Issue 30, 2017

Superlubricity of a graphene/MoS2 heterostructure: a combined experimental and DFT study

Abstract

Graphene and other two-dimensional materials have been proved to be able to offer low friction. Here we assembled van der Waals heterostructures with graphene and molybdenum disulphide monolayers. The Raman spectrum together with a modified linear chain model indicate a two-orders-of-magnitude decrease in the interlayer lateral force constant, as compared with their homogeneous bilayers, indicating a possible routine to achieve superlubricity. The decrease in the interlayer lateral force constant is consistent with the ultrasmall potential energy corrugation during sliding, which is derived from density functional theory calculations. The potential energy corrugation is found to be determined by the sliding-induced interfacial charge density fluctuation, suggesting a new perspective to understand the physical origin of the atomic scale friction of two-dimensional materials.

Graphical abstract: Superlubricity of a graphene/MoS2 heterostructure: a combined experimental and DFT study

Article information

Article type
Paper
Submitted
28 feb 2017
Accepted
02 jul 2017
First published
04 jul 2017

Nanoscale, 2017,9, 10846-10853

Superlubricity of a graphene/MoS2 heterostructure: a combined experimental and DFT study

L. Wang, X. Zhou, T. Ma, D. Liu, L. Gao, X. Li, J. Zhang, Y. Hu, H. Wang, Y. Dai and J. Luo, Nanoscale, 2017, 9, 10846 DOI: 10.1039/C7NR01451A

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