Materials Literature
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We propose a theoretical model for ice growth under a wind-driven supercooled water film. The thickness and surface velocity of the water layer are variable by changing the air stream velocity. For a given water supply rate, linear stability analysis is carried out to study the morphological instability of the ice-wat…
Designers of nano-scale magnonic devices would benefit from methods of their evaluation that do not require one to access the microscopic level of description or to construct device prototypes. Here, we propose a numerical micromagnetics version of such a method, in which magnonic devices are considered as two-port li…
NiCrAlY coatings were deposited on Ni-based superalloy by high-velocity oxygen-fuel spraying (HVOF). Surface modification by means of grit-blasted, shot-peened and ground methods was used in order to study the effect of surface conditions on the isothermal oxidation behavior of HVOF-sprayed NiCrAlY coatings at 1 050 °…
Nanosized alloy nitrides or alloying element (M)–Nitrogen(N) cluster formed in plasma nitriding of Fe–M binary alloys were investigated by means of high resolution TEM. Specimen surface of the Fe–Cr alloys was hardened by the formation of disk shaped CrN of NaCl structure, which is ∼2 nm thick and 10 nm in diameter. I…
The Supercontainer design is the preferred option for the underground disposal of high level nuclear waste in Belgium. It consists of a carbon steel overpack surrounded by a thick concrete buffer. In this high alkaline environment and under normal conditions (without the ingress of aggressive species), the carbon stee…
This study introduces innovative multi-chip white LED systems that combine an InGaN blue LED and green/red or green/amber/red full down-converted, phosphor-conversion LEDs (pc-LEDs). Efficient green, amber, and red full down-converted pc-LEDs were fabricated by simply capping a long-wave pass filter (LWPF) on top of L…
Abstract: The mollusc Watsonella crosbyi was studied on the basis of material from the lower Cambrian Dahai Member of the Zhujiaqing Formation in eastern Yunnan, China and the Pestrotsvet Formation of the Aldan River region in the Siberian Platform. This fossil had been excessively described under different names in t…
The results of our study provide the magnetic switching behavior of a curled up Ni magnetic structure in comparison to the initially flat magnetic film. We used e-beam lithography, an electron beam evaporation system, and a wet etching technique to fabricate the magnetic curled up structure. Because of the different t…
The effects of annealing at high temperatures on polymer solar cells consisting of conjugated poly(3-hexylthiophene) (P3HT) and fullerene derivative [6,6]-phenyl-C61 butyric acid methyl ester (PCBM) composites with high concentrations of 3 and 5 wt % are reported. As compared with as-casted samples, the optical intens…
A mechanism of the transformation of crystal lattices of borides under liquid boronizing of steels has been investigated. It has been shown that nonstoichiometric borides with an FeB or Fe 2 B structure were the structure-formation element of phases in the hardened layer. The origin of the high rate of the formation o…
Abstract This study briefly reviews various influencing factors governing stress corrosion cracking (SCC), cracking mechanisms, and a few conventional crack detection or evaluation techniques. An improved crack growth model was developed and parametric studies were conducted to model SCC growth in ammonia tanks contai…
We firstly propose a novel U-shape resistive cell structure which is the best fit for generating low power resistive random access memory (RRAM) with forming-less process. We find that irregular resistive switching behavior in the initial transition and the characteristics associated with it. Controlling the conductin…
Partial-thickness burn wounds can heal spontaneously, but full-thickness burns require skin grafting for definitive wound closure. Historically, the gold standard for closure of excised full-thickness burns is split-thickness skin autograft. Patients with very large burns have limited donor sites for harvesting of aut…
We investigated zinc oxide (ZnO) thin films prepared by plasma-assisted atomic layer deposition (PA-ALD), and thin film transistors (TFTs) with the ALD ZnO channel layer for application to next-generation displays. The dependences of the electrical characteristics of the fabricated TFTs on the plasma condition were ev…
We investigated high catalytic activity of Ni/HZSM-5 catalysts synthesized by the impregnation method, which was successfully applied for low-temperature steam reforming of bio-oil. The influences of the catalyst composition, reforming temperature and the molar ratio of steam to carbon fed on the stream reforming proc…
Using the gamma-ray attenuation technique, the density of the condensed state of lithium is measured within the range from room temperature up to ∼700 K. The purity of the investigated lithium is as high as 99.95 mass %. The confidence error of experiments is within 0.3%. From the experimental results, the volume ther…
Based on a nonpolar polymer—i.e., high-density polyethylene, polar polyvinylidene fluoride, and di-π-cyclopentadienyl iron (π-(C 5 H 5 ) 2 Fe, ferrocene)—matrix composites are obtained that exhibit the conductivity photoquenching effect. Charge states and photoelectret and photoconductive properties of films of these…
A CdS buffer layer is commonly used in high efficiency Cu(In,Ga)Se2 (CIGS) solar cells. The CdS layer is typically prepared by chemical bath deposition. From the viewpoint of the environmental impact of Cd and the need for in-line processing for mass production, there is a need to find an alternative to wet-chemically…
The microstructures of steels consisting of ferrite (steel 1) and bainite (steel 2) were characterised using atom probe tomography. The microstructural features, such as formation of Nb–C clusters in steel 1 fine Fe–C particles, were observed.
Problem statement: Recently, many scientists looking for new chalcogenide materials for the solar cell applications. Nowadays, silicon-based solar cell became dominant products in the market. Because of expensive silicon-based solar cells, scientists hope replaces it with cheaper chalcogenide materials. Approach: The…