jablonkagroup/rise_ai_scientists huggingface dataset:
Authors: Pradeep Nayak | Ismayil
Source: Energy Technology (article, 2024-08-05)
Field: Materials Science — Electronic, Optical and Magnetic Materials

Development of Eco‐Friendly Chitosan‐Dextran Polyblend Electrolyte for Enhanced Performance in Primary Magnesium Batteries The potential of next‐generation batteries lies in solid biodegradable polymer electrolytes. This research delves into a solid blend polymer electrolyte (SBPE) for magnesium conduction, utilizing a chitosan‐dextran blend matrix doped with magnesium perchlorate (Mg(ClO 4 ) 2 ) salt. The electrolyte films are prepared using a conventional solution casting technique. Through techniques like X‐ray diffraction and Fourier transform infrared spectroscopy, the successful incorporation of Mg(ClO 4 ) 2 into the blend matrix is confirmed. Notably, the SBPE containing 30 wt% of Mg(ClO 4 ) 2 demonstrates the highest ionic conductivity of 6.99 × 10 −4 S cm −1 and a prominent ionic transference number of 0.84. Thermogravimetric analysis is carried out to study thermal stability. Differential scanning calorimetry analysis of the electrolyte systems gives insight into their thermal properties. Additionally, it showcases favorable electrochemical stability of 2.66 V. The oxidation and reduction peaks are observed in the cyclic voltammetry curve of the highest conducting sample. Furthermore, the discharge performance of Mg/(CS + DN + Mg(ClO 4 ) 2 )/cathode cells is explored with varied cathode materials, illustrating the SBPE's potential for magnesium‐ion batteries. This study unveils a sustainable, biodegradable, and economical electrolyte solution for advanced energy storage systems. Environmentally friendly ; Chitosan ; Electrolyte ; Magnesium ; Materials science ; Primary (astronomy) ; Chemical engineering ; Chemistry ; Metallurgy ; Electrode ; Engineering Supercapacitor Materials and Fabrication ; Advanced Battery Materials and Technologies ; Layered Double Hydroxides Synthesis and Applications
Authors: Rong Zhang | Xuan He | T. Y. Fan | Haitao Zhang
Source: Journal of Functional Biomaterials (review, 2024-12-24)
Field: Materials Science — Biomaterials

Nano Delivery System for Atherosclerosis Atherosclerosis, a pathological process propelled by inflammatory mediators and lipids, is a principal contributor to cardiovascular disease incidents. Currently, drug therapy, the primary therapeutic strategy for atherosclerosis, faces challenges such as poor stability and significant side effects. The advent of nanomaterials has garnered considerable attention from scientific researchers. Nanoparticles, such as liposomes and polymeric nanoparticles, have been developed for drug delivery in atherosclerosis treatment. This review will focus on how nanoparticles effectively improve drug safety and efficacy, as well as the continuous development and optimization of nanoparticles of the same material and further explore current challenges and future opportunities in this field. Drug delivery ; Nanotechnology ; Materials science ; Drug ; Nanomaterials ; Liposome ; Nanoparticle ; Medicine ; Pharmacology Nanoparticle-Based Drug Delivery ; Nanoplatforms for cancer theranostics ; Atherosclerosis and Cardiovascular Diseases
Authors: Kewei Song | Kayo Hirose | Kioto Niitsu | Tsubasa Sui | H. Kojima | Toshinori Fujie | Shinjiro Umezu
Source: Discover Nano (article, 2024-03-14)
Field: Materials Science — Polymers and Plastics

A combination of logical judging circuit and water-resistant ultrathin film PEDOT: PSS electrode for noninvasive ECG measurement Heart disease-related deaths have increased in recent decades, with most patients dying of sudden cardiac arrest. In such instances, the effect of regular electrocardiogram (ECG) measurements is minimal. Therefore, long-term ECG monitoring has become increasingly important. In this paper, we report a non-adhesive high accuracy ECG monitoring system that can be used in various scenarios without interfering with daily activities. The ECG ultra-thin film electrode is made by water-resistant material based on poly(3,4-ethylenedioxythiophene) poly(4-styrenesulfonate) (PEDOT: PSS) electrode doped with ethylene glycol (EG) and xylitol, to improve the noise signal caused by sweat. The optimal ratio of the three ingredients of PEDOT: PSS/xylitol/EG was determined experimentally to accommodate the ECG monitoring. By using the proposed selectively closed multi-channel single-lead logic circuit, the noise of ECG signal received from the proposed film electrode can be successfully reduced during broad-area electrode measurements, thus to improve ECG measurement accuracy. PEDOT:PSS ; Electrode ; Materials science ; Noise (video) ; Biomedical engineering ; Computer science ; SIGNAL (programming language) ; Optoelectronics ; Electronic engineering ; Medicine ; Nanotechnology ; Artificial intelligence ; Layer (electronics) ; Chemistry ; Engineering Conducting polymers and applications ; Advanced Sensor and Energy Harvesting Materials ; ECG Monitoring and Analysis
Authors: Hadjer Didouh | Hifsa Khurshid | M. Hadj Méliani | Rami K. Suleiman | Savıour A. Umoren | Izzeddine Sameut Bouhaik
Source: Bioengineering (article, 2024-10-20)
Field: Materials Science — Materials Chemistry

Exploring NRB Biofilm Adhesion and Biocorrosion in Oil/Water Recovery Operations Within Pipelines Microbially influenced corrosion represents a critical challenge to the integrity and durability of carbon steel infrastructure, particularly in environments conducive to biofilm formation by nitrate-reducing bacteria (NRB). This study investigated the impact of NRB biofilms on biocorrosion processes within oil/water recovery operations in Algerian pipelines. A comprehensive suite of experimental and analytical techniques, including microbial analysis, gravimetric methods, and surface characterization, were employed to elucidate the mechanisms of microbially influenced corrosion (MIC). Weight loss measurements revealed that carbon steel samples exposed to injection water exhibited a corrosion rate of 0.0125 mm/year, significantly higher than the 0.0042 mm/year observed in crude oil environments. The microbial analysis demonstrated that injection water harbored an average of (4.4 ± 0.56) × 10<sup>6</sup> cells/cm<sup>2</sup> for sessile cells and (3.1 ± 0.25) × 10<sup>5</sup> CFU/mL for planktonic cells, in stark contrast to crude oil, which contained only (2.4 ± 0.34) × 10<sup>3</sup> cells/cm<sup>2</sup> for sessile cells and (4.5 ± 0.12) × 10<sup>2</sup> CFU/mL for planktonic cells, thereby highlighting the predominant role of injection water in facilitating biofilm formation. Contact angle measurements of injection water on carbon showed 45° ± 2°, compared to 85° ± 4° for crude oil, suggesting an increased hydrophilicity associated with enhanced biofilm adhesion. Scanning electron microscopy further confirmed the presence of thick biofilm clusters and corrosion pits on carbon steel exposed to injection water, while minimal biofilm and corrosion were observed in the crude oil samples. Biofilm ; Corrosion ; Carbon steel ; Gravimetric analysis ; Contact angle ; Water injection (oil production) ; Enhanced oil recovery ; Adhesion ; Environmental scanning electron microscope ; Produced water ; Carbon fibers ; Materials science ; Chemistry ; Scanning electron microscope ; Chemical engineering ; Metallurgy ; Bacteria ; Environmental engineering ; Composite material ; Environmental science ; Petroleum engineering ; Organic chemistry ; Biology Corrosion Behavior and Inhibition ; Building materials and conservation ; Concrete Corrosion and Durability
Authors: G. M. De Luca | Andrea Rubano
Source: Solids (review, 2024-01-16)
Field: Materials Science — Electronic, Optical and Magnetic Materials

Two-Dimensional Ferroelectrics: A Review on Applications and Devices Over the last few years, research activities have seen two-dimensional (2D) materials become protagonists in the field of nanotechnology. In particular, 2D materials characterized by ferroelectric properties are extremely interesting, as they are better suited for the development of miniaturized and high-performing devices. Here, we summarize the recent advances in this field, reviewing the realization of devices based on 2D ferroelectric materials, like FeFET, FTJ, and optoelectronics. The devices are realized with a wide range of material systems, from oxide materials at low dimensions to 2D materials exhibiting van der Waals interactions. We conclude by presenting how these materials could be useful in the field of devices based on magnons or surface acoustic waves. Ferroelectricity ; Nanotechnology ; Realization (probability) ; Materials science ; van der Waals force ; Field (mathematics) ; Engineering physics ; Optoelectronics ; Physics Multiferroics and related materials ; Ferroelectric and Piezoelectric Materials ; 2D Materials and Applications
Authors: Shravankumar Nayak | Deep Joshi | Suchet Nayak
Source: Discover Energy (article, 2024-10-01)
Field: Materials Science — Electronic, Optical and Magnetic Materials

Leveraging supercapacitors to mitigate limitations and enhance the performance of battery energy storage systems: A simulation and experimental validation The importance of supercapacitors has grown significantly in recent times due to several key features. These include their superior power density, faster charging and discharging capabilities, eco-friendly nature, and extended lifespans. Battery Energy Storage Systems (BESS), on the other hand, have become a well-established and essential technology in the field of energy storage. However, BESS still faces challenges such as lower power density, limited cycle stability, and potential chemical hazards. Additionally, batteries perform poorly during transient events (sudden changes in power) due to their larger time constants, which can also shorten their lifespan. By strategically combining supercapacitors with BESS, their combined strengths can optimize battery performance. This study explores the role of supercapacitors in enhancing battery performance through both simulation and experimentation. The results obtained experimentally matched with simulated results. Supercapacitor ; Energy storage ; Battery (electricity) ; Computer science ; Energy (signal processing) ; Reliability engineering ; Systems engineering ; Engineering ; Power (physics) ; Capacitance Supercapacitor Materials and Fabrication ; Advanced Battery Technologies Research ; Electric and Hybrid Vehicle Technologies
Authors: Jacob B. Rodriguez | Kevin Lam | Touhid Bin Anwar | Christopher J. Bardeen
Source: ACS Omega (article, 2024-02-26)
Field: Chemistry — Physical and Theoretical Chemistry

Robust Supercooled Liquid Formation Enables All-Optical Switching Between Liquid and Solid Phases of TEMPO Organic molecules that undergo supercooling can provide the basis for novel stimuli-responsive materials, but the number of such compounds is limited. Results in this paper show that the stable organic radical 2,2,6,6-tetramethyl-1-piperidine-1-oxyl (TEMPO) can form a stable supercooled liquid (SCL). Upon melting and cooling back to room temperature, the TEMPO SCL can persist for months, even after mild physical agitation. Its high vapor pressure can enable crystal growth at remote locations within the sample container over the course of days. Optical, electron paramagnetic resonance, and birefringence measurements show no evidence of new chemical species or partially ordered phases in the supercooled liquid. TEMPO's free radical character permits absorption of visible light that can drive photothermal melting to form the SCL, while a single nanosecond light pulse can initiate recrystallization of the SCL at some later time. This capability enables all-optical switching between the solid and the SCL phases. The physical origin of TEMPO's remarkable stability as an SCL remains an open question, but these results suggest that organic radicals comprise a new class of molecules that can form SCLs with potentially useful properties. Supercooling ; Chemical physics ; Liquid crystal ; Materials science ; Birefringence ; Recrystallization (geology) ; Nanosecond ; Analytical Chemistry (journal) ; Chemistry ; Optoelectronics ; Thermodynamics ; Organic chemistry ; Laser ; Optics Photochemistry and Electron Transfer Studies ; Material Dynamics and Properties ; Liquid Crystal Research Advancements
Authors: Layla Ghazi | K. E. Grant | Anthony Chappaz | Mohammed Danish | Bernhard Peucker‐Ehrenbrink | J. Pett-Ridge
Source: Global Biogeochemical Cycles (article, 2024-10-01)
Field: Chemistry — Inorganic Chemistry

The Global Biogeochemical Cycle of Rhenium Abstract This paper is the first comprehensive synthesis of what is currently known about the different natural and anthropogenic fluxes of rhenium (Re) on Earth's surface. We highlight the significant role of anthropogenic mobilization of Re, which is an important consideration in utilizing Re in the context of a biogeochemical tracer or proxy. The largest natural flux of Re derives from chemical weathering and riverine transport to the ocean (dissolved = 62 × 10 6 g yr −1 and particulate = 5 × 10 6 g yr −1 ). This review reports a new global average [Re] of 16 ± 2 pmol L −1 , or 10 ± 1 pmol L −1 for the inferred pre‐anthropogenic concentration without human impact, for rivers draining to the ocean. Human activity via mining (including secondary mobilization), coal combustion, and petroleum combustion mobilize approximately 560 × 10 6 g yr −1 Re, which is more than any natural flux of Re. There are several poorly constrained fluxes of Re that merit further research, including: submarine groundwater discharge, precipitation (terrestrial and oceanic), magma degassing, and hydrothermal activity. The mechanisms and the main host phases responsible for releasing (sources) or sequestrating (sinks) these fluxes remain poorly understood. This study also highlights the use of dissolved [Re] concentrations as a tracer of oxidation of petrogenic organic carbon, and stable Re isotopes as proxies for changes in global redox conditions. Biogeochemical cycle ; Context (archaeology) ; Geochemical cycle ; Environmental science ; Earth science ; Environmental chemistry ; Weathering ; Submarine groundwater discharge ; Carbon cycle ; Seawater ; Oceanography ; Sediment ; Geology ; Groundwater ; Geochemistry ; Chemistry ; Ecosystem ; Aquifer ; Ecology ; Geomorphology Radioactive element chemistry and processing ; Arsenic contamination and mitigation ; Geochemistry and Elemental Analysis
Authors: Naveen Kumar | Rakshita Dhar | Janwa El‐Maiss | Vihar Georgiev | César Pascual García
Source: IEEE Access (article, 2024-01-01)
Field: Chemistry — Spectroscopy

Discovery of Amphoteric Fingerprints of Amino Acids With Field-Effect Transistors When working with a few molecules, the existing protein sequencing technologies lack the single-site amino acid (AA) precision required to detect abnormalities that escape genome analysis. We offer a new method for identifying AAs and short polypeptides using the signal from the surface potential and capacitance obtained from Field Effect Transistor (FET) sensors. Using a combination of the Site-binding and Gouy-Chapman-Stern (GCS) models, we found the signatures of every single AA and polypeptides. These fingerprints are based on orthogonal features such as the proton dissociation constants of each AA’s charging sites, the dielectric constant, and the effective length. Computer science ; Field (mathematics) ; Mathematics Mass Spectrometry Techniques and Applications ; Mechanical and Optical Resonators ; Force Microscopy Techniques and Applications
Authors: Angela Asor | Abdullah Metebi | Kylie Smith | Kurt Last | E. Strauß | Jinda Fan
Source: Pharmaceuticals (article, 2024-05-25)
Field: Materials Science — Materials Chemistry

Design and Construction of a Radiochemistry Laboratory and cGMP-Compliant Radiopharmacy Facility The establishment of a compliant radiopharmacy facility within a university setting is crucial for supporting fundamental and preclinical studies, as well as for the production of high-quality radiopharmaceuticals for clinical testing in human protocols as part of Investigational New Drug (IND) applications that are reviewed and approved by the U.S. Food and Drug Administration (FDA). This manuscript details the design and construction of a 550 ft<sup>2</sup> facility, which included a radiopharmacy and a radiochemistry laboratory, to support radiopharmaceutical development research and facilitate translational research projects. The facility was designed to meet FDA guidelines for the production of aseptic radiopharmaceuticals in accordance with current good manufacturing practice (cGMP). A modular hard-panel cleanroom was constructed to meet manufacturing classifications set by the International Organization of Standardization (ISO), complete with a gowning room and an anteroom. Two lead-shielded hot cells and two dual-mini hot cells, connected via underground trenches containing shielded conduits, were installed to optimize radioactive material transfer while minimizing personnel radiation exposure. Concrete blocks and lead bricks provided sufficient and cost-effective radiation shielding for the trenches. Air quality was controlled using pre-filters and high-efficiency particulate air (HEPA) filters to meet cleanroom ISO7 (Class 10,000) standards. A laminar-flow biosafety cabinet was installed in the cleanroom for preparation of sterile dose vials. Noteworthy was a laminar-flow insert in the hot cell that provided a shielded laminar-flow sterile environment meeting ISO5 (class 100) standards. The design included the constant control and monitoring of differential air pressures across the cleanroom, anteroom, gowning room, and controlled research space, as well as maintenance of temperature and humidity. The facility was equipped with state-of-the-art equipment for quality control and release testing of radiopharmaceuticals. Administrative controls and standard operating procedures (SOPs) were established to ensure compliance with manufacturing standards and regulatory requirements. Overall, the design and construction of this radiopharmacy facility exemplified a commitment to advancing fundamental, translational, and clinical applications of radiopharmaceutical research within an academic environment. Cleanroom ; HEPA ; Food and drug administration ; Engineering ; Environmental science ; Medicine ; Mechanical engineering ; Nanotechnology ; Materials science ; Risk analysis (engineering) Graphite, nuclear technology, radiation studies ; Radiation Shielding Materials Analysis ; Advanced Radiotherapy Techniques
Authors: Satya Sree Bandaru | Madhavi Kuchana
Source: Journal of Applied Pharmaceutical Science (article, 2024-01-01)
Field: Chemistry — Organic Chemistry

Synthesis, in-vitro antioxidant and anti-inflammatory properties of novel amide derivatives of substituted 2-aminothiophenes and 3,4-dimethoxy cinnamic acid Novel amide derivatives using substituted 2-aminothiophenes (1A–12A) were synthesized by following a suitable procedure. The synthesized compounds were characterized by physical and spectral data. The compounds were screened for in-vitro antioxidant and anti-inflammatory activities with reference to the standard drugs, Ascorbic acid and Ibuprofen respectively. The majority of the compounds showed good antioxidant activity in DPPH and hydroxyl radical scavenging assays. The synthesized compounds were also tested for in-vitro anti-inflammatory activity by protein denaturation and HRBC membrane stabilization methods. Among all, the compounds 2A and 3A showed significant in-vitro anti-inflammatory activity when compared with the standard drug Ibuprofen. Chemistry ; Cinnamic acid ; Amide ; In vitro ; Antioxidant ; Organic chemistry ; Stereochemistry ; Combinatorial chemistry ; Biochemistry Synthesis and biological activity
Authors: Hyung Jun Kim | Changhwan Lee | P. James Schuck | Laura J. Kaufman
Source: Scientific Reports (article, 2024-12-30)
Field: Materials Science — Materials Chemistry

Aggregation pathway complexity in a simple perylene diimide This study characterizes the influence of self-assembly conditions on the aggregation pathway and resulting photophysical properties of one-dimensional aggregates of the simple imide-substituted perylene diimide, N, N'-didodecyl-3,4,9,10-perylenedicarboximide (ddPDI). We show that ddPDI, which has symmetric alkyl chains at the imide positions, assembles into fibers with distinct morphology, emission spectra, and temperature-dependent behavior as a function of preparation conditions. In all conditions explored, aggregates are one-dimensional; however, assembly conditions can bias formation to either J-like or H-like aggregates. Specifically, a solvent phase interfacial (SPI) method yields two types of aggregates with distinct morphology and photophysical properties while a surface and solvent vapor assisted method (SSVA) generates more uniform aggregates with H-dominant behavior. A combined SPI and SSVA approach facilitates the simultaneous generation and in situ characterization of distinct ddPDI assemblies, some of which assemble via seeded growth. Microscopic and spectroscopic imaging unveil the heterogeneity among ddPDI aggregates, each with unique photophysical properties including H-dominant aggregates with a very high degree of molecular alignment and uniformity in intermolecular organization. Overall, this study highlights the pathway complexity in self-assembly of even the simplest PDI molecules, paving the way for utilization of simple PDI aggregates in applications that demand diverse photophysical behavior. Diimide ; Perylene ; Intermolecular force ; Imide ; Aggregation-induced emission ; Molecule ; Materials science ; Solvent ; Chemical physics ; Self-assembly ; Characterization (materials science) ; Chemistry ; Nanotechnology ; Fluorescence ; Polymer chemistry ; Organic chemistry Luminescence and Fluorescent Materials ; Organic Electronics and Photovoltaics ; Molecular Sensors and Ion Detection