The effect of substrate on the tribological properties of graphene

2020 IEEE 15th International Conference on Nano/Micro Engineered and Molecular System (NEMS) Pub Date : 2020-09-27 DOI:10.1109/NEMS50311.2020.9265622

Xin Feng, Lingling Li, Zhiyong Wei

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引用次数: 1

Abstract

The tribological properties of graphene on different substrates, such as SiO2, bulk-like MoS2, graphite and PDMS, was studied by atomic force microscopy (AFM) to establish the relationship between tribological properties and interfacial interactions. The result showed that the mechanically exfoliated graphene has low friction on an atomic flat substrate, such as graphite and bulk MoS2. Moreover, graphene on a soft elastic substrate, such as PDMS will show much higher friction force than that on hard SiO2. Besides, the SiO2 substrate with the plasma treatment can efficiently reduce the friction force of graphene. The friction measurements showed that adhesive attraction between graphene and underlying surface is particularly significant to the tribological properties of graphene. This result can be used for the fabrication of 2D material device with reliable and high performance since the interaction between 2D materials and underlying surface can be modulated by adjusting the topography of both surfaces.

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衬底对石墨烯摩擦学性能的影响

利用原子力显微镜(AFM)研究了石墨烯在SiO2、大块状MoS2、石墨和PDMS等不同基体上的摩擦学性能，建立了摩擦学性能与界面相互作用之间的关系。结果表明，机械剥离的石墨烯在原子平面衬底(如石墨和大块二硫化钼)上具有低摩擦。此外，石墨烯在软弹性衬底(如PDMS)上的摩擦力要比在硬SiO2上的摩擦力大得多。此外，经过等离子体处理的SiO2衬底可以有效地降低石墨烯的摩擦力。摩擦测量结果表明，石墨烯与下垫面之间的黏合剂吸引力对石墨烯的摩擦学性能尤为重要。由于可以通过调节二维材料与下垫面的形貌来调节其相互作用，因此该结果可用于制造具有可靠和高性能的二维材料器件。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

2020 IEEE 15th International Conference on Nano/Micro Engineered and Molecular System (NEMS)

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