Materials Literature
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Abstract The origins of dolocrete and associated palygorskite in the Çanakkale region of Turkey have been little studied, but are of fundamental importance for a more complete understanding of the mineralogy of this region. The present study was undertaken in order to narrow this gap. Siliciclastic red mudstones withi…
Dissipative particle dynamics with energy conservation (eDPD) was used to investigate conduction heat transfer in two dimensions under steady-state condition. Various types of boundary condition were implemented to the conduction domain. Besides, 2D conduction with internal heat generation was studied and the heat gen…
We developed a novel field-effect transistor (FET) type photorewritable memory using a photochromic interface layer between the active layer and the gate insulator layer. A diarylethene (DAE) derivative was employed as a photochromic material and pentacene was employed as an active layer. DAE has two types of photoiso…
tones of brown. Other colors can be introduced by modifying the occurrence or arrangements of particular lattice defects, either during growth or with post-growth treatments. In this study, we describe a group of strongly colored pink CVD lab-grown diamonds (e.g., figure Standard gemological properties and spectroscop…
We have synthesized composite of polyaniline nanotubes with lanthanum strontium manganite (La0.67Sr0.33MnO3) (LSMO) nanoparticles. Scanning electron microscopy, x-ray diffraction, Fourier transform infrared, and thermogravimetric analysis scans are done for morphological, structural, and thermal characterization of po…
The magnetic properties of Bi(Fe1 − x M x )O3(M = Mn, Ti) solid solutions have been studied in magnetic fields of up to 11.2 × 103 kA/m, and the composition stability range of the R3c ferroelectric phase has been determined. The results indicate that partial Ti4+ substitution for Fe3+ leads to a transition from a modu…
Numerous studies have pointed out the major role of microstructural phenomena in the nucleation of intra-granular crack nucleation during low cycle fatigue tests. Complex dislocation arrangements and rearrangements have been observed and different dislocation structures such as vein, ladder and/or cell structures have…
Programmed assembly: A unique supramolecular building block, a cyclic peptide facial amphiphile, predestined to self-assemble into a nanocapsule structure, has been developed (see figure). This general strategy will allow the easy construction of a variety of bioactive nanocapsules.
The influence of sand dust on the electrical discharge characteristics of outdoor insulation has drawn worldwide attention. Based on tests on the typical flat plate model, this paper presents research on the flashover characteristics of outdoor insulation in sand dust environment under ac and dc voltages, by means of…
Under the Platinum Development Initiative, platinum-based alloys were being developed for high-temperature and special applications for good corrosion and oxidation resistance. Parts I–III of the present series of papers dealt with the development of the ternary and quaternary Pt alloys (–). In this final paper (Part…
The geometric structure, band structure and density of states of pure, Ag-doped, N-doped, and N-Ag codoped wurtzite ZnO have been investigated by the first-principles ultra-soft pseudopotential method based on the density functional theory. The calculated results show that the carrier concentration is increased in the…
Problem statement: This study researched on different physical and optical properties of Nd3+ doped soda-lime-silicate glass. The glasses containing Nd3+ in (65-x) SiO2: 25Na2O: 10CaO: xNd2O3 (where x = 0.0-5.0 mol%) had been prepared by melt-quenching method. The density and molar volume increase with increasing of N…
A number of conjugated polymer systems can be generated via electropolymerization, including polythiophenes and polyanilines. While both have been reported to polymerize anodically via radical coupling, the presence of the aniline nitrogen plays a significant role in the mechanism of electropolymerization. In this stu…
Abstract A phase-field model is presented which is specially tailored for engineering-oriented application. It addresses multiphase, multicomponent alloys and considers lattice specific crystallographic anisotropy. Versatile application examples to magnesium alloys demonstrate the model's capability of handling import…
When ferritic stainless steels are exposed to the temperature range of 700–800 °C, embrittlement takes place, which is known as the σ-phase embrittlement. In the present study, axial fatigue tests were conducted using a high-chromium ferritic stainless steel, type 447 with the chromium content of 30.7%, which was aged…
Crystals of synthetic monazite-(Ce), and foils of the same material 1 μm thick, were irradiated with 1, 3.5, and 7 MeV Au ions, with total fluences in the range 0.6–51 × 10 13 ions/cm 2 . The triple irradiation resulted in surficial structural damage extending up to ~1.5 μm into the samples. The irradiation damage gen…
Efficient antireflection coatings (ARC) improve the light collection and thereby increase the current output of solar cells. In this work, multilayered refractive index stacks optimized for antireflection, in bare air and within modules, are modeled. The relation between porous silicon (PS) etching parameters and PS s…
This paper presents the analysis of leakage current evolution of an ice-covered station post insulator during a melting period using artificial neural network (ANN) models. The tests, carried out under wet-grown ice regime for different experimental conditions, showed that the permanent establishment of white arcs, id…
Polymeric tetraphenylbenzidine materials show two independent overlapping conductivity regimes (II and III on the conductivity profile in figure) upon electrochemical doping. Conductivity in these systems is attributed to one-electron hopping between the isoenergetic states of the two localized redox pairs. Bipolaroni…
The behavior of a water droplet on a silicone rubber plate was observed with a high-speed camera under ac voltage application. It was confirmed that a water droplet vibrated and that a remarkable deformation from the original droplet form occurred at the mechanical resonance frequency. Vibration frequency of an unchar…