jablonkagroup/rise_ai_scientists huggingface dataset:
Authors: Ling Chen | Linhui Fu | Kai Feng | Xinle Zhang | Jiang Gong | Jinping Qu | Ran Niu
Source: Advanced Functional Materials (article, 2025-06-29)
Field: Chemistry — Inorganic Chemistry

Ion Exchange‐Based Microreactors Harness Self‐Generated pH Gradients and Long‐Range Flow for Dual‐Enhanced Uranium Extraction Abstract Radioactive uranium presents a significant threat to human health and the aquatic ecosystem. Therefore, uranium extraction technologies with high efficiency, environmental friendliness, and high selectivity are highly required, but remain challenging. In this work, a microreactor based on cation‐exchange reaction (CIEX) is designed for dual‐enhanced uranium extraction. The microreactor with local pH regulation, self‐generated long‐range flow, abundant functional groups, and the photoreduction greatly enhances the transport of uranium toward the adsorbent, as well as the adsorption of binding sites by breaking the adsorption–desorption equilibrium in an energy‐saving and environmentally friendly manner. Benefited from the above, a significant uranium removal capacity of 1556 ± 44.5 mg g −1 is reached within 120 min in 30 mg L −1 uranium solution. Meanwhile, the microreactor shows high selectivity toward uranium among other cations, applicability in various non‐marine waters, and good recyclability. This work proposes a unique methodology for autonomous uranium removal with minimized secondary pollution. Microreactor ; Materials science ; Uranium ; Extraction (chemistry) ; Range (aeronautics) ; Ion exchange ; Ion ; Dual (grammatical number) ; Flow (mathematics) ; Nanotechnology ; Analytical Chemistry (journal) ; Chromatography ; Mechanics ; Composite material ; Metallurgy ; Organic chemistry ; Chemistry ; Catalysis Radioactive element chemistry and processing ; Innovative Microfluidic and Catalytic Techniques Innovation ; Analytical chemistry methods development
Authors: Hsin‐Yi Tsai | Yu–Hsuan Lin | Kuo Cheng Huang | J. Andrew Yeh | Yi Yang | Chien‐Fang Ding
Source: Micromachines (article, 2025-01-01)
Field: Materials Science — Materials Chemistry

A Comparative Analysis of Laser-Ablated Surface Characteristics Between the Si Face and C Face of Silicon Carbide Substrates Silicon carbide (SiC) has significant potential as a third-generation semiconductor material due to its exceptional thermal and electronic properties, yet its high hardness and brittleness make processing costly and complex. This study introduces ultraviolet laser ablation as a method for direct SiC material removal, investigating the effects of varying scanning speeds on surface composition, hardness, and ablation depth. The results indicate optimal processing speeds for the Si and C faces at 200 mm/s and 100 mm/s, respectively. Ablation depth is linearly correlated with laser repetitions, achieving a 25% improvement in removal efficiency at 100 mm/s on the C face compared to higher speeds. A composition analysis shows that the Si and C faces of SiC exhibit consistent ratios of Si, O, and C both before and after ablation. Post-ablation, the proportion of Si and C decreases with an increased presence of oxygen. At scanning speeds below 200 mm/s, the variation in speed has minimal effect on the compositional ratios, indicating a stable elemental distribution across the surface despite differences in processing speed. Hardness testing indicates an initial hardness of 13,896 MPa for the C face, higher than that of the Si face, with both surfaces experiencing a drop to less than 1% of their original hardness (below 50 MPa) after ablation. Lattice structure analysis shows Moissanite-5H SiC and cubic silicon formation on the Si face, while the C face retains partial SiC structure. This study found that when laser parameters are used to process SiC, the processing parameters required on both sides are different and provide important reference information for future industrial processing applications to shorten the time and process cost of SiC surface thinning. Materials science ; Silicon carbide ; Ablation ; Silicon ; Laser ablation ; Brittleness ; Laser ; Composite material ; Analytical Chemistry (journal) ; Optoelectronics ; Optics ; Chemistry Diamond and Carbon-based Materials Research ; Advanced Surface Polishing Techniques ; Silicon Carbide Semiconductor Technologies
Authors: Christian Roßner
Source: Macromolecular Rapid Communications (review, 2025-01-09)
Field: Materials Science — Electronic, Optical and Magnetic Materials

Polymer‐Grafted Gold Colloids and Supracolloids: From Mechanisms of Formation to Dynamic Soft Matter Gold nanoparticles represent nanosized colloidal entities with high relevance for both basic and applied research. When gold nanoparticles are functionalized with polymer-molecule ligands, hybrid nanoparticles emerge whose interactions with the environment are controlled by the polymer coating layer: Colloidal stability and structure formation on the single particle level as well as at the supracolloidal scale can be enabled and engineered by tailoring the composition and architecture of this polymer coating. These possibilities in controlling structure formation may lead to synergistic and/or emergent functional properties of such hybrid colloidal systems. Eventually, the responsivity of the polymer coating to external triggers also enables the formation of hybrid supracolloidal systems with specific dynamic properties. This review provides an overview of fundamentals and recent developments in this vibrant domain of materials science. Nanotechnology ; Materials science ; Polymer ; Coating ; Nanoparticle ; Colloidal gold ; Colloid ; Soft matter ; Particle (ecology) ; Chemistry ; Composite material ; Organic chemistry Gold and Silver Nanoparticles Synthesis and Applications ; Pickering emulsions and particle stabilization ; Polymer Surface Interaction Studies
Authors: Wenhui Du | Kaiying Dou | Xinru Li | Ying Dai | Zeyan Wang | Baibiao Huang | Yandong Ma
Source: Nature Communications (article, 2025-07-03)
Field: Materials Science — Electronic, Optical and Magnetic Materials

Topological layer Hall effect in two-dimensional type-I multiferroic heterostructure Magnetic skyrmion and layer physics have attracted considerable interest for their significance in fundamental research and practical device applications. Here, through symmetry and model analysis, we propose a mechanism for coupling magnetic skyrmion and layer physics in two-dimensional type-I multiferroic heterostructure, which generates the concept of topological layer Hall effect. Distinct from the existing layer Hall effects that are all driven by momentum-space Berry phase relied on fine-tuned bands, topological layer Hall effect correlates to the layer-polarized real-space Berry physics from noncoplanar spin textures of layer-locked magnetic skyrmion with nontrivial topology. Such layer-polarized real-space Berry physics acts as equivalent electromagnetic field and forces conduction electrons to transversely deflect to specific boundary of one given layer, yielding the anomalous Hall conductivity and thus topological layer Hall effect. Moreover, magnetoelectric coupling can enforce topological layer Hall effect being effectively controllable through ferroelectricity and magnetism. Using first-principles calculations and atomic spin model simulations, we also demonstrate this mechanism in two-dimensional multiferroic heterostructure of CrInSe<sub>3</sub>/In<sub>2</sub>S<sub>3</sub>/CrInSe<sub>3</sub>. Our study greatly enriches the researches on magnetic skyrmion and layer Hall effect. Hall effect ; Condensed matter physics ; Physics ; Topology (electrical circuits) ; Skyrmion ; Multiferroics ; Coupling (piping) ; Spin (aerodynamics) ; Geometric phase ; Magnetic field ; Ferroelectricity ; Quantum mechanics ; Materials science Multiferroics and related materials ; Magnetic properties of thin films ; 2D Materials and Applications
Authors: Michał Czerwiński | Mateusz Filipow | Klaudia Łuczak | Dorota Węgłowska
Source: Materials (article, 2025-05-17)
Field: Materials Science — Electronic, Optical and Magnetic Materials

Ferroelectric Smectic Liquid Crystalline Materials with Different Degree of Chirality Ferroelectric liquid crystals (FLCs) are key materials for high-speed electro-optical applications, yet achieving optimal properties over a broad temperature range down below room temperature remains a challenge. This study presents a novel series of systematically designed FLC mixtures, incorporating components with three degrees of chirality-achiral systems, with one center of chirality and with two centers of chirality-to optimize the mesomorphic stability, electro-optical response, and physicochemical properties. The strategic doping by chiral components up to a 0.2 weight fraction extends the temperature range of the ferroelectric phase while lowering the melting temperature. Notably, mixtures containing two chiral centers exhibit shorter helical pitches, while increasing chirality enhances the tilt angle of the director and spontaneous polarization. However, in a mixture containing all three types of chirality (CchM), spontaneous polarization decreases due to opposing vector contributions. Switching time analysis reveals that a system with achiral components and those with two centers of chirality (A-BchM) exhibits the fastest response, while CchM demonstrates only intermediary behavior, caused by its high rotational viscosity. Among all formulations, those containing compounds with two centers of chirality display the most favorable balance of functional properties for deformed helix ferroelectric liquid crystal (DHFLC) applications. One such mixture achieves the lowest melting temperature reported for DHFLC-compatible FLCs, enabling operation at sub-zero temperatures. These findings pave the way for next-generation electro-optical devices with enhanced performance and appropriate environmental stability. Chirality (physics) ; Ferroelectricity ; Materials science ; Liquid crystal ; Polarization (electrochemistry) ; Phase (matter) ; Chemical physics ; Polar ; Atmospheric temperature range ; Nanotechnology ; Dielectric ; Optoelectronics ; Chemistry ; Thermodynamics ; Organic chemistry ; Physics ; Physical chemistry Liquid Crystal Research Advancements ; Plant Reproductive Biology ; Molecular spectroscopy and chirality
Authors: Yilin Guo | Xin Pan | Yidi Zhang | Ke Su | Rong‐Jun Xie | Jiayan Liao | Lefu Mei | Libing Liao
Source: Nanomaterials (article, 2025-02-19)
Field: Materials Science — Materials Chemistry

Crystal Phase and Morphology Control for Enhanced Luminescence in K3GaF6:Er3+ Upconversion luminescent materials (UCLMs) have garnered significant attention due to their broad potential applications in fields such as display technology, biological imaging, and optical sensing. However, optimizing crystal phase and morphology remains a challenge. This study systematically investigates the effects of phase transformation and morphology control on the upconversion luminescent properties of K<sub>3</sub>GaF<sub>6</sub>:Er<sup>3+</sup>. By comparing different synthesis methods, we found that the hydrothermal method effectively facilitated the transformation of the Na<sub>x</sub>K<sub>3-x</sub>GaF<sub>6</sub> crystal phase from cubic to monoclinic, with Na<sup>+</sup>/K<sup>+</sup> ions playing a key role in the preparation process. Furthermore, the hydrothermal method significantly optimized the particle morphology, resulting in the formation of uniform octahedral structures. The 657 nm red emission intensity of the monoclinic phase sample doped with Er<sup>3+</sup> was enhanced by 30 times compared to that of the cubic phase, clearly demonstrating the crucial role of phase transformation in luminescent performance. This study emphasizes the synergistic optimization of crystal phase and morphology through phase engineering, which substantially improves the upconversion luminescence efficiency of K<sub>3</sub>GaF<sub>6</sub>:Er<sup>3+</sup>, paving the way for further advancements in the design of efficient upconversion materials. Monoclinic crystal system ; Photon upconversion ; Luminescence ; Materials science ; Phase (matter) ; Hydrothermal circulation ; Crystal (programming language) ; Nanotechnology ; Hydrothermal synthesis ; Crystal structure ; Ion ; Crystallography ; Chemical engineering ; Optoelectronics ; Chemistry ; Computer science ; Organic chemistry Luminescence Properties of Advanced Materials ; Inorganic Fluorides and Related Compounds ; Radiation Detection and Scintillator Technologies
Authors: Ebtesam E. Ateia | Shaimaa Fouad | Amira T. Mohamed
Source: Applied Physics A (article, 2025-11-10)
Field: Materials Science — Materials Chemistry

Characterization of spinel ferrite nano composites: from synthesis to applications Abstract Nanocomposites (NCs) with integrated functionalities are promising candidates for advanced applications; however, combining materials with distinct structures and magnetic properties remains challenging. In the present work, CaFe₂O₄–CoFe₂O₄ NCs are synthesized using a simple sonication approach. The structural and morphological properties are examined by X-ray diffraction (XRD), Field Emission Scanning Electron Microscopy (FESEM), High-Resolution Transmission Electron Microscopy (HRTEM), and Energy-Dispersive X-ray spectroscopy (EDX). The coexistence of diffraction peaks from both phases confirms the successful formation of the nanohybrid. Magnetic measurements reveal a well-defined hysteresis loop, indicating strong exchange coupling between the two phases. Elastic analysis shows that the longitudinal wave velocity is approximately twice that of the transverse velocity, and the calculated Debye temperature (θ D ) is in good agreement with reported values. Our results provide insight into the interplay between structure, elasticity, and magnetism in CaFe₂O₄–CoFe₂O₄ NCs. The obtained values of the energy gap along with the position of valence and conduction bands promote the creation and efficient separation of charges. The enhanced charge separation and interfacial charge transfer suggest that the synthesized NCs are appropriate for photocatalytic applications. Transmission electron microscopy ; Magnetism ; Diffraction ; Nanocomposite ; Spectroscopy ; Analytical Chemistry (journal) ; Nano- ; Characterization (materials science) ; Electron diffraction Magnetic Properties and Synthesis of Ferrites ; Nanoparticle-Based Drug Delivery ; Electromagnetic wave absorption materials
Authors: Yuchun Liu | Yi‐Fan Chen | Yu‐Chun Lin | You‐Hao Zheng | Lin‐Ruei Lee | Ming‐Hsuan Chang | Jhih‐Hao Ho | Yu‐Liang Lin | Jiun‐Tai Chen
Source: Advanced Materials Interfaces (article, 2025-01-09)
Field: Materials Science — Materials Chemistry

Tailoring Nanopore Geometry in Anodic Aluminum Oxide Membranes through Physical Stretching and Controlled Anodization Abstract The fabrication and application of anodic aluminum oxide (AAO) membranes with tailored nanopore geometries have profound implications in materials science and engineering. This study introduces a refined physical stretching method combined with precisely controlled anodization conditions to manipulate the anisotropy of nanopores in AAO membranes. By employing high‐purity aluminum sheets and varying electrolytes such as sulfuric acid, oxalic acid, and phosphoric acid, anisotropic shapes are carried out with aspect ratios varying based on the applied mechanical forces and electrolytic conditions. The capability to produce AAO membranes with non‐uniform pore distributions is also demonstrated by applying irregular stretching forces, revealing the potential for creating customized nanostructures. The anisotropic AAO membranes serve as effective templates for synthesizing polymer nanorods, indicating their utility in guiding the formation of advanced nanomaterials with specific directional properties. Our results showcase the role of mechanical and chemical parameters in tailoring nanoscale material properties. The versatility of horizontally anisotropic AAO membranes in nanofabrication enables better control of nanopore geometry for applications in nanoelectronics, drug delivery, and biosensing. Anodizing ; Nanopore ; Materials science ; Anodic Aluminum Oxide ; Anode ; Membrane ; Aluminium ; Aluminum oxide ; Nanotechnology ; Oxide ; Chemical engineering ; Composite material ; Metallurgy ; Electrode ; Fabrication ; Physical chemistry Anodic Oxide Films and Nanostructures ; Nanopore and Nanochannel Transport Studies ; Nanowire Synthesis and Applications
Authors: Camelia Dutta | Anannya Mandal | Abhishek Shukla | Hemaprabha Elangovan | Takuya Nakashima | Jatish Kumar
Source: Angewandte Chemie International Edition (article, 2025-07-24)
Field: Materials Science — Materials Chemistry

Supramolecular Engineering of Cluster‐Assembled Materials for Amplification and Dynamic Modulation of Chiral Luminescence Chiral metal clusters have garnered significant research interest in recent years due to their unique photophysical and chiroptical properties. Increased attention is directed toward bimetallic systems, as the synergistic effect of two different metal centers often yields enhanced properties. Despite this progress, obtaining optically active bimetallic clusters with pronounced chirality, both in their ground and excited states, has remained a challenge. Herein, an efficient strategy is formulated for the controlled aggregation of gold(I)-silver(I) coordination clusters leading to enhanced and tunable optical activity. Interactions with chiral and achiral additives resulted in cluster-assembled materials (CAMs) exhibiting morphology-dependent chiroptical responses. The assembly process, in addition to facilitating aggregation-induced enhanced emission (AIEE), generated inverted and amplified chiroptical responses. Interestingly, the resultant Au(I)Ag(I) composite materials exhibited prolonged excited state lifetimes, indicating the possibility of near room temperature thermally activated delayed fluorescence (TADF) and lower temperature phosphorescence. Circularly polarized luminescence with a dissymmetry factor as high as (±)0.05 could be achieved, the highest reported for any metal cluster to date. The enhanced anisotropy highlights the effectiveness of this strategy in modulating excited-state chirality through hierarchical assembly, opening potential for the nanocomposites as chiral light-emitting materials. Luminescence ; Supramolecular chemistry ; Cluster (spacecraft) ; Modulation (music) ; Materials science ; Nanotechnology ; Optoelectronics ; Computer science ; Chemistry ; Crystallography ; Physics ; Computer network ; Crystal structure ; Acoustics Nanocluster Synthesis and Applications ; Metal-Organic Frameworks: Synthesis and Applications ; Neurological Complications and Syndromes
Authors: Youyang Qu | Bing Zhao | Weiyun Zhao | Yuan Deng
Source: National Science Open (article, 2025-04-11)
Field: Materials Science — Materials Chemistry

Achieving superior thermoelectric transport in bismuth antimony telluride thin films via orientation and microstructure regulation The electron-phonon transport properties of bismuth telluride-based thermoelectric materials are significantly influenced by crystallographic orientation and microstructure engineering. Thin-film materials are proper candidates for the study of structure-property relationship due to abundant microstructures. However, comprehensive studies on thin-film thermoelectric materials remain insufficient. Here, we synthesis p-type Bi0.5Sb1.5Te3 thin films via magnetron sputtering and followed with heat treatment. Preferential growth orientation of thin films exhibits strong dependence on deposition conditions, allowing targeted orientation engineering through process parameter optimization. A high sputtering pressure of 3 Pa produces Bi0.5Sb1.5Te3 thin films with preferred in-plane orientation. The post-heat treatment enables precise regulation of electron-phonon coupling efficiency by engineering defect configurations. The dislocation density was reduced after annealing, and anti-site defects also can be tuned to optimized carrier concentration and mobility. After the heat annealing process under 400 ℃, a super high zT value of 1.49 was achieved at 313 K in Bi0.5Sb1.5Te3 thin film. Antimony ; Bismuth telluride ; Microstructure ; Materials science ; Thermoelectric effect ; Bismuth ; Thin film ; Orientation (vector space) ; Metallurgy ; Thermoelectric materials ; Optoelectronics ; Nanotechnology ; Composite material ; Thermal conductivity ; Geometry ; Physics Advanced Thermoelectric Materials and Devices ; Advanced Semiconductor Detectors and Materials ; Machine Learning in Materials Science
Authors: Francisco Joel Guerrero-Vasquez | Francisco Ortega | Ramón G. Rubio | Eduardo Guzmán
Source: Colloids and Interfaces (article, 2025-01-22)
Field: Materials Science — Materials Chemistry

Bio-Based Interpolyelectrolyte Complexes for the Stabilization of Pickering-like Emulsions This work studies the stabilization of Pickering-like emulsions using dispersions of interpolyelectrolyte complexes (IPECs) formed by chitosan (CS) and sodium alginate (ALG), two polymers from natural resources, as the aqueous phase and soybean oil as the oil phase. The ability of these bio-based IPECs to form stable emulsions was evaluated by varying the compositional ratio of CS to ALG (Z-ratio) and the oil volume fraction (ϕo). Turbidity, zeta potential, and dynamic light scattering measurements revealed the dependence of IPEC properties on the Z-ratio, with phase separation observed near stoichiometric ratios. Phase diagram analysis showed that stable oil-in-water (O/W) and water-in-oil (W/O) emulsions could be obtained under certain combinations of the Z-ratio and ϕo. Emulsion stability increased with higher Z-ratios due to increased interfacial activity of the complexes and reduced coalescence. Emulsions with high ϕo exhibited transitions from discrete droplets to bicontinuous interfacially jammed emulsion gels (bijels), suggesting tunable morphologies. These results highlight the potential of CHI-ALG IPECs as eco-friendly and efficient stabilizers of Pickering-like emulsions for applications in food, cosmetics and pharmaceuticals. Pickering emulsion ; Chemical engineering ; Materials science ; Nanotechnology ; Chemistry ; Engineering ; Nanoparticle Pickering emulsions and particle stabilization ; Proteins in Food Systems ; Advanced Polymer Synthesis and Characterization