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Phase transition structural superlubricity

Jin, Bao (author)
State Key Laboratory of Tribology, Tsinghua University, Beijing 100084, P.R. China; Department of Mechanical Engineering, Tsinghua University, Beijing 100084, P.R. China
Zhang, He (author)
Beijing National Laboratory for Condensed Matter Physics and Institute of Physics, Chinese Academy of Sciences, Beijing 100190, P.R. China; School of Physical Sciences, University of Chinese Academy of Sciences, Beijing 100049, P.R. China
Chen, Guangyan (author)
State Key Laboratory of Tribology, Tsinghua University, Beijing 100084, P.R. China; Department of Mechanical Engineering, Tsinghua University, Beijing 100084, P.R. China
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Meng, Ting (author)
CAS Key Laboratory of Standardization and Measurement for Nanotechnology, CAS Center for Excellence in Nanoscience, National Center for Nanoscience and Technology (NCNST), Beijing 100190, P.R. China
Zhao, Jun (author)
Luleå tekniska universitet,Maskinelement,School of Mechanical Engineering, Beijing Institute of Technology, Beijing 100081, China
Zhang, Minyi (author)
Department of Materials, University of Oxford, Oxford OX1 3PH, UK
Cao, Yuwei (author)
State Key Laboratory of Tribology, Tsinghua University, Beijing 100084, P.R. China; Department of Mechanical Engineering, Tsinghua University, Beijing 100084, P.R. China
Fang, Dazhen (author)
State Key Laboratory of Tribology, Tsinghua University, Beijing 100084, P.R. China; Department of Mechanical Engineering, Tsinghua University, Beijing 100084, P.R. China
He, Yongyong (author)
State Key Laboratory of Tribology, Tsinghua University, Beijing 100084, P.R. China; Department of Mechanical Engineering, Tsinghua University, Beijing 100084, P.R. China
Zhang, Chenhui (author)
State Key Laboratory of Tribology, Tsinghua University, Beijing 100084, P.R. China; Department of Mechanical Engineering, Tsinghua University, Beijing 100084, P.R. China
Yu, Xiaohui (author)
Beijing National Laboratory for Condensed Matter Physics and Institute of Physics, Chinese Academy of Sciences, Beijing 100190, P.R. China
Zeng, Qingdao (author)
CAS Key Laboratory of Standardization and Measurement for Nanotechnology, CAS Center for Excellence in Nanoscience, National Center for Nanoscience and Technology (NCNST), Beijing 100190, P.R. China
Luo, Jianbin (author)
State Key Laboratory of Tribology, Tsinghua University, Beijing 100084, P.R. China; Department of Mechanical Engineering, Tsinghua University, Beijing 100084, P.R. China
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State Key Laboratory of Tribology, Tsinghua University, Beijing 100084, PR. China; Department of Mechanical Engineering, Tsinghua University, Beijing 100084, P.R. China Beijing National Laboratory for Condensed Matter Physics and Institute of Physics, Chinese Academy of Sciences, Beijing 100190, P.R. China; School of Physical Sciences, University of Chinese Academy of Sciences, Beijing 100049, P.R. China (creator_code:org_t)
2024
2024
English.
In: Matter. - : Cell Press. - 2590-2393 .- 2590-2385.
Related links:
https://urn.kb.se/re...
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https://doi.org/10.1...
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  • Journal article (peer-reviewed)
Abstract Subject headings
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  • Structural superlubricity refers to a state with almost vanishing friction and wear between crystalline surfaces in incommensurate configurations. However, thus far, this phenomenon has been observed only at solid-solid interfaces. Here, we constructed an in situ heterojunction between a crystalline boundary tribofilm and a pressure-induced solid-phase 1–dodecanol molecular layer, achieving structural superlubricity in a liquid-solid interface. This novel superlubricity state, termed phase transition structural superlubricity (PTSS), is induced by incommensurate slip at the in situ heterojunction. Atomic force microscopy experiments and molecular dynamics simulations demonstrated that the friction of in situ heterojunction exhibits a periodicity of 180°. Notably, the PTSS arises when the molecular axis of 1–dodecanol is oriented 90° to the direction of friction. These findings provide a novel design strategy for structural superlubricity and bridge the gap between liquid and solid superlubricity, shedding substantial light upon achieving structural superlubricity across a broad range of environments.

Subject headings

TEKNIK OCH TEKNOLOGIER  -- Maskinteknik -- Annan maskinteknik (hsv//swe)
ENGINEERING AND TECHNOLOGY  -- Mechanical Engineering -- Other Mechanical Engineering (hsv//eng)

Keyword

Machine Elements
Maskinelement

Publication and Content Type

ref (subject category)
art (subject category)

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