jablonkagroup/rise_ai_scientists huggingface dataset:
Authors: Jeongwon Park | Seung Jae Kwak | Su-Min Kang | Saeyoung Oh | Bongki Shin | Gichang Noh | Tae Soo Kim | Changhwan Kim | Hyeonbin Park | Seung Hoon Oh | Woojin Kang | Namwook Hur | Hyun‐Jun Chai | Minsoo Kang | Seongdae Kwon | Jaehyun Lee | Yongjoon Lee | Eoram Moon | Chuqiao Shi | Jun Lou | Won Bo Lee | Joon Young Kwak | Heejun Yang | Taek‐Mo Chung | Taeyong Eom | Joonki Suh | Yimo Han | Hu Young Jeong | YongJoo Kim | Kibum Kang
Source: Nature Communications (article, 2024-03-08)
Field: Materials Science — Materials Chemistry

Area-selective atomic layer deposition on 2D monolayer lateral superlattices The advanced patterning process is the basis of integration technology to realize the development of next-generation high-speed, low-power consumption devices. Recently, area-selective atomic layer deposition (AS-ALD), which allows the direct deposition of target materials on the desired area using a deposition barrier, has emerged as an alternative patterning process. However, the AS-ALD process remains challenging to use for the improvement of patterning resolution and selectivity. In this study, we report a superlattice-based AS-ALD (SAS-ALD) process using a two-dimensional (2D) MoS<sub>2</sub>-MoSe<sub>2</sub> lateral superlattice as a pre-defining template. We achieved a minimum half pitch size of a sub-10 nm scale for the resulting AS-ALD on the 2D superlattice template by controlling the duration time of chemical vapor deposition (CVD) precursors. SAS-ALD introduces a mechanism that enables selectivity through the adsorption and diffusion processes of ALD precursors, distinctly different from conventional AS-ALD method. This technique facilitates selective deposition even on small pattern sizes and is compatible with the use of highly reactive precursors like trimethyl aluminum. Moreover, it allows for the selective deposition of a variety of materials, including Al<sub>2</sub>O<sub>3</sub>, HfO<sub>2</sub>, Ru, Te, and Sb<sub>2</sub>Se<sub>3</sub>. Atomic layer deposition ; Materials science ; Superlattice ; Deposition (geology) ; Chemical vapor deposition ; Nanotechnology ; Monolayer ; Layer (electronics) ; Optoelectronics 2D Materials and Applications ; Semiconductor materials and devices ; Electronic and Structural Properties of Oxides
Authors: Yafei Ding | Qingqing Cheng | Jing Lyu | Zengwei Liu | Ruizhe Yuan | Fengguo Ma | Xuetong Zhang
Source: Advanced Materials (article, 2024-03-19)
Field: Chemistry — Spectroscopy

Visible Microfluidic Deprotonation for Aramid Nanofibers as Building Blocks of Cascade‐Microfluidic‐Processed Colloidal Aerogels Microfluidic deprotonation approach is proposed to realize continuous, scalable, efficient, and uniform production of aramid nanofibers (ANFs) by virtue of large specific surface area, high mixing efficiency, strong heat transfer capacity, narrow residence time distribution, mild laminar-flow process, and amplification-free effect of the microchannel reactor. By means of monitoring capabilities endowed by the high transparency of the microchannel, the kinetic exfoliation process of original aramid particles is in situ observed and the corresponding exfoliation mechanism is established quantificationally. The deprotonated time can be reduced from the traditional several days to 7 min for the final colloidal dispersion due to the synergistic effect between enhanced local shearing/mixing and the rotational motion of aramid particles in microchannel revealed by numerical simulations. Furthermore, the cascade microfluidic processing approach is used to make various ANF colloidal aerogels including aerogel fibers, aerogel films, and 3D-printed aerogel articles. Comprehensive characterizations show that these cascade-microfluidic-processed colloidal aerogels have identical features as those prepared in batch-style mode, revealing the versatile use value of these ANFs. This work achieves significant progress toward continuous and efficient production of ANFs, bringing about appreciable prospects for the practical application of ANF-based materials and providing inspiration for exfoliating any other nano-building blocks. Materials science ; Microchannel ; Aramid ; Microreactor ; Microfluidics ; Aerogel ; Exfoliation joint ; Nanotechnology ; Nanofiber ; Composite material ; Graphene ; Fiber ; Catalysis Aerogels and thermal insulation ; Advanced Sensor and Energy Harvesting Materials ; Surface Modification and Superhydrophobicity
Authors: Karla Nataly Robles | Fatima Tuz Zahra | R. Mu | Todd D. Giorgio
Source: Polymers (review, 2024-10-10)
Field: Materials Science — Biomaterials

Advances in Electrospun Poly(ε-caprolactone)-Based Nanofibrous Scaffolds for Tissue Engineering Tissue engineering has great potential for the restoration of damaged tissue due to injury or disease. During tissue development, scaffolds provide structural support for cell growth. To grow healthy tissue, the principal components of such scaffolds must be biocompatible and nontoxic. Poly(ε-caprolactone) (PCL) is a biopolymer that has been used as a key component of composite scaffolds for tissue engineering applications due to its mechanical strength and biodegradability. However, PCL alone can have low cell adherence and wettability. Blends of biomaterials can be incorporated to achieve synergistic scaffold properties for tissue engineering. Electrospun PCL-based scaffolds consist of single or blended-composition nanofibers and nanofibers with multi-layered internal architectures (i.e., core-shell nanofibers or multi-layered nanofibers). Nanofiber diameter, composition, and mechanical properties, biocompatibility, and drug-loading capacity are among the tunable properties of electrospun PCL-based scaffolds. Scaffold properties including wettability, mechanical strength, and biocompatibility have been further enhanced with scaffold layering, surface modification, and coating techniques. In this article, we review nanofibrous electrospun PCL-based scaffold fabrication and the applications of PCL-based scaffolds in tissue engineering as reported in the recent literature. Biocompatibility ; Nanofiber ; Scaffold ; Materials science ; Tissue engineering ; Caprolactone ; Electrospinning ; Polyester ; Biopolymer ; Surface modification ; Biomaterial ; Biomedical engineering ; Nanotechnology ; Composite material ; Chemical engineering ; Polymer ; Copolymer Electrospun Nanofibers in Biomedical Applications ; biodegradable polymer synthesis and properties ; Tissue Engineering and Regenerative Medicine
Authors: Giacomo Fais | Agnieszka Sidorowicz | Graziella Perra | Debora Dessì | Francesco Loy | Nicola Lai | Paolo Follesa | Roberto Orrù | Giacomo Cao | Alessandro Concas
Source: Marine Drugs (article, 2024-12-04)
Field: Materials Science — Materials Chemistry

Cytotoxic Effects of ZnO and Ag Nanoparticles Synthesized in Microalgae Extracts on PC12 Cells The green synthesis of silver (Ag) and zinc oxide (ZnO) nanoparticles (NPs), as well as Ag/Ag<sub>2</sub>O/ZnO nanocomposites (NCs), using polar and apolar extracts of <i>Chlorella vulgaris</i>, offers a sustainable method for producing nanomaterials with tunable properties. The impact of the synthesis environment and the nanomaterials' characteristics on cytotoxicity was evaluated by examining reactive species production and their effects on mitochondrial bioenergetic functions. Cytotoxicity assays on PC12 cells, a cell line originated from a rat pheochromocytoma, an adrenal medulla tumor, demonstrated that Ag/Ag<sub>2</sub>O NPs synthesized with apolar (Ag/Ag<sub>2</sub>O NPs A) and polar (Ag/Ag<sub>2</sub>O NPs P) extracts exhibited significant cytotoxic effects, primarily driven by Ag<sup>+</sup> ion release and the disruption of mitochondrial function. However, it is more likely the organic content, rather than size, influenced anticancer activity, as commercial Ag NPs, despite smaller crystallite sizes, exhibit less effective activity. ZnO NPs P showed increased reactive oxygen species (ROS) generation, correlated with higher cytotoxicity, while ZnO NPs A produced lower ROS levels, resulting in diminished cytotoxic effects. A comparative analysis revealed significant differences in LD<sub>50</sub> values and toxicity profiles. Differentiated PC12 cells showed higher resistance to ZnO, while AgNPs and Ag/Ag<sub>2</sub>O-based materials had similar effects on both cell types. This study emphasizes the crucial role of the synthesis environment and bioactive compounds from <i>C. vulgaris</i> in modulating nanoparticle surface chemistry, ROS generation, and cytotoxicity. The results provide valuable insights for designing safer and more effective nanomaterials for biomedical applications, especially for targeting tumor-like cells, by exploring the relationships between nanoparticle size, polarity, capping agents, and nanocomposite structures. Cytotoxicity ; Reactive oxygen species ; Nanomaterials ; Silver nanoparticle ; Chemistry ; Nanoparticle ; Nanotoxicology ; Cytotoxic T cell ; Zinc ; Cell culture ; Biophysics ; Nanotechnology ; Biochemistry ; Materials science ; In vitro ; Biology ; Organic chemistry Nanoparticles: synthesis and applications ; Laser-Ablation Synthesis of Nanoparticles ; Nanoplatforms for cancer theranostics
Authors: Xingchen Shen | Niuchang Ouyang | Yuling Huang | Yung‐Hsiang Tung | Chun‐Chuen Yang | Muhammad Faizan | Nicolás Pérez | Ran He | A. V. Sotnikov | Kristin Willa | Chen Wang | Yue Chen | Emmanuel Guilmeau
Source: Advanced Science (article, 2024-03-25)
Field: Materials Science — Materials Chemistry

Amorphous‐Like Ultralow Thermal Transport in Crystalline Argyrodite Cu<sub>7</sub>PS<sub>6</sub> Due to their amorphous-like ultralow lattice thermal conductivity both below and above the superionic phase transition, crystalline Cu- and Ag-based superionic argyrodites have garnered widespread attention as promising thermoelectric materials. However, despite their intriguing properties, quantifying their lattice thermal conductivities and a comprehensive understanding of the microscopic dynamics that drive these extraordinary properties are still lacking. Here, an integrated experimental and theoretical approach is adopted to reveal the presence of Cu-dominated low-energy optical phonons in the Cu-based argyrodite Cu<sub>7</sub>PS<sub>6</sub>. These phonons yield strong acoustic-optical phonon scattering through avoided crossing, enabling ultralow lattice thermal conductivity. The Unified Theory of thermal transport is employed to analyze heat conduction and successfully reproduce the experimental amorphous-like ultralow lattice thermal conductivities, ranging from 0.43 to 0.58 W m<sup>-1</sup> K<sup>-1</sup>, in the temperature range of 100-400 K. The study reveals that the amorphous-like ultralow thermal conductivity of Cu<sub>7</sub>PS<sub>6</sub> stems from a significantly dominant wave-like conduction mechanism. Moreover, the simulations elucidate the wave-like thermal transport mainly results from the contribution of Cu-associated low-energy overlapping optical phonons. This study highlights the crucial role of low-energy and overlapping optical modes in facilitating amorphous-like ultralow thermal transport, providing a thorough understanding of the underlying complex dynamics of argyrodites. Amorphous solid ; Phonon ; Materials science ; Thermal conductivity ; Thermal conduction ; Condensed matter physics ; Thermoelectric materials ; Phonon scattering ; Thermal ; Scattering ; Lattice (music) ; Chemical physics ; Optics ; Thermodynamics ; Crystallography ; Chemistry ; Composite material ; Physics Advanced Thermoelectric Materials and Devices ; Thermal properties of materials ; Optical properties and cooling technologies in crystalline materials
Authors: Xingan Jiang | Xiangping Zhang | Zun‐Yi Deng | Jianming Deng | Xiaolei Wang | Xueyun Wang | Weiyou Yang
Source: Nature Communications (article, 2024-12-30)
Field: Materials Science — Materials Chemistry

Dual-role ion dynamics in ferroionic CuInP2S6: revealing the transition from ferroelectric to ionic switching mechanisms Due to its "ferroionic" nature, CuInP<sub>2</sub>S<sub>6</sub> combines switchable ferroelectric polarization with highly mobile Cu ions, allowing for multiple resistance states. Its conductive mechanism involves ferroelectric switching, ion migration, and corresponding intercoupling, which are highly sensitive to external electric field. Distinguishing the dominant contribution of either ferroelectric switching or ion migration to dynamic conductivity remains a challenge and the conductive mechanism is not clear yet. Here, based on polarization switching analyses and first-principles calculations, this work demonstrates that the Cu ion migration pathways enable the formation of a quadruple-well state, determining the conductive mechanism. Accordingly, it favors the manipulation of Cu ion transport in the intralayer and interlayer in a controlled manner, and makes a transition from ferroelectric-dominated to ion-migration-dominated conductivity, by tailoring the electric fields. This work deepens the understanding of ion migration dynamics and conductive switching in ferroionic systems, which is critical for the advancement of memristor-based neuromorphic computing. Ion ; Ferroelectricity ; Ionic bonding ; Dual (grammatical number) ; Dynamics (music) ; Chemical physics ; Transition (genetics) ; Materials science ; Molecular dynamics ; Biophysics ; Chemistry ; Physics ; Optoelectronics ; Computational chemistry ; Biology ; Dielectric ; Quantum mechanics Solid-state spectroscopy and crystallography ; Photorefractive and Nonlinear Optics ; Crystal Structures and Properties
Authors: Kayan Awawdeh | Marc Buttkewitz | Janina Bahnemann | Ester Segal
Source: Microsystems & Nanoengineering (article, 2024-07-17)
Field: Materials Science — Materials Chemistry

Enhancing the performance of porous silicon biosensors: the interplay of nanostructure design and microfluidic integration This work presents the development and design of aptasensor employing porous silicon (PSi) Fabry‒Pérot thin films that are suitable for use as optical transducers for the detection of lactoferrin (LF), which is a protein biomarker secreted at elevated levels during gastrointestinal (GI) inflammatory disorders such as inflammatory bowel disease and chronic pancreatitis. To overcome the primary limitation associated with PSi biosensors-namely, their relatively poor sensitivity due to issues related to complex mass transfer phenomena and reaction kinetics-we employed two strategic approaches: First, we sought to optimize the porous nanostructure with respect to factors including layer thickness, pore diameter, and capture probe density. Second, we leveraged convection properties by integrating the resulting biosensor into a 3D-printed microfluidic system that also had one of two different micromixer architectures (i.e., staggered herringbone micromixers or microimpellers) embedded. We demonstrated that tailoring the PSi aptasensor significantly improved its performance, achieving a limit of detection (LOD) of 50 nM-which is >1 order of magnitude lower than that achieved using previously-developed biosensors of this type. Moreover, integration into microfluidic systems that incorporated passive and active micromixers further enhanced the aptasensor's sensitivity, achieving an additional reduction in the LOD by yet another order of magnitude. These advancements demonstrate the potential of combining PSi-based optical transducers with microfluidic technology to create sensitive label-free biosensing platforms for the detection of GI inflammatory biomarkers. Nanotechnology ; Microfluidics ; Biosensor ; Nanostructure ; Materials science ; Porous silicon ; Silicon ; Porosity ; Optoelectronics Silicon Nanostructures and Photoluminescence ; Nanowire Synthesis and Applications ; Analytical Chemistry and Sensors
Authors: Ding Luo | Haokang Zhang | Jin Cao | Yuying Yan | Bing Cao
Source: Energy Conversion and Management (article, 2024-05-29)
Field: Materials Science — Materials Chemistry

Innovative design of an annular thermoelectric generator for enhanced automotive waste heat recovery Thermoelectric generator ; Waste heat recovery unit ; Automotive industry ; Thermoelectric effect ; Waste heat ; Waste management ; Generator (circuit theory) ; Engineering ; Environmental science ; Heat recovery ventilation ; Materials science ; Automotive engineering ; Process engineering ; Mechanical engineering ; Heat exchanger ; Physics ; Power (physics) ; Thermodynamics Advanced Thermoelectric Materials and Devices ; Thermal Radiation and Cooling Technologies ; Advanced Thermodynamics and Statistical Mechanics
Authors: Georgia Ladika | Irini F. Strati | Thalia Tsiaka | Dionisis Cavouras | Vassilia J. Sinanoglou
Source: Foods (article, 2024-01-11)
Field: Chemistry — Analytical Chemistry

On the Assessment of Strawberries’ Shelf-Life and Quality, Based on Image Analysis, Physicochemical Methods, and Chemometrics The aim of the present study was to evaluate Marisol strawberries' (<i>Fragaria</i> × <i>ananassa</i>) physicochemical quality and shelf-life during storage, using an integrated analytical approach. More specifically, the research aimed to assess the strawberries' color, texture, and nutritional quality, over an 11-day storage period, employing physicochemical analyses, spectrophotometric assays, Attenuated Total Reflection-Fourier Transform Infrared (ATR-FTIR) spectroscopy, image analysis, and statistical tools. The results revealed significant changes in the outer surface texture and color characteristics, indicating spoilage progression. Physicochemical parameters such as water activity, moisture content, soluble solids, titratable acidity, and ascorbic acid content exhibited significant alterations, influencing the taste profile and freshness perception. Antioxidant and antiradical activities showed fluctuations, suggesting a potential decrease in phenolic content during storage. Moreover, the ATR-FTIR spectra findings confirmed the results regarding the moisture content, soluble solids, and total phenolic content. The integration of physicochemical and image analysis-derived features through a principal component analysis (PCA) enabled the accurate classification of samples based on storage days. Regression analysis, using these features, successfully predicted the storage day with high accuracy. Overall, this integrated analytical approach provided valuable information on the estimation of Marisol strawberries' shelf-life and the prediction of their quality deterioration, contributing to better fruit management and the minimization of discards. Chemometrics ; Titratable acid ; Shelf life ; Chemistry ; Food spoilage ; Ascorbic acid ; Food science ; Principal component analysis ; Water content ; Partial least squares regression ; Mathematics ; Chromatography ; Statistics Spectroscopy and Chemometric Analyses ; Phytochemicals and Antioxidant Activities ; Postharvest Quality and Shelf Life Management
Authors: Ryo Konno | M. Ishikawa | Daisuke Nakajima | Yusuke Endo | Osamu Ohara | Yusuke Kawashima
Source: Molecular & Cellular Proteomics (article, 2024-03-04)
Field: Chemistry — Spectroscopy

Universal Pretreatment Development for Low-input Proteomics Using Lauryl Maltose Neopentyl Glycol In recent years, there has been a growing demand for low-input proteomics, particularly in the context of single-cell proteomics (SCP). In this study, we have developed a lauryl maltose neopentyl glycol (LMNG)-assisted sample preparation (LASP) method. This method effectively reduces protein and peptide loss in samples by incorporating LMNG, a surfactant, into the digestion solution and subsequently removing the LMNG simply via reversed phase solid-phase extraction. The advantage of removing LMNG during sample preparation for general proteomic analysis is the prevention of mass spectrometry (MS) contamination. When we applied the LASP method to the low-input SP3 method and on-bead digestion in coimmunoprecipitation-MS, we observed a significant improvement in the recovery of the digested peptides. Furthermore, we have established a simple and easy sample preparation method for SCP based on the LASP method and identified a median of 1175 proteins from a single HEK239F cell using liquid chromatography (LC)-MS/MS with a throughput of 80 samples per day. Proteomics ; Maltose ; Chemistry ; Chromatography ; Microchemistry ; Biochemistry ; Computational biology ; Biology ; Enzyme Advanced Proteomics Techniques and Applications ; Mass Spectrometry Techniques and Applications ; Advanced Biosensing Techniques and Applications
Authors: Tingting Luo | Yating Ma | Xiaoyu Cui
Source: Polymers (review, 2024-01-08)
Field: Chemistry — Organic Chemistry

Review on Frontal Polymerization Behavior for Thermosetting Resins: Materials, Modeling and Application The traditional curing methods for thermosetting resins are energy-inefficient and environmentally unfriendly. Frontal polymerization (FP) is a self-sustaining process relying on the exothermic heat of polymerization. During FP, the external energy input (such as UV light input or heating) is only required at the initial stage to trigger a localized reaction front. FP is regarded as the rapid and energy-efficient manufacturing of polymers. The precise control of FP is essential for several manufacturing technologies, such as 3D printing, depending on the materials and the coupling of thermal transfer and polymerization. In this review, recent progress on the materials, modeling, and application of FP for thermosetting resins are presented. First, the effects of resin formulations and mixed fillers on FP behavior are discussed. Then, the basic mathematical model and reaction-thermal transfer model of FP are introduced. After that, recent developments in FP-based manufacturing applications are introduced in detail. Finally, this review outlines a roadmap for future research in this field. Thermosetting polymer ; Polymerization ; Exothermic reaction ; Materials science ; Curing (chemistry) ; Polymer ; 3D printing ; Computer science ; Process engineering ; Composite material ; Chemistry ; Organic chemistry ; Engineering Photopolymerization techniques and applications ; Additive Manufacturing and 3D Printing Technologies ; Dental materials and restorations
Authors: Max Rang | Paul J. Kelly
Source: Physical review. B./Physical review. B (preprint, 2024-06-20)
Field: Materials Science — Electronic, Optical and Magnetic Materials

Orbital relaxation length from first-principles scattering calculations The orbital Hall effect generates a current of orbital angular momentum perpendicular to a charge current. Experiments suggest that this orbital current decays on a long length scale that is of the order of the spin-flip diffusion length or longer. We examine this suggestion using first-principles quantum mechanical scattering calculations to study the decay of orbital currents injected from an orbitally polarized lead into thermally disordered bulk systems of selected transition metals. We find that the decay occurs over only a few atomic layers. On this length scale the orbital current may be converted into a spin current if the spin Hall angle is sufficiently large, as for Pt. In Cu, Cr, and V with small spin Hall angles, the conversion into a spin current is negligible in the bulk and significant conversion only occurs at interfaces. Relaxation (psychology) ; Scattering ; Statistical physics ; Physics ; Condensed matter physics ; Computational physics ; Quantum mechanics ; Psychology ; Neuroscience Crystal Structures and Properties ; Facial Trauma and Fracture Management ; X-ray Diffraction in Crystallography