Robust microscale superlubricity under high contact pressure enabled by graphene-coated microsphere

	Robust microscale superlubricity under high contact pressure enabled by graphene-coated microsphere
	Liu, Shu-Wei 1; Wang, Hua-Ping 2; Xu, Qiang 3; Ma, Tian-Bao 1; Yu, Gui 2; Zhang, Chenhui 1; Geng, Dechao 2; Yu, Zhiwei 1; Zhang, Shengguang 3; Wang, Wenzhong 3
刊名	NATURE COMMUNICATIONS
	2017-02-14
卷号	8
英文摘要	Superlubricity of graphite and graphene has aroused increasing interest in recent years. Yet how to obtain a long-lasting superlubricity between graphene layers, under high applied normal load in ambient atmosphere still remains a challenge but is highly desirable. Here, we report a direct measurement of sliding friction between graphene and graphene, and graphene and hexagonal boron nitride (h-BN) under high contact pressures by employing graphene-coated microsphere (GMS) probe prepared by metal-catalyst-free chemical vapour deposition. The exceptionally low and robust friction coefficient of 0.003 is accomplished under local asperity contact pressure up to 1 GPa, at arbitrary relative surface rotation angles, which is insensitive to relative humidity up to 51% RH. This ultralow friction is attributed to the sustainable overall incommensurability due to the multi-asperity contact covered with randomly oriented graphene nanograins. This realization of microscale superlubricity can be extended to the sliding between a variety of two-dimensional (2D) layers.
语种	英语
内容类型	期刊论文
源URL	[http://ir.iccas.ac.cn/handle/121111/38068]
专题	化学研究所_有机固体实验室
作者单位	1.Tsinghua Univ, State Key Lab Tribol, Beijing 100084, Peoples R China 2.Chinese Acad Sci, Inst Chem, Beijing Natl Lab Mol Sci, Beijing 100190, Peoples R China 3.Beijing Inst Technol, Sch Mech Engn, Beijing 100081, Peoples R China
推荐引用方式 GB/T 7714	Liu, Shu-Wei,Wang, Hua-Ping,Xu, Qiang,et al. Robust microscale superlubricity under high contact pressure enabled by graphene-coated microsphere[J]. NATURE COMMUNICATIONS,2017,8.
APA	Liu, Shu-Wei.,Wang, Hua-Ping.,Xu, Qiang.,Ma, Tian-Bao.,Yu, Gui.,...&Luo, Jianbin.(2017).Robust microscale superlubricity under high contact pressure enabled by graphene-coated microsphere.NATURE COMMUNICATIONS,8.
MLA	Liu, Shu-Wei,et al."Robust microscale superlubricity under high contact pressure enabled by graphene-coated microsphere".NATURE COMMUNICATIONS 8(2017).