Effect of strain engineering on superlubricity in a double-walled carbon nanotube

被引：8

作者：

Li, Jiahao ^{[1
,2
]}

Peng, Yong ^{[1
,2
]}

Tang, Xianqiong ^{[3
]}

Xu, Qian ^{[1
,4
]}

Bai, Lichun ^{[1
,4
]}

机构：

[1] Cent South Univ, Sch Traff & Transportat Engn, Minist Educ, Key Lab Traff Safety Track, Changsha 410075, Peoples R China

[2] Cent South Univ, Natl & Local Joint Engn Res Ctr Safety Technol Ra, Changsha 410075, Peoples R China

[3] Xiangtan Univ, Dept Civil Engn & Mech, Xiangtan 411105, Peoples R China

[4] Cent South Univ, Joint Int Res Lab Key Technol Rail Traff Safety, Changsha 410075, Peoples R China

来源：

PHYSICAL CHEMISTRY CHEMICAL PHYSICS | 2021年 / 23卷 / 08期

基金：

中国国家自然科学基金;

关键词：

MECHANICAL-PROPERTIES; SLIDING BEHAVIOR; FRICTION; GRAPHENE; EVOLUTION;

D O I：

10.1039/d0cp06052f

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

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.

引用

页码：4988 / 5000

页数：13

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