Temperature effects on the friction characteristics of graphene

Journal Article · Mon Jul 06 00:00:00 EDT 2015 · Applied Physics Letters

DOI:https://doi.org/10.1063/1.4923248· OSTI ID:22483140

Zhang, Yan; Dong, Mei; Gueye, Birahima; Ni, Zhonghua; Wang, Yujuan; Chen, Yunfei ^[1]

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1. Jiangsu Key Laboratory for Design and Manufacture of Micro-Nano Biomedical Instruments, School of Mechanical Engineering, Southeast University, Nanjing 211189 (China)

An atomic force microscope is used to study the nanoscale frictional characteristics of graphene exfoliated onto weakly adherent silica substrates. Different from the decrease in the friction force with temperature for Si tips sliding on silica substrates, the friction forces for the same tip sliding on a graphene surface have an increasing trend with temperature. Through exploring the morphologies of graphene in both suspended and supported states and at different temperatures, it is found that surface fluctuations are the main reason behind the suppression of the thermal lubrication, which leads to an increase in the friction force with temperature.

• OSTI ID: 22483140
• Journal Information: Applied Physics Letters, Vol. 107, Issue 1; Other Information: (c) 2015 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA); ISSN 0003-6951
• Country of Publication: United States
• Language: English

Related Subjects

71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
ATOMIC FORCE MICROSCOPY
FLUCTUATIONS
FRICTION
GRAPHENE
LUBRICATION
MORPHOLOGY
NANOSTRUCTURES
SILICA
SUBSTRATES
SURFACES
TEMPERATURE DEPENDENCE