Results 31 to 40 of about 1,483 (193)
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
Hörmann L, Cartus JJ, Hofmann OT.
europepmc +2 more sources
Macroscale Superlubricity with a High Load‐Carrying Capacity Enabled by Nitrogen‐Doped Graphene Quantum Dots in Lubricated Silicon‐Doped Amorphous Carbon Films [PDF]
Small StructuresAchieving macroscale superlubricity with engineering materials is highly desirable for energy conservation, environmental benefits, and longevity of mechanical components. However, attaining superlubricity in aqueous‐lubricated systems with enhanced load‐
Irfan Nadeem +6 more
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Electrostatic in-plane structural superlubric actuator [PDF]
Nature CommunicationsMicro actuators are widely used in NEMS/MEMS for control and sensing. However, most are designed with suspended beams anchored at fixed points, causing two main issues: restricted actuated stroke and movement modes, and reduced lifespan due to fatigue ...
Xuanyu Huang +6 more
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Superlubricity of dry nanocontacts
Journal of Physics: Condensed Matter, 2008 We discuss how various forms of dry superlubricity, recently observed on the nanoscale, have been interpreted by simple phenomenological models. In particular, we review the cases of static and dynamic single-contact lubricity, thermolubricity, and structural lubricity.
Gnecco, Enrico +2 more
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Superlubric Polycrystalline Graphene Interfaces [PDF]
Nature Communications, 2021 Abstract The effect of corrugated grain boundaries on the frictional properties of extended graphitic contacts incorporating a polycrystalline surface are investigated. The friction is found to be dominated by shear induced buckling and unbuckling of corrugated grain boundary dislocations, leading to a nonmonotonic behavior of friction with ...
Xiang Gao +3 more
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Macroscale Superlubricity and Polymorphism of Long-Chain n-Alcohols [PDF]
, 2021 Simple n-alcohols, such as 1-dodecanol, show anomalous film-forming and friction behaviour under elastohydrodynamic lubrication (EHL) conditions, as found inside bearings and gears.
Tom, Reddyhoff +5 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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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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The role of lubricant and carbon surface in achieving ultra- and superlow friction
, 2022 S.247-273In the presented work, tribological interactions of tetrahedral amorphous carbon (ta-C) coatings with variations of sp3 content have been systematically studied in the boundary lubrication regime with emphasis on fatty acid-based lubricants ...
Weihnacht, Volker, Makowski, Stefan
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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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