Materials Literature
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Boron-doped microcrystalline silicon oxide (µc-SiO x :H) films for application as a back surface field (BSF) in p-type silicon heterojunction (SHJ) solar cells have been characterized. We found that the µc-SiO x :H(p) film at the optimized condition shows high conductivity and good passivation effect with a low surfac…
Non-penetrating surface electrode recording techniques are typically associated with field potential recordings, while extracellular recordings from single neurons are made using penetrating metal wire or microfabricated microelectrode arrays. Here, we report on single- and multi-unit neuronal recordings made using no…
Based on 500kV power transformer, according to the mass-spring system model for the axial vibration of power transformer winding and its nonlinear characteristics, a calculation model is simplified, the modal simulation system of power transformer active part, which composes of core, windings, tensile plates and clamp…
Abstract This paper contributes to the development of physical vapour deposition multilayer coatings to resist erosion in corrosive environments. The influence of the deposition parameters of the bonding layer on adhesion has been investigated. Furthermore, the influence of the layer design on the corrosion resistance…
Fe3Si/FeSi2/Fe3Si trilayered films were grown on Si(111) substrates at a substrate temperature of 300 °C by facing-targets direct-current sputtering, and current-induced magnetization switching in current-perpendicular-to-plane geometry was studied for the films wherein an antiferromagnetic interlayer coupling perpend…
Cardiovascular medicine has benefited, both diagnostically and therapeutically, from dramatic advances that have occurred in catheter-based techniques. Today, as standardof-care, we routinely measure pressure and flow in vessels, cardiac chambers and across valves, image the vasculature at high resolution, and therape…
Tapered fibre tips fabricated using mechanical polishing method is studied. The fibre tips are formed by sequential polishing flat-ended single mode fibres with decreasing aluminium oxide polishing film grit size. Based on the proposed technique, tapered fibre tips with cone angle ranging from 30° to 130° are fabricat…
The radical oxidation of Ge(100) applying a dielectric barrier discharge plasma was investigated using metastable induced electron spectroscopy, ultraviolet photoelectron spectroscopy, and x-ray photoelectron spectroscopy. The plasma treatments were performed in a pure oxygen atmosphere as well as under environmental…
This paper addresses the evaluation of the high frequency effects for coreless transformers using PCB coils. First, analytical equations allow to compute the current density distribution over the cross-section of PCB conductors. The theoretical values of resistance and internal self inductance can then be estimated wi…
Mechanisms of gas breakdown initiation and development in the range to the left of the Paschen minimum are investigated in this paper. Experiments were conducted for gas pressures from 10-9to 10-1bar and inter-electrode gaps from 0.1 to 1 mm. The obtained results were subjected to the Chauvenet's criterion for discard…
Changes in the parameters of the crystal lattice and energy bands of CoSi2 nanofilms and nanocrystals formed in the surface Si layers by ion implantation combined with annealing are studied. It is shown that the band gap E g of CoSi2/Si(100) nanofilms with the thickness θ ≤ 40–50 Å is higher by ∼0.1 eV than for “thick…
The elastic properties of rare-earth cobaltites RBaCo4O7 (R = Y, Tm-Lu) have been experimentally studied in the temperature range of 80–300 K. The strong softening of the Young modulus ΔE(T)/E 0 ≈ −(0.1–0.2) of cobaltites with Lu and Yb ions has been revealed, which is due to the instability of the crystal structure u…
A novel sensitive chemiluminescence (CL) system ([Ag(HIO6)2]5--luminol reaction system), coupled with a flow injection, is introduced for determination of d-penicillamine. The system is based on the enhancement effect of chemiluminescence reaction by penicillamine in alkaline medium. Under the optimum conditions, the…
In this paper, both analytical lumped-circuit method and finite element analysis are employed to predict the temperature rises of two identical prototype surface-mounted permanent magnet machines when they are back-to-back connected mechanically and used as a motor and a generator, respectively. The predicted results…
We report on a model system for micromagnetic studies, i.e., ferrimagnetic Gd1−xCox thin films with controlled composition gradient and, therefore, a controlled magnetization gradient along the film. By employing extraordinary Hall effect measurements and Kerr microscopy, we have studied magnetization reversal and sho…
MicroRNAs (miRNAs) are a class of non-protein coding small RNAs that regulate a gene expression at the post-transcriptional level. Using in silico screening, we found that the 3'-untranslated regions of the P25 gene mRNA are perfectly complementary to nucleotides 2-8 at the 5' end of the miRNA-2b (miR-2b). The express…
Two iron(III)-containing amphiphiles 1 and 2 have been synthesized with the [NN'O] ligands HL(tBu-ODA) (2-((octadecyl(pyridin-2-ylmethyl)amino)methyl)-4,6-di-tert-butylphenol) and HL(I-ODA) (2-((octadecyl(pyridin-2-ylmethyl)amino)methyl)-4,6-diiodophenol), respectively. Compound 1 is monometallic, whereas EXAFS data s…
In this study, composite polymer electrolyte systems were prepared by the solution casting technique. The system consists of chitosan as the host polymer, lithium triflate (LiCF3SO3) as the dopant salt, ethylene carbonate and propylene carbonate as the plasticisers and different concentrations of fumed silica (SiO2) a…
We observe the imbibition of concentrated suspensions of rigid spherical particles into capillary tubes. We find that while the meniscus position advances according to the square root of time, the pre-factor of this “diffusive” scaling is smaller than that predicted by an ad-hoc extension of classical imbibition using…
WO 3 bulk and various surfaces are studied by an ab-initio density functional theory technique. The band structures and electronic density states of WO 3 bulk are investigated. The surface energies of different WO 3 surfaces are compared and then the (002) surface with minimum energy is computed for its NH 3 sensing m…