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Friction behaviors of two-dimensional materials at the nanoscale

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Two-dimensional (2D) layered materials such as graphene, hexagonal boron nitride, molybdenum disulfide and alike possess unique frictional properties, making them promising candidates as (additives to) lubricants for friction reduction and wear protection, especially in micro- and nano-electromechanical systems. To truly apply these materials, it is essential to understand friction at the nanoscale level. In recent decades, with the development of atomic and friction force microscopy and atomistic simulation tools, our understanding of the friction of 2D materials has substantially increased. Herein, we summarize the essential friction behaviors of 2D materials as well as the underlying physical mechanisms explored by friction force microscopy. In particular, the effects of atomic structures and external factors on friction, and the strategies to realize the modulation of friction are discussed. Finally, the challenges in practical applications of 2D materials as atomically thin lubricants and the perspectives for future progression are provided.

Original languageEnglish
Article number100771
JournalMaterials Today Physics
Number of pages15
Publication statusPublished - Oct 2022

Bibliographical note

Funding Information:
This work was funded by the Grant for Taishan Scholar Advantage Characteristic Discipline of Shandong Province, the Start-up Grant for QiLu Young Scholars of Shandong University , the Grant from Danish Council for Independent Research ( 9040-00219B ), EU H2020RISE 2016‐MNR4S Cell project.

Publisher Copyright:
© 2022 The Authors

    Research areas

  • 2D materials, Friction force microscopy, Friction modulation, Friction property

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