The influence of vacancy defects on the structural properties of single-walled carbon nanotubes

Abstract

The work is devoted to the theoretical substantiation of the directional change in the structure of SWCNTs under ion irradiations of Ar++. It is shown that the introduction of vacancy defects in the structure of the graphene sheet leads to a significant change in its geometric characteristics. The values of the bends of graphene sheet are given depending on the number of vacancy defects. The data of theoretical calculations are confirmed by experimental studies of SWCNT using the methods of Raman spectroscopy and transmission electron microscopy.

Keywords

• nanosensorics
• carbon nanotubes
• ion irradiations
• transmission electron microscopy
• raman spectroscopy
• density functional theory