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Tribology Letters
Erschienen in: Tribology Letters 2/2012

01.11.2012 | Original Paper

Theoretical Study of Superlow Friction Between Two Single-Side Hydrogenated Graphene Sheets

verfasst von: Jianjun Wang, Fei Wang, Jinming Li, Sanjun Wang, Youlin Song, Qiang Sun, Yu Jia

Erschienen in: Tribology Letters | Ausgabe 2/2012

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Abstract

First-principles calculations within density functional theory were performed to predict the friction properties between two single-side hydrogenated graphene sheets at the atomic scale. In this study, the coefficients of the friction along two sliding paths were calculated under normal loads ranging from 1 to 9 nN. The calculated results show a general increase of the coefficient of friction with increasing normal load, and the coefficients of friction for this system exhibit an isotropic feature. Coefficients of friction in the range of 0.01–0.05 were predicted. Compared with clean graphene, the coefficients of friction decreased greatly due to electrons accumulating between the carbon and attached hydrogen atoms, leading to a significant decrease in the potential energy of the single-side hydrogenated graphene. This study suggests that atomic-scale friction may be controlled by adjusting the electronic structure.
Vorheriger Artikel Formation of Laminar Structure Under Unlubricated Friction of Cu–SiO2 Composite
Nächster Artikel Tribological Behavior of Polyamide 66-Based Binary and Ternary Nanocomposites

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Metadaten
Titel
Theoretical Study of Superlow Friction Between Two Single-Side Hydrogenated Graphene Sheets
verfasst von
Jianjun Wang
Fei Wang
Jinming Li
Sanjun Wang
Youlin Song
Qiang Sun
Yu Jia
Publikationsdatum
01.11.2012
Verlag
Springer US
Erschienen in
Tribology Letters / Ausgabe 2/2012
Print ISSN: 1023-8883
Elektronische ISSN: 1573-2711
DOI
https://doi.org/10.1007/s11249-012-0015-8

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