Phononic Friction in Monolayer/Bilayer Graphene

doi:10.1007/s11249-022-01612-4

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	Phononic Friction in Monolayer/Bilayer Graphene
	Dong, Yun 1,2; Hui, Weibin 1; Lian, Fangming 1; Ding, Yusong 1; Rui, Zhiyuan 1
刊名	Tribology Letters
	2022-09-01
卷号	70 期号:3
关键词	Graphene Molecular dynamics Monolayers Phonons Thermal conductivity Acoustic phonons Acoustic-phonons Bilayer Graphene Monolayer/bilayer graphene Normal loads Phonon mode Phonon spectrum Phononic frictions Sliding process Sliding velocities
ISSN号	1023-8883
DOI	10.1007/s11249-022-01612-4
英文摘要	Abstract: Herein, frictional phonon dissipation in monolayer/bilayer graphene was modeled using phonon spectra based on molecular dynamics simulations. The results indicate that the number of excited acoustic phonon modes is the primary reason for increased friction. Specifically, the frequencies of flexural acoustic modes shifted to high levels as thickness increased during the sliding process, resulting in increased friction. The increase in friction with sliding velocity is caused by an increase in the number of in-plane acoustic modes. Higher normal loads can increase both the in-plane and flexural acoustic modes, leading to increased friction. Our observations further suggest that the variation in temperature at the friction interface results from the competition between frictional energy and thermal conductivity. Both high normal loads and thick layers increase the thermal conductivity, ultimately improving the friction dissipation efficiency. Hence, it can be concluded that the increase in thermal conductivity is the reason for the counterintuitive decrease in the interfacial temperature resulting from high friction. Graphical Abstract: [Figure not available: see fulltext.] © 2022, The Author(s), under exclusive licence to Springer Science+Business Media, LLC, part of Springer Nature.
WOS研究方向	Engineering
语种	英语
出版者	Springer
WOS记录号	WOS:000800760700001
内容类型	期刊论文
源URL	[http://ir.lut.edu.cn/handle/2XXMBERH/158393]
专题	机电工程学院兰州理工大学
作者单位	1.School of Mechanical and Electrical Engineering, Lanzhou University of Technology, Lanzhou; 730050, China; 2.Institute of Nanomaterials Application Technology, Gansu Academy of Sciences, Lanzhou; 730000, China
推荐引用方式 GB/T 7714	Dong, Yun,Hui, Weibin,Lian, Fangming,et al. Phononic Friction in Monolayer/Bilayer Graphene[J]. Tribology Letters,2022,70(3).
APA	Dong, Yun,Hui, Weibin,Lian, Fangming,Ding, Yusong,&Rui, Zhiyuan.(2022).Phononic Friction in Monolayer/Bilayer Graphene.Tribology Letters,70(3).
MLA	Dong, Yun,et al."Phononic Friction in Monolayer/Bilayer Graphene".Tribology Letters 70.3(2022).