Results 41 to 50 of about 1,483 (193)
Rotational Instability in Superlubric Joints [PDF]
Physical Review Letters, 2019 Surface and interfacial energies play important roles in a number of instability phenomena in liquids and soft matters, but are rare to play a similar role in solids. Here we report a new type of mechanical instabilities that are controlled by surface and interfacial energies and are valid for a large class of materials, in particular two-dimensional ...
Cangyu, Qu +3 more
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Editorial: Superlubricity across the scales
Frontiers in Chemistry, 2022 Article talks about how while the idea of frictionless surfaces and the associated implications of vanishing energy losses during mechanical motion have been part of science fiction culture, scientists in the real world work toward realizing this ambitious goal that was once thought to be unattainable.
Baykara, Mehmet Z +2 more
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The effect of temperature and velocity on superlubricity [PDF]
Journal of Physics: Condensed Matter, 2012 We study the effects of temperature and sliding velocity on superlubricity in numerical simulations of the Frenkel-Kontorova model. We show that resonant excitations of the phonons in an incommensurate sliding body lead to an effective friction and to thermal equilibrium with energy distributed over the internal degrees of freedom.
Ende, J.A. van den +2 more
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Graphite superlubricity enabled by triboinduced nanocontacts [PDF]
, 2023 Colloidal probe Atomic Force Microscopy allows to explore sliding states of vanishing friction, i.e. superlubricity, in mesoscopic graphite contacts.
Gerbi, Andrea +4 more
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Observation of Microscale Superlubricity in Graphite [PDF]
Physical Review Letters, 2012 Upon shearing a microscale lithographically defined graphite mesa, the sheared section retracts spontaneously to minimize interface energy. Here, we demonstrate a sixfold symmetry of the self-retraction and provide a first experimental estimate of the frictional force involved, as direct evidence that the self-retraction is due to superlubricity, where
Ze, Liu +8 more
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Friction, 2018 In thin-film lubrication (TFL), generally, the viscosity of the lubricant and its coefficient of friction (CoF) increase. Finding a method to reduce the CoF in TFL is a significant challenge for tribologists.
Xiangyu Ge +3 more
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Robust microscale structural superlubricity between graphite and nanostructured surface
Nature Communications, 2023 Structural superlubricity is a state of nearly zero friction and no wear between two contacted solid surfaces. However, such state has a certain probability of failure due to the edge defects of graphite flake.
Xuanyu Huang +9 more
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Atomistics of superlubricity [PDF]
Friction, 2014 Abstract Friction is a phenomenon observed ubiquitously in daily life, yet its nature is complicated. Friction between rough surfaces is considered to arise primarily because of macroscopic roughness. In contrast, interatomic forces dominate between clean and smooth surfaces.
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Stability of superlubric sliding on graphite [PDF]
Physical Review E, 2010 Recent AFM experiments have shown that the low-friction sliding of incommensurate graphite flakes on graphite can be destroyed by torque-induced rotations. Here we theoretically investigate the stability of superlubric sliding against rotations of the flake. We find that the occurrence of superlubric motion critically depends on the physical parameters
Wijn, A.S. de, Fusco, C., Fasolino, A.
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Emerging superlubricity: A review of the state of the art and perspectives on future research [PDF]
, 2018 We present a review of superlubricity: the state of ultra-low friction between surfaces in relative motion. Various approaches to achieving this state are considered in a broad sense, including structural superlubricity, superlubricity via normal force ...
Mohammad R. Vazirisereshk +5 more
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