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。
In energy generation, transmission and distribution systems, power transformers are one of the most common and important components. Consequently, the performance of these transformers is crucial to global efficiency of the systems. To optimize transformers efficiency, the selection of an adequate ferromagnetic materi…
In order to develop new-type multifunctional composite nanofibers, Eu(BA)3 phen/PANI/PVP bifunctional composite nanofibers with simultaneous photoluminescence and electrical conductivity have been successfully fabricated via electrospinning technology. Polyvinyl pyrrolidone (PVP) is used as a matrix to construct compo…
Abstract A nematic liquid‐crystalline elastomer enriched with carbon nanotubes (LCE‐CNT) is used to obtain an array of photosensitive actuators based on siloxane chemistry. By the combination of a molding technique together with the application of a controlled gas‐pressure during the crosslinking process, it is possib…
The effect of the modification of poly(lactic acid) (PLA) surface layer using corona treatment in air or nitrogen was evaluated by determination of oxidation degree, contact angle measurements and surface free energy calculations. It was found that as a result of corona discharge the degree of PLA surface layer oxidat…
Pulsed field magnetization is the most practical method of magnetizing a (RE)BCO bulk, however large heat generation limits the trapped field to significantly less than possible using field cooling. Modelling has been used to show that effective heat removal from the bulk interior, using embedded metallic structures,…
We present an ab initio approach for evaluating a free energy profile along a reaction coordinate by combining logarithmic mean force dynamics (LogMFD) and first-principles molecular dynamics. The mean force, which is the derivative of the free energy with respect to the reaction coordinate, is estimated using density…
The purpose of this study was to develop a rapid and green method for the synthesis of biomass-based materials. A microwave-assisted method was used for the preparation of CaCO 3 particles-filled wood powder nanocomposites, which involve natural cellulosic materials, CaCO 3 , and microwave heating. Dewaxed wood powder…
In this work, we present a numerical method that remedies the instabilities of the conventional FDTD approach for solving Maxwell's equations in a space-time dependent magneto-electric medium with direct application to the simulation of the recently proposed spacetime cloak. We utilize a dual grid FDTD method overlapp…
Yarn characteristics of pure cotton, 67:33 cotton/tencel blend, 33:67 cotton/tencel blend and pure tencel have been studied. Blending is done at draw frame. Machinery parameters are kept constant for studying the effect of fibre parameters on yarn characteristics. It is observed that the addition of tencel increases s…
YBa 2 Cu 3 O 7-δ (YBCO) films with a thickness of up to 3 μm containing nano-sized BaHfO 3 (BHO) have been grown on Y 2 O 3 /Y-stabilized ZrO 2 /CeO 2 buffered Ni-9at% W tapes by pulsed laser deposition (PLD). Structural characterization by means of X-ray diffraction confirmed that the YBCO layer grew epitaxial. A sup…
We have investigated peptide nucleic acid (PNA)-mediated aggregation of reduced graphene oxide (rGO) sheets. Addition of PNA into suspension of rGOs resulted in aggregation of rGOs, which could be easily detected with the naked eye. To elucidate the mechanism of rGO aggregation, we monitored the reaction by transmissi…
Based on careful consideration to crystal growth mechanism, three different sizes of Gd-Ba-Cu-O cylindrical bulk superconductors have been fabricated. The trapped magnetic field proportionally increased with the sample size and the peak heights at 77 K were 0.91-0.95 T, 1.38-1.51 T and 1.91-2.03 T for samples 30 mm, 4…
Superconducting c-axis oriented tetragonal FeSe films were grown on (001) MgO substrates. The transition temperature increased with film thickness and reached 10.5 K for a 2 μm film. The upper critical field, B c2 , was measured up to 14 T and then extrapolated to lower temperatures by an interpolation scheme based on…
The aim of the study was to investigate the optimization of the dissolution of tincal ore in phosphoric acid solutions at high temperatures in a batch reactor. The effect of the following parameters on the dissolution process was investigated: the reaction temperature, the phosphoric acid concentration, the particle s…
We studied effects of 3-MeV gold-ion irradiation on critical current density ( J c ) in YBa 2 Cu 3 O 7 films prepared by three different deposition methods: fluorine-free metal-organic deposition, thermal co-evaporation, and metal-organic chemical-vapor deposition. The three films showed strikingly distinct responses…
Large single-grained RE-Ba-Cu-O high temperature superconducting (HTS) bulk 150 mm in diameter was fabricated by employing the RE compositional gradient technique, where RE denotes rare-earth elements, and fracture strength in the super-large HTS bulk was evaluated at 77 K. No significant difference was observed for t…
ABSTRACT The effects of alkali oxide (K2O), calcium oxide (CaO) and ratio of silicon oxide to aluminum oxide (SiO2/Al2O3) on the thermal decomposition of biomass ashes and artificial ashes were examined by using thermogravimetric (TG) and derivative thermogravimetric (DTG) analysis. It was observed that mass losses du…
We report on microbubbles with a shell self-assembled from an anionic perfluoroalkylated surfactant, perfluorooctyl(ethyl)phosphate (F8H2Phos). Microbubbles were formed and effectively stabilized from aqueous solutions of F8H2Phos at pH 5.6-8.5. This range overlaps the domains of existence of the monosodic and disodic…
A simple method for the fabrication of gold nanorings with reliable material composition and reproducible morphology that relies on a combination of top-down and bottom-up techniques is presented. Here, lithographically defined hole arrays are used as templates for the deposition of gold nanoparticles. The resulting g…
To investigate the superconducting properties of iron pnictides we prepared planar hybrid SNS' junctions in thin film technology with a pnictide base electrode, a gold barrier layer and a lead counter electrode. Our design allows characterization of the electrodes and the junction independently in a 4-probe method. We…