jablonkagroup/rise_ai_scientists huggingface dataset:
Authors: Jin Qin | Yuzhi Shi | Shibin Jiang | Yusong Gao | Shupei Yao | Zhanshan Wang | Xinbin Cheng | Din Ping Tsai | Wu Zhang | Weiming Zhu
Source: Advanced Materials (article, 2024-10-15)
Field: Materials Science — Electronic, Optical and Magnetic Materials

Ultrabroadband and &gt;93% Microwave Absorption Enabled by “Doped” Water Meta‐Atom Lattice with Subwavelength Thickness Perfect microwave absorbers, which absorb electromagnetic waves completely, play pivotal roles in electromagnetic shielding, and stealth technologies. Existing microwave absorber technologies rely on either electromagnetic properties of absorptive materials, the resonance behavior of meta-atoms, or a combination of both. So far, achieving simultaneous broadband absorption, high efficiency, and compact sizes remains a great challenge. Inspired by atomic doping techniques employed in conventional optical materials to broaden spectral bandwidths, a single-layer microfluidic metasurface microwave absorber is proposed with the assembly of two distinct types of water meta-atoms. By manipulating electromagnetic resonances of these water meta-atoms, the metasurface maintains impedance matching over a broad working range. A microwave absorber design with a thickness equivalent to 0.2 times the central wavelength is showcased, measuring over 93% absorption across both K and Ka bands (17.5-40.0 GHz). The results highlight unprecedented superiorities of microwave absorbers based on a 2D doped water meta-atom lattice when compared to previously reported metasurface absorbers utilizing identical meta-atoms. This absorber has advantages including small thickness, broad bandwidth, and cost-effectiveness, making it promising for applications in electromagnetic shielding, camouflage, and multi-spectral stealth. Microwave ; Materials science ; Optoelectronics ; Electromagnetic radiation ; Electromagnetic shielding ; Absorption (acoustics) ; Broadband ; Doping ; Bandwidth (computing) ; Atom (system on chip) ; Wavelength ; Optics ; Physics ; Telecommunications ; Computer science Metamaterials and Metasurfaces Applications ; Advanced Antenna and Metasurface Technologies ; Antenna Design and Analysis
Authors: Isabelly Silva Amorim | Danyelly Silva Amorim | Helena Teixeira Godoy | Lilian Regina Barros Mariutti | Renan Campos Chisté | Rosinelson da Silva Pena | Stanislau Bogusz | Josiane Freitas Chim
Source: Heliyon (review, 2024-01-01)
Field: Chemistry — Inorganic Chemistry

Amazonian palm tree fruits: From nutritional value to diversity of new food products The rapid growth of the world population has increased the demand for new food sources, constituting a major challenge concerning the maximum use of existing food resources. The fruits of Amazonian palm trees have excellent nutritional composition and bioactive compounds. This review highlights four fruits of Amazonian palm trees that are still little explored by the food industry: açai (<i>Euterpe oleracea</i>), pupunha (<i>Bactris gasipaes</i>), buriti (<i>Mauritia flexuosa</i>), and tucumã (<i>Astrocaryum aculeatum</i>). This paper aims to inspire new ideas for researching and developing products for the food industry. It also explores the impacts of Amazonian palm fruits on health, highlighting their role in disease prevention through their nutritional effects. Amazonian ; Amazon rainforest ; Palm ; Agroforestry ; Population ; Food industry ; Geography ; Biology ; Biotechnology ; Food science ; Ecology ; Environmental health ; Medicine Coconut Research and Applications ; Agricultural and Food Sciences ; African Botany and Ecology Studies
Authors: Xuyang Bai | Shurun Tan | Said Mikki | Er‐Ping Li | Tie Jun Cui
Source: Electromagnetic waves (article, 2024-01-01)
Field: Materials Science — Electronic, Optical and Magnetic Materials

Information-theoretic Measures for Reconfigurable Metasurface-enabled Direct Digital Modulation Systems: An Electromagnetic Perspective The fusion of electromagnetic (EM) waves and information theory in wireless and waveguide communication technologies has enjoyed a remarkable revival during the last few years. In particular, unlike traditional transceiver systems, the recently proposed information metasurface system directly links the controllable binary array sources with the scattered EM waves, making the combination of EM and information theories highly desirable and natural. Moreover, a traditional linear channel matrix cannot be directly used for such scattering reconfigurability enabled communication system, making the information characterization of such system a great challenge. In this paper, EM information characteristics of a direct digital modulation (DDM) system enabled by programmable information metasurface, also known as reconfigurable intelligent surface (RIS), are analyzed, in which RIS is used as a modulator of the illuminating field, while the scattered far-field amplitudes are measured and effectively treated as the received quantities. The posterior probability for a specific source coding pattern, conditioned over a given measured scattering fields, is obtained through the Bayesian analysis technique, from which the average mutual information (AMI) is obtained to estimate the RIS observation capability along any particular direction. The averaged receiver mutual information (ARMI) is then introduced to characterize the generated field correlation structures along different observation directions. Based on ARMI, the joint observation capability is also analyzed. Furthermore, the suggested techniques are employed in a noisy environment, and a code selection scheme is put forth to achieve efficient information transmission. The proposed configuration is validated through a simulated experiment. As a comprehensive evaluation of the system's performance, the channel capacity of the system is derived, and a set of relevant influencing factors are identified and analyzed from four different perspectives: 1) the observation direction, 2) the size of RIS, 3) potential joint observations in multiple directions, and 4) the noise level. The proposed method, together with the various related performance measure metrics introduced therein, are expected to provide the research community with guidelines for analyzing and designing the current and future RIS-based communication systems, which can also be extended to other aspects in the growing field of the EM information theory. Perspective (graphical) ; Modulation (music) ; Electronic engineering ; Computer science ; Physics ; Engineering ; Acoustics ; Artificial intelligence Metamaterials and Metasurfaces Applications ; Advanced Antenna and Metasurface Technologies ; Advanced Wireless Communication Technologies
Authors: Tiantian Lv | Fan Wu | Zhuozhen Zhang | Zongxing Liu | Yanan Zhao | Long Yu | Jiarong Zhang | Chunna Yu | Chang Zhao | Guangjian Xing
Source: ACS Applied Nano Materials (article, 2024-03-25)
Field: Materials Science — Materials Chemistry

TiVCT<sub>X</sub> MXene/Graphene Nanosheet-Based Aerogels for Removal of Organic Contaminants from Wastewater Efficient removal of broad-spectrum organic pollutants is crucial in wastewater treatment. This research focuses on the synthesis of three-dimensional TiVCTX MXene/graphene nanosheet-based aerogels, known as TiVCTX/GAs, using a straightforward hydrothermal self-assembly method, followed by freeze-drying. The integration of bimetallic MXene and graphene aerogel in TiVCTX/GAs results in an impressive broad-spectrum removal capability for multiple organic contaminants from wastewater. TiVCTX/GAs exhibit effective adsorption of various dyes and drugs, with adsorption capacities reaching 319.67, 303.45, 229.97, 217.87, and 283.38 mg·g–1 for methylene blue, rhodamine B, Congo red, methyl orange, and tetracycline hydrochloride, respectively. To fully comprehend the adsorption mechanism of TiVCTX/GAs, various models for the adsorption process were examined including kinetic, isothermal, and thermodynamic models. The adsorption process aligns with the Langmuir model and the pseudo-second-order kinetic model. The intraparticle diffusion model suggests that intraparticle diffusion is not the only rate-controlling step. Moreover, thermodynamic analysis indicates that the adsorption process by TiVCTX/GAs is spontaneous. These aerogels also effectively remove common oils and organic solvents from wastewater through absorption treatment with a substantial absorption capacity ranging from 40 to 90 g·g–1. Particularly, for high-viscosity oils that are challenging to absorb, TiVCTX/GAs demonstrate remarkable absorption ability by reducing their viscosity through photothermal heating. Overall, TiVCTX/GAs show great promise as versatile adsorbents and absorbers for efficiently and comprehensively removing various organic contaminants from wastewater. Nanosheet ; Wastewater ; Graphene ; Materials science ; Contamination ; Chemical engineering ; Aerogel ; Nanotechnology ; Environmental science ; Environmental engineering MXene and MAX Phase Materials ; Advanced Photocatalysis Techniques ; Nanomaterials for catalytic reactions
Authors: Cristina Valencia‐Sullca | Ghazi Ben Messaoud | Laura Sánchez‐González | Elmira Arab‐Tehrany | María Vargas | Lorena Atarés | Amparo Chiralt
Source: Food Hydrocolloids (article, 2024-01-28)
Field: Materials Science — Biomaterials

Chitosan films containing encapsulated eugenol in alginate microspheres Chitosan ; Eugenol ; Chemistry ; Antimicrobial ; Acetic acid ; Nuclear chemistry ; Chemical engineering ; Organic chemistry Nanocomposite Films for Food Packaging ; Essential Oils and Antimicrobial Activity ; Microencapsulation and Drying Processes
Authors: Felipe e Silva | Vera Maria Martins Salim | Thenner S. Rodrigues
Source: AppliedChem (review, 2024-03-13)
Field: Materials Science — Electronic, Optical and Magnetic Materials

Controlled Nickel Nanoparticles: A Review on How Parameters of Synthesis Can Modulate Their Features and Properties Nickel nanoparticles have wide-ranging applications in diverse fields, including electronics, catalysis, and biomedicine. The unique properties of these nanoparticles depend on their physical and chemical attributes. Consequently, there is a growing interest in understanding the performance relationships through a nuanced comprehension of their controlled synthesis. This review explores the advancements related to precisely defined nickel nanoparticles, with a specific focus on unraveling the connections between performance and their physical/chemical characteristics. The emphasis is on elucidating how manipulating synthetic parameters, such as precursor concentration, reductant agent properties, temperature, time, and the presence of stabilizing agents, can provide additional avenues for refining the performance in terms of size and morphology. Through the analysis of each variable, we illustrate the methodology for synthesizing well-controlled nickel nanoparticles, showcasing the ability to exert precision over their composition, size, and surface morphology. Nanoparticle ; Biomedicine ; Nanotechnology ; Nickel ; Materials science ; Bioinformatics ; Metallurgy Gold and Silver Nanoparticles Synthesis and Applications ; Nanomaterials for catalytic reactions ; Copper-based nanomaterials and applications
Authors: Kamal Bhatt | Alafate Adili | Andrew Tran | Kamal M. Elmallah | Ion Ghiviriga | Daniel Seidel
Source: Journal of the American Chemical Society (article, 2024-09-12)
Field: Chemistry — Organic Chemistry

Photocatalytic Decarboxylative Alkylation of Cyclic Imine–BF<sub>3</sub> Complexes: A Modular Route to Functionalized Azacycles Alkyl radicals generated via an acridine photocatalyzed decarboxylation reaction of feedstock carboxylic acids engage with a range of cyclic imine-BF<sub>3</sub> complexes to provide α-functionalized azacycles in an operationally simple process. A three-component variant of this transformation incorporating [1.1.1]propellane as an additional reaction partner enables the synthesis of valuable bicyclopentane (BCP)-containing azacycles. Reactions exhibit good functional group compatibility, enabling late-stage modification of complex bioactive molecules. Chemistry ; Alkylation ; Imine ; Photocatalysis ; Modular design ; Organic chemistry ; Catalysis Catalytic C–H Functionalization Methods ; Radical Photochemical Reactions ; Synthesis and Catalytic Reactions
Authors: Felix Strieth‐Kalthoff | Sara Szymkuć | Karol Molga | Alán Aspuru‐Guzik | Frank Glorius | Bartosz A. Grzybowski
Source: Journal of the American Chemical Society (article, 2024-04-10)
Field: Materials Science — Materials Chemistry

Artificial Intelligence for Retrosynthetic Planning Needs Both Data and Expert Knowledge Rapid advancements in artificial intelligence (AI) have enabled breakthroughs across many scientific disciplines. In organic chemistry, the challenge of planning complex multistep chemical syntheses should conceptually be well-suited for AI. Yet, the development of AI synthesis planners trained solely on reaction-example-data has stagnated and is not on par with the performance of "hybrid" algorithms combining AI with expert knowledge. This Perspective examines possible causes of these shortcomings, extending beyond the established reasoning of insufficient quantities of reaction data. Drawing attention to the intricacies and data biases that are specific to the domain of synthetic chemistry, we advocate augmenting the unique capabilities of AI with the knowledge base and the reasoning strategies of domain experts. By actively involving synthetic chemists, who are the end users of any synthesis planning software, into the development process, we envision to bridge the gap between computer algorithms and the intricate nature of chemical synthesis. Retrosynthetic analysis ; Bridge (graph theory) ; Artificial intelligence ; Domain (mathematical analysis) ; Expert system ; Domain knowledge ; Applications of artificial intelligence ; Chemistry ; Knowledge base ; Process (computing) ; Computer science ; Perspective (graphical) ; Data science ; Management science ; Engineering Machine Learning in Materials Science ; Computational Drug Discovery Methods ; Catalysis and Oxidation Reactions
Authors: An Li | Qi Wang | Ruirun Chen | Xin Ding | Yanqing Su | Hengzhi Fu
Source: Materials Today Communications (review, 2024-11-28)
Field: Materials Science — Materials Chemistry

Application of alloying for enhancing the corrosion resistance of titanium alloys: A review Materials science ; Corrosion ; Metallurgy ; Titanium ; Titanium alloy ; Alloy Titanium Alloys Microstructure and Properties ; Welding Techniques and Residual Stresses ; Hydrogen embrittlement and corrosion behaviors in metals
Authors: Lin Lu | Bo Wu | Xinyuan He | Fen Zhao | Xing Feng | Dong Wang | Zijie Qiu | Ting Han | Zheng Zhao | Ben Zhong Tang
Source: Nature Communications (article, 2024-05-31)
Field: Materials Science — Materials Chemistry

Multiple photofluorochromic luminogens via catalyst-free alkene oxidative cleavage photoreaction for dynamic 4D codes encryption Controllable photofluorochromic systems with high contrast and multicolor in both solutions and solid states are ideal candidates for the development of dynamic artificial intelligence. However, it is still challenging to realize multiple photochromism within one single molecule, not to mention good controllability. Herein, we report an aggregation-induced emission luminogen TPE-2MO2NT that undergoes oxidation cleavage upon light irradiation and is accompanied by tunable multicolor emission from orange to blue with time-dependence. The photocleavage mechanism revealed that the self-generation of reactive oxidants driving the catalyst-free oxidative cleavage process. A comprehensive analysis of TPE-2MO2NT and other comparative molecules demonstrates that the TPE-2MO2NT molecular scaffold can be easily modified and extended. Further, the multicolor microenvironmental controllability of TPE-2MO2NT photoreaction within polymer matrices enables the fabrication of dynamic fluorescence images and 4D information codes, providing strategies for advanced controllable information encryption. Alkene ; Catalysis ; Oxidative cleavage ; Chemistry ; Oxidative phosphorylation ; Cleavage (geology) ; Photochemistry ; Combinatorial chemistry ; Materials science ; Organic chemistry ; Biochemistry Photochromic and Fluorescence Chemistry ; Photoreceptor and optogenetics research ; Luminescence and Fluorescent Materials
Authors: Qing Shen | Shitong Wang | Honghai Wang | Jingjing Liang | Qiaoling Zhao | Keyun Cheng | Muhammad Imran | Jing Xue | Zhu-Jun Mao
Source: Comprehensive Reviews in Food Science and Food Safety (review, 2024-06-25)
Field: Chemistry — Spectroscopy

Revolutionizing food science with mass spectrometry imaging: A comprehensive review of applications and challenges Food science encounters increasing complexity and challenges, necessitating more efficient, accurate, and sensitive analytical techniques. Mass spectrometry imaging (MSI) emerges as a revolutionary tool, offering more molecular-level insights. This review delves into MSI's applications and challenges in food science. It introduces MSI principles and instruments such as matrix-assisted laser desorption/ionization, desorption electrospray ionization, secondary ion mass spectrometry, and laser ablation inductively coupled plasma mass spectrometry, highlighting their application in chemical composition analysis, variety identification, authenticity assessment, endogenous substance, exogenous contaminant and residue analysis, quality control, and process monitoring in food processing and food storage. Despite its potential, MSI faces hurdles such as the complexity and cost of instrumentation, complexity in sample preparation, limited analytical capabilities, and lack of standardization of MSI for food samples. While MSI has a wide range of applications in food analysis and can provide more comprehensive and accurate analytical results, challenges persist, demanding further research and solutions. The future development directions include miniaturization of imaging devices, high-resolution and high-speed MSI, multiomics and multimodal data fusion, as well as the application of data analysis and artificial intelligence. These findings and conclusions provide valuable references and insights for the field of food science and offer theoretical and methodological support for further research and practice in food science. Mass spectrometry ; Mass spectrometry imaging ; Data science ; Computer science ; Chemistry ; Nanotechnology ; Biochemical engineering ; Materials science ; Chromatography ; Engineering Mass Spectrometry Techniques and Applications ; Ion-surface interactions and analysis ; Analytical chemistry methods development
Authors: Boyang Hu | Hong Guo | Ting Li | Jiaye Li | Min Cao | Weiyan Qi | Xinglin Li | Baoan Li
Source: Chemical Engineering Journal (article, 2024-02-02)
Field: Materials Science — Electronic, Optical and Magnetic Materials

Millefeuille-like phase change composite with multi-level oriented architecture for efficient thermal management and electromagnetic interference shielding Materials science ; Graphene ; Microelectronics ; Optoelectronics ; Electromagnetic shielding ; Electromagnetic interference ; Nanotechnology ; Phase-change material ; Composite material ; Thermal ; Electrical engineering ; Engineering Electromagnetic wave absorption materials ; Flame retardant materials and properties ; Thermal properties of materials
Authors: Wei Xia | Zhijie Zhou | Liangzheng Sheng | Lihang Chen | Fuxing Shen | Zheng Fang | Zhiguo Zhang | Qiwei Yang | Qilong Ren | Zongbi Bao
Source: Nature Communications (article, 2024-10-08)
Field: Chemistry — Inorganic Chemistry

Bioinspired recognition in metal-organic frameworks enabling precise sieving separation of fluorinated propylene and propane mixtures The separation of fluorinated propane/propylene mixtures remains a major challenge in the electronics industry. Inspired by biological ion channels with negatively charged inner walls that allow selective transport of cations, we presented a series of formic acid-based metal-organic frameworks (MFA) featuring biomimetic multi-hydrogen confined cavities. These MFA materials, especially the cobalt formate (CoFA), exhibit specific recognition of hexafluoropropylene (C<sub>3</sub>F<sub>6</sub>) while facilitating size exclusion of perfluoropropane (C<sub>3</sub>F<sub>8</sub>). The dual-functional adsorbent offers multiple binding sites to realize intelligent selective recognition of C<sub>3</sub>F<sub>6</sub>, as supported by theoretical calculations and in situ spectroscopic experiments. Mixed-gas breakthrough experiments validate the capability of CoFA to produce high-purity (>5 N) C<sub>3</sub>F<sub>8</sub> in a single step. Importantly, the stability and cost-effective scalable synthesis of CoFA underscore its extraordinary potential for industrial C<sub>3</sub>F<sub>6</sub>/C<sub>3</sub>F<sub>8</sub> separations. This bioinspired molecular recognition approach opens new avenues for the efficient purification of fluorinated electronic specialty gases. Propane ; Metal-organic framework ; Materials science ; Chemical engineering ; Separation (statistics) ; Nanotechnology ; Chemistry ; Organic chemistry ; Computer science ; Adsorption Metal-Organic Frameworks: Synthesis and Applications ; Molecular Sensors and Ion Detection ; Supramolecular Self-Assembly in Materials
Authors: Ahmed S. Abou-Elyazed | Abdelhalim I. Ftooh | Yinyong Sun | Asmaa G. Ashry | Amira K. F. Shaban | Ahmed M. El‐Nahas | Ahmed M. Yousif
Source: ACS Omega (article, 2024-08-24)
Field: Chemistry — Inorganic Chemistry

Solvent-Free Synthesis of HKUST-1 with Abundant Defect Sites and Its Catalytic Performance in the Esterification Reaction of Oleic Acid HKUST-1 has received increasing attention because of its potential applications in many fields, such as heterogeneous catalysis, sensors, gas storage, and separation. Herein, we report that HKUST-1 can be facilely prepared by heating a ground mixture of copper nitrate trihydrate and 1,3,5-benzenetricarboxylic acid in an autoclave at 80 °C for 10 h. The data from nitrogen sorption show that the obtained material, named HKUST-1-free, possesses a high BET specific surface area of 1671 m<sup>2</sup>/g and a pore volume of 0.8 cm<sup>3</sup>/g. The results from acid-base titration indicate that the number of defect sites in HKUST-1-free is more than that in HKUST-1-solvent prepared by the solvothermal method. As a heterogeneous catalyst, HKUST-1-free gave a high yield (91%) of methyl oleate in the esterification reaction of oleic acid with methanol at room temperature compared to HKUST-1-solvent (70%). Additionally, it is proven that HKUST-1-free is a heterogeneous catalyst and can be reused. Catalysis ; Solvent ; Oleic acid ; Methanol ; Sorption ; Chemistry ; Autoclave ; Phosphotungstic acid ; Yield (engineering) ; Acetone ; BET theory ; Titration ; Chemical engineering ; Inorganic chemistry ; Organic chemistry ; Materials science ; Adsorption ; Metallurgy Metal-Organic Frameworks: Synthesis and Applications ; Polyoxometalates: Synthesis and Applications ; Gas Sensing Nanomaterials and Sensors