Materials Literature
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Now-a-days use of nonlinear loads in industries has been increased tremendously which are the source of harmonic currents to be injected in supply system. These harmonics creates power quality issue. The most popular solution to eliminate these harmonics is Shunt Active Power Filter (SAPF) because SAPF can eliminate h…
The wear resistance of carbon steels strengthened by plasma hardening in an UDGZ-200 setup is studied using a friction machine. It has been found that the wear resistance of hardened low-carbon steel 15 is equal to ∼70% of normalized steel 45, as well as the wear resistances of the hardened medium-carbon steel 45 and…
Emeraldine base (EB) has been protonated with different concentration of para -toluene sulfonic acid (PTSA) to form doped polyanilines (PANIs). These samples have been characterized by various techniques and a detailed correlation between dopant concentration and structural, thermal, electrical and electromagnetic pro…
Instrument current and voltage transformers remain the basic apparatus used in measurements of energy in electrical grid. Increasing importance of distributed energy sources necessitates more precise measurements of consumed as well as generated electrical energy. Both types occur in low voltage network where the main…
The present communication is focusing on development of safe nanotemplates for sustained delivery of amphotericin B (AmB). We synthesized a block copolymer based on chitosan and Pluronic F-127 (PEO–b–PPO–b–PEO). Selection of Pluronic F-127 was based upon the criteria’s that it has smaller size, higher aqueous solubili…
The excitation and relaxation of spatially confined excitons in semiconductor quantum dots have been considered. The temperature dependence of the luminescence of quantum dots in dielectric matrices is described by the model taking into account the singlet-triplet intercombination conversion of spatially confined exci…
With recent technological advances at synchrotrons [Graber et al., J. Synchrotron Radiat. 18, 658-670 (2011)], it is feasible to rapidly collect time-resolved crystallographic data at multiple temperature settings [Schmidt et al., Acta Crystallogr. D 69, 2534-2542 (2013)], from which barriers of activation can be extr…
By using the technique of thermomechanical spectroscopy, an amorphous and three crystalline (high melting, intermediate, and low melting) blocks of the topological structures of polytetrafluoroethylene (PTFE) powder were characterized and their behavior under γ-radiation up to 2420 kGy was explored. The powder has an…
To clarify whether pattern waviness due to line-edge-roughness enhances wiggling, distortion of straight and wavy patterns was numerically analyzed by the three-dimensional (3D) elastic finite element method. Wiggling occurs only in wavy patterns but not in straight patterns at a stress or aspect ratio much lower than…
A brief overview about the use of carbon materials as metal free ozonation catalysts is presented. Carbon materials (activated carbons, carbon xerogels, carbon nanofibers and carbon nanotubes) have been shown to be active catalysts in the ozonation of a wide range of organic pollutants. Carbon materials with surface b…
The temperature dependent electrical properties of the dropcasted Cu2SnS3 films have been measured in the temperature range 140 K to 317 K. The log I versus √V plot shows two regions. The region at lower bias is due to electrode limited Schottky emission and the higher bias region is due to bulk limited Poole Frenkel…
During the sputtering process, the bombardment effect of negative oxygen ions (NOIs) on the thin-film properties of amorphous indium gallium zinc oxide (a-IGZO) was investigated. The energies of NOIs determined by in situ ion energy analyses are in good agreement with the values obtained using the Meyer equation. Furt…
Frictional drag reduction by microbubbles is a promising engineering method for reducing ship fuel consumption, especially for large, slow steaming vessels. Total resistance can be broken down into frictional drag and form drag (also known as pressure drag or profile drag). Ship's hull form optimization is commonly to…
Vinyltriethoxysilane (VTES) was polymerized and deposited on the surface of upholstery crust leather by using low-pressure cold plasma technology. After plasma treatment (50 W, 300 s), the initial water contact angle of the leather surface increased from 120 o to 140 o , showing a significantly improved hydrophobicity…
Electromigration (EM) greatly affects the long term reliability of VLSI chips. Not only power/ground (P/G) lines, but also bit-lines of SRAM arrays may be damaged by EM. In this work, we demonstrate that the EM reliability of an SRAM array can be dramatically worsened by process variation due to a significant increase…
Abstract The front cover artwork for Issue 3/2014 is provided by the Inorganic Chemistry and Catalysis group of Utrecht University. The image shows the concept of synchrotron‐based IR and UV/Vis microspectroscopy monitoring a catalytic reaction on a single SAPO‐34 crystal and the obtained spatially resolved informatio…
La2Zr2O7 as the thermal barrier coating material draws more and more attention because of its greater thermal physical properties than YSZ, while its further application is restricted by its poor mechanical properties. In this paper, certain ZrO2 is added into the La2Zr2O7 ceramics in order to improve its mechanical p…
In this work, the vacuum-assisted thermal deposition platinum (Pt) film was prepared and used as a counter electrode (CE) in dye sensitized solar cell (DSC). The films were characterized by scanning electron microscopy (SEM). Electrochemical catalytic activities of the films were also characterized by cyclic voltammet…
According to a deterministic formula, using the method of statistical modeling, it was found that the residual life of an oil and gas pipeline has a lognormal distribution, where the input arguments: Paris’ coefficients, the annual number of cycles, the diameter and the pipeline wall thickness, the initial and critica…
This study combines the template method and sol-gel method, prepares TiO2 photocatalytic materials with the cotton, leaves and towel gourd as the template, and then makes degradation of phenol in ultraviolet light with the prepared TiO2 photocatalysts. The results show that all the photocatalyst prepared with three ki…