Results 21 to 30 of about 581 (170)
Overcoming friction and steps towards superlubricity: A review of underlying mechanisms
Applied Surface Science Advances, 2021 Herein, we present a topical review of the advances and the mechanisms involved in achieving superlubricity - the regime of friction in which the coefficient of friction (COF) is less than 0.01. In light of the race towards achieving superlubricity on an
Himanshu Shekhar, Ravikumar Dumpala
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Electrically Tunable Friction: From Sticky to Slippery with Ionic Hydrogels. [PDF]
Adv MaterThis work demonstrates electrically tunable friction “from sticky to slippery” using ionic hydrogels, achieving reversible more‐than‐fifty‐fold modulation without liquid lubricants. An electric field extracts a salt‐rich interfacial layer that dramatically reduces friction.
Liu C +9 more
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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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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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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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Superlubricity in Layered Nanostructures [PDF]
, 2014 Interaction between two surfaces in relative motion can give rise to energy dissipation and hence sliding friction. A significant portion of the energy is dissipated through the creation of non-equilibrium phonons. Recent advances in material synthesis have made the production of specific single layer honeycomb structures and their multilayer phases ...
Cahangirov, S., Ciraci, S.
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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
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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
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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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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
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