A5082831915- Diamond and Carbon-based Materials Research
- Metal and Thin Film Mechanics
- Force Microscopy Techniques and Applications
- Lubricants and Their Additives
- Semiconductor materials and devices
- Carbon Nanotubes in Composites
- Metal-Organic Frameworks: Synthesis and Applications
- Advanced materials and composites
- Tribology and Wear Analysis
- Molecular Junctions and Nanostructures
- Advanced Surface Polishing Techniques
- Perovskite Materials and Applications
- High-pressure geophysics and materials
- Covalent Organic Framework Applications
- Advanced Materials Characterization Techniques
- Catalytic Processes in Materials Science
- Surface Chemistry and Catalysis
- Advanced ceramic materials synthesis
- Magnetism in coordination complexes
- Adhesion, Friction, and Surface Interactions
- Atomic and Subatomic Physics Research
- Silicon Carbide Semiconductor Technologies
- Crystal structures of chemical compounds
- Advanced NMR Techniques and Applications
- Luminescence and Fluorescent Materials
Southwest Jiaotong University
2022-2025
Frontier Science Foundation
2025
Tohoku University
1994-2024
China National Petroleum Corporation (China)
2024
Peking University
2016-2024
Tianjin University
2023
Fujian Normal University
2023
Tsinghua University
2023
Nanjing University
2021-2022
North University of China
2019-2022
The development of highly active and stable cathodes in alkaline solutions is crucial for promoting the commercialization anion exchange membrane (AEM) electrolyzers, yet it remains a significant challenge. Herein, we synthesized atomically dispersed CoP4 moieties (CoP4–SSC) immobilized on ultrathin carbon nanosheets via phosphidation exfoliation strategy at medium temperature. thermodynamic formation process Co–P was elucidated using X-ray absorption spectroscopy (XAS) theoretical...
Triboemission of hydrocarbon molecules such as methane and ethylene induces chemical mechanical wear diamond-like carbon.
It is well-known that the electron nature of a solid in contact plays predominant role determining many properties systems, but general rules coupling govern interfacial friction remain an open issue for surface/interface community. Here, density functional theory calculations were used to investigate physical origins interfaces. was found can be inherently traced back electronic barrier change configuration joints slip due resistance energy level rearrangement leading transfer, which...
The detailed information on the surface structure and binding sites of oxide nanomaterials is crucial to understand adsorption catalytic processes thus key develop better materials for related applications. However, experimental methods reveal this remain scarce. Here we show that
Diamond-like carbon (DLC) coatings have attracted much attention as an excellent solid lubricant due to their low-friction properties. However, wear is still a problem for the durability of DLC coatings. Tensile stress on surface has important effect behavior during friction. To improve tribological properties coatings, we investigate friction process and mechanism under various tensile stresses by using our tight-binding quantum chemical molecular dynamics method. We observe formation C–C...
Abstract We report a new approach to create metal‐binding site in series of metal–organic frameworks (MOFs), where tetratopic carboxylate linker, 4′,4′′,4′′′,4′′′′‐methanetetrayltetrabiphenyl‐4‐carboxylic acid, is partially replaced by tritopic tris(4‐carboxybiphenyl)amine, combination with monotopic linkers, formic trifluoroacetic benzoic isonicotinic 4‐chlorobenzoic and 4‐nitrobenzoic respectively. The distance between these paired‐up linkers can be precisely controlled, ranging from 5.4...
Abstract Wear of contact materials results in energy loss and device failure. Conventionally, wear is described by empirical laws such as the Archard's law; however, fundamental physical chemical origins law have long been elusive, moreover do not always hold for nanoscale contact, collaboratively hindering development high‐durable tribosystems. Here, a non‐empirical robustly applicable situations proposed. The proposed successfully unveils why behaviors obey description all cases although...
Diamond like carbon (DLC) is an excellent solid lubricant coating used in various nanoscale applications such as nanoelectromechanical systems and atomic force microscopy. Reducing the wear of DLC coatings essential for improving their durability reliability. Generally, strongly dependent on working environment because tribochemical reactions with environmental gases; however, theoretical guidelines reduction by controlling environments have not been established yet mechanisms arise from...
A mechanism to achieve superlow friction in water lubrication is still the debate because accompanied by complex mechanochemical processes at sliding interfaces. Here, we experimentally demonstrate that of silicon-based ceramics achievable a self-formed double tribolayer. The outermost tribolayer can be removed from surface, but second strongly bound surface. Molecular dynamics simulations revealed was colloidal silica and hydrophilic hydrate. layer acted as lubricant reduced friction....
The definition of atomic-scale contact is a very ambiguous issue owing to the discrete atomic arrangement, which hinders development theory and nano-tribological techniques. In this work, we studied area their correlations with friction force based on three distinct definitions (interatomic distance, force, interfacial chemical bonds) by performing large-scale atomistic simulations typical ball-on-disk model. simulations, measured areas defined interatomic bonds (referred as Adist, Aforce,...
Chemical mechanical polishing (CMP) of Ga-face GaN is accelerated by the chemical reactions with OH radicals.
Because of its self-lubricating qualities, porous polyimide (PPI) has been used as a crucial cage material for space bearings; however, overcoming the failure followed by blackening PPI remains challenge. Herein, we developed surface smoothening approach to optimize tribological performance in an oil-impregnated state. Pre-polishing using sandpaper and then with Al2O3 paste enables fabrication nanoscale rough surfaces significantly reduced friction wear complete suppression phenomenon....
The prediction of standard enthalpies formation (EOFs) for larger molecules involves a trade-off between accuracy and cost, often resulting in non-negligible errors. connectivity-based hierarchy (CBH) simple bond additivity correction (BAC) are two promising means evaluating EOFs, although they cannot achieve strict chemical accuracy. Calculated errors the CBH confirmed from accumulated systematic associated with differences environments. On basis new set descriptors, our developed...