Materials Literature
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[FeLX 2 ]Y [L = N,N '-ethylenebis(salicylimine) (salen), N,N '-ethylenebis(acetylacetonylimine) (acen), or N,N '-ethylenebis(3-methyloxysalicylimine) (vanen); X = imidazole or N -methylimidazole; Y = BF 4 , ClO 4 , or BPh 4 ] compounds have been prepared and studied by means of EPR and magnetic susceptibility measurem…
Polyaniline (PANI) was successfully deposited by means of cyclic voltammetry technique from 0.10 M aniline containing 0.30 M oxalic acid and 1 g/l H3BO3 solution on AISI 4140 steel electrode. In this investigation nominate scan rates 25, 50, 75, and 100 mV/s have been examined. PANI film was characterized using optica…
In carbon nanotube (CNT) arrays, unequal current contribution from each emitter to the overall emission current would lead to non-uniform field emission (FE) performance and emitter failure. Therefore, we propose a novel field emission microscopy (FEM) method that allows us to visualize and record the FE performance o…
TiO 2 , B 2 O 3 , H 3 BO 3 , B 4 C and carbon black were used as the raw materials to prepare TiB 2 powders by carbothermal reduction method. The influence of different content of carbon black (13.6~14.8 wt%) on products was discussed. The effects of different boron sources and holding time (10~50 min) on the microstr…
Adsorption of influenza A viruses and their antibodies on golden surfaces, thin films of polyaniline and polyaniline complex with polysulfonic acids, has been studied. The composition of interpolymer complexes was found to influence both the surface relief of synthesized films and the adsorption efficiency. Moreover,…
Duplex stainless steels when subjected to temperatures above 600 ° C have its tenacity decreased by the formation of sigma phase. This phase has high hardness and is rich in chromium and reduces the matrix of this element. In this study, field line density measurements, obtained in the reversibility region of magnetic…
Based on the coherent potential approximation, the method of calculating the electronic structure of nonstoichiometric and hyperstoichiometric compounds with strong electron correlations and spin-orbit coupling has been developed. This method can be used to study both substitutional and interstitial impurities, which…
The influence of the holding time upon annealing on the temperature of the viscous–brittle transition (temperature of embrittlement) T f in a cobalt-based amorphous alloy of the composition Co69Fe3.7Cr3.8Si12.5B11 with a very low saturation magnetostriction λs (<10–7) has been studied. It has been established that the…
Polymeric nonionic surfactant pluronic P123 significantly increases the distribution ratio of nanodiamonds in the aqueous-organic liquid systems.
H. Xu, J. Zhang, and co-workers synthesize anisotropic 2D-layered rhenium disulfide with high crystal quality and uniform monolayer thickness. As described on page 5019, tellurium-assisted epitaxial growth on a mica substrate is chosen to generate such structures.
A geometrical model of the well-known “mattress” effect, which is similar to the one observed at the opening of an umbrella, is built. The main hypothesis is that the surface of metallic mesh of a parabolic reflector takes a form closed to the minimal surface in the isotropic case. The fact that, for the orthotropic m…
SiOC ceramic as anode material for lithium ion batteries has received extensive attention recently. In this work, polycarbosilane and polymethylhydrosiloxane were used as precursor polymers through a curing, pyrolysis and ball-milling progress to synthesize three kinds of ceramic powders with different components note…
Polymer nanocomposites, when prepared and treated carefully, have the potential to offer many advantages over the current materials used in high voltage applications. Four materials have been prepared containing 2 wt%, 5 wt%, and 10 wt% of hexagonal boron nitride nanofiller, including an unfilled material based on a p…
S E Borjas-García, A Medina-Flores, L Béjar, P Martínez-Torres, N Dasgupta-Schubert, J L Bernal; Synthesis of Mesoporous Ceria by Using CTAB as Template, M
In this research several optimization methods were used to determine the optimal design for a corona ring. The following methods were utilized: Nelder-Mead, COBYLA and BOBYQA. In addition, a software based on the Finite Element Method was used to perform electric field simulations. Results show that the optimized coro…
Internal insulation defects of oil-immersed transformers are common because of flaws in both manufacturing and transportation process. Partial discharge (PD) activity caused by insulation defects may occur at rated voltage condition, leading to deterioration of material, which results in breakdown of insulation. Featu…
Hybrid solar cells with ITO/AZO/ZnS/P3HT/PCBM/Ag structure were fabricated so that, in the synthesis of the ZnS layer, the successive ion layer absorption and reaction (SILAR) technique was used. At first, Al-doped ZnO (AZO) layers with different molar concentrations of Al were deposited on ITO-glass substrates, and t…
Matthew J Cabral, Shujun Zhang, Elizabeth C Dickey, James M LeBeau; Direct observation of local chemistry and local cation displacements in the relaxor fer
Ronald Vane, Ewa Kosmowska; Remote Plasma Cleaning and Radical Recombination Rates, Microscopy and Microanalysis, Volume 22, Issue S3, 1 July 2016, Pages 4
In this study, polyindole (PIN) and polystyrene/polyindole (PS/PIN) composites were synthesized by chemical polymerization using FeCl3 as an oxidant agent. The conductivities of PIN and the composites were measured with a four-probe technique. The conductivity of PIN was determined as 5.1 × 10 –3 S cm –1 , whereas the…