Results 21 to 30 of about 18,338 (155)

Macroscale Superlubricity Enabled by the Synergy Effect of Graphene-Oxide Nanoflakes and Ethanediol

ACS Applied Materials & Interfaces, 2018
Graphene has been recognized as an excellent lubrication material owing to its two-dimensional structure and weak interlayer interactions. However, most extant works concerning superlubricity involving graphene oxide have been limited to nanoscale or microscale dimensions (of the order of 1-10 μm).
Xiangyu Ge, Jinjin Li, Rui Luo, Chenhui Zhang, Jianbin Luo   +4 more
openaire   +3 more sources

Superlubricity of Materials: Progress, Potential, and Challenges. [PDF]

Materials (Basel), 2023
This review paper provides a comprehensive overview of the phenomenon of superlubricity, its associated material characteristics, and its potential applications.
Ramezani M, Ripin ZM, Jiang CP, Pasang T.   +3 more
europepmc   +2 more sources

Macroscale Superlubricity: Macroscale Superlubricity Enabled by Graphene‐Coated Surfaces (Adv. Sci. 4/2020) [PDF]

Advanced science, 2020
In article number https://doi.org/10.1002/advs.201903239, Zhenyu Zhang, Suzhi Li, and co‐workers realize macroscale superlubricity on macroscale surfaces under ambient conditions, using a tribological system: a graphene coated ball, graphene coated microspheres and a graphene coated plate.
Zhang Z, Du Y, Huang S, Meng F, Chen L, Xie W, Chang K, Zhang C, Lu Y, Lin C, Li S, Parkin I, Guo D.   +12 more
europepmc   +4 more sources

2D Nanomaterials Toward Function-Ready Superlubricity in Advanced Microsystems. [PDF]

Adv Mater
A unified framework links structural and transformation superlubricity with microsystem functions and deployment requirements. Mechanisms, device architectures, integration strategies, AI‐guided discovery, and benchmarking protocols are connected to define function‐ready superlubricity in advanced microsystems.
Geng Y, Yang J, Yang Y.
europepmc   +2 more sources

Shear-Induced Emergence of Aromatic Superlow-Friction Interfaces in Amorphous Carbon: Triggering Chemical Impurities and Atomic-Scale Mechanisms. [PDF]

Adv Sci (Weinh)
High‐throughput quantum‐mechanical simulations reveal that amorphous carbon undergoes shear‐driven structural transformation into aromatic, graphene‐like interfaces. This mechanochemical process is governed by dopant chemistry: dopants with valency less than four promote the emergence of superlow‐friction amorphous graphene, whereas tetra‐valent ...
Kuwahara T, Horiguchi K, Mayrhofer L, Moras G, Moseler M.   +4 more
europepmc   +2 more sources

Unravelling friction anisotropy by atomic force microscopy. [PDF]

J Microsc
Abstract Friction plays a crucial role in both natural phenomena, from the flow of blood cells to earthquakes, and technological applications, from car engines to wind turbines. One of the most fundamental aspects of tribology is friction anisotropy, that is, the dependence of the friction force vector on the direction of sliding.
Cafolla C, Campione M.
europepmc   +2 more sources

Liquid Superlubricity Enabled by the Synergy Effect of Graphene Oxide and Lithium Salts. [PDF]

Materials (Basel), 2022
In this study, graphene oxide (GO) nanoflakes and lithium salt (LiPF(6)) were utilized as lubrication additives in ether bond−containing dihydric alcohol aqueous solutions (DA(aq)) to improve lubrication performances.
Ge X, Chai Z, Shi Q, Liu Y, Tang J, Wang W.   +5 more
europepmc   +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

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