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Improving Fire Retardancy of Beech Wood by Graphene

Ayoub Esmailpour、Roya Majidi、Hamid R. Taghiyari 等 6 位作者2020-02-03Polymers

The aim of this paper was to improve the fire retardancy of beech wood by graphene. Six fire properties, namely time to onset of ignition, time to onset of glowing, back-darkening time, back-holing time, burnt area and weight loss were measured using a newly developed apparatus with piloted ignition. A set of specimen…

Fire effects on ecosystemsFire dynamics and safety researchFlame retardant materials and properties

Modelling vacuum flashover mitigation with complex surface microstructure: mechanism and application

Shu Zhang、Guangyu Sun、Haibao Mu 等 6 位作者2020-02-03High Voltage

The vacuum discharge along the dielectric surface, also called surface flashover, brings significant damages to the vacuum‐solid insulation system. Here the authors implement shape‐flexible, complex surface groove microstructures on the dielectric to mitigate the initiation of vacuum flashover. A particle‐in‐cell simu…

High voltage insulation and dielectric phenomenaPlasma Diagnostics and ApplicationsVacuum and Plasma Arcs

Durability Issues and Corrosion of Structural Materials and Systems in Farm Environment

Chrysanthos Maraveas2020-02-03Applied Sciences

This review paper investigated the durability and corrosion of materials used in the construction of agricultural buildings. Even though concrete and metal were the materials of choice in the construction of farm structures, they are susceptible to corrosion and environmental degradation. Acid attacks result in the ox…

Concrete and Cement Materials ResearchMagnesium Oxide Properties and ApplicationsStructural mechanics and materials

Review—Functional Platforms for (Bio)sensing: Thiophene-Pyrrole Hybrid Polymers

Roxana‐Mihaela Apetrei、Pınar Çamurlu2020-02-03Journal of The Electrochemical Society

The synthesis of thiophene-pyrrole hybrid polymers has become of increased interest due to their potential in a wide range of applications, from optoelectronics to biodevices. While the extended application of these materials in optoelectronics or photovoltaics has been previously addressed, a comprehensive account on…

Electrochemical sensors and biosensorsConducting polymers and applicationsElectrochemical Analysis and Applications

Draw Ratio at the Onset of Strain-Induced Crystallization in Cross-Linked Natural Rubber

Pierre‐Antoine Albouy、Paul Sotta2020-02-03Macromolecules

The first theory of strain-induced crystallization in regular elastomers was laid out some 70 years ago by Flory. He identified the driving mechanism that concurs to the stabilization of the crystalline phase under stretching as the relaxation of the remaining amorphous phase because of the growth of oriented crystall…

Polymer crystallization and propertiesPolymer Nanocomposites and PropertiesNatural Fiber Reinforced Composites

Cross-Coupling Strategy for the Synthesis of Diazocines

Shuo Li、Nadi Eleya、Anne Staubitz2020-02-03Organic Letters

Ethylene bridged azobenzenes are novel, promising molecular switches that are thermodynamically more stable in the ( Z ) than in the ( E ) configuration, contrary to the linear azobenzene. However, their previous synthetic routes were often not general, and yields were poorly reproducible, and sometimes very low. Here…

Molecular Junctions and NanostructuresPhotochromic and Fluorescence ChemistryNanomaterials for catalytic reactions

Correlation Between the Structure and Compressive Property of PMMA Microcellular Foams Fabricated by Supercritical CO2 Foaming Method

Ruizhi Zhang、Chen Ju、Yuxuan Zhu 等 8 位作者2020-02-03Polymers

In this study, we fabricated poly (methyl methacrylate) (PMMA) microcellular foams featuring tunable cellular structures and porosity, through adjusting the supercritical CO2 foaming conditions. Experimental testing and finite element model (FEM) simulations were conducted to systematically elucidate the influence of…

Cellular and Composite StructuresPolymer composites and self-healingPolymer Foaming and Composites

Improving the Toughness and Thermal Resistance of Polyoxymethylene/Poly(lactic acid) Blends: Evaluation of Structure–Properties Correlation for Reactive Processing

Jacek Andrzejewski、Katarzyna Skórczewska、Arkadiusz Kloziński2020-02-03Polymers

The study focuses on the development of polyoxymethylene (POM)/poly(lactic acid) (PLA) blends with increased impact and thermal resistance. The study was conducted in two phases; in the first part, a series of unmodified blends with PLA content of 25, 50, and 75 wt.% was prepared, while the second part focused on the…

biodegradable polymer synthesis and propertiesPolymer composites and self-healingCarbon dioxide utilization in catalysis

Functionalized Ordered Mesoporous Silica by Vinyltriethoxysilane for the Removal of Volatile Organic Compounds through Adsorption/Desorption Process

Xingang Li、Jingjuan Yuan、Jinze Du 等 5 位作者2020-02-03Industrial & Engineering Chemistry Research

An organic–inorganic hydrophobic mesoporous silica has been successfully prepared by a co-condensation method with tetraethoxysilane (TEOS) and vinyltriethoxysilane (VTES) as mixed precursors under acidic condition. The synthesized mesoporous silica has been characterized by small-angle X-ray diffraction, transmission…

Catalytic Processes in Materials ScienceMesoporous Materials and CatalysisAerogels and thermal insulation

Sensitized Mechanoluminescence Design toward Mechanically Induced Intense Red Emission from Transparent Polymer Films

Fan Yang、Yuan Yuan、Rint P. Sijbesma 等 4 位作者2020-02-03Macromolecules

Mechanoresponsive polymers with intense red emission are highly desirable in view of the strong penetrability and high resolution of red luminescence. Herein we introduce the sensitized luminescence of rare-earth Eu(III) complexes into the mechanochemiluminescence from polymeric dioxetane in a covalent way. By control…

Advanced Sensor and Energy Harvesting MaterialsNanoplatforms for cancer theranosticsLuminescence and Fluorescent Materials

Out-of-plane electromechanical coupling in transition metal dichalcogenides

Christopher J. Brennan、Kalhan Koul、Nanshu Lu 等 4 位作者2020-02-03Applied Physics Letters

Monolayer transition metal dichalcogenides (TMDs) are intrinsically piezoelectric within the plane of their atoms, but out-of-plane piezoelectric response should not occur due to the symmetry of the crystal structure. Recently, however, MoS2 was shown to exhibit out-of-plane electromechanical coupling consistent with…

2D Materials and ApplicationsNonlocal and gradient elasticity in micro/nano structuresMXene and MAX Phase Materials

Inverse design of nanoparticles for enhanced Raman scattering

Rasmus E. Christiansen、Jérôme Michon、Mohammed Benzaouia 等 5 位作者2020-02-03Optics Express

× improvement in surface-enhanced Raman scattering (SERS) efficiency compared to traditional resonant structures such as bowtie antennas. TO inverse design leads to surprising structures very different from conventional designs, which simultaneously optimize focusing of the incident wave and emission from the Raman di…

Gold and Silver Nanoparticles Synthesis and ApplicationsMetamaterials and Metasurfaces ApplicationsPlasmonic and Surface Plasmon Research

Adsorption and superficial transport of oil on biological and bionic superhydrophobic surfaces: a novel technique for oil–water separation

Wilhelm Barthlott、Markus Moosmann、Inga Noll 等 11 位作者2020-02-03Philosophical Transactions of the Royal Society A Mathematical Physical and Engineering Sciences

effect) and thus become increasingly interesting for drag reduction and other 'bioinspired' applications. However, another feature of superhydrophobic surfaces, i.e. the adsorption (not absorption) and subsequent superficial transportation and desorption capability for oil, has been neglected. Intense research is curr…

Surface Modification and SuperhydrophobicityFluid Dynamics and Heat TransferElectrohydrodynamics and Fluid Dynamics

Whole‐brain chemical exchange saturation transfer imaging with optimized turbo spin echo readout

Yi Zhang、Xingwang Yong、Bingsuo Zou 等 11 位作者2020-02-03Magnetic Resonance in Medicine

Purpose To achieve fast whole‐brain chemical exchange saturation transfer (CEST) imaging with negligible susceptibility artifact. Methods An optimized turbo spin echo readout module, also known as sampling perfection with application optimized contrasts by using different flip angle evolutions (SPACE), was deployed in…

Magnetism in coordination complexesLanthanide and Transition Metal ComplexesElectron Spin Resonance Studies

Molecular Parameters Governing the Elastic Properties of Brush Particle Films

Jaejun Lee、Zongyu Wang、Jianan Zhang 等 8 位作者2020-02-03Macromolecules

Elucidation of the mutual influence of composition and architecture of polymer canopies on the assembly and mechanical properties of brush particle-based materials holds the promise of advancing the understanding of the governing parameters controlling interactions in hybrid materials and the development of novel func…

Orthopaedic implants and arthroplastyPolymer Surface Interaction StudiesAdhesion, Friction, and Surface Interactions

Solution-Based Synthesis of Few-Layer WS2 Large Area Continuous Films for Electronic Applications

Omar Adnan Abbas、Ioannis Zeimpekis、He Wang 等 11 位作者2020-02-03Scientific Reports

Abstract Unlike MoS 2 ultra-thin films, where solution-based single source precursor synthesis for electronic applications has been widely studied, growing uniform and large area few-layer WS 2 films using this approach has been more challenging. Here, we report a method for growth of few-layer WS 2 that results in co…

Perovskite Materials and Applications2D Materials and ApplicationsMXene and MAX Phase Materials

Cellulose nanoparticles synthesised from potato peel for the development of active packaging film for enhancement of shelf life of raw prawns (Penaeus monodon) during frozen storage

Shruthy Ramesh、S. Jacqulin Veda Jancy、P. Radhakrishnan2020-02-03International Journal of Food Science & Technology

Summary In this study, the cellulose nanoparticles (CNP) isolated from potato peel were used for reinforcement of polyvinyl alcohol (PVA)‐based active packaging film. The above film was used to pack the raw prawns (Penaeus monodon) at −20 °C, and the colour change, protein content, TVB‐N, TMA and microbial analysis we…

Nanocomposite Films for Food PackagingAdvanced Cellulose Research StudiesElectrospun Nanofibers in Biomedical Applications

Polyurea Dendrimer Folate-Targeted Nanodelivery of l-Buthionine Sulfoximine as a Tool to Tackle Ovarian Cancer Chemoresistance

Adriana Cruz、Pedro Mota、Cristiano Ramos 等 9 位作者2020-02-03Antioxidants

Ovarian cancer is a highly lethal disease, mainly due to chemoresistance. Our previous studies on metabolic remodeling in ovarian cancer have supported that the reliance on glutathione (GSH) bioavailability is a main adaptive metabolic mechanism, also accounting for chemoresistance to conventional therapy based on pla…

Click Chemistry and ApplicationsDendrimers and Hyperbranched PolymersFerrocene Chemistry and Applications

Contactless Spin Switch Sensing by Chemo‐Electric Gating of Graphene

Erik P. van Geest、Kh. Shakouri、Wangyang Fu 等 7 位作者2020-02-03Advanced Materials

Abstract Direct electrical probing of molecular materials is often impaired by their insulating nature. Here, graphene is interfaced with single crystals of a molecular spin crossover complex, [Fe(bapbpy)(NCS)2], to electrically detect phase transitions in the molecular crystal through the variation of graphene resist…

Graphene research and applicationsQuantum and electron transport phenomenaMolecular Junctions and Nanostructures

Valley polarization in monolayer CrX2 (X = S, Se) with magnetically doping and proximity coupling

Chengan Lei、Yandong Ma、Ting Zhang 等 6 位作者2020-02-03New Journal of Physics

Abstract Manipulating the valley degree of freedom as an information carrier has been a focused topic for both fundamental and applied research. Here, using first-principles calculations, we report the identification of monolayer CrX2 (X = S, Se) as a novel two-dimensional valleytronic crystal. It shows large valley s…

Perovskite Materials and Applications2D Materials and ApplicationsMXene and MAX Phase Materials