Materials Literature
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This letter reports on the angular velocity of a freely rotating rigid sphere in a weakly viscoelastic matrix fluid subject to simple shear flow imposed at infinity. The three-dimensional creeping flow around the sphere is assumed steady and isothermal. The solution for the angular velocity, which is derived here is t…
NaZSM-5 zeolite was found to be an efficient heterogeneous catalyst for the synthesis of dimethyl carbonate (DMC), which can serve as a building block, an additive to fuel oil, and an electrolyte in batteries, via the transesterification of ethylene carbonate (EC) with methanol. Notably, 77% DMC yield and 97% selectiv…
In the present work, the effect of heat treatment parameters on microstructure and strength of the 30MnSi PC steel bars was investigated and analyzed systematically. The results show that the fine tempered martensite, thinning tempered troostite and tiny tempered sorbite can be obtained when quenching temperature reac…
The morphological and structural changes in Cu(In,Ga)Se2 (CIGS) thin films during selenization using diethylselenide (DESe) are investigated. The surface morphology and extra phase existence of CIGS thin films strongly depend on the heating profile temperature and time of each step during selenization. Conventional hi…
The paper aims to describe the simulations and measurements performed in order to determine the resistance of source and drain contacts of organic transistors with Polytriarylamine (PTAA) semiconductor. PSpice and MATLAB comparative simulations based on the analytic model are performed. The DC Sweep and parametric sim…
At the present, Portland cement-water glass double solution grouting materials have many problems, such as the instability of gelation time and of products, and poor groundwater-corrosion resistance performance, etc. A way to improve the performances of double solution grouting materials was studied by adding metakaol…
This paper studies the propagating characteristics of the electromagnetic waves through the coupled-resonator optical waveguides based on the two-dimensional square-lattice photonic crystals by the finite-difference time-domain method. When the traditional circular rods adjacent to the centre of the cavities are repla…
Cyclic stresses around welding joint-part affect the strength of mechanical components. In order to understand the fatigue phenomena caused by the cyclic stresses, non-destructive methods that can be related to number of stress cycles are necessary. In the present work, we used a newly developed scanning Hall probe mi…
The growth of Au-silica nanocomposite film is simulated in the framework of kinetic three dimensional lattice Monte Carlo simulations considering the basic phenomena in the deposition process. In case of co-sputter deposition, the growth kinetics of nanoparticles has been studied taking into consideration the effect o…
Nanocrystalline ZnS particles were prepared by hydrothermal method and characterized by XRD, FT-IR, TEM and UV-vis DRS and their photocatalytic activities were evaluated by the photodegradation of Eosin B under visible light. The results showed that the ZnS nanoparticles we prepared were in hexagonal phase, their aver…
New development in material and production technology influences the design of electrical machines. This paper presents a theoretical calculation and experimental verification of a single-phase semi claw-pole machine, which core is made of Soft Magnetic Mouldable Composite - SM2C. In comparison with a conventional cla…
We apply the “natural fueling mechanism” [W. Wan, S. E. Parker, Y. Chen, and F. W. Perkins, Phys. Plasmas 17, 040701 (2010)] to the edge pedestal. The natural fueling mechanism is where cold ions naturally pinch radially inward for a heat-flux dominated plasma. It is shown from neoclassical-neutral transport coupled s…
The alkaline pulping properties of wheat straw, which had been hemicelluloses pre-extracted with hot water, were studied. In this work, the process of hot-water extraction at various temperatures, reaction time and other conditions were investigated. The straws pre-extracted or not were made into pulp with NaOH-AQ at…
Light extraction effects of a photonic crystal slab with a micrometer scale lattice constant are studied. A GaN light emitting diode (LED) with a photonic crystal slab is fabricated. The light extraction effects and the enhancement mechanism are investigated. From theoretical analysis, it is found that the characteris…
In recent years, interest to active power filters has been increased. This paper presents a comparative evaluation for two types of harmonic extraction methods used widely for single phase shunt active power filters which are the p-q theory and the sine multiplying method. These control theories are investigated in de…
A technique for implementing monolithic resistors with near-zero temperature coefficient (NZ-TC) over a wide temperature range is presented. The typical structure of monolithic resistors contains a core resistor that is connected to the circuit interconnects through contacts. Typically, the temperature behaviour of co…
The interaction of dendritic cells (DCs) and T cells has been the cornerstone of approaches to cancer immunotherapy. Antitumoral immune responses can be elicited by delivering cancer antigens to DCs. As antigen presenting cells, these DCs activate cancer antigen specific T cells. Whereas the first part of the review d…
This paper will highlight recent developments of an efficient assembly technology for chip stacking which utilizes a novel wafer applied underfill (WAUF). The a-stage WAUF was spin coated on an 8” wafer with a bump structure of 5 um Cu / 3 um Ni / 5 um Sn2.5Ag Pb-free solder, and then baked at 125°C for 40 minutes to…
A method and experimental setup intended for measuring the amplitude and phase of acoustic field in the near zone of a scatterer are described. The results of measuring the scattering characteristics of low-frequency sound signals scattered by elastic cylindrical shells are analyzed.
A study has been carried out to understand the mechanism that enables plasma enhanced atomic layer deposition (PEALD)-grown RuTaN barriers to support direct (seedless) copper electroplating. In particular, the effects of changing the liner surface chemistry on the subsequent plated copper nucleation behavior have been…