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影响因子：42.6

DOI码：10.1038/s41565-022-01126-z

发表刊物：Nature Nanotechnology

摘要：Friction and wear are detrimental to functionality and reduce the service life of products with mechanical elements. Here, we unveil the atomic-scale friction of a single tungsten asperity in real time through a high-resolution transmission electron microscopy investigation of a nanocontact in countermotion, induced through a piezo actuator. Molecular dynamics simulations provide insights into the sliding pathway of interface atoms and the dynamic strain/stress evolution at the interface. We observe a discrete stick–slip behaviour and an asynchronous process for the accumulation and dissipation of the strain energy together with the non-uniform motion of interface atoms. Our methodology allows for studying in situ atomic-friction phenomena and provides insights into friction phenomena at the atomic scale.

合写作者：Yang He, Susheng Tan

第一作者：Xiang Wang, Zhenyu Liu

论文类型：期刊论文

通讯作者：Guofeng Wang, Scott X. Mao

学科门类：工学

文献类型：J

卷号：17

期号：7

页面范围：737-745

是否译文：否

发表时间：2022-05-23

收录刊物：SCI

发布期刊链接：https://doi.org/10.1038/s41565-022-01126-z