Finding the Materials Harder than Diamond: Macroscale and Microscale Studies

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Finding the Materials Harder than Diamond: Macroscale and Microscale Studies

ACS Applied Materials & Interfaces. 2025. Vol. 17. No. 22. P. 33108 – 33120.

Сысоэв, Э., Bashirov I., Sychov M., Bekmansurov D., Medvedev M., Носоновскы, М., Skorb E.

Impact of heat treatment on microstructure and mechanical properties of additively manufactured aluminum bronze

Filippova A. V., Yurchenko N. Y., Smirnov S. A. et al., Journal of Alloys and Compounds 2026 No. 1074 Article 189162

This study investigates the effects of post-processing heat treatment at 300–500 °C on the microstructure, hardness, and tensile properties of laser powder bed fusion (PBF-LB) processed Al-bronze processed with energy densities (ED) in the range of 125–938 J/mm3. In the as-printed state, sharp needle-like α + β′ laths form at lower ED whereas with increasing ED, the β′ ...

Added: June 12, 2026

Isotactic copolymerization of but-1-ene with polar vinyl monomers: the effect of ω-alken-1-ol comonomer content on phase behavior, melt rheology, mechanical and adhesive properties of functionalized poly(but-1-ene)s

Садртдинова Г. И., Vinogradov A., Nifantiev I. et al., Polymer 2025 Vol. 339 Article 129133

Isotactic copolymerization of but-1-ene with bio-based undec-10-en-1-ol (M1), dec-9-en-1-ol (M2) and their silyl esters (M3–M5), catalyzed by C1-symmetric ansa-heterocene [Me2Si(η5-2,4,7-trimethelinden-1-yl)(η5-2,5-dimethyl-7H-cyclopenta[1,2-b:4,3-b']dithiophen-7-yl)]ZrCl2 (Zr1), activated by iBu3Al and MMAO-12, was explored for the first time. At [AlMMAO]/[Zr1] = 40 and [Monomer]/[Zr1] = 5,000, iBu2Al-protected ω-alken-1-ols have demonstrated highest activities and up to 16.7 mol% degrees of the comonomer incorporation with a formation of ...

Added: May 12, 2026

Accelerated Testing of the Stability of the Properties of Surgical Suture Materials Based on Biodegradable and Nonbiodegradable Polymers

Zhavoronok E. S., Lenkova K. A., Matrenina A. V. et al., Protection of Metals and Physical Chemistry of Surfaces 2025 Vol. 61 No. 5 P. 1231–1238

This study investigated two groups of surgical suture materials—nonabsorbable (polyethylene terephthalate, polyamide, and silk) and absorbable (glycolic/lactic acid copolymer)—before and after accelerated aging. The analysis employed tensile strength testing, Fourier-transform infrared (FTIR) spectroscopy, and differential scanning calorimetry (DSC). Following domestic and international standards for polymer aging, the samples were subjected to the following initial accelerated aging ...

Added: February 19, 2026

Thioglycidyl Methacrylate-Based Reactive Polyalkylene Sulfide Resin as an Alternative Substrate for the Reaction with Elemental Sulfur: Peculiarities of Synthesis, Thermodynamic and Mechanical Properties of Sulfur-Rich Plastics with High Adhesive Tensile Strength and Chemical Resistance

Rumyantsev M. S., Kalagaev I. Y., I. N. Senchikhin, Macromolecules 2025 Vol. 58 No. 5 P. 2574–2588

The search for chemical and technological solutions to process cheap and available elemental sulfur to produce valuable multifunctional materials is one of the current challenging tasks. Instead of extensively used low-molecular-weight monomers, we proposed to use the original reactive polyalkylene sulfide resin as an alternative reagent containing pendant methacrylic groups. The use of a reactive ...

Added: February 19, 2026

The coronavirus spike HR2 domain: an obscure player entering the limelight during membrane fusion?

Aliper E. T., Efremov R., Biochimica et Biophysica Acta - Biomembranes 2025 Vol. 1867 No. 8 Article 184445

The coronavirus spike protein, the key entity effectuating membrane fusion, cannot exist without membraneactive fragments. In addition to fusion peptides, among such domains are HR1 and HR2. Crucial to the spike’s refolding and membrane fusion, they are believed to both interact with each other and bind to the membranes that are merged. To elucidate HR2’s precise role in ...

Added: October 12, 2025

The Impact of Molecular Weight on the Characteristics of Injection-Molded Partially Crystalline Thermoplastic Polyimide R-BAPB

Gleb Vaganov, Didenko A., Popova E. et al., Polymer Engineering and Science 2025 Vol. 65 No. 8 P. 4314–4322

This study investigates the correlation between the molecular weight of semicrystalline polyimide and the properties of injec-tion moldings based on it. It was found that the degree of crystallinity can be increased by annealing of molding. The molecularweight of polyimide materials directly influences their glass transition temperature. An increase in molecular weight leads toa decrease ...

Added: September 15, 2025

A Review on High-Entropy Alloys Coatings Fabricated by Electrodeposition: The Correlation Between Composition, Properties and Processing Parameters

Nechvoglod O., Ostovari Moghaddam A., Pratskova S. et al., The Minerals, Metals & Materials Society 2025 Vol. 77 P. 1005–1028

This work provides an overview on the fabrication process, composition and properties of high-entropy alloy (HEA) coatings fabricated by electrodeposition. Special attention is paid to the effect of electrodeposition parameters and electrolyte composition on the microstructure, morphology, and mechanical/functional properties of the HEA coatings. It is demonstrated that the majority of researches has been focused ...

Added: June 10, 2025

Improving strength-ductility synergy of nano/ultrafine-structured Al/Brass composite by cross accumulative roll bonding process

Naseri M., Reihanian M., Ostovari Moghaddam A. et al., Journal of Materials Research and Technology 2023 Vol. 26 P. 6794–6806

Increasing the strength of metallic multilayered composites fabricated through accumulative roll bonding (ARB) is typically accompanied by a sacrifice in ductility. In the current work, we propose a strategy to achieve microstructural refinement and outstanding strength-ductility synergy in Al/Brass composites. Here, the aluminum matrix exhibits a bimodal grain distribution, consisting of fine equiaxed grains with ...

Added: February 18, 2025

Semi-ordered high entropy materials: The case of high entropy intermetallic compounds

Ostovari Moghaddam A., Fereidonnejad R., Cabot A., Journal of Alloys and Compounds 2023 Vol. 960 Article 170802

Intermetallic compounds (ICs) have been actively investigated since the early twentieth century due to their high strength, especially at high temperatures, as well as a variety of other complex features. However, lack of ductility at ambient temperature has continually hampered their practical applications. In recent years, the concept of entropy stabilization in multicomponent materials or ...

Added: February 18, 2025

Enhancing the mechanical properties of high-entropy alloys through severe plastic deformation: A review

Naseri M., Ahmad Ostovari Moghadam, Anandkumar M. et al., JOURNAL OF ALLOYS AND METALLURGICAL SYSTEMS 2024 Vol. 5 Article 100054

High-entropy alloys (HEAs) are one of the breakthroughs in the past decade in alloy development that have the potential to exhibit outstanding physical, mechanical, and chemical properties. This allows HEAs to be highly versatile materials for use in a variety of applications. Through reasonable composition design and post-manufacturing processes, HEAs can show superior properties compared ...

Added: January 23, 2025

Insights into the Mechanical Properties and Correlation Between Strain Path and Crystallographic Texture of the AA2024 Alloy During Severe Plastic Deformation

Naseri M., Reihanian M., Ahmad Ostovari Moghaddam et al., Metals and Materials International 2024 Vol. 30 P. 412–424

This study examined mechanical properties of AA2024 alloy and its correlation between strain path and crystallographic texture. Accumulative roll bonding (ARB) and cross accumulative roll bonding (CARB) were used to severely deform AA2024 alloys. Electron backscatter diffraction (EBSD) studies demonstrated that nano/ultrafine grains were formed by the strain routes after eight cycles. It was also ...

Added: January 23, 2025

Upgrading the strength-ductility trade-off and wear resistance of Al0.25CoCrFeNiCu and Al0.45CoCrFeNiSi0.45 high-entropy alloys through severe cold rolling process

Naseri M., Ahmad Ostovari Moghaddam, Shaburova N. et al., Materials Today Communications 2024 Vol. 38 Article 108036

In the present work, Al0.25CoCrFeNiCu and Al0.45CoCrFeNiSi0.45 high entropy alloys (HEAs) were fabricated by induction melting and then subjected to severe cold rolling (SCR) to induce an ultrafine lamellar microstructure. By using electron back scattered diffraction (EBSD) analysis, the microstructural features of the SCR processed HEAs were determined to be deformation bands, severely pancaked grains, and a refined lamellar microstructure. The ...

Added: January 23, 2025

Embracing entropy in glass-ceramics

Ahmad Ostovari Moghaddam, Fereidonnejad R., Shaburova N. et al., Ceramics International 2024 Vol. 50 No. 17, Part A P. 29178–29184

Glass-ceramics have extensive industrial applications owing to their superior mechanical, optical and physicochemical properties compared to either glasses or ceramics. Herein, we leverage the concept of high entropy materials to broaden the available chemical compositions for tailoring the properties of glass-ceramics. Among various compositions explored, the high entropy glass 45SiO2-20Al2O3-15MgO-11Li2O-1.5TiO2-1.5ZrO2-2P2O5-2BaO-SnO2-CaO was identified as particularly promising, ...

Added: January 23, 2025

Nanoscale lipid domains determine the dynamic molecular portraits of mixed DOPC/DOPS bilayers in a fluid phase: a computational insight

Veretenenko I. I., Trofimov Y. A., Krylov N. A. et al., Biochimica et Biophysica Acta - Biomembranes 2024 Vol. 1866 No. 7 Article 184376

Lateral heterogeneity, or mosaicity, is a fundamental property inherent to cell membranes that is crucial for their functioning. While microscopic inhomogeneities (e.g. rafts) are easily detected experimentally, lipid domains with nanoscale dimensions (nanoclusters of nanodomains, NDs) resist reliable characterization by instrumental methods. In such a case, important insight can be gained via computer modeling. Here, ...

Added: September 19, 2024

The study of peculiarities of parabens solvation in methanol- and acetone-modified supercritical carbon dioxide by computer simulation

Odintsova E., Journal of Supercritical Fluids 2017 Vol. 126 P. 47–54

Added: August 29, 2024

Molecular dynamics simulation of the solvated environment of 18-crown-6 ether in methanol-acetonitrile mixed solvents

Odintsova E., Journal of Molecular Liquids 2021 Vol. 325 P. 115191–0

Added: August 29, 2024

Molecular origin of structural defects in the zinc phthalocyanine film

Odintsova E., Physical Chemistry Chemical Physics 2022 Vol. 24 No. 33 P. 19956–19964

Added: August 29, 2024

Structure of aqueous solutions of lignin treated by sub- and supercritical water: Experiment and simulation

Odintsova E., Journal of Molecular Liquids 2023 Vol. 383 P. 122030–0

Added: August 29, 2024

МИКРОСТРУКТУРА И МЕХАНИЧЕСКИЕ СВОЙСТВА СПЛАВА СИСТЕМЫ AL–MG–FE–NI–ZR–SC ПОСЛЕ ВСЕСТОРОННЕЙ ИЗОТЕРМИЧЕСКОЙ КОВКИ

Кищик А. А., Aksenov S. A., Кищик М. С. et al., Физика металлов и металловедение 2023 Т. 124 № 6 С. 540–549

The effects of isothermal multidirectional forging (IMF) on the grain structure, second-phase particles of solidification origin, and dispersoids in the Al–4.9Mg–0.9Ni–0.9Fe–0.2Zr–0.1Sc alloy have been investigated. The strain distribution over the sample volume during forging in a closed die has been analyzed using a finite-element simulation. A method of considering the friction effect and changes in strain rate ...

Added: November 28, 2023

Insights into the Self-Assembly of Water Reverse Micelles and Solubilization Process in Liquid and Supercritical Solvents: A Molecular Dynamics Study

Darya L. Gurina, Yury A. Budkov, Colloids and Surfaces A: Physicochemical and Engineering Aspects 2023 Vol. 676 Article 132200

This article reports on a full-atomic classical molecular dynamics simulation investigating the self-assembly process of reverse micelles in carbon tetrachloride and supercritical carbon dioxide (scCO2). The study explores the impact of solvent type, surfactant structure (sodium dodecyl sulfate and sodium bis(3,5,5-trimethyl-1-hexyl) sulfosuccinate), water/surfactant ratio, and surfactant concentration on the self-assembly, size, and shape of reverse ...

Added: August 8, 2023

First-principles calculations of the viscosity in multicomponent metallic melts: Al-Cu-Ni as a test case

Kondratyuk N., Ryltsev R., Ankudinov V. et al., Journal of Molecular Liquids 2023 Vol. 380 Article 121751

Calculating viscosity in multicompoinent metallic melts is a challenging task for both classical and ab initio molecular dynamics simulations methods. The former may not to provide enough accuracy and the latter is too resources demanding. Machine learning potentials provide optimal balance between accuracy and computational efficiency and so seem very promising to solve this problem. Here we ...

Added: May 16, 2023

Electronic resonances in expanding non-neutral ultracold plasma

Bronin S. Y., Vikhrov E. V., Saakyan S. et al., Physics of Plasmas 2024 Vol. 31 No. 3 Article 033507

Calculations of the spectrum of eigen oscillations of an inhomogeneous ultracold plasma are presented both in the absence and in the presence of charge imbalance. The collective modes of these plasma oscillations are recorded in experiments as absorption resonances of a radio frequency electric field. It is shown that in the presence of friction of ...

Added: February 13, 2023

Predictive Analytics Approach for Steel Billets Quality Control System

Belov A. V., Ekaterina A. Melekhova, Vorontsova T., , in: 2022 International Conference on Quality Management, Transport and Information Security, Information Technologies (IT&QM&IS).: St. Petersburg: IEEE, 2022. P. 219–223.

The paper deals with the problem of improving the quality of metal products. Nowadays destructive methods of quality control of the steel billets prevail at metallurgical enterprises. This approach to assessing the quality of the steel billets is wasteful, which increases its cost. One of the ways to reduce the cost of production of metal ...

Added: January 28, 2023

A uniquely stable trimeric model of SARS-CoV-2 spike transmembrane domain

Aliper E. T., Krylov Nikolay A., Nolde Dmitry E. et al., International Journal of Molecular Sciences 2022 Vol. 23(16) Article 9221

Understanding fusion mechanisms employed by SARS-CoV-2 spike protein entails realistic transmembrane domain (TMD) models, while no reliable approaches towards predicting the 3D structure of transmembrane (TM) trimers exist. Here, we propose a comprehensive computational framework to model the spike TMD only based on its primary structure. We performed amino acid sequence pattern matching and compared the molecular hydrophobicity potential ...

Added: August 25, 2022