Materials Literature
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The presence of current harmonics in the grid causes major problems such as overheating and electromagnetic emissions. Active Power Filters (APF) have been presented as alternative to reduce such harmonics. In this paper, a new constant-frequency control scheme based on the linear decoupling principle is proposed for…
The concept of Green packaging material and biodegradable material is introduced in this paper. Biodegraded material is a kind of Green material, which is easily reclaimed and reused, it does not pollute the environment, and it can decompose quickly, there is not insurant to produce after trash. The main material star…
In variable speed drives thermal phenomena interfere with electromagnetic ones. Moreover, when it comes to electrical machines excited through permanent magnets (PMs), beside the common problems related to the stator winding insulation damage (at high levels of current densities) and mechanical stress (due to centrifu…
The goal of the study is to compare quality of lead-free vapour phase reflowed solder joints soldered on different printed circuit board (PCB) surface finishes. The solder joints quality comparison is based on evaluation of microstructure development of the solder, solder/PCB pad interface and on the measurement of th…
The paper deals with the search for and optimization of a method for preparing phase-stabilized ammonium nitrate as oxidant for solid propellants with environmentally friendly combustion products. The effect exerted on the energy of the V → IV and IV → III polymorphous transitions of ammonium nitrate by the total cont…
Biological properties of synthetic polymers can be improved by surface modification with the use of liquid oxidizers.A resorbable biomedical polymer -poly(glycolide-co-ε-caprolactone) (PGCL) was incubated in 0.1 M NaOH for 2, 6, 16, and 24 h, followed by excessive washing and drying in vacuum.Surface properties of the…
A novel light-trapping structure having a smooth surface likewise character ‘T’ (named as Type-T structure) is proposed for Si thin-film solar cells because the conventional structure based on the surface textures of transparent conductive oxide (TCO) film has crucial issues accomplished by surface roughening. The fun…
Oxygenated diesel fuel blends have a potential to reduce the emission of particulate matter (PM) and to be an alternative to diesel fuel. This paper describes a new kind of oxygenate additive, ethylene glycol monoacetate (EGM), and its effects on the characteristics of performance and emission of a compression ignitio…
Selenium-polypyrrole core-shell nanoparticles are fabricated by an in-situ polymerization process and functionalized with transferrin for targeting and imaging of human cervical cancer cells. The shell thickness and chemical composition of the as-synthesized particles can be manipulated by controlling the precursor co…
We are developing an experimental platform that can compress materials quasi-isentropically to very high pressures at ultrahigh strain rates. This laser driven, ramped (shockless) drive is used to study material properties such as strength, equation of state, phase, and phase transition kinetics under extreme conditio…
Nuclear fusion is nowadays one of the newest and most promising clean energies, composing a new application area of Control Engineering, with new and interesting challenges for the control community. In this sense, this paper deals with the modeling of tokamak nuclear fusion reactors. In order to control the creation…
Control of the size and spatial distribution of materials at multiple length scales is one of the most compelling issues in nanotechnology research. We report a multiple-length-scale patterning of pure magnetic particles as well as biocompatible magnetic particles based on a printing technique named micro-injection mo…
Abstract In this contribution Atom Probe Tomography has been applied systematically to characterise the homogeneity of mechanically alloyed Fe – Cu powders for two different compositions (Fe-10 at.% Cu, and Cu-2.5 at.% Fe). Fe – Cu is among the most attractive systems for technical application since it exhibits the In…
Magnetic and magneto-optical properties of the Ni-Ge bilayer films are studied. The unusual temperature behavior of the magnetization curves is revealed: the hysteresis loops at room temperature have a near-rectangular shape; when the films are cooled down to 4.2 K, the coercive force increases by more than an order o…
Thick film of silver decamolybdate (Ag6Mo10O33) was screen printed and thin film of chromium titanate Cr1·8Ti0·2O3+ δ was laser deposited on alumina substrates. Morphological features of the films were characterised and ammonia sensing properties were studied. Resistance of Ag6Mo10O33 thick films decrease on introduct…
Phase equilibria in the system Na,K|SO 4 ,CO 3 ,HCO 3 -H 2 O at 25°C are studied by the translation method. Thirty two double-saturation fields, 36 triple-saturation monovariant curves, and 13 quadruple-saturation points are distinguished in the system. The first closed phase diagram (phase complex) of the title syste…
Over 20 years have passed since the introduction of the tri-iodinated low-osmolar nonionic contrast agents such as iopamidol, iohexol, ioversol and iopromide. During this time, most cardiology practices have switched to these nonionic agents to avoid the nuisance side effects and cardiac adverse events associated with…
This reaction is connected to high overpotentials, which are in Zn electrowinning about 800 mV, or 20–25% of the total cell voltage, and with that an equal amount of the total electrical energy1. Many attempts have been made to reduce the overpotential by introducing better catalysts. The main anode systems are nowada…
Fluxless bonding between large silicon (Si) chips and copper (Cu) substrates using electroplated indium (In) and silver (Ag) as solders has been successfully developed. The nucleation mechanism in In-Ag system is first studied. It is interesting to discover that In reacts with underlying Ag and forms Agln2as soon as i…
Wide-gap (highly transparent), hydrogenated amorphous silicon oxide (a-SiOx:H) layers are investigated for heterojunction solar cell applications: Intrinsic a-SiOx:H(i) films are formed in order to prove their applicability for surface passivating buffer layers sandwiched between the crystalline silicon (c-Si) and the…