OOIR: Observatory of International Research

Papers

(The H4-Index of Friction is 33. 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 2021-09-01 to 2025-09-01.)

Article	Citations
Friction will be published monthly from 2022	180
Macro-superlubricity in sputtered MoS2-based films by decreasing edge pinning effect	150
A robust membrane with dual superlyophobicity for solving water-caused lubricant deterioration and water contamination	146
Modeling and analysis for material removal and surface roughness in fluid jet polishing of optical glass	140
Electrostatic charging at the solid–liquid interface: Strategies for liquid flow sensing	122
Status and prospects of tribology in the Republic of Korea	112
Bioinspired self-adhesive coating for surface functionalization of medical devices with lubrication and antibacterial properties	112
An overview of functional biolubricants	88
Environmental limitations of PTFE for ultralow friction composites and alternatives to using liquid lubricants	86
A new method to solve the Reynolds equation including mass-conserving cavitation by physics informed neural networks (PINNs) with both soft and hard constraints	78
Fabrication of PMMA nanocomposite biomaterials reinforced by cellulose nanocrystals extracted from rice husk for dental applications	77
Stochastic uncertain lubrication in gear transmission subjected to tribodynamic loading	77
Surfactant-free CuO nanoball-based nanolubricants: Experimental insights into dispersion stability, thermo-rheological properties and tribological behavior	73
Insights into the microstructure transformation and ultra-low tribological behavior of WS ₂ coating	63
Predicting the coefficient of friction in a sliding contact by applying machine learning to acoustic emission data	61
Probing the intriguing frictional behavior of hydrogels during alternative sliding velocity cycles	61
Electrically promoted tribological changes at diamond-like carbon/steel interface under lubrication conditions	58
Academic and industrial tribology research in India—Current status	55
Oxygen-induced contact evolution enables friction reduction in MoS ₂/Ag composite films	51
Starved lubrication analysis of angular contact ball bearing based on a multi-degree-of-freedom tribo-dynamic model	49
Dual in-situ observation of tribochemical and morphological evolution of single-layer WS2 and multi-layer WS2/C coatings	48
Characterization of ultrafine particles from hardfacing coated brake rotors	48
Monitoring of lubrication and wear in-situ by triboelectrification under grease lubrication	45
Roughness induced variation as a new mechanism for hydrodynamic lubrication between parallel surfaces	44
Effect of functional groups on tribological properties of lubricants and mechanism investigation	44

Carbon-based solid lubricants: An overview	43
Modelling acoustic emission generated by microslip friction between bolted joint interfaces	43
Effect of superficial collagen fibre orientation of articular cartilage on its anisotropic tribological behaviour	39
Large-scale fabrication of decoupling coatings with promising robustness and superhydrophobicity for antifouling, drag reduction, and organic photodegradation	38
Dynamic friction torque modelling and experimental study of ball screw actuators under high frequency reciprocating motion	37
Experimental investigation of drag reduction induced by hydrogels crosslinked with Fe ³⁺ in water-soluble and -insoluble liquid oils	36
Unlocking wear resistance in an ultrastrong dual-phase high-entropy alloy by interface-constrained deformation of brittle Laves phases	35
Ultralow friction PTFE/PEEK heterolayer: A new solid lubrication approach toward simplicity	34