jablonkagroup/rise_ai_scientists huggingface dataset:
Authors: Kingsley Imoni-Ogbe | Onyekachukwu M.O. | V.A. Oshevwiyo | Ekpekpo, A. | O. Oscar | Arigbede, J.
Source: Nigerian Journal of Pure and Applied Sciences (article, 2025-05-04)
Field: Materials Science — Materials Chemistry

Fabrication of Aluminium-Doped Zinc Oxide (AZO) Thin Films Using Nitrogen as a Carrier Gas in Aerosol-Assisted Chemical Vapour Deposition (AACVD) This study investigated the fabrication of Aluminium-doped Zinc Oxide (AZO) thin films via Aerosol-assisted Chemical Vapour Deposition (AACVD) technology using Nitrogen as the carrier gas, with their structural, optical, and morphological properties examined across different Aluminium-doping levels, ranging from 0% to 20%. The deposition process was carried out at a temperature of 400°C, which was proceeded by annealing at a temperature of 450°C in a Nitrogen environment. The X-ray Diffraction (XRD) analysis confirmed a high crystallinity with strong peak signals at (100), (110), (200) and (222) planes. An increase in Aluminium-doping level led to smaller crystallites and higher dislocation densities due to enhanced lattice strains and structural defects. UV absorbance analysis revealed higher peak intensities, especially in samples with 5% or lower doping. The ZnO bandgap energy increased from 3.36 eV in pristine ZnO to 3.78 eV at 20% Al doping, influenced by the Burstein–Moss effect. A broadened optical activity range was observed at doping levels above 15%, enhancing the films’ potential for optoelectronic applications. The usage of Nitrogen carrier gas led to higher dislocation densities and slight increases in film thickness. With a tuned optical bandgap and high transparency at specific doping levels, these AZO films are well-suited for transparent conductive oxide (TCO) applications, including solar cells, display technologies, and smart windows. Chemical vapor deposition ; Fabrication ; Materials science ; Aluminium ; Zinc ; Doping ; Nitrogen ; Inorganic chemistry ; Thin film ; Deposition (geology) ; Chemistry ; Nanotechnology ; Metallurgy ; Optoelectronics ; Organic chemistry ZnO doping and properties ; Gas Sensing Nanomaterials and Sensors ; Copper-based nanomaterials and applications
Authors: Mansi Mistry | Subhosh Turumella | Vimalkumar Prajapati | Bharatkumar Z. Dholakiya
Source: Journal of Applied Polymer Science (article, 2025-12-18)
Field: Materials Science — Polymers and Plastics

High‐Performance Oil–Water Separation Using an Additive‐Free, Hemp Seed Oil‐Based Inherently Hydrophobic Polyurethane Foam ABSTRACT This study reports the synthesis of an inherently hydrophobic, bio‐based polyurethane foam (Bio‐HPUF) derived from hemp seed oil (HSO) for efficient oil–water separation. Unlike conventional polyurethane foams, Bio‐HPUF was synthesized without solvents, blowing agents, or catalysts, using HSO‐derived polyol and hexamethylene diisocyanate (HDI). Structural characterization via FTIR confirmed successful urethane formation, while SEM revealed an open‐cell porous morphology with pore sizes ranging from 163–567 m. Thermal analysis showed multi‐stage degradation with stability up to 330°C. The foam exhibited a water contact angle of 91° and an oil contact angle of 16°, indicating hydrophobic and oleophilic behavior. It demonstrated selective sorption capacities up to 1–27.8 g/g for oils and organic solvents, rapid oil uptake within 15 s, and high selectivity in water. Reusability studies showed minimal loss in performance over 10 oil adsorption–desorption cycles. The foam also maintained 99% of its original mass after 24 h exposure to acidic, saline, and basic media, with no structural degradation. Notably, Bio‐HPUF effectively separated toluene‐in‐water emulsion, showed excellent compression recovery with self cleaning abilities, affirming its applicability in complex systems. These results highlight the material's sustainable synthesis, structural robustness, and high selectivity, positioning it as a promising sorbent for environmental oil remediation. Polyurethane ; Contact angle ; Sorbent ; Isophorone diisocyanate ; Polyol ; Thermal stability ; Sorption ; Fourier transform infrared spectroscopy Polymer composites and self-healing ; Surface Modification and Superhydrophobicity ; Solar-Powered Water Purification Methods
Authors: Yuya Suzuki | Mami Nosaka | Kazutaka Nakada | Kazuyoshi Yoneda
Source: IMAPSource Proceedings (article, 2025-02-07)
Field: Materials Science — Electronic, Optical and Magnetic Materials

Ultra-low Loss Build-up Film Dielectric for Advanced Packaging This paper introduces a novel low-loss film dielectric material and describes the performance of the material. As the demand for faster, smaller, and more energy-efficient electronic devices continues to surge, the IC substrates must have the capability of meeting the stringent requirements, especially to support high speed signal transmissions. As the signal frequencies increase, the importance of reducing dielectric loss is getting more critical in enhancing the performance of IC substrates. However, achieving ultra-low loss characteristics in build-up dielectric materials remains a formidable technical challenge, hindered by the inherent limitations of traditional epoxy-based materials. This paper introduces a novel build-up dielectric material that addresses the technical limitation of the conventional materials. Leveraging advanced material design and process technology, the new dielectric film material offers ultra-low electrical loss characteristics with robust reliability performance and standard manufacturing processes compatibility. The unique material design bestows extremely stable electrical performance at higher temperatures. Signal transmission measurement demonstrated that the new material exhibited approximately 40% lower transmission loss compared to the conventional material. The superior characteristics make the dielectric material ideal for advanced packaging in high performance computing, telecommunications, and evolving automotive applications. Materials science ; Dielectric ; Engineering physics ; Dielectric loss ; Composite material ; Optoelectronics ; Engineering Copper Interconnects and Reliability ; 3D IC and TSV technologies ; Synthesis and properties of polymers
Authors: Martín Fernández-Pascual | Alexandre Brethomé | Mireia Sidera | Stephen P. Fletcher
Source: Chem Catalysis (article, 2025-08-19)
Field: Chemistry — Inorganic Chemistry

Divergent contiguous stereocenters via asymmetric conjugate additions to cycloalkenyl ketones First divergent Cu-catalyzed asymmetric addition to cyclohexenone ketones High yields and selectivities across 20+ diverse substrates Stereocenter ; Conjugate ; Chemistry ; Stereochemistry ; Enantioselective synthesis ; Mathematics ; Catalysis ; Organic chemistry Asymmetric Hydrogenation and Catalysis ; Asymmetric Synthesis and Catalysis ; Chemical Synthesis and Analysis
Authors: Sofia E. Mikhtaniuk | Ekaterina V. Kukhtenko | Alexey V. Vakulyuk | Emil I. Fatullaev | Igor M. Neelov | Oleg V. Shavykin
Source: WSEAS TRANSACTIONS ON BIOLOGY AND BIOMEDICINE (article, 2025-12-02)
Field: Materials Science — Polymers and Plastics

Interaction of Ala-Glu-Asp-Leu Tetrapeptide Molecules with KRH and KHR Dendrimers in Water Previously, it was shown that a new bioactive tetrapeptide Ala-Glu-Asp-Leu (AEDL) can modulate gene expression and promote normalization of lung function. In this work, we use the molecular dynamics (MD) method to simulate the interaction of this tetrapeptide molecules with a nanocontainer based on a lysine dendrimer with arginine-histidine (RH) and histidine-arginine (HR) spacers. Since the charge of the histidine amino acid residue (His, H) in the dendrimer depends on pH, we performed MD simulations of the complexation of AEDL molecules with these two dendrimers at two different pH values. It was found that all the studied dendrimers are able to carry a large number (from 14 to 16) of AEDL molecules at both pH values. Tetrapeptides form more hydrogen bonds with dendrimers having protonated histidines (at lower pH) and penetrate them deeper compared to dendrimers with neutral histidines. This leads to an increase in the capacity of the dendrimer carrier for transferring guest molecules by approximately 8%. The obtained data can be used to select the most suitable dendrimer for delivery of the AEDL tetrapeptide. Dendrimer ; Tetrapeptide ; Molecule ; Histidine ; Protonation ; Lysine ; Hydrogen bond Dendrimers and Hyperbranched Polymers ; RNA Interference and Gene Delivery ; Supramolecular Self-Assembly in Materials
Authors: Bettina Herbig | Egzon Cermjani | Doris Hanselmann | Johannes Prieschl | Angelika Schmitt | Michael Moritz | Christian Papp | Greta Nölke | Stefano Fiore | Christoph Deckers | Thomas H. Rehm | Susanne Wintzheimer
Source: Advanced Functional Materials (article, 2025-11-20)
Field: Materials Science — Materials Chemistry

Supraparticles Composed of Graphitic Carbon Nitride Nanoparticles and Silica‐Supported Horseradish Peroxidase as Customizable Hybrid Catalysts for Photo‐Biocatalytic Cascade Reactions in Continuous Flow Abstract In green and sustainable chemistry, coupling biocatalysis and photocatalysis in cascade processes is particularly appealing. It enables reactions at ambient temperature in aqueous solutions with light as an abundant energy source. Additionally, it merges the high reactivity of photocatalysts with the unique selectivity of biocatalysts. However, such cascade processes, especially when conducted in one‐pot mode, pose the challenges of mutual catalyst deactivation and opposite optimal conditions for each catalytic step. In this work, the design of hybrid supraparticles consisting of the nanoparticular photocatalyst graphitic carbon nitride and the enzyme horseradish peroxidase immobilized on silica nanoparticles is proposed. A compatibility range where both catalysts can coexist within the hybrid supraparticles and function effectively, both in one‐pot batch and continuous flow processes, is identified using the photocatalytic hydrogen peroxide production and the enzymatic 3,3′,5,5′‐tetramethylbenzidine conversion as a model cascade reaction. Graphitic carbon nitride ; Catalysis ; Photocatalysis ; Horseradish peroxidase ; Nanoparticle ; Hydrogen peroxide ; Carbon nitride ; Aqueous solution Advanced Nanomaterials in Catalysis ; Enzyme Catalysis and Immobilization ; Enzyme-mediated dye degradation
Authors: Negar Heidari | Parviz Norouzi | Alireza Badiei | Ebrahim Ghafar‐Zadeh
Source: Actuators (article, 2025-09-16)
Field: Materials Science — Electronic, Optical and Magnetic Materials

Fast Fourier Transform-Based Activation and Monitoring of Micro-Supercapacitors: Enabling Energy-Autonomous Actuators This work provides the first demonstration of FFTCCV as a dual-purpose method, serving both as a real-time diagnostic tool and as a phase- and morphology-engineering strategy. By adjusting the scan rate, FFTCCV directs the crystallographic evolution of Ni (OH)2 on Ni foam—stabilizing α-nanoflakes at 0.7 V·s−1 and β-platelets at 0.007 V·s−1—while simultaneously enabling electrode-resolved ΔQ tracking and predictive state-of-health (SoH) monitoring. This approach enabled the precise regulation of electrode morphology and phase composition, yielding high areal capacitance (546.5 mF·cm−2 at 5 mA·cm−2) with ~75% retention after 3000 cycles. These improvements advance the development of high-performance micro-supercapacitors, facilitating their integration into wearable and miniaturized devices where compact and durable energy storage is required. Beyond performance enhancement, FFTCCV also enabled continuous monitoring of capacitance during extended operation (up to 40,000 s). By recording both anodic and cathodic responses, the method provided time-resolved insights into device stability and revealed characteristic signatures of electrode degradation, phase transitions, and morphological changes. Such detection allows recognition of early failure pathways that are not accessible through conventional testing. This monitoring capability functions as an embedded health sensor, offering a pathway for predictive diagnosis of supercapacitor failure. Such functionality is particularly important for energy-driven actuators and smart materials, where uninterrupted operation and preventive maintenance are critical. FFTCCV therefore provides a scalable strategy for developing energy-autonomous microsystems with improved performance and real-time state-of-health monitoring. Actuator ; Capacitance ; Microsystem ; Wearable computer ; Supercapacitor ; Scalability ; Electrode ; Wearable technology ; Anode Supercapacitor Materials and Fabrication ; Advanced Sensor and Energy Harvesting Materials ; Transition Metal Oxide Nanomaterials
Authors: Abubakar M. Hammari | Usman Dadum Hamza | M. Y. Ibrahim | Kabir Garba | Idris Misau Muhammad
Source: Mikailalsys Journal of Advanced Engineering International (article, 2025-05-27)
Field: Chemistry — Organic Chemistry

Effective Treatment of Pharmaceutical Waste Water Through Adsorption Using Sugarcane Bagasse Derived Cellulose Nanocrystal as an Innovative Adsorbent This study investigates the production of cellulose nanocrystals (CNCs) from sugarcane bagasse and evaluates their adsorption performance for the removal of metronidazole (MNZ) from aqueous solutions. CNCs were synthesized through acid hydrolysis and characterized for use as an adsorbent. Batch adsorption experiments were conducted to assess the interaction between MNZ and CNCs under varying conditions. Equilibrium data were analyzed using Langmuir and Freundlich isotherm models, with the Freundlich model demonstrating a superior fit (R² = 0.8818), indicating multilayer adsorption on a heterogeneous surface. Kinetic modeling revealed that the adsorption process followed a pseudo-second-order model (R² = 0.9972), suggesting that chemisorption is the dominant mechanism. Thermodynamic parameters, including Gibbs free energy (ΔG), enthalpy (ΔH), and entropy (ΔS), were calculated to understand the nature of the adsorption. Negative ΔG values at all examined temperatures confirmed the spontaneous nature of the process, while positive ΔH values indicated that adsorption was endothermic and favored at elevated temperatures. The results collectively demonstrate that sugarcane bagasse-derived CNCs exhibit promising adsorption capabilities for MNZ, combining favorable kinetics, thermodynamics, and equilibrium behavior. This work underscores the potential of agricultural waste valorization for the development of cost-effective and sustainable adsorbents for pharmaceutical pollutant removal in water treatment applications. Bagasse ; Adsorption ; Cellulose ; Nanocrystal ; Materials science ; Pulp and paper industry ; Chemical engineering ; Waste management ; Chemistry ; Organic chemistry ; Nanotechnology ; Engineering Nanomaterials for catalytic reactions ; Engineering and Technology Innovations ; Membrane Separation Technologies
Authors: Kseniia Burkovskaia | Michał Strankowski | Krzysztof Szafran
Source: Coatings (article, 2025-12-28)
Field: Materials Science — Materials Chemistry

Synergistic Effects of Graphene and SiO2 Nanoadditives on Dirt Pickup Resistance, Hydrophobicity, and Mechanical Properties of Architectural Coatings: A Systematic Review and Meta-Analysis This article provides a comprehensive review of the literature on the use of graphene-based nanomaterials (graphene oxide, reduced graphene oxide, and graphene nanoplatelets) and nanosilica (SiO2) in architectural paint and coatings. The aim was to quantitatively assess their effect on dirt pickup resistance, hydrophobicity, and mechanical properties. In a systematic search across ScienceDirect, Scopus, and Web of Science (2010–2025), 20 studies that met the set inclusion criteria were identified. We extracted and generalized data with random-effects models (REML) based on standardized mean differences, conducting subgroup and meta-regression analyses to assess filler type, loading, and binder system impact. The results reveal that graphene-based fillers and SiO2 improve coating performance at the same time, and hybrid graphene-SiO2 systems may provide a synergistic improvement depending on the binder matrix. Our results present the first quantitative evidence of graphene-SiO2 interaction in the coating formulations, identify remaining research gaps, and indicate methods for designing next-generation facade paints with better dirt repellence, durability, and sustainability. Dirt ; Graphene ; Coating ; Filler (materials) ; Nanomaterials ; Pickup ; Inclusion (mineral) Magnesium Oxide Properties and Applications ; Concrete and Cement Materials Research ; Corrosion Behavior and Inhibition
Authors: Nurul Husna Mohd Yusoff | L.E. Loh | Chien Hwa Chong | Voon-Loong Wong | Kean How Cheah | Yoke Kin Wan
Source: International Journal of Chemical Engineering (article, 2025-01-01)
Field: Materials Science — Surfaces, Coatings and Films

Electron Beam‐Induced Surface Modification on Nanochitosan‐Grafted 3D‐Printed Monoliths for Enhanced Wastewater Color Removal The utilization of 3D printing technology has brought about significant advancements in various industries, including wastewater treatment. 3D printing has garnered considerable attention due to its affordability, user‐friendliness, and ability to manufacture complex structures rapidly with minimal wastage, aligning with sustainability goals. This study aims to enhance the color removal efficiency and reduce the processing time in color removal using different electron beam (EB) irradiation treatments at 50 cGy (0.125 min), 100 cGy (0.25 min), and 200 cGy (0.5 min) on silane‐grafted nanochitosan of a 3D‐printed monolith for adsorption performance in a batch process. Using 200 cGy for 0.5 min, the highest removal efficiency of 96% with an adsorption capacity of 12.2 ± 0.7 mg/g was achieved within 80 min, compared to 2 h without EB irradiation treatments. Several characterization examinations were conducted to obtain a comprehensive understanding of the surface morphology and topology, chemical structure, and elemental compositions of the silane‐grafted nanochitosan. The results revealed that with increasing EB irradiation, the surface roughness changed, enhancing the adsorption performance for wastewater treatment. Adsorption ; Wastewater ; Surface modification ; Scanning electron microscope ; Surface roughness ; Irradiation ; Monolith ; Surface finish Surface Modification and Superhydrophobicity ; Electrospun Nanofibers in Biomedical Applications ; Adsorption and biosorption for pollutant removal
Authors: Marklaw Wu | Ikung Cheng | Hiroyuki Matsumoto | Masayuki Fujimoto
Source: International Journal of Applied Ceramic Technology (article, 2025-10-21)
Field: Materials Science — Materials Chemistry

Reliability improvement in BaTiO <sub>3</sub> ‐based multilayer ceramic capacitors by incorporating alloying of nickel internal electrodes Abstract The mechanism of the reliability improvement by alloying Ni internal electrodes of BaTiO 3 ‐based multilayer ceramic capacitors (MLCCs) was studied from two perspectives: electric barrier formation at the electrode‐dielectric interface and diffusion of alloying elements into the bulk dielectric layer. In the case of Ni‐Sn alloy electrodes, the reliability improvement is due to the formation of a Sn segregation layer at the interface between the internal electrode and the dielectric layer, and the associated formation of a Schottky barrier, which is an electron barrier layer. Therefore, when the dielectric layer is sufficiently thin, this electron barrier layer functions critically, but as the dielectric film thickness increases, the effect of this barrier layer gradually decreases because of an increased number of grain boundaries and the grains in the dielectric layer, which are other factors that determine the insulation. On the other hand, in the case of Ni‐In alloy electrodes, In diffuses not only at the interface between the internal electrode and the dielectric, but also into the shell part of the “core‐shell” structure of the BaTiO 3 grains in the dielectric layer along with the grain boundaries. Therefore, it was revealed that the reliability improvement continues even if the dielectric thickness increases to a certain extent. The outstanding improvement in the reliability of the Ni–In MLCC could be derived from not only the formation of an electrical barrier at the interface between the internal electrode and the dielectric layer, but also enhanced resistivity provided by a grain boundary barrier layer and an intragranular acceptor region at the shell region of the core‐shell structure by the In diffusion. Dielectric ; Ceramic capacitor ; Grain boundary ; Electrode ; Alloy ; Layer (electronics) ; Capacitor ; Schottky barrier Ferroelectric and Piezoelectric Materials ; Semiconductor materials and devices ; Microwave Dielectric Ceramics Synthesis
Authors: İdris Durna | Recep Çatar | Hikmet Altun
Source: Sakarya University Journal of Science (article, 2025-12-11)
Field: Materials Science — Biomaterials

Effect of Plasma Electrolytic Oxidation Process on Corrosion Resistance of Al-Coated AZ61 Magnesium Alloy Magnesium alloys are extensively utilized in aerospace, aviation, and automotive sectors due to their low density and high specific strength, which offer significant advantages for lightweight structural applications. Their low density especially directs the attention of the aviation sector, where lightness is necessary, to these alloys. However, one of the disadvantages that restricts their use in the industry is their low corrosion resistance. In this study, the Plasma Electrolytic Oxidation (PEO) process was applied in a silicate-based electrolyte to AZ61 magnesium alloy pre-coated with aluminum using the electric arc spraying technique. To examine the characteristics of the fabricated coatings, their phase structures, surface features, and elemental compositions were investigated through XRD, SEM, and EDS analyses. Corrosion performances of coatings were investigated by potentiodynamic polarization test in 3.5% NaCl solution. As a result of electrochemical tests, corrosion current density values for the base sample (AZ61) and PEO coating (AZ61-PEO) were determined as 36,29〖 μA.cm〗^(-2) and 6,53〖 μA.cm〗^(-2), respectively. The findings highlight that the Al₂O₃ layer formed following PEO treatment significantly enhanced the corrosion resistance compared to the base sample. Corrosion ; Plasma electrolytic oxidation ; Electrolyte ; Magnesium alloy ; Current density ; Coating ; Electrochemistry ; Alloy Magnesium Alloys: Properties and Applications ; Metallurgy and Material Science ; Aluminum Alloy Microstructure Properties
Authors: Antonello Merlino
Source: Frontiers in Chemical Biology (article, 2025-09-29)
Field: Materials Science — Materials Chemistry

X-ray structures of metal-protein adducts at body temperature: concepts, examples and perspectives Most protein structures deposited in the Protein Data Bank have been determined at 100 K by collecting X-ray diffraction data while holding crystals under a liquid nitrogen flux. Recently, the growing awareness that low-temperature diffraction data collection is accompanied by artifacts and by a loss of physiologically relevant information has driven crystallographers to collect X-ray diffraction data at room temperature or at body temperature (37 °C). Here, the results obtained from recent structural determinations of metal-protein adducts at body temperature are briefly discussed. Diffraction ; Adduct ; X-ray crystallography ; Protein Data Bank ; Powder diffraction ; Nitrogen Enzyme Structure and Function ; Protein Structure and Dynamics ; Trace Elements in Health