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Study by Molecular Dynamics and First-Principles Calculation on the Influence of Length of Molecular Chain and Entanglement of Molecular Chains on the Strength of Amorphous Polyethylene

K. Naito、Yusuke Ochiai、Rei TSUBOI 等 5 位作者2020-08-14Journal of Fiber Science and Technology

In order to comprehensively investigate from the effects of the morphology (length and entanglement) of the molecular chain on the strength of polyethylene to its fracture mechanism, molecular dynamics simulation of uniaxial tension using low molecular weight amorphous polyethylene and firstprinciples calculation of u…

Carbon Nanotubes in CompositesPolymer crystallization and propertiesFiber-reinforced polymer composites

Electromagnetic and magnetic methods of non-destructive testing for control of damage accumulation in structural steels and alloys (review)

A. G. Efimov2020-08-14Industrial laboratory Diagnostics of materials

Control of the stress-strain state, compressive and tension stresses, accumulated fatigue damage is one of the goals of non-destructive testing. We consider data of current research in the field of eddy current and electromagnetic methods of non-destructive testing aimed at solving the problem of monitoring the accumu…

Non-Destructive Testing TechniquesEngineering Diagnostics and ReliabilityMaterial Properties and Failure Mechanisms

Controllable Synthesis of Mesoporous Silica with Ionic Liquid–Supramolecular Organogel Cotemplate

Yiming Hu、Лили Сун、Shaokun Tang2020-08-14Crystal Growth & Design

A novel dual-template strategy was first proposed for the fabrication of mesoporous silica with hollow triangular prism morphology, using amino acid ionic liquid tetramethylammonium glycine ([N 1111 ][Gly]) and supramolecular organogel N -lauroyl- l -glutamic acid di- n -butylamide (GP-1) as the cotemplate. The influe…

Mesoporous Materials and CatalysisPolyoxometalates: Synthesis and ApplicationsAerogels and thermal insulation

The Influence of Halide Substituents on the Structural and Magnetic Properties of Fe6Dy3 Rings

Irina A. Kühne、Christopher E. Anson、Annie K. Powell2020-08-14Frontiers in Chemistry

We report the synthesis and magnetic properties of three new nine-membered Fe(III)-Dy(III) cyclic coordination clusters (CCCs), with a core motif of [Fe6Dy3(m-OMe)9(vanox)6(X-benz)6] where the benzoate ligands are substituted in the para-position with X = F (1), Cl (2), Br (3). Single crystal X-ray diffraction structu…

Magnetism in coordination complexesLanthanide and Transition Metal ComplexesInorganic Chemistry and Materials

Adaptive dipolar correlation in ferroelectric x(Ba0.7Ca0.3)TiO3−(1−x)Ba(Zr0.2Ti0.8)O3

K. Datta、Kumar Brajesh、Rajeev Ranjan 等 4 位作者2020-08-14Physical review. B./Physical review. B

Deriving structure-property relationships for multicomponent ferroelectric materials has always been a challenging problem because the properties are mostly driven by subtle nanoscale correlations which are hard to detect. Here we have studied the famous Pb-free material $x({\mathrm{Ba}}_{0.7}{\mathrm{Ca}}_{0.3}){\mat…

Ferroelectric and Piezoelectric MaterialsMultiferroics and related materialsMicrowave Dielectric Ceramics Synthesis

Approximant-based orientation determination of quasicrystals using electron backscatter diffraction

Grzegorz Cios、Gert Nolze、Aimo Winkelmann 等 9 位作者2020-08-14Ultramicroscopy

Orientation mapping of quasicrystalline materials is demonstrated using crystalline approximant structures in the technique of electron backscatter diffraction (EBSD). The approximant-based orientations are symmetrised according to the rotational point group of the quasicrystal, including the visualization of orientat…

Quasicrystal Structures and PropertiesX-ray Diffraction in CrystallographyMineralogy and Gemology Studies

A Genetic Algorithmic Approach to Determine the Structure of Li–Al Layered Double Hydroxides

Josiah Roberts、Yang Song、Mark Crocker 等 4 位作者2020-08-14Journal of Chemical Information and Modeling

Layered double hydroxides (LDH) demonstrate significant potential across a range of applications, including as catalysts, delivery vehicles for pharmaceuticals, environmental remediation, and supercapacitors. Explaining the mechanism of LDH action at the atomic scale in these and other applications is challenging, how…

Supercapacitor Materials and FabricationLayered Double Hydroxides Synthesis and ApplicationsInorganic Chemistry and Materials

Silver Adsorption on Calcium Niobate(001) Nanosheets: Calorimetric Energies That Explain Sinter-Resistant Support

Wei Zhang、Ritesh Uppuluri、Thomas E. Mallouk 等 4 位作者2020-08-14Journal of the American Chemical Society

Metal nanoparticles deposited on oxide supports are essential to many technologies, including catalysts, fuel cells, and electronics. Therefore, understanding the chemical bonding strength between metal nanoparticles and oxide surfaces is of great interest. The adsorption energetics, adhesion energy, and adsorbate str…

Quantum Dots Synthesis And PropertiesAdvanced Thermoelectric Materials and DevicesIonic liquids properties and applications

Mechanochemical Synthesis of Zinc Oxide Nanoparticles and their Antibacterial Activity against Escherichia Coli

Tuan Anh Nguyen、Thi Yen、Thi Yen Mai 等 9 位作者2020-08-14Materials science forum

Crystalline ZnO nanoparticles were synthesized by a mechanochemical method using zinc acetate dihydrate and sodium hydroxide as starting materials, and cetyl trimethylammonium bromide (CTAB) as a protective agent. Mechanochemical activation of the solid-state reaction was achieved at low temperatures in a rapid labora…

Nanoparticles: synthesis and applicationsZnO doping and propertiesPigment Synthesis and Properties

Elucidating Efficacy of Ingested Positively Charged Zein Nanoparticles Against Noctuidae

Colin A. R. Bonser、Xuan Chen、Carlos E. Astete 等 5 位作者2020-08-14Journal of Economic Entomology

A meridic diet overlay bioassay using empty, positively charged zein nanoparticles ((+)ZNP) was performed on soybean looper (Chrysodeixis includens (Walker)), tobacco budworm (Heliothis virescens (F.)), and velvetbean caterpillar (Anticarsia gemmatalis Hübner) (Lepidoptera: Noctuidae). Assessment of effects on mortali…

Nanoparticles: synthesis and applicationsInsect Pest Control StrategiesInsect Resistance and Genetics

The spatial pattern of periphytic algae communities and its corresponding mechanism to environmental variables in the Weihe River Basin, China

Yixin Liu、Jiaxu Fu、Dandong Cheng 等 7 位作者2020-08-14Hydrology research

Periphytic algae is a useful indicator of aquatic ecological conditions. We investigated the periphytic algae on natural substrate and the environmental variables at 44 sites on three river systems in the Weihe River Basin (WRB). A total of 84 species are identified, representing 37 genera. The most common genera were…

Aquatic Ecosystems and Phytoplankton DynamicsFreshwater macroinvertebrate diversity and ecologyDiatoms and Algae Research

Preparation of Antimicrobial Fibres from the EVOH/EPC Blend Containing Silver Nanoparticles

Dorota Biniaś、Włodzimierz Biniaś、A. Machnicka 等 4 位作者2020-08-14Polymers

The article presents a new fabrication method for bioactive fibres with a microporous structure of ethylene–vinyl alcohol copolymers (EVOH)/ethylene−propylene copolymer (EPC) blends. The experimental work carried out resulted in obtaining EVOH/EPC polymer blends fibres with the addition of glycerol and sodium stearate…

Nanoparticles: synthesis and applicationsMicroplastics and Plastic PollutionGraphene and Nanomaterials Applications

The Impact of the Next-Nearest Neighbor Dispersion Interactions on Spin Crossover Transition Enthalpy Evidenced by Experimental and Computational Analyses of Neutral π-Extended Heteroleptic Fe(III) Complexes

Atsuhiro Miyawaki、Tomoyuki Mochida、Takahiro Sakurai 等 5 位作者2020-08-14Inorganic Chemistry

A neutral heteroleptic Fe(III) complex 1 derived from a π-extension of the parent complex 2 was prepared and characterized. Complex 1 exhibited an abrupt spin crossover (SCO) transition exactly at room temperature ( T SCO = 298 K). A crystal structure analysis of 1 revealed that the Fe(III) complex molecules formed a…

Magnetism in coordination complexesLanthanide and Transition Metal ComplexesMetal-Catalyzed Oxygenation Mechanisms

Site preference of Y and Mn in nonstoichiometric BaTiO3 from first principles

Preston C. Bowes、Jonathon N. Baker、Douglas L. Irving2020-08-14Physical Review Materials

$\mathrm{Ba}\mathrm{Ti}{\mathrm{O}}_{3}$ is often doped with Y and/or Mn to realize a range of desired properties. Yet, existing canonical models of their defect chemistry cannot explain various observed phenomena outside of the high temperature electrical conductivity measurements to which they were fit. Existing mod…

Ferroelectric and Piezoelectric MaterialsMagnetic and transport properties of perovskites and related materialsElectronic and Structural Properties of Oxides

High Ductility with a Homogeneous Microstructure of a Mg–Al–Zn Alloy Prepared by Cyclic Expansion Extrusion with an Asymmetrical Extrusion Cavity

Zhaoming Yan、Jie Zheng、Jiaxuan Zhu 等 6 位作者2020-08-14Metals

In the current work, cyclic expansion extrusion with an asymmetrical extrusion cavity (CEE-AEC), as a relatively novel severe plastic deformation method, was applied to fabricate an AZ31B magnesium alloy plate with a size of 50 × 100 × 220 mm, and the resultant microstructure, texture development, and mechanical prope…

Microstructure and mechanical propertiesMagnesium Alloys: Properties and ApplicationsAluminum Alloys Composites Properties

Influence of stacking sequence on the mechanical properties of 3D E-glass/bamboo non-woven hybrid epoxy composites

Suhas Yeshwant Nayak、B. Satish Shenoy、Mohamed Thariq Bin Hameed Sultan 等 7 位作者2020-08-14Materials Today Proceedings

Hybridization of composites is one of the many ways to optimize cost, manufacturing process and strength required for a particular application. This demands a need for knowledge about the best possible ways to deal with the dissimilar materials in the composite system. Very little light has been shed about the stackin…

Mechanical Behavior of CompositesNatural Fiber Reinforced CompositesMechanical Engineering and Vibrations Research

Precursor-Mediated Linear- and Branched-Polytypism Control in CuαZnβSnγSeδ Colloidal Nanocrystals Using a Dual-Injection Method

Huan Ren、Zhe Li、Yuanwei Sun 等 8 位作者2020-08-14Chemistry of Materials

Control of polytypism in colloidal nanocrystals allows for a shape evolution from 0D to 3D and also provides an opportunity to tailor physical properties that are crystal phase dependent. Initiating polytypism in nanostructures is a function of multiple different control parameters that dictate nucleation and growth,…

Quantum Dots Synthesis And PropertiesChalcogenide Semiconductor Thin FilmsCopper-based nanomaterials and applications

Monitoring a Mechanochemical Reaction Reveals the Formation of a New ACC Defect Variant Containing the HCO3– Anion Encapsulated by an Amorphous Matrix

Phil Opitz、María P. Asta、Alejandro Fernández-Martı́nez 等 8 位作者2020-08-14Crystal Growth & Design

Amorphous calcium carbonate (ACC) is an important precursor in the biomineralization of crystalline CaCO 3 . In nature, it serves as a storage material or as a permanent structural element, whose lifetime is regulated by an organic matrix. The relevance of ACC in materials science is primarily related to our understan…

Corrosion Behavior and InhibitionCalcium Carbonate Crystallization and InhibitionChemical Synthesis and Characterization

Surface Characterization of MoS2 Atomic Layers Mechanically Exfoliated on a Si Substrate

M. Krawczyk、Marcin Pisarek、Robert Szoszkiewicz 等 4 位作者2020-08-14Materials

Mo disulfide overlayers with the thickness exceeding 1.77 nm were obtained on Si substrates through mechanical exfoliation. The resulting Mo disulfide flakes were then analyzed ex situ using combination of Auger electron spectroscopy (AES), elastic-peak electron spectroscopy (EPES) and scanning electron microscopy (SE…

2D Materials and ApplicationsSemiconductor materials and interfacesMXene and MAX Phase Materials

The surface softness and mechanical properties of wood pulp–lyocell wet-laid nonwoven fabric

Lili Melani、Hyoung Jin Kim2020-08-14Journal of the Textile Institute

This study explores the tensile properties of wet-laid nonwoven fabric made from softwood bleached kraft pulp (SwBKP), hardwood bleached kraft pulp (HwBKP), dissolving pulp (DP), and Lyocell. Five different ratios of wood pulp and Lyocell (0/100, 10/90, 20/80, 30/70, 40/60, and 50/50) were manufactured using papermaki…

Advanced Cellulose Research StudiesTextile materials and evaluationsMaterial Properties and Processing