Materials Literature
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Poly(quinoxaline-2,3-diyl)s bearing pyrene pendants exhibited solvent-dependent changes of the fluorescence color (blue and green) and the screw-sense selectivity (left-handed and racemic) in chloroform and 1,1,1-trichloroethane, respectively.
An undeca-nuclear nickel substituted POM, namely [Ni(H(2)O)(6)][Ni(11)(PW(9)O(34))(2)(IDA)(3)(en)(2)(Hen)(2)(OH)(6)]·(H(2)O)(7)·(H(2)en)(2) (1) (en = 1,2-ethylenediamine, H(2)IDA = iminodiacetic acid), was synthesized through hydrothermal reaction of Na(6)PW(9)O(34), en, H(2)IDA and NiCl(2)·6H(2)O. Single-crystal stru…
Room temperature Raman spectra of both PbFe0.5Nb0.5O3 (PFN) single crystal and ceramics were found to contain 14 bands, namely 64, 130, 200, 265, 427, 488, 560, 703, 785, 861, 971, 1123, 1236, and 1383 cm−1. For the first time distinct anomalies in the temperature dependences of frequency and/or full width at half max…
Needleless electrospinning: a practical way to mass production of nanofibers
Titanium dioxide (TiO 2 ) thin films having different thicknesses of 220, 260, and 300 nm were deposited onto well-cleaned n-type silicon substrates by reactive DC magnetron sputtering and annealed in the range of 200-1000 C in steps of 200 C. The effects of thermal annealing and thickness variation on the crystalline…
Los materiales de lengua y en particular los libros de texto son para los aprendices una fuente de exposición a la lengua y a la cultura. En los contextos multiculturales, estos se convierten en potentes herramientas que posibilitan los encuentros interculturales entre los individuos que poseen diferentes formaciones…
Unprecedented phenomena were discovered by tempering the Ti-4Fe-7Al alloy quenched from the β (bcc) field. The alloy became very hard when it was tempered at 450℃ for several minutes, and severely rugged surface was generated. The inverse shape recovery phenomenon was also discovered when a quenched specimen that had…
LaTi2Al9O19 (LTA ) 作为新有点热的障碍涂层(TBC ) 展出有希望的潜力材料，由于它的优秀高温度的能力和低热电导率。在这份报纸， LTA/yttria 稳定了氧化锆(YSZ ) TBC 被大气的血浆喷洒生产。热腐蚀行为和涂层的相关失败机制被调查。LTA 的分解不甚至在 1 458 个热腐蚀周期以后发生在 1 373 K，揭示在 Na2SO4 和 NaCl 的熔融的盐的好化学稳定性。然而，熔融的盐渗透到契约上衣，引起在熔融的盐和契约上衣的热腐蚀的热地成年的氧化物(TGO ) 溶解。作为结果， TBC 裂开发生在氧化物层以内。在结论，陶器的材料 LTA 和 YSZ 表明在 Na2SO4 和 NaCl 的熔融的盐的好化…
We present an effective method to generate second harmonic (SH) waves using nonlinear metamaterial composed of coupled split ring resonators (CSRRs) with varactor (variable capacitance) diodes. The CSRR structure has two resonant modes: a symmetric mode that resonates at the fundamental frequency and an anti-symmetric…
We report on depolarized and non-depolarized dynamic light scattering, static light scattering, and steady shear viscosity measurements on interacting charge-stabilized gibbsite platelets suspended in dimethyl sulfoxide (DMSO). The average collective and (long-time) translational self-diffusion coefficients, and the r…
Silver nanoparticles (AgNPs) have been reported to be useful in various medical and life sciences related application. It has received considerable attention in order to develop an efficient methodology for its synthesis. Conventional chemical synthesis is said to be harmful when used in medical related applications.…
A series of single-phased color-tunable phosphors Ca 9 Al(PO 4 ) 7 : xCe 3+ , yMn 2+ (0≤x≤0.03, 0≤y≤0.07) (CAP: xCe 3+ , yMn 2+ ) were synthesized by solid state reaction. The obtained phosphors exhibit a broad excitation band ranging from 250 to 350 nm and two emission bands centered at about 350 and 645 nm upon 315…
The effects of surface properties of S. cerevisiae strains 468/pGAC9 and 468 on adhesion to polyethylenimine (PEI) and/glutaraldehyde (GA) pretreated cotton (CT), polyester (PE), polyester + cotton (PECT), nylon (NL), polyurethane foam (PUF), and cellulose re-enforced polyurethane (CPU) fibers were investigated. Proce…
The energy management technology has been occupying the attention due to the requests for the high-efficiency energy use. Especially, the electric power management is the key issue in order to achieve the high-efficiency energy generation, transmission, distribution, and consumption. Therefore, the progress in power e…
Laddersiloxanes, that is, ladder silsesquioxanes with defined structures, could be obtained by stepwise synthesis starting from cyclic silanols. These compounds were shown to have high thermal stability. As an extension of the previous work, the first nonacyclic ladder silsesquioxanes were synthesized by the reaction…
Testing directly a magnetocaloric material in a magnetic refrigeration (MR) system is the best way to judge of its applicative potentialities. In this spirit, an oxide expected to show promising magnetocaloric properties around room temperature (Pr0.65Sr0.35MnO3) was produced in large scale and shaped in order to buil…
We describe the synthesis of macromolecular amphiphiles of various molar masses containing well-defined hydrophobic groups incorporating urea moieties. All compounds have the same proportion of associative hydrophobic groups and solubilising POE chains. However, a strong influence of both the number of associative gro…
Calcein was delivered from a functional coating into viable cells on top of it, upon the application of an electrochemical stimulus. The dye was loaded in liposomes stably embedded in a sandwich of polyelectrolyte multilayers. The covering multilayer was optimized with respect to its chemical composition to be resista…
Novel ordered mesoporous carbon/MoO 2 nanocomposites were prepared using one-step tri-constituent co-assembly method. From various structural and physical analysis, ordered mesoporous structure with homogeneous dispersion of MoO 2 in nanoscale was observed in as-prepared composites containing from 9 to 38 wt% MoO 2 ,…
Pressed pellets of polyoxometalate (POM)-based materials are shown to undergo morphogenesis to produce microtubular network architectures without the need for a large single crystal precursor. The compression of the POM material into a pellet lowers the solubility sufficiently to allow tube initiation and growth from…