jablonkagroup/rise_ai_scientists huggingface dataset:
Authors: Sugiarto Sugiarto | MOCH. SYAMSUL MA’ARIF | Ari Wahjudi | Athabarani Ananto
Source:  (article, 2025-01-01)
Field: Materials Science — Materials Chemistry

Analisis Mekanik Sambungan Dissimilar Friction Stir Welding Antara High Density Polyethylene Dengan Polypropylene An important problem with electric vehicles is the weight of the vehicle to reduce electricity consumption. Polymer materials and polymer composites have an important role in the aircraft industry and electric vehicle industry. Several types of thermoplastic polymers are widely used in the automotive industry, such as polyethylene (PE), polypropylene (PP), polystyrene (PS), and polyvinyl chloride (PVC). Popular methods used in the process of joining thermoplastic materials are adhesive bonding and mechanical joining methods. The disadvantage of adhesive bonding in polymer connections is the negative impact on the environment due to the use of chemicals, which cannot be checked qualitatively, including predicting failure. Thermoplastic polymers have low melt weldability properties because the melting temperature is low and softens easily with increasing temperature. Friction stir welding (FSW) is one solution for joining thermoplastic polymers. There are several advantages of FSW compared to fusion welding because the process temperature is below the melting point of the material being welded, and there is no need for gas shielding, low distortion, and low residual stress. FSW is an energy-saving welding process that does not produce smoke, arc flash, or spatter. Several important parameters in FSW welding include spindle rotation speed, feed rate, shoulder pressure, material properties, pin dimensions, and shoulder dimensions. In friction stir welding, welding heat is used to raise the temperature of the metal from its initial state to its solid state temperature. If welding is carried out on two different materials (dissimilar), it will produce different joint characteristics compared to welding a single material (similar). This research aims to determine the effect of changing the spindle rotation speed with variations of 1200 rpm, 1500 rpm, 1800 rpm, and 2100 rpm on the mechanical properties of dissimilar FSW joints between HDPE and PP plates. Several other parameters are kept constant, such as workpiece thickness of 5 mm, welding speed of 3 mm/minute, pin diameter of 6 mm, shoulder diameter of 20 mm, pin length of 4.3 mm, welding angle of 0º, and plunge depth of 0.3 mm. The result is that the faster the spindle rotates, the higher the welding center temperature. Hardness at the weld center and tensile strength of the joint increased from spindle rotation of 1200 rpm to 1800 rpm and decreased again at spindle rotation of 2100 rpm. The average tensile strength of the specimen at a spindle rotation of 1800 rpm is 19.05 MPa, and the average hardness is 66 hs. Materials science ; Friction stir welding ; Welding ; Polypropylene ; Composite material ; Metallurgy Material Selection and Properties ; Tribology and Wear Analysis
Authors: Xiangrong Guo | Lijiao Chen | Bing He | Sijie Liu | Lirong Liu | Shanshan Wang | Huili Hu
Source: Water Environment Research (article, 2025-08-01)
Field: Chemistry — Analytical Chemistry

Preparation of Electrodes by Molecular Imprinting Technique for Pesticide Detection Pesticides, vital for agricultural productivity, also present health risks due to residues in food and water. Therefore, the development of economical, efficient, reliable, and easy-to-operate pesticide detection technologies is of utmost importance. The synergistic effect of the molecular imprinting technique (MIT) and the electrochemical sensor has attracted wide attention in the field of detection. This review begins with an overview of the fundamental principles of MIT, including its preparation process and emerging imprinting methods. The detailed preparation process of molecularly imprinted electrochemical sensors is then discussed, encompassing the selection of template molecules, functional monomers, and so on. Additionally, the review explores the modification methods of molecularly imprinted polymers (MIPs) and the role of electrode modification materials in enhancing sensor performance. The text lists the detection performance of various molecularly imprinted electrochemical sensors for different pesticides, providing a reference for researchers. Finally, this article discusses the green development of molecularly imprinted electrochemical sensors and anticipates their application prospects in pesticide detection. It also identifies current challenges and suggests potential avenues for advancement. Imprinting (psychology) ; Molecular imprinting ; Pesticide ; Electrode ; Chemistry ; Nanotechnology ; Chromatography ; Environmental chemistry ; Materials science ; Biology ; Organic chemistry ; Gene ; Selectivity ; Catalysis ; Biochemistry ; Ecology Analytical chemistry methods development ; Analytical Chemistry and Sensors ; Electrochemical Analysis and Applications
Authors: Jennifer Theissen | Marvin Radke | Sebastian Mangelsen | Elien Derveaux | Roderick Adams | Jasper Lopau | Christian Näther | Christian Nelle | Jim Struve | Felix Steinke | Nick Gys | Frederik Tielens | Peter Adriaensens | Sebastian Henke | Wouter Marchal | Rob Ameloot | Norbert Stock
Source: ChemRxiv (preprint, 2025-09-17)
Field: Chemistry — Inorganic Chemistry

Isoreticular Expansion in Porous Al(III) and Ga(III) Phosphonates: Synthesis, Structure, and Properties We report the synthesis and structural elucidation of two metal-organic frameworks (MOFs), [M(OH)(H₂BPD)]·xH₂O (M = Al3+, Ga3+), denoted as M-CAU-67, employing the ditopic linker molecule N,N’ 4,4’ bipiperidine bis(methylenephosphonic acid) (H4BPD). The title compounds can be synthesised on a milligram scale under hydrothermal conditions, while gram-scale synthesis was realised under reflux conditions. Single-crystal X-ray diffraction (SCXRD) revealed an isoreticular, expanded MIL-91 type structure, representing a rare case of isoreticular expansion in porous metal phosphonates. The framework structure was confirmed by Rietveld refinement against powder X-ray diffraction (PXRD) data and further validated by solid-state NMR spectroscopy (31P MAS, 27Al 3Q MAS). Solvent-exchange experiments and variable-humidity/temperature PXRD data revealed high framework flexibility. The compounds show permanent microporosity and a complex, polarity- and size-dependent sorption behaviour toward gases and vapours. Microporous material ; Powder diffraction ; Sorption ; Rietveld refinement ; Hydrothermal circulation ; Porosity ; Solvent ; Molecule Zeolite Catalysis and Synthesis ; Chemical Synthesis and Characterization ; Semiconductor materials and interfaces
Authors: Shahriar Akter | Md Harun Or Roshid | Asma Ul Husna | M. R. Chowdhury | Md Rahat Parvez
Source: International Journal of Mechanical and Thermal Engineering (article, 2025-07-01)
Field: Materials Science — Polymers and Plastics

Environmental impact of advanced composite materials in manufacturing industries This study analyzes the environmental impact of advanced composite materials from a 'cradle-to-grave' perspective, comprehensively assessing energy use, carbon emissions, and waste management at each stage, including production, use, and end-of-life recycling. Research shows that while conventional carbon fiber reinforced polymer (CFRP) and glass fiber reinforced polymer (GFRP) materials exhibit high mechanical performance, their production requires significant energy consumption (180-290 MJ/kg) and carbon emissions (8-9 kg CO?eq/kg) and has a profound impact on the environment. In contrast, bio-based composites based on flax and hemp fibers exhibit relatively low energy consumption (60-80 MJ/kg) and a low carbon footprint (1.8-2.5 kg CO?eq/kg), establishing them as sustainable alternatives. Although the use of CFRP and GFRP increases energy efficiency, limitations in recycling reduce their life cycle sustainability. On the other hand, adopting pyrolysis and high-voltage fragmentation (HVF) technologies significantly increases recyclability and energy efficiency. As a result, the research indicates that the integrated application of bio-based sources, renewable energy-based production, circular design, and advanced recycling technologies is capable of leading the advanced composites industry towards a Carbon footprint ; Life-cycle assessment ; Energy consumption ; Renewable energy ; Environmental impact assessment ; Carbon fibers ; Fibre-reinforced plastic ; Greenhouse gas ; Composite number ; Efficient energy use Natural Fiber Reinforced Composites ; Fiber-reinforced polymer composites ; Hygrothermal properties of building materials
Authors: Núria Vigués | Cristina Cantallops‐Vilà | Jordi Mas
Source: Chemosensors (article, 2025-06-09)
Field: Materials Science — Polymers and Plastics

Electrochemical Assessment of Microbial Activity Using PEDOT:PSS-Immobilized Cells This study presents a microbial sensing device that employs a poly(3,4-ethylenedioxythiophene):polystyrene sulfonate (PEDOT:PSS) matrix to immobilize viable and metabolically Escherichia coli cells. This device enables the monitoring of microorganism metabolic activity in response to external stimuli such as variations in carbon sources or exposure to inhibitory or toxic compounds. PEDOT:PSS, a conductive and chemically stable polymer, was electrodeposited onto screen-printed electrodes, successfully entrapping approximately 1.26 × 107 cells per electrode. The confocal microscopy of Live/Dead-stained samples confirmed a uniform cell distribution and an average viability of ~78%. Ferricyanide respirometry validated the metabolic activity of the immobilized cells. The biosensor’s performance was evaluated using 3,5-dichlorophenol (3,5-DCP) as a reference toxicant. The observed inhibition of microbial activity correlated with 3,5-DCP concentration, yielding a half-maximal effective concentration (EC50) of 9 ppm, consistent with the literature values. PEDOT:PSS ; Polystyrene sulfonate ; Conductive polymer ; Bioelectronics ; Respirometry ; Biosensor ; Electrochemistry ; Electrode ; Chemistry ; Metabolic activity ; Viability assay ; Poly(3,4-ethylenedioxythiophene) ; Ferricyanide ; Polymer ; Materials science ; Biochemistry ; Cell ; Biology ; Organic chemistry Conducting polymers and applications ; Electrochemical sensors and biosensors ; Analytical Chemistry and Sensors
Authors: Reza KM
Source: Journal of Biomedical Research & Environmental Sciences (article, 2025-11-01)
Field: Materials Science — Biomaterials

Biopolymer-Based Materials for Medicine and Health Care: A Review Natural polymers are derived from agriculture, forestry and marine products or isolated from their wastes. The use of biopolymers, as opposed to synthetic polymers, offers significant advantages by reducing environmental impact and minimizing potential health risks. This study focuses on three polysaccharides (Cellulose, starch, and chitosan) and one protein (Zein), for applications in medicine and healthcare. These biopolymers and some of their derivatives are well-suited for medicine and healthcare applications, due to their several key properties as follows: (1) They are derived from renewable resources, and are environmentally friendly biomaterials, making them promising materials for sustainable medical uses; (2) These biopolymers possess excellent film- and fiber-forming capabilities, which are essential in biomedical engineering and drug delivery systems; (3) Their hydrophilic nature provide a range of surface functional groups that can bind to bioactive compounds, drugs, target organs, and nutritional components, enhancing their stability and effectiveness; (4) The degree of hydrophilicity varies among different biopolymers, enabling a wide range of chemical modifications and expanding their potential applications across medicine, healthcare, and nutrition; (5) The nano-sized biopolymers have demonstrated superior properties and performances compared to their conventional counterparts, offering advanced functionality in areas such as targeted drug delivery, wound healing, and tissue engineering; and (6) The nano-sized biopolymer-based materials and their nano-composites have found extensive applications in drug deliveries, tissue engineering, diagnostics and therapeutics. Drug delivery ; Environmentally friendly ; Drug ; Human health ; Biopolymer ; Conventional medicine Nanocomposite Films for Food Packaging ; Advanced Cellulose Research Studies ; Hydrogels: synthesis, properties, applications
Authors: Elahe Parvini | Abdollah Hajalilou | Pedro Alhais Lopes | Tiago A. Morgado | Mahmoud Tavakoli
Source: Advanced Materials Technologies (article, 2025-12-12)
Field: Materials Science — Electronic, Optical and Magnetic Materials

Recyclable and Binder‐Free EGaIn–Carbon Liquid Metal Composite: A Sustainable Approach for High‐Performance Stretchable Electronics, Thermal‐Interfacing and EMI‐Shielding ABSTRACT Eutectic Gallium–Indium (EGaIn) liquid metal (LM) is a promising material for stretchable and printed electronics. Conventional LM composites use metallic powders and elastomeric binders to enable coating and printing, but rely on scarce, expensive metals, require sintering, exhibit reduced conductivity, and are difficult to recycle due to strong binding among components. A room temperature, sinter‐free, and binder‐free printable EGaIn–Carbon Black (CB) composite is introduced to address these limitations. The composite avoids intermetallic formation, enhancing recyclability. Although phase separation typically hinders stability, a tailored carbon activation process enables uniform dispersion. Incorporating only 1.5 wt.% CB imparts high viscosity (120 Pa s at 10 s −1 , 25°C), shear‐thinning behavior, and excellent printability without requiring binders. The composite achieves ∼60% of bulk EGaIn conductivity, while dynamic conductive bridge reformation enables mechanical stretchability and strain‐resilient performance. It also exhibits high thermal conductivity and strong electromagnetic interference (EMI) shielding (∼35 dB in the X‐band), which increases to ∼70 dB under 100% strain due to network densification. As thermal interface materials, the composite reduces device temperature from ∼80°C to ∼32°C within 20 min—outperforming commercial silicone pastes—owing to its high thermal conductivity, surface conformity, and stable interfacial contact. Eutectic system ; Composite number ; Liquid metal ; Carbon black ; Thermal conductivity ; Silicone ; Elastomer ; Viscosity ; Electrical conductor Electromagnetic wave absorption materials ; Advanced Sensor and Energy Harvesting Materials ; Nanomaterials and Printing Technologies
Authors: Stefania Alexandra Iakab | Jonas Cordes | Thomas Enzlein | Florian Keller | Kevin Kastner | Theresa Mulholland | Björn Fröhlich | Lars Gruber | James L. Cairns | S. Schmidt | Mathias Hafner | Richard Schneider | Johannes Betge | Frank Fischer | Julian Reichwald | Rüdiger Rudolf | Carsten Hopf
Source: Advanced Science (article, 2025-12-17)
Field: Chemistry — Spectroscopy

From Sample to Mixed Reality: A Translational 3D MALDI Imaging Platform for Advanced 3D Spatial Omics Analysis of 3D Cell Culture Disease Models Human 3D cell cultures, including spheroids and organoids, are essential biological models for translational pharmaceutical and biomedical research. However, their 3D analysis using 2D- matrix-assisted laser desorption/ionization (MALDI) imaging-based spatial metabolomics remains challenging, since end-to-end solutions for 3D-enabling sample preparation, 3D-data processing, 3D-rendering, and 3D-user interaction are lacking. Here, a 3D-MALDI imaging platform and resource that advances each of three pillars is presented: i) the sample preparation introduces custom-designed molds for precise and reproducible embedding and cryosectioning of multiple spheroids and organoids, a substantial improvement over ad hoc or single-sample sectioning workflows; ii) the integrated computational framework that facilitates the generation of high-fidelity volumetric datasets that enable voxel-based analysis for feature discovery, surpassing traditional slice-based 2D analysis; iii) the mixed reality tool enables immersive spatial exploration of molecular distributions in 3D, extending user engagement beyond static 3D renderings. The versatility of the platform is illustrated by its translation to a clinical framework for the molecular profiling of patient-derived colon cancer organoids. Collectively, this integrated approach enables spatial metabolomic analysis in 3D, offers increased throughput, and paves the way for next-generation molecular diagnostics and personalized medicine applications. Profiling (computer programming) ; 3D cell culture ; Sample (material) ; Metabolomics ; Spheroid ; Proteomics ; Translational bioinformatics ; Personalized medicine ; Visualization Mass Spectrometry Techniques and Applications ; Metabolomics and Mass Spectrometry Studies ; Cell Image Analysis Techniques
Authors: Yiyao Huang | Yang Chen | Xuefeng Guo
Source: Transformative Chemistry (article, 2025-12-01)
Field: Materials Science — Electronic, Optical and Magnetic Materials

Single‐Molecule Spintronics: A Reliable Platform for In‐Depth Investigation of Spin Catalysis ABSTRACT Spin catalysis offers a new perspective for developing highly efficient catalytic reactions by leveraging electron angular momentum—another fundamental parameter controlling the chemical reaction. Electron spin plays a critical role in reactions including but not limited to electrochemistry, photochemistry, and organic synthesis. However, the correlation between spin state and reaction efficiency remains incompletely elucidated, which hinders the advancement in this field. The unique capabilities of single‐molecule platforms enable real‐time spin‐state observation and precise manipulation, thus inspiring the exploration of their potential to advance spin catalysis. Accordingly, this perspective examines the prospects of single‐molecule platforms in spin catalysis, with the goal of fostering interdisciplinary research to elucidate the mechanism of spin catalysis and develop novel synthesis methodologies based on precise control of spin states. We first discuss the influence of electron spin on spin‐dependent reaction thermodynamics and kinetics, along with effective approaches to achieve spin manipulation. Building on this foundation, we summarize key challenges and opportunities in spin catalysis and evaluate the potential of single‐molecule platforms for mechanistic studies and precision synthesis in spin catalysis, including efficient spin injection, precise spin‐state detection, and coherent spin manipulation. Spin (aerodynamics) ; Spin engineering ; Spin states ; Catalysis ; Mechanism (biology) Magnetism in coordination complexes ; Gold and Silver Nanoparticles Synthesis and Applications ; Molecular Junctions and Nanostructures
Authors: Shangyan Zhou | Fei Liu | Yuliang Ran | Jia‐Min Wang | Huarui Wang | Tianyu Yang | Xiaodan Wang
Source: Nano Research (article, 2025-06-23)
Field: Materials Science — Materials Chemistry

Constructing double-tuned Ru nanoparticles and Co single atoms on MXene/TiO <sub>2</sub> heterojunctions as for efficient oxygen evolution reaction electrocatalyst Water electrolysis to produce hydrogen has broad prospects due to its pollution-free feature, yet it's electrolysis efficiency is limited by the slow kinetics of the anodic oxygen evolution reaction (OER). In this study, we develop a synergistic catalyst which integrates MXene/TiO<sub>2</sub>-supported Ru nanoparticles and oxygen-coordinated Co single atoms (RuCo-MXene/TiO<sub>2</sub>) for efficient OER. This double-tuned structure enables both high-density active sites and precise microenvironment control. Moreover, the interaction between metals during annealing process provides the generation of metallic-bonded Ru-Co pairs between Ru nanoparticles and Co single atoms, facilitating Ru nanoparticles-to-support charge transfer, resulting in optimized electronic properties of the catalyst. As expected, the as-synthesized RuCo-MXene/TiO<sub>2</sub> catalyst at 10 mA cm<sup>−2</sup> current density exhibits 208 mV low overportential and a long-term stability of up to 500 hours, which is superior to Ru-MXene/TiO<sub>2</sub> and Co-MXene/TiO<sub>2</sub>. This work provides a promising strategy for designing efficient and stable electrocatalysts for renewable energy applications. Electrocatalyst ; Heterojunction ; Oxygen evolution ; Nanoparticle ; Oxygen ; Materials science ; Oxygen reduction reaction ; Catalysis ; Chemical engineering ; Nanotechnology ; Chemistry ; Photochemistry ; Physical chemistry ; Electrochemistry ; Optoelectronics ; Electrode MXene and MAX Phase Materials ; Electrocatalysts for Energy Conversion ; Advanced Memory and Neural Computing
Authors: Shubhangi Das | Louise Carson | Chi-Wai Chan
Source: Metals (article, 2025-12-24)
Field: Materials Science — Biomaterials

Therapeutic Potential of 3D-Printed Alloys as Drug-Eluting Implants: Current Progress In physiological environments, several metallic alloys, including titanium, stainless steel, cobalt–chromium, and emerging biodegradable systems such as magnesium (Mg), zinc (Zn), and iron (Fe), offer mechanical properties and biocompatibility suitable for load-bearing implants. With the rapid advancement of 3D printing technologies, these alloys can now be fabricated into patient-specific, complex geometries that enhance both structural performance and functional integration. Beyond serving as structural supports, 3D-printed alloys are increasingly engineered as localized drug-delivery platforms to release anti-inflammatory, antibacterial, anticancer, and osteogenic agents at the implant–tissue interface, addressing the dual clinical needs of site-specific therapy and mechanical stabilization. Nevertheless, this field remains underexplored because studies differ widely in alloy chemistry, surface topography, porosity, coating strategy, drug-loading methods, and release profiles, as well as in how material degradation or passivation interacts with pharmacokinetics. For the first time, this review consolidates drug-loading and elution strategies across 3D-printed alloy platforms, compares therapeutic categories in relation to alloy and coating types, and critically evaluates how the surface microstructure or alloy geometry influences release behavior. Biocompatibility ; Alloy ; Passivation ; Coating ; Microstructure ; Magnesium alloy ; Surface modification Magnesium Alloys: Properties and Applications ; Bone Tissue Engineering Materials ; Cellular and Composite Structures