jablonkagroup/rise_ai_scientists huggingface dataset:
Authors: Sanyou Chen | Wan-He Li | Xiaohu Zheng | Pei Yu | Pengfei Wang | Ziting Sun | Yao Xu | Defeng Jiao | Xiangyu Ye | Mingcheng Cai | M. Shen | Mengqi Wang | Qi Zhang | Fei Kong | Ya Wang | Jie He | Haiming Wei | Fazhan Shi | Jiangfeng Du
Source: Proceedings of the National Academy of Sciences (article, 2022-01-26)
Field: Materials Science — Materials Chemistry

Immunomagnetic microscopy of tumor tissues using quantum sensors in diamond Histological imaging is essential for the biomedical research and clinical diagnosis of human cancer. Although optical microscopy provides a standard method, it is a persistent goal to develop new imaging methods for more precise histological examination. Here, we use nitrogen-vacancy centers in diamond as quantum sensors and demonstrate micrometer-resolution immunomagnetic microscopy (IMM) for human tumor tissues. We immunomagnetically labeled cancer biomarkers in tumor tissues with magnetic nanoparticles and imaged them in a 400-nm resolution diamond-based magnetic microscope. There is barely magnetic background in tissues, and the IMM can resist the impact of a light background. The distribution of biomarkers in the high-contrast magnetic images was reconstructed as that of the magnetic moment of magnetic nanoparticles by employing deep-learning algorithms. In the reconstructed magnetic images, the expression intensity of the biomarkers was quantified with the absolute magnetic signal. The IMM has excellent signal stability, and the magnetic signal in our samples had not changed after more than 1.5 y under ambient conditions. Furthermore, we realized multimodal imaging of tumor tissues by combining IMM with hematoxylin-eosin staining, immunohistochemistry, or immunofluorescence microscopy in the same tissue section. Overall, our study provides a different histological method for both molecular mechanism research and accurate diagnosis of human cancer. Microscopy ; Magnetic nanoparticles ; Materials science ; Pathology ; H&E stain ; Nuclear magnetic resonance ; Magnetic force microscope ; Diamond ; Magnetic resonance imaging ; Biomedical engineering ; Staining ; Nanotechnology ; Medicine ; Nanoparticle ; Radiology ; Magnetic field ; Physics ; Magnetization Diamond and Carbon-based Materials Research ; Carbon Nanotubes in Composites ; Advanced Electron Microscopy Techniques and Applications
Authors: Roya Boodaghi Malidarre | İskender Akkurt | Parisa Boodaghi Malidarreh | Seher Arslankaya
Source: Radiation Physics and Chemistry (article, 2022-05-05)
Field: Materials Science — Materials Chemistry

Investigation and ANN-based prediction of the radiation shielding, structural and mechanical properties of the Hydroxyapatite (HAP) bio-composite as artificial bone Electromagnetic shielding ; Monte Carlo method ; Materials science ; Photon ; Composite number ; Brittleness ; Artificial bone ; Composite material ; Electron ; Physics ; Nuclear physics ; Optics ; Mathematics Radiation Shielding Materials Analysis ; Nuclear Physics and Applications ; Advanced X-ray and CT Imaging
Authors: Nikita V. Muravyev | Sergey Vyazovkin
Source: Thermo (article, 2022-11-28)
Field: Materials Science — Materials Chemistry

The Status of Pyrolysis Kinetics Studies by Thermal Analysis: Quality Is Not as Good as It Should and Can Readily Be This paper is a literature survey that focuses on the present development of thermokinetic publications. It demonstrates that in recent years pyrolysis kinetics has turned into a major application of the thermokinetics. Analysis of the respective publications suggests that too often their quality leaves much to be desired because of the poor choices of the kinetic methods and experimental conditions. It is explained that the proper choices can be made by following the recommendations of the International Confederation for Thermal Analysis and Calorimetry (ICTAC). To help with improving the quality of the kinetic results, the ICTAC recommendations are condensed to a few easy to follow principles. These principles focus on selecting proper computational methods, collecting better experimental data, and efficiently reporting the results. The paramount computational principle is to avoid using the methods that evaluate the activation energy and other kinetic parameters from the data measured at a single heating rate. It is shown that the kinetic parameters evaluated by such methods can give rise to striking examples of failure when estimating the thermal stability at ambient temperature. Because of the vital importance of pyrolysis kinetics studies from an ecological and economical perspective, a substantial improvement of their quality is currently needed. Kinetic energy ; Kinetics ; Pyrolysis ; Quality (philosophy) ; Thermodynamics ; Biochemical engineering ; Stability (learning theory) ; Thermal ; Computer science ; Activation energy ; Experimental data ; Process engineering ; Chemistry ; Environmental science ; Materials science ; Mathematics ; Statistics ; Physical chemistry ; Engineering ; Physics ; Organic chemistry Thermal and Kinetic Analysis ; Thermochemical Biomass Conversion Processes ; Fire dynamics and safety research
Authors: Ilse M. Lagerwaard | Pascal Albanese | Andris Jankevics | Richard A. Scheltema
Source: bioRxiv (Cold Spring Harbor Laboratory) (preprint, 2022-04-22)
Field: Chemistry — Spectroscopy

Xlink Mapping and AnalySis (XMAS) - Smooth Integrative Modeling in ChimeraX Abstract Crosslinking mass spectrometry (XL-MS) adds tremendous value to structural biology investigations. Its main strength lies in uncovering structural information in the form of distance constraints between neighboring amino acids of proteins, protein regions and complex samples, which are difficult to assess by other analytical techniques. However, although several approaches have been proposed, interpreting XL-MS data in a structural context has been cumbersome. ChimeraX has gained momentum as a flexible and widely used software package for the visualization of structural data, but is currently lacking functionalities for integration of experimental XL-MS data. Here, we introduce XMAS, a bundle that allows users to load results from several XL-MS search engines directly into ChimeraX and map the information onto protein structures. Besides automatically locating distance constraints on protein structures, XMAS offers the possibility to work with replicate experiments and/or different crosslinkers, and filter this data based on the number of replicates for which a given distance constraint was detected, thereby increasing the data quality. Additionally, we introduce the concept of self-links, which allows easy modeling of homo-dimeric interactions. Its core functionality is extended by the implementation of seamless connections to the HADDOCK suite to streamline otherwise time-consuming tasks in structural modeling pipelines. We demonstrate these key elements of the XMAS bundle by modeling crosslinking data obtained from human fibrin clots. The software is freely available from the ChimeraX toolshed, with an extensive user manual and example datasets. Computer science ; Context (archaeology) ; Software ; Suite ; Software suite ; Bundle ; Data mining ; Visualization ; Computational science ; Theoretical computer science ; Programming language Advanced Proteomics Techniques and Applications ; Metabolomics and Mass Spectrometry Studies ; Mass Spectrometry Techniques and Applications
Authors: Cybelle M. Futalan | Angelo Earvin Sy Choi | Hannah Georgia O. Soriano | Melbourne Klein B. Cabacungan | Jeremiah C. Millare
Source: International Journal of Environmental Research and Public Health (review, 2022-02-25)
Field: Materials Science — Polymers and Plastics

Modification Strategies of Kapok Fiber Composites and Its Application in the Adsorption of Heavy Metal Ions and Dyes from Aqueous Solutions: A Systematic Review Kapok fiber (<i>Ceiba pentandra</i>) belongs to a group of natural fibers that are mainly composed of cellulose, lignin, pectin, and small traces of inorganic compounds. These fibers are lightweight with hollow tubular structure that is easy to process and abundant in nature. Currently, kapok fibers are used in industry as filling material for beddings, upholstery, soft toys, and nonwoven materials. However, kapok fiber has also a potential application in the adsorptive removal of heavy metal ions and dyes from aqueous systems. This study aims to provide a comprehensive review about the recent developments on kapok fiber composites including its chemical properties, wettability, and surface morphology. Effective and innovative kapok fiber composites are analyzed with the help of characterization tools such as scanning electron microscopy, X-ray diffraction, X-ray photoelectron spectroscopy, thermogravimetric analysis, Fourier transform infrared spectroscopy, energy-dispersive X-ray spectroscopy, and Brunauer-Emmett-Teller analysis. Different pre-treatment methods such as alkali and acid pre-treatment, oxidation pre-treatment, and Fenton reaction are discussed. These techniques are applied to enhance the hydrophilicity and to generate rougher fiber surfaces. Moreover, surface modification and synthesis of kapok fiber-based composites and its environmental applications are examined. There are various methods in the fabrication of kapok fiber composites that include chemical modification and polymerization. These procedures allow the kapok fiber composites to have higher adsorption capacities for selective heavy metal and dye removal. Materials science ; Adsorption ; Thermogravimetric analysis ; Aqueous solution ; Fiber ; Fourier transform infrared spectroscopy ; Cellulose fiber ; Metal ions in aqueous solution ; X-ray photoelectron spectroscopy ; Composite material ; Surface modification ; Chemical engineering ; Natural fiber ; Metal ; Chemistry ; Organic chemistry ; Metallurgy Natural Fiber Reinforced Composites ; Nanotechnology research and applications ; Waste Management and Recycling
Authors: Yan‐Ping Jiang | Yiyuan Kang | Jia Liu | Suhan Yin | Zhen-Dong Huang | Longquan Shao
Source: Journal of Nanobiotechnology (review, 2022-06-07)
Field: Materials Science — Materials Chemistry

Nanomaterials alleviating redox stress in neurological diseases: mechanisms and applications Overproduced reactive oxygen and reactive nitrogen species (RONS) in the brain are involved in the pathogenesis of several neurological diseases, such as Alzheimer's disease, Parkinson's disease, traumatic brain injury, and stroke, as they attack neurons and glial cells, triggering cellular redox stress. Neutralizing RONS, and, thus, alleviating redox stress, can slow down or stop the progression of neurological diseases. Currently, an increasing number of studies are applying nanomaterials (NMs) with anti-redox activity and exploring the potential mechanisms involved in redox stress-related neurological diseases. In this review, we summarize the anti-redox mechanisms of NMs, including mimicking natural oxidoreductase activity and inhibiting RONS generation at the source. In addition, we propose several strategies to enhance the anti-redox ability of NMs and highlight the challenges that need to be resolved in their application. In-depth knowledge of the mechanisms and potential application of NMs in alleviating redox stress will help in the exploration of the therapeutic potential of anti-redox stress NMs in neurological diseases. Redox ; Oxidative stress ; Neuroscience ; Reactive oxygen species ; Neurodegeneration ; Disease ; Pathogenesis ; Medicine ; Bioinformatics ; Chemistry ; Biology ; Cell biology ; Immunology ; Biochemistry ; Pathology Advanced Nanomaterials in Catalysis ; Nanoplatforms for cancer theranostics ; Nanocluster Synthesis and Applications
Authors: Chaoyang Wang | Lingshan Ma | Chong‐Chen Wang | Peng Wang | Leonardo Gutiérrez | Weiwei Zheng
Source: Environmental Functional Materials (article, 2022-03-01)
Field: Chemistry — Inorganic Chemistry

Light-response adsorption and desorption behaviors of metal–organic frameworks Metal–organic frameworks (MOFs) are ideal adsorbents because of their porous structure, ultra-large specific surface area, abundant active sites, and specific surface charge. Recently, light-response MOFs have received considerable research interests regarding their potential applications in environmental remediation, medical treatment, and artificial intelligence. This review systematically summarizes the recent progress of light-response MOFs and MOF-based composites for light-response adsorption/desorption. The fabrication strategies of light-response MOFs, including in situ synthesis, post-synthesis modification, and introduction of guest molecules, are presented. The mechanisms of light-induced structural change and light-responsive adsorption/desorption are summarized. The prospects for further development of light-response MOFs are discussed. The facile regeneration of light-response MOF-based adsorbents by light irradiation is highly promising for energy saving, environmental friendliness, and sustainability. Adsorption ; Materials science ; Metal-organic framework ; Desorption ; Nanotechnology ; Porosity ; Chemical engineering ; Chemistry ; Composite material ; Organic chemistry Metal-Organic Frameworks: Synthesis and Applications ; Advanced Photocatalysis Techniques ; Advanced Nanomaterials in Catalysis
Authors: S. Hajian | Dinesh Maddipatla | Binu B. Narakathu | Massood Z. Atashbar
Source: Frontiers in Sensors (review, 2022-10-27)
Field: Materials Science — Materials Chemistry

MXene-based flexible sensors: A review MXenes are an emerging family of two-dimensional (2D) materials which exhibits unique characteristics such as metal-like thermal and electrical conductivity, huge surface area, biocompatibility, low toxicity, excellent electrochemical performance, remarkable chemical stability, antibacterial activity, and hydrophilicity. Initially, MXene materials were synthesized by selectively etching metal layers from MAX phases, layered transition metal carbides, and carbonitrides with hydrofluoric acid. Multiple novel synthesis methods have since been developed for the creation of MXenes with improved surface chemistries using non-aqueous etchants, molten salts, fluoride salts, and various acid halogens. Due to the promising potential of MXenes, they have emerged as attractive 2D materials with applications in various fields such as energy storage, sensing, and biomedical. This review provides a comprehensive overview of MXenes and discusses the synthesis and properties of MXenes, including the methods of etching, delamination, and modification/functionalization, as well as the electrical properties of MXenes. Following this, the recent advances in the development of various MXene-based sensors are presented. Finally, the challenges and opportunities for future research on the development of MXenes-based sensors are discussed. MXenes ; Materials science ; Surface modification ; Nanotechnology ; Biocompatibility ; Chemical engineering ; Metallurgy MXene and MAX Phase Materials ; 2D Materials and Applications ; Advanced Sensor and Energy Harvesting Materials
Authors: Jessi E. S. van der Hoeven | Harith Gurunarayanan | Maarten Bransen | D. A. Matthijs de Winter | Petra E. de Jongh | Alfons van Blaaderen
Source: Advanced Functional Materials (article, 2022-04-10)
Field: Materials Science — Electronic, Optical and Magnetic Materials

Silica‐Coated Gold Nanorod Supraparticles: A Tunable Platform for Surface Enhanced Raman Spectroscopy Abstract Plasmonic nanoparticle assemblies are promising functional materials for surface‐enhanced Raman spectroscopy (SERS). Gold nanorod (AuNR) assemblies are of particular interest due to the large, shape‐induced local field enhancement and the tunable surface plasmon resonance of the AuNRs. Designing the optimal assembly structure for SERS, however, is challenging and requires a delicate balance between the interparticle distance, porosity, and wetting of the assembly. Here, a new type of functional assemblies–called supraparticles–fabricated through the solvent‐evaporation driven assembly of silica‐coated gold nanorods into spherical ensembles, in which the plasmonic coupling and the mass transport is tuned through the thickness and porosity of the silica shells are introduced. Etching of the AuNRs allowed fine‐tuning of the plasmonic response to the laser excitation wavelength. Using a correlative SERS‐electron microscopy approach, it is shown that all supraparticles successfully amplified the Raman signal of the crystal violet probe molecules, and that the Raman signal strongly increased when decreasing the silica shell thickness from 35 to 3 nm, provided that the supraparticles have a sufficiently high porosity. The supraparticles introduced in this study present a novel class of materials for sensing, and open up a wide parameter space to optimize their performance. Materials science ; Nanorod ; Raman spectroscopy ; Plasmon ; Surface-enhanced Raman spectroscopy ; Nanotechnology ; Colloidal gold ; Porosity ; Surface plasmon resonance ; Nanoparticle ; Raman scattering ; Optoelectronics ; Optics ; Composite material Gold and Silver Nanoparticles Synthesis and Applications ; Nanocluster Synthesis and Applications ; Biosensors and Analytical Detection
Authors: Chloe F. Doiron | Igal Brener | Alexander Cerjan
Source: Nature Communications (article, 2022-12-07)
Field: Materials Science — Electronic, Optical and Magnetic Materials

Realizing symmetry-guaranteed pairs of bound states in the continuum in metasurfaces Bound states in the continuum (BICs) have received significant attention for their ability to enhance light-matter interactions across a wide range of systems, including lasers, sensors, and frequency mixers. However, many applications require degenerate or nearly degenerate high-quality factor (Q) modes, such as spontaneous parametric down conversion, non-linear four-wave mixing, and intra-cavity difference frequency mixing for terahertz generation. Previously, degenerate pairs of bound states in the continuum (BICs) have been created by fine-tuning the structure to engineer the degeneracy, yielding BICs that respond unpredictably to structure imperfections and material variations. Instead, using a group theoretic approach, we present a design paradigm based on six-fold rotational symmetry (C<sub>6</sub>) for creating degenerate pairs of symmetry-protected BICs, whose frequency splitting and Q-factors can be independently and predictably controlled, yielding a complete design phase space. Using a combination of resonator and lattice deformations in silicon metasurfaces, we experimentally demonstrate the ability to tune mode spacing from 2 nm to 110 nm while simultaneously controlling Q-factor. Degenerate energy levels ; Resonator ; Physics ; Degeneracy (biology) ; Terahertz radiation ; Lattice (music) ; Bound state ; Parameter space ; Mixing (physics) ; Parametric statistics ; Rotational symmetry ; Symmetry (geometry) ; Quantum mechanics ; Optics ; Mathematics ; Acoustics Metamaterials and Metasurfaces Applications ; Plasmonic and Surface Plasmon Research ; Photonic and Optical Devices
Authors: Gerd Buntkowsky | Franziska Theiß | Jonas Lins | Yuliya A. Miloslavina | Laura Wienands | Alexey S. Kiryutin | Alexandra V. Yurkovskaya
Source: RSC Advances (review, 2022-01-01)
Field: Chemistry — Spectroscopy

Recent advances in the application of parahydrogen in catalysis and biochemistry Nuclear Magnetic Resonance (NMR) spectroscopy and Magnetic Resonance Imaging (MRI) are analytical and diagnostic tools that are essential for a very broad field of applications, ranging from chemical analytics, to non-destructive testing of materials and the investigation of molecular dynamics, to <i>in vivo</i> medical diagnostics and drug research. One of the major challenges in their application to many problems is the inherent low sensitivity of magnetic resonance, which results from the small energy-differences of the nuclear spin-states. At thermal equilibrium at room temperature the normalized population difference of the spin-states, called the Boltzmann polarization, is only on the order of 10<sup>-5</sup>. Parahydrogen induced polarization (PHIP) is an efficient and cost-effective hyperpolarization method, which has widespread applications in Chemistry, Physics, Biochemistry, Biophysics, and Medical Imaging. PHIP creates its signal-enhancements by means of a reversible (SABRE) or irreversible (classic PHIP) chemical reaction between the parahydrogen, a catalyst, and a substrate. Here, we first give a short overview about parahydrogen-based hyperpolarization techniques and then review the current literature on method developments and applications of various flavors of the PHIP experiment. Spin isomers of hydrogen ; Hyperpolarization (physics) ; Chemistry ; Combinatorial chemistry ; Nanotechnology ; Nuclear magnetic resonance spectroscopy ; Materials science ; Organic chemistry ; Hydrogen Advanced NMR Techniques and Applications ; Solid-state spectroscopy and crystallography ; Atomic and Subatomic Physics Research
Authors: Jerald Y. Q. Teo | Albert Ong | Tristan Tsai Yuan Tan | Xin Li | Xian Jun Loh | Jason Y. C. Lim
Source: Green Chemistry (article, 2022-01-01)
Field: Chemistry — Inorganic Chemistry

Materials from waste plastics for CO<sub>2</sub>capture and utilisation Herein, we consider the possibility and future prospects of using waste plastic feedstock as an overlooked resource to develop polymeric adsorbents, metal–organic frameworks and porous carbon materials for CO 2 capture and utilization. Raw material ; Waste management ; Plastic waste ; Carbon fibers ; Resource recovery ; Metal-organic framework ; Adsorption ; Materials science ; Porosity ; Resource (disambiguation) ; Environmental science ; Chemistry ; Organic chemistry ; Engineering ; Computer science ; Wastewater ; Composite material Metal-Organic Frameworks: Synthesis and Applications ; Carbon Dioxide Capture Technologies ; Carbon dioxide utilization in catalysis
Authors: Lilian Guillemeney | Laurent Lermusiaux | Guillaume Landaburu | Benoît Wagnon | Benjamin Abécassis
Source: Communications Chemistry (review, 2022-01-12)
Field: Materials Science — Materials Chemistry

Curvature and self-assembly of semi-conducting nanoplatelets Semi-conducting nanoplatelets are two-dimensional nanoparticles whose thickness is in the nanometer range and controlled at the atomic level. They have come up as a new category of nanomaterial with promising optical properties due to the efficient confinement of the exciton in the thickness direction. In this perspective, we first describe the various conformations of these 2D nanoparticles which display a variety of bent and curved geometries and present experimental evidences linking their curvature to the ligand-induced surface stress. We then focus on the assembly of nanoplatelets into superlattices to harness the particularly efficient energy transfer between them, and discuss different approaches that allow for directional control and positioning in large scale assemblies. We emphasize on the fundamental aspects of the assembly at the colloidal scale in which ligand-induced forces and kinetic effects play a dominant role. Finally, we highlight the collective properties that can be studied when a fine control over the assembly of nanoplatelets is achieved. Curvature ; Materials science ; Nanotechnology ; Geometry ; Mathematics Quantum Dots Synthesis And Properties ; Gold and Silver Nanoparticles Synthesis and Applications ; Molecular Junctions and Nanostructures