Materials Literature
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As Cr (VI) compounds used to formulate conversion layers provide enhanced anticorrosive protection to zinc coatings, but they are produced using hazardous chemicals, the development of "green" technologies is a paramount purpose. Consequently, the corrosion behavior of zinc coatings subjected to a Cr 3+ based passivat…
CNTs are hollow cylindrical tubes made up of carbon, having a very high aspect ratio (length/diameter). They have one, two or several concentric graphite layers, capped by fullerenic hemispheres. The single-walled CNTs (SWCNTs) and multi-walled CNTs (MWCNTs) are the most commonly used CNTs (Figure 1), although double-…
An electrochemical probe station (EPS) for automated electrochemical testing of electronic-grade thin films is presented. Similar in design to a scanning droplet cell, this modular system features a flexible probe tip capable of contacting both metallic and oxide surfaces. Using the highly sensitive Pt-H 2 SO 4 system…
This research aimed to achieve HCl removal for chlorine-containing hot coal gas by using supported oxide sorbents in a fixed-bed reactor at 673–873 K. Mn2O3/SiO2 was chosen as the optimal sorbent to eliminate chlorine species, after thermodynamic screening of the dechlorination potential of sorbents based upon various…
Two methods are used to simulate electronic structure of gallium arsenide nanocrystals. The cluster full geometrical optimization procedure which is suitable for small nanocrystals and large unit cell that simulates specific parts of larger nanocrystals preferably core part as in the present work. Because of symmetry…
Since the Fukushima nuclear disaster in Japan, nuclear energy has been under increased media scrutiny. The focus is mainly on Germany and the radical transformation of the position on nuclear energy in that country. To understand and potentially predict the development, however, the situation needs to be viewed from a…
Homopolymers of β-lactams can be grown by surface-initiated polymerization. These surface-linked β-peptides are living polymers with the potential to be utilized as tunable, protease-resistant interfaces in multiphase structural composites where the characteristics of the interface influence bulk properties.
Hydrothermal synthesized lead titanate powder was prepared in a Teflon-lined stainless steel bomb. Calcium fluoride (CaF2) and titanium dioxide (TiO2) were separately adapted as intermediate layers on p-Si (100) substrates. The microstructures of TiO2 and CaF2 layers were examined by FESEM. Lead titanate (PbTiO3) film…
A small vicinity of a contact line, with well-defined (micro)scales (henceforth the “microstructure”), is studied theoretically for a system of a perfectly wetting liquid, its pure vapor and a superheated flat substrate. At one end, the microstructure terminates in a non-evaporating microfilm owing to the disjoining-p…
It has been well known that BiFeO3 (BFO) exhibits two interesting physical properties simultaneously, which invoked multi-ferroic device applications to change electrical properties by controlling magnetic properties of BFO or vice versa. However, BFO has a high leakage current density, which may be attributed to bism…
The purpose of this work was to determine the optimal duration of free swelling for refined unbleached kraft pine pulp. Free swelling is the effect of water sorption by cellulose fibres without their simultaneous mechanical treatment (e.g. refining). The second purpose was to determine the possibility of improving the…
Nd12.3Fe81.7−xTixB6.0 (x = 0.5–3.0) ribbons have been prepared by rapid quenching and subsequent annealing treatment. Effect of Ti substitution and annealing treatment on the microstructure, magnetic properties, and crystallization behavior of the ribbons was systematically investigated by the methods of differential…
Atomic layer deposition (ALD) of TaN was intensively studied for barrier metal in Cu line and Cu via separately by utilizing single damascene (SD) structure. As a barrier metal for via, thin ALD TaN 0.7 nm is insufficient to suppress dissolution of Cu seed during electrochemical plating, resulting in poor filling prop…
The characteristics of a Pd/AlGaN/GaN high electron mobility transistor (HEMT) processed using the sensitization, activation, and electroless plating (EP) deposition approach are studied and demonstrated. A dense and uniform Pd seed layer is achieved by using the additional sensitization and activation processes. Ther…
This paper is focused on the formation and recovery of cadmium sulfide (CdS) nanoparticles in two different types of polycation‐modified reverse microemulsions using low molecular weight poly(diallyldimethylammonium chloride) (PDADMAC) and poly(ethyleneimine) (PEI). Both polymers were incorporated in a quaternary w/o…
Ductile ultrafine-grained composites in Ti66Nb18Cu6.4Ni6.1Al3.5 alloy with high Nb/Ti ratio were fabricated by spark plasma sintering and crystallization of amorphous phase. Microstructure observations shows that all alloys encompass body-centered cubic β-Ti and face-centered cubic (Cu, Ni)-Ti2 regions but display dif…
In this study, an Atomic Force Microscopy (AFM) roughness analysis was performed on non-commercial Nitinol alloys with Electropolished (EP) and Magneto-Electropolished (MEP) surface treatments and commercially available stents by measuring Root-Mean-Square (RMS), Average Roughness (Ra), and Surface Area (SA) values at…
Synthetic approach to a new substituted tetrathieno [2,3-b]porphyrazine, its planar and sandwich-type complexes was developed. Aggregation phenomena and spectral properties of the target compounds were investigated by UV-Vis spectroscopy and AFM. Electrochemical behaviour of the Zn complex was studied in a wide range…
The effects of grain size reduction on the corrosion inhibition of sodium nitrite were investigated using polarization curves and electrochemical impedance spectroscopy (EIS). Nanocrystalline iron (~ 45 nm) was produced by pulse electrodeposition using citric acid bath. The grain size of a nanocrystalline surface was…
Mo-Fe heterometallic complexes with Fe(X)(2) (X = Cl, SPh) moiety attached to monodithiolene oxomolybdenum via sulfur bridge, viz., [Ph(4)P](2)[Cl(2)FeS(2)MoOS(2)(DMED)] (2) (DMED, dimethylethylenedicarboxylate), [Ph(4)P](2)[Cl(2)FeS(2)MoO(tdt)] (3) (tdt, toluenedithiolate) and [Ph(4)P](2)[(SPh)(2)FeS(2)MoO(tdt)] (4)…