Effect of strain engineering on superlubricity in a double-walled carbon nanotube. Issue 8 (23rd February 2021)

• Record Type: Journal Article
• Authors: Li, Jiahao; Peng, Yong; Tang, Xianqiong; Xu, Qian; Bai, Lichun
• Is Part Of: Physical chemistry chemical physics. Volume 23:Issue 8(2021)
• Page Start: 4988
• Page End: 5000
• Publication Date: 2021-02-23
• Subjects: Chemistry, Physical and theoretical -- Periodicals; 541.3
• DOI: 10.1039/d0cp06052f
• Languages: English
• ISSNs: 1463-9076

Abstract

Abstract : Strain engineering induces the achievement of superlubricity in a double-walled carbon nanotube due to the formation of a mismatched lattice constant between the two carbon nanotubes. Abstract : Double-walled carbon nanotubes (DWCNTs) have received a great deal of attention due to their great potential in the field of superlubricity. However, this superlubricity is susceptible to failure in practical applications due to the introduction of various defects. Here, a novel method based on strain engineering is employed for achieving superlubricity in the DWCNT using molecular dynamics simulations. The DWCNT exhibits a superlow friction force when an inner tube slides against a stretched outer tube even with a low content of defects. However, strain engineering shows its limitation on superlubricity in the case of a large magnitude of strain or a high content of point defects. The mechanism of superlubricity in the DWCNT could be explained by the analysis of the energy barrier.