Results 21 to 30 of about 1,899 (209)
Investigation of the running-in process in photoinduced superlubricity
Frontiers in Materials, 2023 Photoinduced superlubricity on TiO2 surfaces is a newfound phenomenon which draws researchers’ attention. This study provides a new method to achieve superlubricity (COF<0.01) with an external light field. However, photoinduced superlubricity can only
Ke Han +4 more
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Physical Review Letters, 2004 Using a home-built frictional force microscope that is able to detect forces in three dimensions with a lateral force resolution down to 15 pN, we have studied the energy dissipation between a tungsten tip sliding over a graphite surface in dry contact.
Dienwiebel, M. +5 more
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Friction, 2020 Superlubricity has been developing very rapidly in recent years as a new and important area in tribology. Many new phenomena and materials, as well as some new mechanisms in both liquid and solid superlubricity have been obtained.
Jianbin Luo, Xiang Zhou
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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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Predicting the lifetime of superlubricity [PDF]
EPL (Europhysics Letters), 2015 The concept of superlubricity has recently called upon notable interest after the demonstration of ultralow friction between atomistically smooth surfaces in layered materials. However, the energy dissipation process conditioning the sustainability of superlubric state has not yet been well understood.
Wang, A.L., He, Q.-C., Xu, Z.P.
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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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Impact of Static Distortion Waves on Superlubricity. [PDF]
ACS Omega, 2023 Friction is a major source of energy loss in mechanical devices. This energy loss may be minimized by creating interfaces with extremely reduced friction, i.e. superlubricity. Conventional wisdom holds that incommensurate interface structures facilitate superlubricity.
Hörmann L, Cartus JJ, Hofmann OT.
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Macroscale Superlubricity Achieved With Various Liquid Molecules: A Review
Frontiers in Mechanical Engineering, 2019 Superlubricity is generally classified as solid superlubricity and liquid superlubricity according to the lubricants involved at the interfaces, and is a popular research topic in tribology, which is closely linked to energy dissipation.
Xiangyu Ge, Jinjin Li, Jianbin Luo
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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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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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