We can't find the internet
Attempting to reconnect
Something went wrong!
Hang in there while we get back on track
Papers
61,005 resultsShowing papers similar to Frictional shear stress of ZnO nanowires on natural and pyrolytic graphite substrates
ClearMultiscale Modeling of Friction Coefficients: A Review from Nanocontacts to Macroscopic Sliding
This review examines multiscale modeling approaches for friction coefficients from atomic nanocontacts to macroscopic sliding behavior, finding that classical Coulomb and Amontons laws underrepresent the complexity of friction phenomena revealed by modern computational and experimental research.
Nanoscale adhesion and friction behavior of individual nanoplastic particles under varying environmental conditions
Researchers used atomic force microscopy with individual nanoplastic particles attached to the probe tip to measure adhesion and friction at the nanoscale on different surfaces. The study found that adhesion and friction varied significantly depending on the substrate type and environmental conditions such as humidity and aqueous versus dry settings. Mechanically degraded nanoplastics showed slightly different adhesion and friction compared to pristine particles, indicating that environmental weathering alters how nanoplastics interact with surfaces.
Modification of Frictional Surfaces of Bearings by Addition of Nanoparticle Compositions to Lubricants
Researchers studied the effects of nanoparticle additive compositions in lubricating oils on changes to the frictional surface structure and tribological characteristics of a steel-to-steel friction pair, using scanning electron microscopy to analyze surfaces after step-loading fatigue tests.
Engineering Various Morphologies of 2 Dimensional Nanomaterials for Enhanced Nanolubricant Efficiency: A Review
This review examines how two-dimensional nanomaterials of various morphologies—sheets, ribbons, and quantum dots—can be used as lubricant additives to reduce friction and wear, with implications for designing nanomaterial-based systems that minimize environmental release of engineered particles.
Theoretical Study of the Friction Coefficient in the M-B Model
This paper derived new mathematical expressions for friction coefficients in a fractal-based surface contact model, addressing how microscopic surface roughness affects macroscopic friction behavior. The model improves predictions of friction for engineering applications where surface texture matters. Better friction models contribute to more durable and efficient mechanical systems.
Probing Friction and Adhesion of Individual Nanoplastic Particles
Using atomic force microscopy, researchers directly measured the friction and adhesion properties of individual nanoplastic particles on surfaces. These physical measurements provide insights into how nanoplastics interact with biological surfaces, which is relevant to understanding how they penetrate cells and tissues.
Raman Spectroscopy Unfolds the Fate and Transformation of SWCNTs after Abrasive Wear of Epoxy Floor Coatings
Single-walled carbon nanotubes (SWCNTs) embedded in epoxy floor coatings were subjected to accelerated mechanical aging using a pin-on-disk tribometer to assess release during abrasive wear. Raman spectroscopy tracked the fate and structural transformation of SWCNTs in abraded material and debris, informing nanomaterial release risk assessment.
Investigation of Nano-Mechanical and- Tribological Properties of Hydrogenated Diamond Like Carbon (DLC) Coatings
This materials science paper investigated the nano-mechanical and tribological properties of hydrogenated diamond-like carbon films. It is a coatings engineering study unrelated to environmental microplastics or human health.
Effect of Nanoparticles and Their Anisometry on Adhesion and Strength in Hybrid Carbon-Fiber-Reinforced Epoxy Nanocomposites
A new electrochemical method was developed to measure fiber-matrix adhesion in carbon-fiber-reinforced polymer composites using electrical conductivity, and nano-diamond additions at 0.1% mass fraction were found most effective, increasing fiber-matrix adhesion 2.5 times and tensile strength 17%.
Nanoindentation tests on diamond-machined silicon wafers
This precision manufacturing study used nanoindentation to examine how diamond-turning creates an amorphous surface layer on silicon wafers, finding this layer has different mechanical properties than pristine silicon. This is a semiconductor manufacturing study with no relevance to environmental microplastics.
Investigation of the Lubrication Performance of γ-Al2O3/ZnO Hybrid Nanofluids for Titanium Alloy
This engineering study found that hybrid nanofluids combining aluminum oxide and zinc oxide nanoparticles provided better lubrication than single-metal nanofluids when machining titanium alloys. The optimal 2:1 ratio of Al2O3 to ZnO reduced friction by up to 22% compared to a base solution.
Direct Correlations among the Grain Size, Texture, and Indentation Behavior of Nanocrystalline Nickel Coatings
Researchers studied how grain size affects the mechanical properties of nanocrystalline nickel coatings. This materials science paper is unrelated to environmental microplastics.
Experimental and Numerical Investigation on the Effect of Scratch Direction on Material Removal and Friction Characteristic in BK7 Scratching
This materials science study examined how the direction of nanoscratching affects crack formation and material removal in optical glass. The research is focused on precision manufacturing and has no direct relevance to microplastics or environmental health.
On the Formation and Characterization of Nanoplastics During Surface Wear Processes
Researchers characterized nanoplastic particle generation during surface wear processes, finding that mechanical abrasion of bulk plastic materials produces a broad size distribution of particles including sub-100 nm fragments, with surface wear rate depending on polymer hardness and contact conditions.
Nanoplastic in aqueous environments: The role of chemo-electric properties for nanoplastic-mineral interaction
Researchers studied how nanoplastics — plastic particles smaller than 1 micrometer — stick to common soil minerals underground, finding that simple electrical repulsion is less important than chemical bonding, metal ion bridging, and hydrogen bonds. Understanding these interactions is key to predicting how nanoplastics move through soil and contaminate groundwater.
Dynamic Processes of Substructural Rearrangement under Friction of Carbon Steel
This study examined how heat treatment affects the friction and wear properties of medium carbon steel, linking material microstructure to tribological performance. The research is focused on materials engineering with limited direct relevance to microplastic pollution or human health.
A Comparative Study of Particle Size Distribution of Graphene Nanosheets Synthesized by an Ultrasound-Assisted Method
Researchers developed graphene nanosheets (GNS) from commercial micrographite via an ultrasound-assisted exfoliation method, characterizing the resulting materials with XRD, TEM, Raman spectroscopy, and XPS. The study found that sonochemical exfoliation produces low-defect graphene materials with particle size distributions suitable for industrial applications.
Quantifying Mechanical Abrasion of MWCNT Nanocomposites Used in 3D Printing: Influence of CNT Content on Abrasion Products and Rate of Microplastic Production
Researchers quantified microplastic particle and carbon nanotube release during mechanical abrasion of 3D-printed multiwalled carbon nanotube nanocomposites, finding that abrasion rate and particle characteristics depended strongly on CNT content, raising concerns about nanomaterial release from consumer products.