Materials Literature
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High-quality Mg 0.4 Zn 0.6 O film with a ZnO buffer layer was prepared on glass by the reactive magnetron cosputtering method, and the MgZnO/ZnO homojunctions were fabricated into metal–semiconductor–metal middle ultraviolet (UV) photodetectors (PDs). The MgZnO-based PD with a ZnO buffer layer showed a high selectivit…
Single-phase epitaxial Nb doped BiFeO3 (BFNO) films have been grown on diverse oriented-SrTiO3 substrates by pulsed laser deposition. The orientation dependent surface potential distributions arising from combination of the screen and polarization charges on the BFNO surfaces were characterized by Kelvin probe force m…
Using an effective one-dimensional cluster expansion in combination with first-principles electronic structure calculations we have studied the energetics and electronic properties of Sb-Te layered systems. For a Te concentration between 0 and 60 at. $%$ an almost continuous series of metastable structures is obtained…
Abstract Two copper based biaxially textured alloys containing 0.37 and 0.91 wt.%‐Fe have been investigated for the use as substrate material for coated conductors. Average full width at half maximum (FWHM) values of 7.3° (CuFe0.37) and 6.8° (CuFe0.91) for in‐plane alignment and 7.2° (CuFe0.37, CuFe0.91) for out‐of‐pl…
We observed strong ferromagnetism in ZnCoO as a result of high concentration hydrogen absorption. Coating ZnCoO with Pt layer, and ensuing hydrogen treatment with a high isostatic pressure resulted in a highly increased carrier concentration of 1021/cm3. This hydrogen treatment induced a strong ferromagnetism at low t…
The resonance frequencies of cantilever carbon nanocones (CNCs) up to 4 nm in height are determined using molecular dynamics simulation based on adaptive intermolecular reactive empirical bond order potential. The frequency content of the free vibrations of CNCs under a lateral initial excitation at the tip is analyze…
We have performed a synchrotron radiation photoelectron spectroscopy (SR-PES) study on the mechanism of SO 2 decomposition on Pt/CeO 2 (111) model catalysts prepared on Cu(111). Resonant photoemission spectroscopy (RPES) was applied to monitor changes of the cerium oxidation state. Adsorption of SO 2 at 150 K on Pt/Ce…
Graphene nanoribbon and atomic carbon chain are allotropes of carbon, attracting tremendous attention from multidisciplinary areas ranging from nano physics to astrophysics. Here, first-principles calculations based on density-functional theory are carried out to study the ferromagnetic coupling in zigzag-edged graphe…
Abstract Application of biopolymers for biomedical applications limits with the functional and structural properties of the materials. Crosslinkers are used to provide the requisite properties. The question on biocompatibility of the existing crosslinkers necessitates the need for alternative crosslinkers. In the pres…
The present study provides a simple model to predict the favored phase of Cu 2 S nanosolids upon variation of their size, shape, and temperature. Insight into the phase stability at the nanoscale will aid in the design of new nanomaterials. A study of the solid–solid phase transition demonstrated that the low-chalcoci…
High-precision isothermal measurements on strongly preannealed metallic glass reveal a decrease of the shear modulus to the metastable equilibrium value both in the glassy state far below the glass transition and in the supercooled liquid state near Tg. The results obtained point out the existence of a low-temperature…
By measuring the drift velocity of electrons in diamond as a function of applied electric field, we demonstrate that ultra-pure diamond exhibits negative differential electron mobility in the [100] direction below 140 K. Negative electron mobility is normally associated with III–V or II–VI semiconductors with an energ…
Abstract Ternary polymer blends composed of poly(L‐lactic acid) (PLLA), poly(methyl methacrylate) (PMMA), and poly(ethylene oxide) (PEO) is used as matrix for nanocomposites with two clays: organically modified vermiculite (OVMT) and organically modified montmorillonite (Clo10A). The addition of PMMA in PLLA/PEO blend…
We have performed the temperature dependence of resistivity ρ(T) and thermoelectric power S(T) by a series of doping in layered cobaltites Bi2Sr2Co2Oy. For all samples, a metallic ρ(T) behavior and a large temperature-independent S is observed at higher temperatures, while we found a upturning ρ(T) but without corresp…
The electrical characteristics of zinc oxide ( ZnO ) varistors are closely correlated with the state of impurities, such as Bi 2 O 3 , at grain boundaries. To clarify the distributions of these impurities, the fracture surface of a Bi – Mn – Co – Sb – Si ‐added ZnO varistor was observed and characterized using scannin…
In this research work, we have used a microwave combustion method to synthesize three nanocrystalline ferrites including MnFe2O4, ZnFe2O4 and Mn0.5Zn0.5Fe2O4. For synthesis of these ferrites, a mixture of iron (III) nitrate, zinc and/or manganese nitrate, along with glycine, as fuel, was heated in a microwave oven for…
OleA is a thiolase superfamily enzyme that has been shown to catalyze the condensation of two long-chain fatty acyl-coenzyme A (CoA) substrates. The enzyme is part of a larger gene cluster responsible for generating long-chain olefin products, a potential biofuel precursor. In thiolase superfamily enzymes, catalysis i…
Abstract Silk fibroin (SF) films were prepared using a casting method and the change of secondary structure and crystal structure owing to treatment with ethanol–water mixtures of different concentrations was investigated by Fourier transform infrared spectroscopy and X‐ray diffraction. The results were used to reveal…
The insertion of chemically vapor deposited graphene layers between Al metallization and Si substrates and between Au and Ni metal layers on Si substrates is shown to provide a significant reduction in spiking and intermixing of the metal contacts and reaction with the Si, where the bilayer graphene was transferred to…
The synthesis and characterization of microtubes of SiMoW(11) Keggin polyoxometalates containing either an Mo(V) or Mo(VI) atom is reported. The introduction of a Mo atom into the Keggin-type tungstosilicate microtubes endows them with new properties. The Mo-substituted microtubes may exert both W and Mo functionaliti…