Center request page.

Read more about how to correctly acknowledge RSC content.

Social activity

Spotlight

Advertisements