OOIR: Observatory of International Research

Papers

(The H4-Index of Friction is 39. The table below lists those papers that are above that threshold based on CrossRef citation counts [max. 250 papers]. The publications cover those that have been published in the past four years, i.e., from 2022-05-01 to 2026-05-01.)

Article	Citations
Electrostatic charging at the solid–liquid interface: Strategies for liquid flow sensing	183
Status and prospects of tribology in the Republic of Korea	146
Insights into the microstructure transformation and ultralow tribological behavior of WS ₂ coatings	146
A robust membrane with dual superlyophobicity for solving water-caused lubricant deterioration and water contamination	124
Toward lithium-free tribology: Design and performance of plant oil-based greases thickened with functionalized nanoclays	117
Probing the intriguing frictional behavior of hydrogels during alternative sliding velocity cycles	113
Bioinspired self-adhesive coating for surface functionalization of medical devices with lubrication and antibacterial properties	94
Fabrication of PMMA nanocomposite biomaterials reinforced by cellulose nanocrystals extracted from rice husk for dental applications	91
Synergistic lubrication enhancement by load-driven edge self-passivation and structural heterogeneity in graphene/MoS₂ coatings	91
Macro-superlubricity in sputtered MoS2-based films by decreasing edge pinning effect	84
Structural insights into 2D materials for tribology	80
Environmental limitations of PTFE for ultralow friction composites and alternatives to using liquid lubricants	78
Surfactant-free CuO nanoball-based nanolubricants: Experimental insights into dispersion stability, thermo-rheological properties, and tribological behavior	72
Stochastic uncertain lubrication in gear transmission subjected to tribodynamic loading	68
Modeling and analysis for material removal and surface roughness in fluid jet polishing of optical glass	67
An overview of functional biolubricants	64
A new method to solve the Reynolds equation including mass-conserving cavitation by physics informed neural networks (PINNs) with both soft and hard constraints	59
Predicting the coefficient of friction in a sliding contact by applying machine learning to acoustic emission data	58
Roughness induced variation as a new mechanism for hydrodynamic lubrication between parallel surfaces	52
Academic and industrial tribology research in India—Current status	52
Dynamic friction torque modeling and experimental study of ball screw actuators under high-frequency reciprocating motion	49
Oxygen-induced contact evolution enables friction reduction in MoS ₂ /Ag composite films	48
Starved lubrication analysis of angular contact ball bearing based on a multi-degree-of-freedom tribo-dynamic model	47
Subsurface deformation mechanism and the interplay relationship between strength-ductility and fretting wear resistance during fretting of a high-strength titanium alloy	47
Monitoring of lubrication and wear in-situ by triboelectrification under grease lubrication	47

Ultralow friction PTFE/PEEK heterolayer: A new solid lubrication approach toward simplicity	46
Carbon-based solid lubricants: An overview	45
Dual in-situ observation of tribochemical and morphological evolution of single-layer WS2 and multi-layer WS2/C coatings	44
Experimental investigation of drag reduction induced by hydrogels crosslinked with Fe ³⁺ in water-soluble and water-insoluble liquid oils	44
Large-scale fabrication of decoupling coatings with promising robustness and superhydrophobicity for antifouling, drag reduction, and organic photodegradation	44
Electrically promoted tribological changes at diamond-like carbon/steel interface under lubrication conditions	43
Mucus-inspired functionalized ionic liquid/carnauba wax composite polyurethane with friction-driven underwater multi-lubrication	42
Effect of superficial collagen fibre orientation of articular cartilage on its anisotropic tribological behaviour	42
Unlocking wear resistance in an ultrastrong dual-phase high-entropy alloy by interface-constrained deformation of brittle Laves phases	42
Modelling acoustic emission generated by microslip friction between bolted joint interfaces	41
Effect of functional groups on tribological properties of lubricants and mechanism investigation	41
Electron transfer dominated triboelectrification at the hydrophobic/slippery substrate—water interfaces	40
In memoriam: Shizhu Wen (1932–2023)	40
Semi-analytical calculation model for friction of polymers on the example of POM ∣ PE-UHMW and steel ∣ PE-UHMW	39