Materials Literature
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Scaling behavior of the quantum phase transition from an insulator to a quantum Hall plateau state has often been examined within systems realizing Landau levels. We study the topological transition in an energy-band model with nonzero Chern number, which has the same topological property as a Landau level. We find th…
A theoretical formula for the linewidth caused by thermal activation in a spin torque oscillator with a perpendicularly magnetized free layer and an in-plane magnetized pinned layer was developed by solving the stochastic Landau–Lifshitz–Gilbert equation in the energy-phase representation. It is shown that the linewid…
Arid soils pose unique problems during measurement and interpretation of particle-size distributions (PSDs) because they often contain high concentrations of water-soluble salts. This study investigates the effects of sulfate and carbonate minerals on grain-size analysis by comparing analyses in water, in which the mi…
A previous transmission electron microscopy (TEM) analysis revealed the existence of monoclinic Li2MnO3in the lithium-rich and oxygen-deficient Li1.07Mn1.93O4−δpowder. Interestingly, the monoclinic phase exhibits different nanoscale lamellar variants involving a rotation of the stacking direction by 120 or 240° along…
In this paper, we demonstrate that spoof surface magnon polaritons (SSMPs) can propagate along a corrugated perfect magnetic conductor (PMC) surface. From duality theorem, the existence of surface electromagnetic modes on corrugated PMC surfaces are manifest to be transverse electric (TE) mode compared with the transv…
Hollow SnO 2 –ZnO hybrid nanofibers are prepared by a single-nozzle electrospinning technique followed with subsequent heat treatment. The structure and morphology of the samples are characterized by x-ray diffraction, Fourier transform infrared spectroscopy (FTIR), scanning electron microscopy and transmission electr…
Introduction . Our investigation aimed to examine the influence of eco-friendly edible coatings composed of sodium alginate, olive oil and green tea extract (GTE) on improving the shelf life and nutritional quality of carambola (A. carambola L.). Materials and methods . The combinations and concentrations of composite…
Vibrational dynamics in triarylamine dendrimers was studied in a complementary way by Raman and infrared (IR) spectroscopies and incoherent inelastic neutron scattering (IINS). Three molecules were investigated, namely, unsubstituted triarylamine dendrimer of the first generation and two dendrimers of the first and se…
The antiferromagnetic ordered phase in ${\text{SmRu}}_{4}$${\text{P}}_{12}$ below the metal-insulator transition at ${T}_{\text{MI}}=16.5$ K with an unresolved transition at ${T}^{*}\ensuremath{\sim}14$ K has been studied by resonant and nonresonant x-ray diffraction in magnetic fields. In the intermediate phase, a no…
In endohedral metallofullerenes (EMFs), the carbon cage shields the endohedral species from the surrounding environment and can stabilize unusual clusters that otherwise would not exist. This review is focused on the behavior of the metal/π-system interface in EMFs under electron transfer conditions. We show that the…
This study aimed to test the hypothesis that the brain of Protopterus annectens expressed L‐gulono‐γ‐lactone oxidase ( gulo /Gulo), the enzyme catalyzing the last step of ascorbate biosynthesis, and could maintain high concentrations of ascorbate during estivation. We cloned and sequenced gulo from the kidney of P. an…
Safe water has becoming a competitive resource in many parts of the world due to increasing population, prolonged droughts, climate change etc. The development of economical and stable materials and methods for providing the fresh water in adequate amounts is the need of the water industry. Nanomaterials have unique c…
We have demonstrated the first example of carbon- and oxygen-free Cu(In,Ga)(SSe)2 (CIGSSe) absorber layers prepared by electrospraying a CuInGa (CIG) precursor followed by annealing, sulfurization, and selenization at elevated temperature. X-ray diffraction and scanning electron microscopy showed that the amorphous as…
An integrated tool is presented for the estimation of the microstructure of steels that consist of a mixture of ferrite and martensite following hot deformation processing. The model is based on phase transformation theory and shows good agreement with experimental data.
Dipalmitoylphosphatidylcholine (DPPC) and 1,2-palmitoyl-phosphatidic acid (DPPA) liposomes, prepared by conventional rotary evaporation method, have similar structural organization, though they have significant differences. The similarity is that both types of lipids create standard bilayer liposomes with strong hydro…
The dynamics of photoinduced electron transfer between polar acceptors and donors has been investigated in apolar solvents using femtosecond-resolved fluorescence spectroscopy. It was found to be ultrafast and to continuously accelerate by varying the excitation wavelength from the maximum to the red edge of the absor…
We investigated the effect of the thickness of a 3C-SiC buffer layer on the growth of GaN on a Si substrate. GaN samples with thicknesses of 2.0 and 4.5 µm were grown by metal organic vapor phase epitaxy. Islands were observed at the initial growth of the GaN samples, and they became larger and then coalesced with eac…
We apply first principles quantum mechanical techniques to the study of the solid solution Si1-xGexO2 of α-quartz where silicon atoms are progressively substituted with germanium atoms, to different extents, as a function of the substitutional fraction x. For the first time, the whole range of the substitution (x = 0.…
The Dualfoil model is used to simulate the electrochemical behavior and temperature rise for MCMB/LiCoO2 Li-ion cells under constant-resistance load operation, approaching a short-circuit condition. Electrolyte and solid surface concentration profiles of lithium-ion across the cell at various time scales are developed…
This research deals with the optimization of microwave assisted hydrodistillation (MAHD) of Lemongrass (cymbopogon citratus) by using response surface methodology. The constituents of extracted oil using MAHD was compared with the one obtained by conventional hydrodistillation (HD). The major constituent found in both…