jablonkagroup/rise_ai_scientists huggingface dataset:
Authors: Hanan O. Farouk | Hager Ebrahim | Heba Sonbol | Monika Malak | Maha Kamal | Noha Ibrahim | Ahmed M. Shawky | Walaa Zarad | Ahmed Emad | Samy Emara
Source: Separations (article, 2023-06-13)
Field: Chemistry — Spectroscopy

Sensitivity Enhancement for Separation-Based Analytical Techniques Utilizing Solid-Phase Enrichment Approaches and Analyte Derivatization for Trace Analysis in Various Matrices Despite the fact that strong routine separation methodologies can give reliable specificity and validity at usual working pharmaceutical concentrations, they may fail at very low concentration levels. This poses considerable challenges for researchers investigating product purity and therapeutic drug monitoring. Sensitivity enhancement procedures are thus required to maximize the performance of separation techniques. Solid-phase extraction/solid-phase enrichment (SPE/SPEn) and pre-, post-, and in-column derivatization, as well as the use of sensitive detection devices, are the simplest strategies for improving sensitivity of separation-based analytical techniques. Large-volume injection of samples with online SPE/SPEn coupled with separation techniques increased sensitivity and improved detection as well as quantification limits without affecting peak shape and system performance. Although the primary purpose of derivatization is to improve sensitivity and selectivity, greener derivatization is growing in popularity and should be considered in analytical chemistry. In general, two strategies are essential for accomplishing greener derivatization goals. The first is the search for and use of ecologically acceptable derivatizing reagents, solvents, and reaction conditions. The second is miniaturization and automation of analytical methods. This review discusses significant advances in separation-based analytical techniques, specifically enrichment approaches and detector signal improvement for pharmaceutical quantification in various matrices at very low concentration levels. As a result of improved analytical systems setup in drug assays, the possibility of high-throughput analyses was also highlighted. Derivatization ; Analyte ; Chromatography ; Solid phase extraction ; Chemistry ; Sensitivity (control systems) ; Miniaturization ; Process engineering ; Computer science ; Detection limit ; High-performance liquid chromatography ; Materials science ; Nanotechnology Analytical Chemistry and Chromatography ; Microfluidic and Capillary Electrophoresis Applications ; Analytical chemistry methods development
Authors: Sara Gimondi | Helena Ferreira | Rui L. Reis | Nuno M. Neves
Source: International Journal of Molecular Sciences (article, 2023-12-25)
Field: Materials Science — Biomaterials

Intracellular Trafficking of Size-Tuned Nanoparticles for Drug Delivery Polymeric nanoparticles (NPs) are widely used as drug delivery systems in nanomedicine. Despite their widespread application, a comprehensive understanding of their intracellular trafficking remains elusive. In the present study, we focused on exploring the impact of a 20 nm difference in size on NP performance, including drug delivery capabilities and intracellular trafficking. For that, poly(ethylene glycol) methyl ether-block-poly(lactide-co-glycolide) (PLGA-PEG) NPs with sizes of 50 and 70 nm were precisely tailored. To assess their prowess in encapsulating and releasing therapeutic agents, we have employed doxorubicin (Dox), a well-established anticancer drug widely utilized in clinical settings, as a model drug. Then, the beneficial effect of the developed nanoformulations was evaluated in breast cancer cells. Finally, we performed a semiquantitative analysis of both NPs' uptake and intracellular localization by immunostaining lysosomes, early endosomes, and recycling endosomes. The results show that the smaller NPs (50 nm) were able to reduce the metabolic activity of cancer cells more efficiently than NPs of 70 nm, in a time and concentration-dependent manner. These findings are corroborated by intracellular trafficking studies that reveal an earlier and higher uptake of NPs, with 50 nm compared to the 70 nm ones, by the breast cancer cells. Consequently, this study demonstrates that NP size, even in small increments, has an important impact on their therapeutic effect. Intracellular ; Drug delivery ; Nanoparticle ; Drug trafficking ; Chemistry ; Pharmacology ; Cell biology ; Nanotechnology ; Biology ; Materials science ; Psychology Nanoparticle-Based Drug Delivery ; Advanced Drug Delivery Systems ; RNA Interference and Gene Delivery
Authors: Renhao Liu | Chen Zhang | Hongli Ji | Chao Zhang | Jinhao Qiu
Source: Actuators (article, 2023-01-05)
Field: Materials Science — Materials Chemistry

Training, Control and Application of SMA-Based Actuators with Two-Way Shape Memory Effect Shape memory alloys (SMAs) are widely used in aerospace, automobile, and other fields because of their excellent properties, such as large driving force and large deformation. A training method with a bidirectional memory effect is proposed for SMA actuators. The trained SMA units can be heated and cooled to change their shape (shorten and extend). The trained SMA is used as an actuator to drive the deformation of a structure. Due to the obvious hysteresis characteristics of SMA, a temperature-displacement hysteresis model based on the Preisach model is proposed in order to reduce the influence of hysteresis in the process of structural deformation. The F function method (FFM) is used for Preisach numerical implementation, and a PID control method is used for the precise control of structural deformation. Compared with the PID control method without hysteresis model, this method is superior to the PID control method in response speed and control accuracy. The maximum relative error of three target points in the experiment is 5.45%, which is better than the PID control method without this model. The hysteresis model can be applied to the displacement control of a SMA-based actuator. SMA* ; Shape-memory alloy ; Actuator ; Hysteresis ; PID controller ; Control theory (sociology) ; Displacement (psychology) ; Deformation (meteorology) ; Process (computing) ; Computer science ; Materials science ; Engineering ; Control engineering ; Temperature control ; Control (management) ; Physics ; Artificial intelligence ; Algorithm Shape Memory Alloy Transformations ; Piezoelectric Actuators and Control ; Topology Optimization in Engineering
Authors: Feifei Zhao | Bin Wang | Jingwei Chen | Sheng Cao | Yadong Yang | William W. Yu | Haizeng Li
Source: physica status solidi (RRL) - Rapid Research Letters (article, 2023-10-31)
Field: Materials Science — Polymers and Plastics

Hydrogel, the Next‐Generation Electrolyte for Electrochromic Devices Electrolytes have become a research frontier in the electrochromic community owing to their widespread applications in advanced electronic devices especially in electrochromic devices (ECDs). However, traditional ECDs with liquid electrolytes commonly suffer from inflexibility, complicated configurations, and poor electrochromic properties. To achieve solid‐ or flexible‐state ECDs, an alternative method is to employ polymer electrolyte gels, which integrate the virtues of both liquid‐ and solid‐state electrolytes. In this review, first, the device configurations of conventional ECDs are introduced, where the classification of electrolytes for ECDs is comprehensively introduced. Then the current situation and applications of hydrogels for ECDs, where it is expected to reveal the developing trends of hydrogel‐based ECDs are specially reviewed. Finally, the insights on the design methods of hydrogel electrolytes for flexible and efficient ECDs are proposed. Electrochromism ; Electrochromic devices ; Electrolyte ; Materials science ; Nanotechnology ; Electrode ; Chemistry Conducting polymers and applications ; Transition Metal Oxide Nanomaterials ; Advanced Sensor and Energy Harvesting Materials
Authors: V. A. Milyutin | Radovan Búreš | Mária Fáberová
Source: Condensed Matter (article, 2023-09-08)
Field: Materials Science — Electronic, Optical and Magnetic Materials

Prospects of Using Fe-Ga Alloys for Magnetostrictive Applications at High Frequencies Fe-Ga is a promising magnetostrictive rare-earth free alloy with an attractive combination of useful properties. In this review, we consider this material through the lens of its potential use in magnetostrictive applications at elevated frequencies. The properties of the Fe-Ga alloy are compared with other popular magnetostrictive alloys. The two different approaches to reducing eddy current losses for such applications in the context of the Fe-Ga alloy, in particular, the fabrication of thin sheets and Fe-Ga/epoxy composites, are discussed. For the first time, the results of more than a decade of research aimed at developing each of these approaches are analyzed and summarized. The features of each approach, as well as the advantages and disadvantages, are outlined. In general, it has been shown that the Fe-Ga alloy is the most promising magnetostrictive material for use at elevated frequencies (up to 100 kHz) compared to analogs. However, for a wide practical application of the alloy, it is still necessary to solve several problems, which are described in this review. Magnetostriction ; Alloy ; Materials science ; Fabrication ; Context (archaeology) ; Metallurgy ; Computer science ; Engineering physics ; Magnetic field ; Engineering ; Physics ; Geology Magnetic Properties and Applications ; Microstructure and Mechanical Properties of Steels ; Magnetic properties of thin films
Authors: Belan MOHAMMED IBRAHIM | Safar Saeed Mohammed | Esra Balci
Source: Journal of Physical Chemistry and Functional Materials (review, 2023-12-18)
Field: Materials Science — Materials Chemistry

A Review on Comparison between NiTi-Based and Cu-Based Shape Memory Alloys One of the best types of smart materials is Shape Memory Alloys (SMAs), which have more applications in modern technology such as aerospace, automotive, biomedical, civil engineering, robotics, and so on. Among all parts of them NiTi-based, and Cu–based are more focused on because they have some interesting properties that have made them more widely used in modern technology. In this work, the classifications and applications of SMAs according to the different application fields like biomedical, automotive, and aerospace have been reviewed. Besides the characteristic of (NiTi-based, Cu – based) and the comparison between them in many areas such as: In terms of cost, creation, corrosion resistivity, density, and electrical and thermal conductivity were represented. Each of NiTi and Cu-based SMAs has many useful applications and strengths, but they have some limitations. Aerospace ; Shape-memory alloy ; Nickel titanium ; Automotive industry ; Mechanical engineering ; Materials science ; Robotics ; Computer science ; Corrosion ; Thermal conductivity ; Artificial intelligence ; Manufacturing engineering ; Metallurgy ; Engineering ; Aerospace engineering ; Composite material ; Robot Shape Memory Alloy Transformations
Authors: Mei Wang | Zilin Zhang | Guangda Li | Aihua Jing
Source: Micromachines (article, 2023-03-07)
Field: Materials Science — Materials Chemistry

Room-Temperature Self-Healing Conductive Elastomers for Modular Assembly as a Microfluidic Electrochemical Biosensing Platform for the Detection of Colorectal Cancer Exosomes Modular components for rapid assembly of microfluidics must put extra effort into solving leakage and alignment problems between individual modules. Here, we demonstrate a conductive elastomer with self-healing properties and propose a modular microfluidic component configuration system that utilizes self-healing without needing external interfaces as an alternative to the traditional chip form. Specifically, dual dynamic covalent bond crosslinks (imine and borate ester bonds) established between Polyurethane (PU) and 2-Formylbenzeneboronic acid (2-FPBA) are the key to a hard room-temperature self-healing elastomeric substrate PP (PU/2-FPBA). An MG (MXene/GO) conductive network with stable layer spacing (Al-O bonds) obtained from MXene and graphene oxide (GO) by in situ reduction of metals confers photothermal conductivity to PP. One-step liquid molding obtained a standardized modular component library of puzzle shapes from PP and MGPP (MG/PP). The exosomes were used to validate the performance of the constructed microfluidic electrochemical biosensing platform. The device has a wide detection range (50-10<sup>5</sup> particles/μL) and a low limit of detection (LOD) (42 particles/μL) (S/N = 3), providing a disposable, reusable, cost-effective, and rapid analysis platform for quantitative detection of colorectal cancer exosomes. In addition, to our knowledge, this is the first exploration of self-healing conductive elastomers for a modular microfluidic electrochemical biosensing platform. Materials science ; Microfluidics ; Nanotechnology ; Elastomer ; Modular design ; Biosensor ; Conductive polymer ; Adhesive ; Graphene ; Polymer ; Computer science ; Composite material ; Layer (electronics) MXene and MAX Phase Materials ; Advanced Sensor and Energy Harvesting Materials ; Polydiacetylene-based materials and applications
Authors: Valeriy Chigirinsky | Motor Sich JSC, 15 Motorostroiteley Ave., UA-69068 Zaporizhzhya, Ukraine | Yu. S. Kresanov | Irina Volokitina
Source: METALLOFIZIKA I NOVEISHIE TEKHNOLOGII (article, 2023-08-14)
Field: Materials Science — Materials Chemistry

Experimental Study of Energy-Power Parameters of Billet Rolling of Compressor Blades of Aircraft Engines Gas compressor ; Materials science ; Power (physics) ; Mechanical engineering ; Energy (signal processing) ; Automotive engineering ; Nuclear engineering ; Aerospace engineering ; Engineering ; Thermodynamics ; Physics Metal Alloys Wear and Properties ; Engineering Diagnostics and Reliability ; Metallurgy and Material Forming
Authors: Teklebrahan Gebrekrstos Weldemhret | Dong‐Woo Lee | M. N. Prabhakar | Aamir Iqbal | Chong Min Koo | Yong Tae Park | Jung Il Song
Source: Advanced Materials Interfaces (article, 2023-08-07)
Field: Materials Science — Polymers and Plastics

Graphene Nanoplatelet Exoskeleton on Polyurethane Foam to Produce Flame‐Retardant, Piezoresistive, and Electromagnetic Interference Shielding Surfaces Abstract Polyurethane foam (PUF)’s porous structure, light weight, flexibility, and low‐cost properties make it useful in various cutting‐edge technologies. However, time‐consuming, costly, and complicated surface modification methods severely hinder its commercial applications. Herein, an ultrafast, simple, and cost‐effective surface modification method based on the evaporation of a low boiling point solvent to prepare a multifunctional graphene nanoplatelet (GNP)‐decorated PUF (GNP@PUF) is proposed. Due to the passive heat barrier of GNP sheets, the resulting sponge exhibits excellent flame retardancy by reducing the critical fire retardancy metrics, that is, peak heat release rate, total heat release, and total smoke release by 72%, 50%, and 81%, respectively. In addition, GNP@PUF can function as a piezoresistive sensor and electromagnetic interference (EMI)‐shielding material. As a piezoresistive sensor, it exhibits a wide‐compressive pressure (2.4–112 kPa)/strain (5–70%) range and ultra‐fast response/relaxation time (48/35 ms), wide‐stretching strain (5–100%) range, and it can detect minute human motions by being attached to different parts of the human body. Meanwhile, the composite foam displays good absorption‐dominant EMI shielding performance (≈38 dB), possibly due to conductive dissipation and multiple reflections/scattering of EM waves inside the 3D conductive graphene network. This study provides a simple coating technique for developing multifunctional lightweight foam materials. Materials science ; Composite material ; Polyurethane ; Electromagnetic shielding ; Graphene ; Electromagnetic interference ; Piezoresistive effect ; Coating ; Composite number ; Nanotechnology Flame retardant materials and properties ; Electromagnetic wave absorption materials ; Fire dynamics and safety research
Authors: Xiaoyue Yue | Long Fu | Chaoyun Wu | Sheng Xu | Yanhong Bai
Source: Foods (article, 2023-09-26)
Field: Materials Science — Materials Chemistry

Rapid Trace Detection of Sulfite Residue in White Wine Using a Multichannel Colorimetric Nanozyme Sensor As a commonly used food additive, sulfite (SO<sub>3</sub><sup>2-</sup>) is popular with food manufacturers due to the functions of bleaching, sterilizing, and oxidation resistance. However, excess sulfites can pose a threat to human health. Therefore, it is particularly important to achieve rapid and sensitive detection of SO<sub>3</sub><sup>2-</sup>. Herein, a colorimetric sensor was invented for visual, meticulous, and rapid detection of SO<sub>3</sub><sup>2-</sup> based on MIL-53(Fe/Mn). Bimetallic nanozyme MIL-53(Fe/Mn) was prepared by a one-pot hydrothermal reaction. The prepared MIL-53(Fe/Mn) can effectively catalyze the oxidation of colorless TMB to a blue oxidation product (oxTMB). The introduction of SO<sub>3</sub><sup>2-</sup> causes significant discoloration of the reaction system, gradually transitioning from a visible blue color to colorless. Hence, a sensitive colorimetric sensor for SO<sub>3</sub><sup>2-</sup> detection was developed based on the decolorization degree of the detection system. Further, the discoloration was ascribed to the inactivation of nanozyme and the strong reducing ability of SO<sub>3</sub><sup>2-</sup>. Under the optimal experimental conditions, there was a good linear relationship between the absorbance at 652 nm and SO<sub>3</sub><sup>2-</sup> concentration in the linear range of 0.5-6 μg mL<sup>-1</sup> with a limit of detection (LOD) of 0.05 μg mL<sup>-1</sup>. The developed method was successfully applied to the detection of actual samples of white wine with good accuracy and recovery. Compared to traditional methods, this colorimetric sensor produces similar detection results but significantly reduces the detection time. Compared to traditional methods, this colorimetric sensor can not only reduce the detection costs effectively but also help the food industry maintain quality standards. Strong anti-interference capability, simple operation, and low detection limits ensure the excellent performance of the colorimetric sensor in detecting SO<sub>3</sub><sup>2-</sup> in white wine. The combination of a smartphone and a colorimetric analysis application has also greatly facilitated the semi-quantitative, visual on-site detection of SO<sub>3</sub><sup>2-</sup>, which has opened up an application prospect of an MIL-53(Fe/Mn)-based detection platform. Our work has indicated a new direction for the detection of SO<sub>3</sub><sup>2-</sup> and provided important assurance for food safety. Wine ; Sulfite ; White Wine ; Residue (chemistry) ; Colorimetry ; Chemistry ; TRACE (psycholinguistics) ; Chromatography ; Food science ; Inorganic chemistry ; Biochemistry Advanced Nanomaterials in Catalysis ; Advanced biosensing and bioanalysis techniques ; Sulfur Compounds in Biology
Authors: Siyuan Wu | Xuezhong Zhou | Yilong Ai
Source: Journal of Applied Oral Science (article, 2023-01-01)
Field: Materials Science — Biomaterials

Pro-angiogenic photo-crosslinked silk fibroin hydrogel: a potential candidate for repairing alveolar bone defects This study found that photo-crosslinked silk fibroin hydrogel showed pro-angiogenic and inflammation inhibitory abilities. Its photo-crosslinking ability makes it suitable for matching irregular alveolar bone defects. Thus, the photo-crosslinkable silk fibroin-derived hydrogel is a potential candidate for constructing scaffolds for alveolar bone regeneration. Fibroin ; SILK ; Umbilical vein ; Materials science ; Angiogenesis ; Neovascularization ; Chemistry ; Biomedical engineering ; Biophysics ; In vitro ; Composite material ; Biochemistry ; Medicine ; Cancer research ; Biology Silk-based biomaterials and applications ; Periodontal Regeneration and Treatments ; Electrospun Nanofibers in Biomedical Applications
Authors: Shengchen Li | Dan Zhao | Shunli Shi | Fangyu Zhu | Yanping Yang | Shuhua Wang | Shunmin Ding | Chao Chen
Source: Journal of environmental chemical engineering (article, 2023-11-25)
Field: Materials Science — Materials Chemistry

Gas-expanded pore MOF derived Sm/MnOx catalysts enable ultralow-temperature selective catalytic reduction of NOx NOx ; Catalysis ; Selective catalytic reduction ; Adsorption ; Chemical engineering ; Chemistry ; Heterogeneous catalysis ; Selective reduction ; Materials science ; Physical chemistry ; Organic chemistry ; Combustion Catalytic Processes in Materials Science ; Advanced Photocatalysis Techniques ; Luminescence Properties of Advanced Materials
Authors: Yang Zhang | Zhan Qi | Changrui Wang | Jie Gao | Guofu Zhou | Wei Zhao | Jiawen Chen
Source: ACS Applied Materials & Interfaces (article, 2023-10-24)
Field: Chemistry — Organic Chemistry

Unique Polymer-Stabilized Liquid Crystal Structure Prepared by Addition of a Reversible Addition–Fragmentation Chain Transfer Agent Polymer-stabilized liquid crystals (PSLCs) are important electrically switchable materials due to their superior electro-optical properties. Nevertheless, it remains a formidable challenge to balance PSLCs' instant electro-optical performance and long-term durability due to their relatively low polymer content and the related sensitivity to external force. Herein, we demonstrate the possibility of regulating the polymer network structure in PSLCs via reversible addition-fragmentation chain transfer (RAFT) polymerization reactions of acrylate monomers with a chain transfer agent (CTA). By controlling the concentration of CTA and conditions of photopolymerization, the kinetics of the polymerization reaction can be modified. Compared to conventional free-radical (FR) polymerization, the reduced chain growth rate leads to sufficient chain relaxation, reorientation of liquid crystal (LC) directors, and alleviation of shrinkage stresses in the RAFT polymerization process. This in turn produces an ordered polymer network structure in the vertical direction and a uniform distribution in the horizontal plane. As a result, the PSLC network presents increased elasticity with a lower hysteresis effect and greatly improved durability. Our research offers insightful guidance for the fine-tuning of polymer network structures to prepare advanced LC/polymer composite structures with outstanding performances. Materials science ; Chain transfer ; Polymer ; Fragmentation (computing) ; Chemical engineering ; Liquid crystal ; Chain (unit) ; Crystal structure ; Polymer chemistry ; Organic chemistry ; Composite material ; Polymerization ; Radical polymerization ; Optoelectronics Advanced Polymer Synthesis and Characterization ; Liquid Crystal Research Advancements ; Plant Surface Properties and Treatments
Authors: Ilya V. Novikov | Dmitry V. Krasnikov | Vlada S. Shestakova | Iurii P. Rogov | Veronika A. Dmitrieva | Anastasia E. Goldt | Tanja Kallio | Albert G. Nasibulin
Source: Chemical Engineering Journal (article, 2023-10-07)
Field: Materials Science — Materials Chemistry

Boosting CO-based synthesis of single-walled carbon nanotubes with hydrogen Carbon nanotube ; Disproportionation ; Materials science ; Chemical vapor deposition ; Yield (engineering) ; Chemical engineering ; Hydrogen production ; Catalysis ; Nanotube ; Hydrogen ; Nanotechnology ; Chemistry ; Organic chemistry ; Composite material Carbon Nanotubes in Composites ; Chemical and Physical Properties of Materials ; Graphene research and applications