Materials Literature
按标题、摘要、年份、主题和来源检索公开元数据。结果保留作者、摘要、分类与原始来源链接。
This paper reports on the first attempt to enclose diamond nanoparticles--produced by detonation--into a Kevlar matrix. A nanocomposite material (40 wt% diamond) was prepared by precipitation from an acidic solution of Kevlar containing dispersed nanodiamonds. In this material, the diamond nanoparticles (Ø = 4 nm) are…
Abstract Lagrangian variational approach is employed to derive the equations of equilibrium of strain‐gradient elasticity. For a periodic lamellar‐morphology strain‐gradient medium, we present an exact formula for the overall, system stiffness. We compare the formula with direct atomistic estimates of stiffness of bin…
A Ag(I) complex was prepared from azobenzenonaphthalenophane as a photoreactive multidentate ligand. The coordination of Ag(I) was reversibly controlled by photoisomerization of the azobenzene unit, and at the same time, Ag(I) accelerated the Z-E thermal isomerization of the azobenzene unit.
The effects of electron beam irradiation of (ethylene vinyl acetate) EVA containing 18% vinyl acetate was studied. The EVA sample was then irradiated by using 3 MeV electron beam machine at doses ranging from 120 to 360 kGy in air at room temperature and analyzed for mechanical, thermal and electrical properties. It w…
We present a dielectric continuum model approach for studying the electrical polarization properties of interface polarization coupled ${\text{BaTiO}}_{3}$, ${\text{BaTiO}}_{3}\text{-ZnO}$, and ${\text{ZnO-BaTiO}}_{3}\text{-ZnO}$ thin-film structures consisting of several hundred nanometer thick layers. Our model augm…
Hohle Cu2O-Nanostrukturen einheitlicher Größe (siehe SEM-und TEM-Bilder) wurden durch oxidatives Ätzen von gekappt-oktaedrischen Vorstufen erhalten. Ein besonderes Merkmal der Nanohohlkörper ist das Fehlen der sechs {100}-Flächen. Die Strukturen sind vielmehr aus acht hexagonalen {111}-Flächen konstruiert, von denen e…
The effect of different oxidation and reducing pretreatments on dendrimer-encapsulated platinum nanoparticles (Pt-DENs) dispersed on a high-surface-area sol-gel-made silica support was assessed by evaluating the capacity of the resulting catalysts to adsorb CO, NO, and acetylene using IR absorption spectroscopy. The u…
Abstract Acquiring materials that simultaneously meet two or more conflicting requirements is very difficult. For instance, a situation wherein the color chromaticity and photoluminescence (PL) intensity of phosphors conflict with one another is a frequent problem. Therefore, identification of a good phosphor that sim…
Core P(MAOETIB-GMA) microparticles of 40-200 microm were prepared by suspension copolymerization of the iodinated monomer 2-methacryloyloxyethyl (2,3,5-triiodobenzoate), MAOETIB, with a low concentration of the monomer glycidyl methacrylate, GMA, which formed hydrophilic surfaces on the particles. Magnetic gamma-Fe(2)…
Abstract The effect of high‐pressure processing (HPP) on the total migration into distilled water and olive oil and on the barrier properties of four complex packaging materials were evaluated. The films were polyethylene/ethylene‐vinyl‐alcohol/polyethylene (PE/EVOH/PE), metallized polyester/polyethylene, polyester/po…
Zigzag graphene nanoribbons can have magnetic ground states with ferromagnetic, antiferromagnetic, or canted configurations, depending on carrier density. We show that an electric field directed across the ribbon alters the magnetic state, favoring antiferromagnetic configurations. This property can be used to prepare…
A novel polar oxide of ZnSnO3 with LiNbO3-type structure has been investigated using first-principles density functional theory. The calculated pressure dependence of the phase stability in the ternary Zn2+Sn4+O2− system confirms the experimental results and detailed mechanism of the pressure-induced phase transitio…
Nanocrystalline Nd(2)Fe(17) powders have been obtained by means of high-energy ball milling from nearly single-phase bulk alloys produced by arc melting and high temperature homogenization annealing. The rhombohedral Th(2)Zn(17)-type crystal structure of the bulk alloy remains unaltered after the milling process, with…
High throughput production of nanofibers by means of "Tip-less Electrospinning" (TLES) has been demonstrated using a circular cylinder as the emitting electrode. Electrohydrodynamics instabilities on a thin liquid film under high electrical field can generate artificial liquid jets for the TLES process. Experimental r…
The limits and useful modifications of the jellium model are of great interest in understanding the properties of metallic clusters, especially involving bimetallic systems. We have measured the relative reactivity of ${\text{CuAl}}_{n}^{\ensuremath{-}}$ clusters $(n=11--34)$ with ${\text{O}}_{2}$. An odd-even alterna…
A method of increasing the axial zero-field splitting parameter for transition metal complexes of utility in the assembly of magnetic clusters is demonstrated through the use of heavy atoms as auxiliary ligands. The octahedral complexes [Cr(dmpe)(2)(CN)X](+) (dmpe = 1,2-bis(dimethylphosphino)ethane, X = Cl, Br, I) and…
The low-temperature variation in the London penetration depth for a number of iron-pnictide and iron-chalcogenide superconductors is nearly quadratic, $\ensuremath{\Delta}\ensuremath{\lambda}(T)=\ensuremath{\beta}{T}^{n}$ with $n\ensuremath{\approx}2$. The coefficient in this dependence shows a robust scaling, $\ensur…
4,4-Difluoro-4-bora-3a,4a-diaza-s-indacene bridged bis(permethyl-beta-cyclodextrins) 1 was synthesized successfully through click chemistry, and it forms a well-defined linear assembly with 5,10,15,20-tetrakis(4-sulfonatophenyl)porphyrin 2 via extremely strong host-guest interactions, which was identified by the metho…
Biodegradable films based on gelatin and Na+-Montmorillonite were prepared by mixing of gelatin solutions with ultrasonically pre-treated clay suspensions under controlled conditions. The DRX patterns and AFM images suggested that ultrasonication process resulted in homogeneously distributed layered silicates inside t…
We studied the structural, chemical and magnetic properties of non-doped ceria (CeO(2)) thin films electrodeposited on silicon substrates. Experimental results confirm that the observed room temperature ferromagnetism is driven by both cerium and oxygen vacancies. We investigated ceria films presenting vacancy concent…