Materials Literature
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The transport properties of the two-dimensional system in HgTe-based quantum wells containing simultaneously electrons and holes of low densities are examined. The Hall resistance, as a function of perpendicular magnetic field, reveals an unconventional behavior, different from the classical N-shaped dependence typica…
Sulfur dyes are applied on cotton to produce deep shades at low cost; they provide excellent color fastness, except against chlorinating agents. Sodium sulfide used as a reducing and solubilizing agent in this dyeing process is highly toxic and produces unhygienic hydrogen sulfide. In this study, alkaline protease was…
The porous Co 3 O 4 nanowires have been successfully synthesized via modified template method. A possible growth mechanism governing the formation of such 1D nanowires is proposed. The as-prepared products have been characterized by X-ray Powder Diffraction (XRD), Extended X-ray Absorption Fine-structure (EXAFS), High…
A microchemical system, including two micromixers and a delay loop, is specially designed to carry out the chlorohydrination of allyl chloride with chlorine in water. Chlorine is dissolved in water in the first micromixer and then reacts with allyl chloride to produce dichloropropanol in the second micromixer. The rea…
Abstract Titanate nanotubes (TiNTs) were prepared by alkaline hydrothermal processing. The TiNTs are thermodynamically unstable and easily transformed to the titania phase by heat or acid treatment. These phase transformations are affected by the preparation conditions. In this study, we investigated the effects of us…
Proinsulin processing into insulin and C-peptide in the secretory granules of the pancreatic β-cells occurs under mildly acidic conditions and at high peptide concentrations (> 10 mm). Mature insulin has reduced solubility and a propensity to adopt an amyloid-like structure, but is physiologically released as a mixtur…
A layer stack of strontium ruthenate/strontium titanate/strontium ruthenate was fabricated by low-rate rf sputtering. A high dielectric permittivity of approximately 200 at a capacitive effective thickness of 0.4 nm in combination with a very low leakage current densityJCof 5 × 10-9A/cm2at 833 kV/cm was achieved.JCis…
Bis(acetoxy)iodobenzene and related acyloxy derivatives of hypervalent I(III) were studied by variable temperature solution-state ¹⁷O-NMR and DFT calculations. The ¹⁷O-NMR spectra reveal a dynamic process that interchanges the oxygen atoms of the acyloxy groups. For the first time, coalescence events could be detected…
Abstract A novel ruthenium sensitizer TUS-20, which is a structural analog of black dye, bearing an ortho-dicarboxyphenylterpyridine as an anchoring unit to TiO2 surface has been synthesized. Adsorption rate of TUS-20 was much faster, and the maximum amount of dye adsorption was larger than that of black dye. The dye-…
A VO(2)(B) nanowire/CNT nanocomposite was fabricated with a stable lithium storage performance resulting in an interpenetrating porous network. This material demonstrated an enhanced Li-ion storage capacity with a significantly improved cycling stability. The capacity of the composite faded by only 6% after 100 cycles…
Several new bis-phosphine platinum(II) complexes with 2,5-diaryl-substituted oxazole-containing alkyne ligands have been synthesized and optically characterized in solution. Measurements of nonlinear absorption showed strong attenuation of laser light at 532 and 600 nm. The light absorption of the Pt complexes was shi…
Spontaneous formation of heterogeneous patches on the surface of lipid-based nanoparticles (NPs) and microparticles (MPs) due to the segregation of two different functional groups. Patch formation is observed when tracing the functional groups with quantum dots, gold nanoparticles, and fluorescent dyes. This discovery…
The efficacy of a potassium 12-phosphotungstate (KPW) catalyst in the synthesis of methyl 2-keto-L-gulonat from 2-keto-L-gulonic acid (2-KLGA) and methanol is investigated. The KPW catalyst gives high yields in short reaction times. The present procedure represents a clean, efficient, practical, simple, mild, time-sav…
Abstract The structure and characterization of the oligopeptide crystals formed from the feather keratin solution obtained by superheated water treatment are reported. The FTIR spectra and 1H and 13C solid‐state NMR results indicate that the peptides, arranged mostly in a beta‐sheet structure in feather, reorganize in…
We study Gilbert damping in bulk metallic ferromagnets containing magnetic and nonmagnetic impurities in the presence of nonuniform magnetization precession. In this model, a microscopic expression for the Gilbert damping tensor is obtained using the linear response theory with respect to the interaction between magne…
In this paper, a compact frequency selective surface (FSS) with low-pass and wideband high-stop response is presented. The FSS is composed of hexagon rings and placed in hexagon arrangement. At low frequencies below 2.0 GHz, the insertion loss is less than 0.9 dB. While in the stopband 8.0–18.0 GHz, the transmission i…
The electrical conductivity of undoped rutile ceramics is very dependent on sample processing conditions, especially the temperature and atmosphere during sintering and the subsequent cooling rate. Samples become increasingly semiconducting when quenched from temperatures above ~700°C without the need for a reducing a…
To formulate a self-nanoemulsifying drug delivery system (SNEDDS) for the oral administration of docetaxel as an alternative to commercial docetaxel-loaded injectable products, it was prepared by spray-drying an aqueous solution containing liquid SNEDDS and colloidal silica. Its physicochemical properties and oral bio…
Sprites are mesospheric discharges that carry significant electrical currents and produce electromagnetic radiation observed typically in the extremely low (ELF) to ultra low (ULF) frequency bands. In this letter, we present the first theoretical estimates of the electromagnetic radiation produced by individual sprite…
Interest in and the application of small specimen creep test techniques are increasing. This is because it is only possible to obtain small samples of material in some situations, for example, the scoop samples that are removed from in-service components, the heat-affected zones that are created when welds are used to…