The phonon dissipation mode in nanofriction

doi:10.1115/IMECE201666402

CORC > 兰州理工大学 > 兰州理工大学 > 机电工程学院

	The phonon dissipation mode in nanofriction
	Duan, Zaoqi 2; Cai, Shuang 2; Zhang, Yan 2; Chen, Yunfei 2; Dong, Yun 1,2
	2016
会议日期	November 11, 2016 - November 17, 2016
会议地点	Phoenix, AZ, United states
关键词	Friction Graphene Molecular dynamics Nanosystems Temperature Velocity Atomic scale frictions Change of temperatures Low temperatures Molecular dynamics simulations Phonon frequencies Sliding frequency Sliding velocities Theoretical research
卷号	10
DOI	10.1115/IMECE201666402
英文摘要	The phonon dissipation is investigated through molecular dynamics (MD) simulation modeling graphene flake sliding on supported graphene in this paper. With the help of the advantage of MD, we explore the phonon mode variation of the substrate induced by the behavior of friction in terms of phonon densities of states. Moreover, phonon dissipation modes connected with the relative sliding velocity and the temperature of system are established respectively. The simulation results demonstrate phonon dissipation is represented as special phonon frequencies while those are closely related to the sliding velocities but would not shift as the change of temperatures. For an explanation of the special frequencies, we further simplify the model by directly adding the velocity to the atoms of the flake in the MD model, although it is impractical. It is found that a special frequency of phonon dissipation is generally in agreement with the sliding frequency at low temperature eliminating the interference of temperature in a range of velocities from 50m/s to 250m/s, namely, the velocity is directly related to the modes of phonon dissipation and friction, which is consistent with the previously reported result[1] that the velocity is an influence factor for friction both in experimental and theoretical researches. Therefore, the relationship makes possible the active control of friction. It is the first step toward using this method to reveal the fundamental questions in the study of atomic-scale friction. Copyright © 2016 by ASME.
会议录	ASME International Mechanical Engineering Congress and Exposition, Proceedings (IMECE)
会议录出版者	American Society of Mechanical Engineers (ASME)
语种	英语
内容类型	会议论文
源URL	[http://ir.lut.edu.cn/handle/2XXMBERH/117454]
专题	机电工程学院
作者单位	1.School of Mechanical and Electronical Engineering, Lanzhou University of Technology, Lanzhou, Gansu, China 2.School of Mechanical Engineering and Jiangsu, Key Laboratory for Design and Manufacture of Micro-Nano Biomedical Instruments, Southeast University, Nanjing, Jiangsu, China;
推荐引用方式 GB/T 7714	Duan, Zaoqi,Cai, Shuang,Zhang, Yan,et al. The phonon dissipation mode in nanofriction[C]. 见:. Phoenix, AZ, United states. November 11, 2016 - November 17, 2016.