Abstract
Understanding and controlling nanofriction are important in practical applications of nanotechnology. Our first-principles calculations reveal that interlayer nanofriction between two graphene layers can be tuned by applying an external electric field; the tuned magnitude of the coefficient of friction ranges from −30 to 30 %, which is attributed to the increased disparity of electronic structures between AA and AB stackings. This effect is significantly observed in boron- or nitrogen-doped systems compared with a pristine graphene system. Our findings present a feasible and precise strategy to tune the frictional properties of graphene systems.
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Acknowledgments
The work was supported by the National Basic Research Program of China (Grant No. 2012CB921300), National Natural Science Foundation of China (Grant Nos. 11447155, 11274280), Natural Science Foundation of Henan Province (Grant No. 142300410250) and Foundation of Henan Educational Committee (Grant No. 14A140025).
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Wang, J., Li, J., Li, C. et al. Tuning the Nanofriction Between Two Graphene Layers by External Electric Fields: A Density Functional Theory Study. Tribol Lett 61, 4 (2016). https://doi.org/10.1007/s11249-015-0624-0
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DOI: https://doi.org/10.1007/s11249-015-0624-0