Materials Literature
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Abstract This article provides an introduction to scanning ion microscopy, explaining how it overcomes one of the biggest limitations of SEMs, namely the tradeoff between spatial resolution and depth of field, while also providing significantly more surface detail, a wide range of novel and familiar contrast mechanism…
Fine tuning the properties of titanium alloys will be a major challenge for future light weight structural applications in the aerospace industry [1]. The near-β titanium alloy Ti-5553 of composition Ti-5Al-5V-5Mo-3Cr (mass-%) exhibits excellent harden ability and strength characteristics combined with high fracture t…
Micro, nano and atomic scale structure of Co-Al cermet prepared by mechanical alloying of Co-Al powders followed by hydrothermal treatment and calcination in the air were studied by X-Ray diffraction pattern (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM), energy-dispersive X-Ray spec…
As one increases the heating power in a tokamak beyond a threshold, the confinement undergoes a bifurcation, with a dramatic increase in the confinement time by a factor ~2. This improved confinement regime, or H-mode, is primarily due to the formation of an insulating region at the plasma edge, where steep pressure g…
Functionalisation of magnetic nanoparticles (MNPs) plays an important role in achieving their full potential in biomedical applications. The coupling strategy used for linking the functionalising agent to the particle is a key component for success and will depend both on the coating of the MNP and the available funct…
The aim of this study is to synthesize the ordered mesoporous silica (OMS) as drug carrier to improve release property of insoluble drug and investigate the dissolution profile of insoluble drug from the porous carrier. The OMS was obtained by using cetyltrimethyl ammonium bromide as the template and resveratrol was s…
The interaction of glycyl-L-leucine (L-I/H) with [(H2O) (tap)2RuORu(tap)2(H2O)]2+ (tap=2-(m-tolylazo) pyridine) has been studied spectrophotometrically in aqueous medium as a function of [(H2O) (tap)2RuORu(tap)2(H2O)2+], [glycyl-L-leucine], pH and temperature. The reaction was monitored at 600 nm where the spectral di…
Phosphorus doped C60 (P:C60) thin films were prepared by a radio frequency plasma assisted thermal evaporation technique using C60 powder as a carbon source and a mixture of argon and phosphine (PH3) gas as a dopant precursor. The effects of the plasma power on the structural characteristics of the as-prepared films w…
The fascinating phenomenon of destabilization of charge/orbital order in Nd0.5Sr0.5MnO3 with the reduction of grain size is critically investigated. Based on our magnetic and transport experiments followed by a theoretical analysis, we analyze various possible mechanisms and try to delineate a universal scenario behin…
ZnO nanowires have attracted a great attention as building blocks for the optoelectronic devices. For the practical optoelectronic applications based on the ZnO nanowires, synthesis technique of ZnO nanowire with layered structures is significantly important in order to achieve a p-n junction, a core/shell structure,…
Epitaxial MgAl2O4thin films were grown on Heusler alloy Fe2CrSi by reactive magnetron sputtering of a MgAl2target in an O2+Ar atmosphere. To grow MgAl2O4on Fe2CrSi, we inserted a protective layer of MgAl2between Fe2CrSi and MgAl2O4to prevent Fe2CrSi from being oxidized. Growth of MgAl2O4was found to be very sensitive…
Nanoporous Ti-metal film electrode was fabricated by radio frequency (rf) magnetron sputtering technique on nanoporous TiO2 layer prepared by sol-gel combustion method and investigated with respect to its photo-anode properties of TCO-less DSCs. The porous Ti layer (approximately 1 microm) with low sheet resistance (a…
Specimens made from Vanadis 6 cold work tool steel were machined, ground, heat processed by standard regime and finally mirror polished. After that, they were layered with CrAgN. The Ag-content in the layers was chosen to 3 wt% and 15 wt% respectively. Microstructural analysis revealed that the addition of 3 wt%Ag did…
During the severe accident in nuclear power plant (NPP), large amounts of fission products are released with accident progression, including In-vessel and Ex-vessel release. Thus, the Source term evaluation is essential for the probability risk assessment (PRA) and is still imperative for the licensing and operation o…
The organosolv pretreatment was performed on ”Pinus radiata” chips unbiotreated or biotreated by ”Gloephyllum trabeum”. Its effect on the structural characteristics of the material and therefore in the effectiveness of the enzymatic hydrolysis and fermentation was evaluated. The influences of organic solvents, reactio…
The temperature dependences of resistivity and thermopower measurements reveal that nanocrystals of silicates in lead-silicate glass of various compositions undergo structural transitions in the temperature range of 800 – 1000 K. The diameter of these nanocrystals estimated from Scherrer’s formula is about 0.8 – 1.6 n…
ZnS thin films were deposited on glass substrates using chemical bath deposition. The zinc sulfate and thiourea were used as precursors along with a stable complexing agent of sodium citrate in ammonia/ammonium chloride (pH=10.5) buffer solution. The ratio of Zn and complexing agent was changed from 6:1 to 1:1 by vary…
The structure of amorphous linear-chain carbon (LCC) during the structure formation under conditions of vacuum annealing was studied by electron diffraction and Raman spectroscopy methods. It was shown that the determining factor of lowering the work function of the LCC coating is the formation of nanoclusters of mutu…
In this paper, a novel control method named active harmonic resistance(AHR) which is used to suppress the resonance between the power capacitor and system inductance is proposed. The power capacitor is series with an inductor, which id paralleled with the converter applying AHR control method, which means that the con…
The results of studying the effect of nitrogen ion-beam implantation on the adhesiveness of the WC-8Co hard alloy have been discussed. The indentation of a rotating indenter into a counterbody has been used to measure the adhesion component of the friction coefficient, which has been shown to decrease in the surface m…