Results 31 to 40 of about 1,899 (209)
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
openaire +5 more sources
Photoinduced superlubricity on TiO2 surfaces
Friction, 2023 Superlubricity control is of great interest in both industry and scientific research, and several methods have been proposed to achieve this goal. In this work, ultraviolet (UV) light was introduced into titanium dioxide (TiO2) and silicon nitride (Si3N4)
Ke Han, Liran Ma, Yu Tian, Jianbin Luo
doaj +1 more source
npj 2D Materials and Applications, 2021 Superlubricity has recently raised an increasing interest owing to its great potential in energy saving and environmental benefits. Yet how to obtain stable superlubricity under an ultrahigh contact pressure (>1 GPa) still remains a challenge.
Xiaoyong Ren +7 more
doaj +1 more source
Macroscale Superlubricity of Black Phosphorus Quantum Dots
Lubricants, 2022 In the present work, Black Phosphorus Quantum Dots (BPQDs) were synthesized via sonication-assisted liquid-phase exfoliation. The average size of the BPQDs was 3.3 ± 0.85 nm.
Penghui Gong +4 more
doaj +1 more source
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
openaire +2 more sources
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
doaj +1 more source
Role of surface roughness in superlubricity [PDF]
Journal of Physics: Condensed Matter, 2006 11 pages, 17 figures, format ...
Tartaglino, Ugo +2 more
openaire +3 more sources
Progress in Superlubricity Across Different Media and Material Systems—A Review
Frontiers in Mechanical Engineering, 2022 Superlubricity is a terminology often used to describe a sliding regime in which the adhesion leading to friction or resistance to sliding literally vanishes.
Aditya Ayyagari +3 more
doaj +1 more source
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.
openaire +4 more sources
Journal of Materials Research and TechnologyTo improve the tribological properties of polyurethane (PU) based water-lubricated bearings specifically under severe conditions, expanded graphite/paraffin (EG/paraffin) is synthesized as self-lubricating additives and incorporated into the polyurethane
Jiangbo Li +6 more
doaj +1 more source