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Superlubricity of molybdenum disulphide
Physical Review B, 1993We have studied the atomistic origins of the ultralow friction coefficient of a molybdenum disulphide (${\mathrm{MoS}}_{2}$) coating in ultrahigh vacuum conditions. A friction coefficient in the ${10}^{\mathrm{\ensuremath{-}}3}$ range is associated with friction-induced orientation of ``easy shear'' basal planes of the ${\mathrm{MoS}}_{2}$ crystal ...
, Martin +3 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 ...
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 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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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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Friction Process of Superlubricity
ASME/STLE 2012 International Joint Tribology Conference, 2012The friction process of superlubricity (μ = 0.004) obtained by phosphoric acid solution has been investigated by a traditional tribometer. The evolution of friction coefficient with time indicates that the friction process of superlubricity is divided into three stages, i.e.
Jinjin Li, Chenhui Zhang, Jianbin Luo
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Superlubricity: a state of vanishing friction
Wear, 2000Abstract The state of vanishing friction called “superlubricity” is discussed from theoretical and experimental viewpoints. We study the friction system consisting of two contacting surfaces, and derive the condition for the non-adiabatic motion of atoms to occur.
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High‐Temperature Superlubricity Microcapsules
SmallAbstract Superlubricity, characterized by an ultra‐low coefficient of friction (COF) below 0.01, is crucial for reducing energy losses in mechanical systems but remains challenging at high temperatures. This study designed a high‐temperature‐resistant solid–liquid coupled microcapsule containing perfluoropolyether
Peili Gao +6 more
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