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。
Microencapsulated ammonium polyphosphate (VAPP) with poly(vinyl alcohol)- melamine-formaldehyde (VMF) shell was introduced in ethylene vinyl acetate copolymer (EVA) to improve its flame retardancy. Due to the presence of VMF shell, VAPP shows better compatibility, flame retardancy and water resistance compared with am…
Spatially resolved analyses, by energy-dispersive X-ray spectroscopy (EDS) and scanning electron microscopy, allowed the quantification of exogenous Si contamination in a solid oxide fuel cell (SOFC) cathode after operation. The Si quantification, taking into account the endogenous Si impurity level, correlated well w…
Three new bicomponent hydrogels of riboflavin (R) with salicylic acid (S), dihydroxybenzoic acid (B) and acetoguanamine (D) in 1:1 molar ratio have been reported. FTIR and UV-vis spectra suggest formation of H-bonded complexes in 1:1 molar ratio of the components. The network consists of tape, bar and helical tubes fo…
The mechanisms of texture development were examined for BaTiO3 and a (K,Na,Li)(Nb,Ta)O3 solid solution made by the templated grain growth method, and compared with the mechanism in Bi0.5(Na,K)0.5TiO3. The dominant mechanism was different in each material; grain boundary migration in BaTiO3, solid state spreading in Bi…
Abstract The compounds [Ni(en) 3 ] 2 Sn 2 Se 6 ( 1 ), [Ni(en)(trien)] 2 Sn 2 Se 6 ( 2 ), [Co(en)(trien)] 2 Sn 2 Se 6 ( 3 ), and [Ni 2 (trien) 2 (μ‐trien)]Cl 4 · 2H 2 O ( 4 ) (en = ethylenediamine, trien = triethylenetetramine) were solvothermally synthesized by the reactions of NiCl 2 · 6H 2 O (or CoCl 2 · 6H 2 O), ti…
We have studied the origin of suppressed remanent polarization in 4-variant BiFeO3 by correlating microscopic observations of ferroelectric/ferroelastic domain structures and ferroelectric measurements of (001) epitaxial BiFeO3 thin films with 2- and 4-ferroelastic domain variants. Piezoelectric force microscopy revea…
A flexible cold cathode based on a uniform array of ZnO nanowires over carbon fabrics was designed via a simple wet chemical route. The structural parameters of the nanowires (i.e. length, diameter) as well as their arrangement over the carbon fibers were tailored by adjusting nutrient solution composition and growth…
We have evaluated a steady-state test of foam stability, based on the steady-state height of a foam produced by a constant velocity of gas flow. This test is mentioned in the book by Bikerman [Foams, Springer, Berlin, 1973] and an elementary theory was developed for it by Verbist et al. [J. Phys. Condens. Matter 8 (19…
Nanoporous ZnO thin films presenting a tunable nanostructure and photoluminescence (PL) were grown by plasma enhanced vapor deposition on surface oxidized Si substrates. These films consist of c -axis oriented wurtzite ZnO nanocolumns whose topology, crystallinity, and PL can be tuned through the substrate temperature…
In this paper we present a comparative study on the structural characteristics of three-dimensional fiber configurations in low torque and ring spun yarns. Three-dimensional configurations of tracer fibers in the two types of yarns were measured by a continuous measurement system. Critical parameters were obtained, in…
The luminescent properties of two types of dye-poly(methyl methacrylate) (PMMA) composite nanospheres were discussed and compared. Dye molecules (Ru(bpy)(3)Cl(2)) were combined with PMMA nanospheres in two strategies: embedding dye molecules during PMMA nanosphere formation (Em-PMMA NPs) and adsorbing dye molecules on…
Ordered ZnS and CdS nanocrystal assemblies have been synthesized by a facile bioinspired approach consisting of an initial self-assembly of engineered proteins into spherical biotemplates and a subsequent protein-directed nucleation and growth of ZnS and CdS nanocrystals symmetrically distributed over the self-assembl…
Polyester fabrics were treated by atmospheric pressure plasma (APP) to enhance hydrophilic behavior of the fiber surfaces. Damage of the fabric due to the APP exposure was not significantly observed. It was found that the APP exposure increased the wettability, oxygen concentration and roughness of the polyester fiber…
A rapid, highly efficient and green synthetic approach to polyol esters for lubrication oils is proposed. Using sulfuric acid and p-toluene sulfonic acid as a composite catalyst and C5–C9 straight-chain monocarboxylic acids, with pentaerythritol (PE) and dipentaerythritol (di-PE) as starting materials, a series of lub…
We have measured the Stokes drag on magnetic nanowires suspended in the nematic liquid crystal 4-cyano-4'-pentylbiphenyl (5CB). The effective drag viscosity for wires moving perpendicular to the nematic director differs from that for motion parallel to the director by factors of 0.88 to 2.4, depending on the orientati…
Magnesium doped ZnO polycrystalline thin film was deposited on p-type Si by sol–gel method, and the same was annealed at in oxygen rich environment. The magnesium doping in lattice structure of zinc oxide was examined by X-ray diffraction measurements. The dielectric phase transition observed at indicated the existenc…
Density functional theory (DFT) calculation on the molecular structures, charge distribution, molecular orbitals, electronic absorption spectra of a series of eight unsymmetrical phthalocyaninato zinc complexes with one peripheral (E)-2-cyano-3-(5-vinylthiophen-2-yl) acrylic acid substituent at 2 or 3 position as an e…
Cycloiptycenes are elusive and synthetically challenging molecules. We report the first synthesis of two substituted cyclododeciptycene tetraquinones via a sequence of intermolecular and intramolecular Diels-Alder reactions from cis,cis-heptiptycene tetraquinone 2 and substituted 7,16-dihydro-7,16-(o-benzeno)heptacene…
The Sm–Fe/polyvinylidene fluoride (PVDF) heterostructural film was prepared by depositing Sm–Fe nanoclusters onto the flexible PVDF film using cluster beam deposition method. The PVDF film acts as both piezoelectric layer and substrate. The heterostructural film showed the well-defined microstructures in which the Sm–…
We describe a general user-friendly platform for fine-tuning the drug release properties of low-molecular-weight hydrogels by a combination of supramolecular co-assembly of complementary molecular structures and controlled photochemical thiol–ene cross-linking. Other critical features such as thermomechanical stabilit…