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Tribochemistry of superlubricating amorphous carbon films
Chemical Communications, 2021The recent progress in the superlubricity mechanism and properties regulation of DLC films is introduced from the perspective of tribochemistry.
Dongxiang Zhu +4 more
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ACS Applied Materials & Interfaces
Superlubricity, a lubricating state in which the coefficient of friction (COF) is smaller than 0.01, has been achieved at the macroscale in a variety of aqueous solutions and oils, as well as two-dimensional (2D) and carbon materials; nevertheless, it has been rarely realized with polymer composites.
Yi Zhang +10 more
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Superlubricity, a lubricating state in which the coefficient of friction (COF) is smaller than 0.01, has been achieved at the macroscale in a variety of aqueous solutions and oils, as well as two-dimensional (2D) and carbon materials; nevertheless, it has been rarely realized with polymer composites.
Yi Zhang +10 more
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Robust superlubricity by strain engineering
Nanoscale, 2019We demonstrate that robust superlubricity can be achieved via both biaxial and uniaxial tensile strains in a substrate using molecular dynamics simulation. Above a critical strain, the friction is no longer dependent on the relative orientation between the surfaces mainly due to the complete lattice mismatch.
Kunqi Wang +4 more
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Collective superlubricity of graphene flakes
Journal of Physics: Condensed Matter, 2016We investigate solid lubrication of graphene and graphene flakes using atomistic molecular-dynamics simulations. We find that graphene flakes yield lower friction than graphene as a result of a collective mechanism that emerges from the independent behaviour of the flakes.
Wijk, M.M. van +2 more
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2016
Superlubricity means non-sticky and frictionless when two bodies are set contacting motion. Although this occurrence has been extensively investigated since 1859 when Faraday firstly proposed a quasiliquid skin on ice, the mechanism behind the superlubricity remains debating.
Chang Q. Sun, Yi Sun
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Superlubricity means non-sticky and frictionless when two bodies are set contacting motion. Although this occurrence has been extensively investigated since 1859 when Faraday firstly proposed a quasiliquid skin on ice, the mechanism behind the superlubricity remains debating.
Chang Q. Sun, Yi Sun
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Superlubricity between MoS2 Monolayers
Advanced Materials, 2017The ultralow friction between atomic layers of hexagonal MoS2, an important solid lubricant and additive of lubricating oil, is thought to be responsible for its excellent lubricating performances. However, the quantitative frictional properties between MoS2 atomic layers have not been directly tested in experiments due to the lack of conventional ...
He, Li +6 more
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Superlubrication by phonon confinement
Physical Review B, 2018The superlubrication described here, involving confined phonons, is easily achievable and very simple because it uses only submicron islands, smaller than the mean free path of the phonons, to confine phonons. We can achieve superlubrication with a friction force of piconewton order at the submicron island. We can call this phononic lubrication or self-
Noriyuki Wada +5 more
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Structural Superlubricity Based on Crystalline Materials
Small, 2019AbstractHerein, structural superlubricity, a fascinating phenomenon where the friction is ultralow due to the lateral interaction cancellation resulted from incommensurate contact crystalline surfaces, is reviewed. Various kinds of nano‐ and microscale materials such as 2D materials, metals, and compounds are used for the fabrication.
Yiming Song +3 more
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Superlubricity: when friction stops
Physics World, 1997The frictional properties of materials were first scientifically described by Leonardo da Vinci over 400 years ago. Since then, a wealth of experimental data have shown that a force must be applied for two bodies in contact to slide past each other with constant velocity: in other words, energy is dissipated during friction. Although the role of atomic
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Superlubricity in Gemini Hydrogels
Journal of Tribology, 2016Gemini hydrogels have repeatedly produced low friction under conditions generally not thought to be favorable to superlubricity: low sliding speeds, low contact pressures, macroscopic contact areas, and room temperature aqueous environments. A proposed explanation for this unique behavior is that thermal fluctuations at the interface are sufficient to ...
Angela A. Pitenis +4 more
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