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Nanofiber NiMoO4/g-C3N4 Composite Electrode Materials for Redox Supercapacitor Applications

Kannadasan Thiagarajan、Thirugnanam Bavani、Prabhakarn Arunachalam 等 8 位作者2020-02-23Nanomaterials

NiMoO4/g-C3N4 was fabricated by a hydrothermal method and used as an electrode material in a supercapacitor. The samples were characterized by XRD, FTIR, scanning electron microscopy (SEM) and transmission electron microscopy (TEM) to study the physical and structural properties of the as-prepared NiMoO4/g-C3N4 materi…

Supercapacitor Materials and FabricationElectrochemical sensors and biosensorsGas Sensing Nanomaterials and Sensors

Polarization-resolved broadband time-resolved optical spectroscopy for complex materials: application to the case of MoTe2 polytypes

Michele Perlangeli、Simone Peli、Davide Soranzio 等 6 位作者2020-02-23Optics Express

Time-resolved optical spectroscopy (TR-OS) has emerged as a fundamental spectroscopic tool for probing complex materials, to both investigate ground-state-related properties and trigger phase transitions among different states with peculiar electronic and lattice structures. We describe a versatile approach to perform…

2D Materials and ApplicationsTopological Materials and PhenomenaOrganic and Molecular Conductors Research

Raman Scattering by sp$^2$ Amorphous Carbons

E. F. Sheka、Ye. A. Golubev、N. A. Popova2020-02-23arXiv

The paper presents a cooperative consideration of Raman spectra of $^2$ amorphous carbons as well as the nature and type of their amorphicity. The latter was attributed to the amorphization of a new type named as enforced fragmentation. The fragments are stable graphenous molecules, which are the basic structural unit…

Materials Science

Uncertainty Quantification of First Principles Computational Phase Diagram Predictions of Li-Si System Via Bayesian Sampling

Ying Yuan、Gregory Houchins、Pin-Wen Guan 等 4 位作者2020-02-23arXiv

In this work, an assessment of the CALPHAD method trained on only density functional theory (DFT) data is performed for the Li-Si binary system, as a case study. Using a parameter sampling approach based on the Bayesian Error Estimation Functional (BEEF-vdW) exchange-correlation potential. By using built-in ensemble o…

Materials Science

Experimental Syntheses of Sodalite-like Clathrate EuH$_6$ and EuH$_9$ at Extreme Pressures

Liang Ma、Guangtao Liu、Yingying Wang 等 8 位作者2020-02-23arXiv

The recent discovery of a class of sodalite-like clathrate superhydrides (e.g., YH6, YH9, ThH9, ThH10, and LaH10) at extreme pressures, which exhibit commonly a high-temperature superconductivity with the highest Tc approaching 260 K for LaH10, opened up a new era in search of high-temperature superconductors in metal…

Materials ScienceChemical Physics

Diamond Like Carbon Films Containing Si: Structure and Nonlinear Optical Properties

Šarūnas Meškinis、Andrius Vasiliauskas、Mindaugas Andrulevičius 等 6 位作者2020-02-23Materials

In the present research diamond-like carbon (DLC) films containing 4–29 at.% of silicon were deposited by reactive magnetron sputtering of carbon target. Study by X-ray photoelectron spectroscopy revealed the presence of Si–C bonds in the films. Nevertheless, a significant amount of Si–O–C and Si–Ox bonds was present…

Carbon Nanotubes in CompositesDiamond and Carbon-based Materials ResearchFullerene Chemistry and Applications

Integrated Metasurfaces with Microprints and Helicity‐Multiplexed Holograms for Real‐Time Optical Encryption

Xuhao Luo、Yueqiang Hu、Xin Li 等 9 位作者2020-02-23Advanced Optical Materials

Abstract Optical encryption with multichannel, high complexity, and artistry characteristics has become one of the most significant approaches for modern information security. Recently emerged metasurface‐based optics consisting of planar subwavelength metamaterials has been engineered as an ideal platform for optical…

Metamaterials and Metasurfaces ApplicationsChaos-based Image/Signal EncryptionAdvanced Optical Imaging Technologies

An Ultraviolet–Visible and Near‐Infrared‐Responded Broadband NIR Phosphor and Its NIR Spectroscopy Application

Xufeng Zhou、Wanying Geng、Junyi Li 等 8 位作者2020-02-23Advanced Optical Materials

Abstract High‐radiance near‐infrared (NIR) phosphor‐converted light‐emitting diodes (pc‐LEDs) are demanded for wearable biosensing devices and the properties of these pc‐LEDs are highly dependent on the performance of the NIR phosphor. An ultraviolet–visible and NIR‐responded broadband NIR NaScGe2O6:Cr3+ phosphor is r…

Luminescence Properties of Advanced MaterialsLuminescence and Fluorescent MaterialsAdvanced Chemical Sensor Technologies

Machine learning: Accelerating materials development for energy storage and conversion

An Chen、Xu Zhang、Zhen Zhou2020-02-23InfoMat

Abstract With the development of modern society, the requirement for energy has become increasingly important on a global scale. Therefore, the exploration of novel materials for renewable energy technologies is urgently needed. Traditional methods are difficult to meet the requirements for materials science due to lo…

Advanced Photocatalysis TechniquesMachine Learning in Materials ScienceX-ray Diffraction in Crystallography

Integrity Assessment of Internally Corroded Pipelines Rehabilitated With a Kevlar-Reinforced Flexible Liner

M. Fahed、Imad Barsoum、Akram Alfantazi 等 4 位作者2020-02-22Journal of Pressure Vessel Technology

Abstract Contemporary approach of corrosion prevention is to use internal lining system to isolate the corrosive medium from the host pipe's inner surface. The liners serve to offer a longer lifecycle of pipelines, as well as a corrosion barrier against aggressive chemical agents. A recent lining technology based on a…

Corrosion Behavior and InhibitionStructural Integrity and Reliability AnalysisMaterial Properties and Failure Mechanisms

Anticancer Activity of Silver Nanoparticle by Using Cassia auriculata Extract

M. Prem Nawaz、A. Afroos Banu、S. Raja Mohamed 等 5 位作者2020-02-22European Journal of Medicinal Plants

In this study, green synthesis of silver nanoparticles (Ag NPs) has done using traditional herbal namely Cassia auriculata extract by the simple Green synthesis method. The synthesized Ag nanoparticles were studied by the characterization techniques includes X-ray diffraction (XRD) crystallography for nature of crysta…

Nanoparticles: synthesis and applicationsNanotechnology research and applications

Super broadband acoustic impedance matching by MUT‐type acoustic metamaterial

Hiroki Tanaka、Shuntaro Machida2020-02-22Electronics and Communications in Japan

Abstract We show the structure and matching theory of MUT‐type acoustic matching device. A simulation model of the finite element method was constructed and the following evaluations were made: (1) analysis of the stress distribution inside the proposed device in order to find the mechanism of ultrasound propagation,…

Metamaterials and Metasurfaces ApplicationsAcoustic Wave Phenomena Research

Selective hydrogen production at Pt(111) investigated by Quantum Monte Carlo methods for metal catalysis

R. Sharma、Tapio T. Rantala、Philip E. Hoggan2020-02-22International Journal of Quantum Chemistry

Abstract This rapid communication gives the salient points and results of the theoretical investigation of a chemical reaction for efficient selective hydrogen production. The clean fuel produced is a sustainable energy source. Accurate methods based on quantum theory are used because the changing electronic structure…

Advanced Chemical Physics StudiesCatalytic Processes in Materials ScienceCatalysis and Oxidation Reactions

The Magnitude and Waveform of Shock Waves Induced by X-ray Lasers in Water

Claudiu A. Stan、Koji Motomura、G. Blaj 等 14 位作者2020-02-22Applied Sciences

The high energy densities deposited in materials by focused X-ray laser pulses generate shock waves which travel away from the irradiated region, and can generate complex wave patterns or induce phase changes. We determined the time-pressure histories of shocks induced by X-ray laser pulses in liquid water microdrops,…

Laser-Plasma Interactions and DiagnosticsDiamond and Carbon-based Materials ResearchLaser-induced spectroscopy and plasma

Mikrobiyal Yakıt Hücrelerinde Kullanılan Saf Kültür Mikroorganizmaları ve Genel Özellikleri

Ahmet Erensoy、Nurettin Çek2020-02-22European Journal of Science and Technology

Biyokütle enerjisi, günümüzün artan enerji taleplerini karşılamakta kaçınılmaz bir görev yürüten yenilenebilir bir enerjidir. Biyoyakıtların aksine, mikrobiyal yakıt hücreleri organik malzemelerde toplanan enerjiyi doğrudan biyoelektrikliğe dönüştürür. Mikrobiyal yakıt hücreleri, kalkınma odaklı ve çok yönlü bir yenil…

Supercapacitor Materials and FabricationMetal Extraction and BioleachingMicrobial Fuel Cells and Bioremediation

Structural changes in sugarcane bagasse cellulose caused by enzymatic hydrolysis

Makiko Imai、Yoshiki Horikawa、Shingo Kiyoto 等 5 位作者2020-02-22Journal of Wood Science

Abstract Cellulose I is not completely saccharified to glucose at a low cellulase concentration. In this study, sugarcane cellulose saccharification residues were investigated. Transmission electron microscopy images indicated that the cellulose microfibrils became shorter in the early stages of saccharification and g…

Biofuel production and bioconversionAdvanced Cellulose Research StudiesLignin and Wood Chemistry

M(VI) Oxidation State Stabilization in Iron, Cobalt and Nickel Heteroligand Metal Chelates Containing 3,7,11,15-Tetraazaporphine and Two Axial Oxo Ligands: Quantum-Chemical Simulation

О. В. Михайлов、Д. В. Чачков2020-02-22International Journal of Molecular Sciences

The quantum-chemical calculation of iron, cobalt and nickel heteroligand complexes with the double deprotonated form of (NNNN)-donor atomic ligand-3,7,11,15-tetraazaporphine-and two oxo ligands has been carried out. Data on the structural and standard thermodynamic parameters, NBO analysis and multiplicity of the grou…

Metal complexes synthesis and propertiesMagnetism in coordination complexesMetal-Catalyzed Oxygenation Mechanisms

Effect of Grain Statistics on Micromechanical Modeling: The Example of Additively Manufactured Materials Examined by Electron Backscatter Diffraction

Abhishek Biswas、Mahesh R. G. Prasad、Napat Vajragupta 等 6 位作者2020-02-22Advanced Engineering Materials

Micromechanical modeling is one of the prominent numerical tools for the prediction of mechanical properties and the understanding of deformation mechanisms of metals. As input parameters, it uses data obtained from microstructure characterization techniques, among which the electron backscatter diffraction (EBSD) tec…

Microstructure and mechanical propertiesMicrostructure and Mechanical Properties of SteelsAdditive Manufacturing Materials and Processes

Influence of the as-cast and cold rolled microstructural conditions over corrosion resistance in an advanced TWIP steel microalloyed with boron

Antonio Enrique Salas Reyes、Gerardo Altamirano-Guerrero、Jóse Fernando Flores Álvarez 等 7 位作者2020-02-22Journal of Materials Research and Technology

As a high-performance material, advanced TWIP steels have recently received considerable attention, particularly promising to form parts of complex geometry due to the superior mechanical properties. In the present research work, the study of the corrosion resistance of an experimental advanced TWIP steel was carried…

Corrosion Behavior and InhibitionMicrostructure and Mechanical Properties of SteelsHydrogen embrittlement and corrosion behaviors in metals

Forming behaviour of aluminium matrix nano Al2O3 composites for automotive applications

Rajesh Purohit、M.M.U. Qureshi、Ashish Jain2020-02-22Advances in Materials and Processing Technologies

Researchers have been extensively studied the outstanding performance of composite materials in comparison with the individual materials. Metal matrix nanocomposites have emerged as one of the functional material with improved properties, contributing to the wide range of applications. Aluminium matrix nano Al2O3 comp…

Advanced ceramic materials synthesisAluminum Alloys Composites PropertiesAdvanced materials and composites