Results 11 to 20 of about 203 (124)

Macroscale Superlubricity Achieved With Various Liquid Molecules: A Review [PDF]

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
doaj   +2 more sources

Tunable macroscale structural superlubricity in two-layer graphene via strain engineering [PDF]

Nature Communications, 2020
Superlubricity in macro-scale graphitic samples is hampered by commensurate stacking domains that prevent facile sliding between adjacent graphene layers.
Charalampos Androulidakis, Emmanuel N. Koukaras, George Paterakis, George Trakakis, Costas Galiotis   +4 more
doaj   +2 more sources

Macro-superlubricity in sputtered MoS2-based films by decreasing edge pinning effect

Friction, 2023
To date, MoS2 can only be achieved at microscale. Edge pinning effect caused by structure defects is the most obvious barrier to expand the size of structural superlubricity to macroscale.
Chunmeng Dong, Dong Jiang, Yanlong Fu, Desheng Wang, Qinqin Wang, Lijun Weng, Ming Hu, Xiaoming Gao, Jiayi Sun   +8 more
doaj   +2 more sources

Microscale Contact Electrification with Unprecedented High Intrinsic Charge Density. [PDF]

Small
With the atomically flat contact interface by a microscale graphite slider and polytetrafluoroethylene, microscale contact electrification with high contact efficiency is achieved. The developed microscale triboelectric nanogenerator exhibits a record‐high intrinsic triboelectric charge density of 2.6 mC m−2, which is attributed to the greatly enhanced
Chen C, Nie J, An J, Xia X, Wu Z, Wang H, Cui H, Zheng Q, Zi Y.   +8 more
europepmc   +2 more sources

Achieving superlubricity with 2D transition metal carbides (MXenes) and MXene/graphene coatings

Materials Today Advances, 2021
Two-dimensional (2D) materials have demonstrated unique friction and antiwear properties unmatched by their bulk (3D) counterparts. A relatively new, large and quickly growing family of two-dimensional early transition metal carbides and nitrides (MXenes)
S. Huang, K.C. Mutyala, A.V. Sumant, V.N. Mochalin   +3 more
doaj   +3 more sources

Liquid superlubricity of lubricants containing hydroxyl groups and their aqueous solution under rolling/sliding conditions

Friction, 2023
Macroscale rolling/sliding conditions are in the superlubricity, a little-studied topic so far. The purpose of this paper is to examine the formation of elastohydrodynamic lubrication (EHL) films by water-based lubricants (glycerol and polyethylene ...
Tomáš Poláček, Petr Šperka, Ivan Křupka   +2 more
doaj   +2 more sources

Electrically Tunable Friction: From Sticky to Slippery with Ionic Hydrogels. [PDF]

Adv Mater
This 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, Yao Y, Wang Y, Zhou Q, Zhao Z, Qiao C, Sun Y, Meng Y, Tian Y, Zeng H.   +9 more
europepmc   +2 more sources

Unraveling the Interfacial Properties of Twisted Single-Crystal Au(111)/MoS₂ Heterostructures: A Pathway to Robust Superlubricity. [PDF]

Adv Sci (Weinh)
Interfacial mechanical properties of MoS2/Au(111) heterostructures are revealed by advanced experimental and computational methods. The developed semi‐anisotropic interlayer potential (SAIP) accurately predicts moiré‐driven out‐of‐plane corrugation, aligning with experimental observations.
Yao Y, Song Y, Wu B, Scherb S, Huang S, Hinaut A, Glatzel T, Meyer E, Liu Z, Ouyang W.   +9 more
europepmc   +2 more sources

The Promise of Solid Lubricants for a Sustainable Future. [PDF]

Adv Mater
Lubricants are vital for technology, saving energy and resources. The industry seeks sustainable solutions beyond fossil fuels. Solid lubricants offer extremely low friction and reduce environmental impact, especially in harsh conditions. Can these solids truly replace liquid lubricants, or are they limited to extreme applications?
Grützmacher PG, Voevodin AA, Korényi-Both A, Righi MC, DellaCorte C, Bagcivan N, Erdemir A, Gachot C.   +7 more
europepmc   +2 more sources

Combination of diketone and PAO to achieve macroscale oil-based superlubricity at relative high contact pressures

Friction
1-(4-ethylphenyl)-nonane-1,3-dione (0206) is an oil-soluble liquid molecule with rod-like structure. In this study, the chelate (0206-Fe) with octahedral structure was prepared by the reaction of ferric chloride and 1,3-diketone. The experimental results
Shaonan Du, Chenhui Zhang, Zhi Luo
doaj   +2 more sources