Materials Literature
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We have studied the electrochemistry of the organosulfur compound, 4-amino- -1,2,4-triazole-3,5-dithiol (ATAD), as a potential cathode electroactive material for lithium-ion rechargeable batteries. The redox behavior was investigated via cyclic voltammetry, and the charge-transfer kinetics of ATAD were compared to tho…
High aspect ratio Fe 0.55 Co 0.45 alloy nanowires were fabricated by electrochemical deposition from sulfamate solution into nanoporous templates with diameters between 20 and 200 nm and lengths up to 6 μ m . The capability to fill narrow (down to 20 nm in diameter) and deep (micrometer size) pores with high magnetic…
The mechanism of an acidic hydrolysis of cellulose is investigated by means of the PM3 molecular-orbital method. The investigation is performed on a sample consisting of 8 monomeric glucose units. The activation energies for the reactions of attacks of hydronium ions on glycosidic bonds in different positions are dete…
Novel fibronectin (FN)-based ultrathin films were prepared by layer-by-layer (LbL) assembly. Among the various combinations of extracellular matrix (ECM) proteins and glycosaminoglycans (GAGs) such as FN, gelatin (G), alpha-elastin (E) and heparin (Hep), FN/Hep, FN/G and FN/E nanofilms were successfully fabricated in…
Epoxy-coated AA2024-T3 samples were exposed to solutions of specific chloride concentration and pH. Underfilm corrosion processes were monitored in situ with confocal laser scanning microscopy. In near-neutral solutions, pitting at both intermetallic compounds and within the alloy matrix was observed during coating bl…
Layered ternary ceramics represent a new class of solids that combine the merits of both metals and ceramics. These unique properties are strongly related to their layered crystal structures and microstructures. The combination of atomic-resolution Z-contrast scanning transmission electron microscopy (STEM) and transm…
Abstract The γ ‐substituted β ‐diketonate 2,4‐dioxo‐3‐pentyl 4‐[4‐( n ‐octyloxy)cinnamoyl]oxybenzoate 1 and its pyrazole and isoxazole derivatives ( 2 and 3 respectively) have been synthesized and characterized by the spectroscopic methods and elemental analysis. The mesogenic properties of these compounds have been s…
This paper presents the explosive problem of riser pole arresters during the operations of disconnector switches in the feeder having a station service transformer. In order to determine the cause and the practical solutions, field tests and computer simulations with ATP/EMTP program were conducted. The field tests re…
Using differential thermal analysis and x-ray diffraction, we have shown that the Bi2Te3-Bi2Se3 system contains a continuous series of solid solutions in a narrow temperature range and a compound of composition Bi2Te2Se below the solidus line. The liquidus and solidus lines determined using zone-melted samples differ…
Fine calcium phosphate powders were fabricated by using recycled cuttlefish bone. A raw cuttlefish bone easily turned to CaO by a calcining process and the calcined cuttlefish bone was mixed with phosphoric acid by a wet, ball-milling method. The crystalline phases of the heated mixtures were dependent on the mixing r…
The objective of this study was to clarify how internal and external fibrillation of kraft pulp fibres develop in refining and how they affect dry sheet properties. Different devices, including a Lampen mill, a PFI mill, a Voith laboratory refiner and a Masuko Super Masscolloider, were used to fibrillate fibres. Inter…
A Mn(16) wheel-like molecule made from the self-assembly of Mn "rods" in alcohol displays an S = 14 spin ground state and slow magnetisation relaxation consistent with single-molecule magnetism behaviour.
Freshwater diatoms belonging to the genus Eunotia Ehrenberg 1837 are well preserved in Middle Eocene lake sediments from the Northwest Territories, Canada. Although two distinct valve morphologies are recognized, both have features that are entirely compatible with modern congeneric taxa, including dorsiventral valve…
The technique of temperature dependent vibrational pumping in surface enhanced Raman scattering (SERS) has been recently demonstrated as a promising new tool to estimate SERS cross-sections. In this paper we expand on the previous developments and study several details around the implementation and physics of the vibr…
The effect of Cu substrate etching on electrical properties of electrochemically deposited CuO was investigated. Four different etching methods were compared in this study—no etching, chemically etched in , ex situ electrochemically etched in , and in situ electrochemically etched in the deposition solution. Surface r…
A novel method to obtain the dispersion diagram of a composite right/left-handed (CRLH) unit-cell is presented. This method is based on CRLH transmission-line (TL) theory and on the structure eigenfrequencies. First, it is shown that computing the dispersion diagram of an M unit cell CRLH TL only needs three eigenfreq…
We propose novel methods of depth-resolved EELS (DREELS) and chemical state mapping, and the techniques were applied to the cross-sectional TEM (XTEM) sample of N+ implanted TiO2 catalyst. DREELS is realized by applying the Pixon deconvolution to a conventional energy-filtering TEM (EFTEM)-based spatially resolved EEL…
Nonoxide glasses composed of halides and/or chalcogenides (sulfides, selenides, and tellurides) as their main components have been extensively investigated due to their characteristic structures and properties. Among them, the present review focuses on glass formation based on nonfluoride-halide (halides other than fl…
Despite limited spectral overlap and quite wide spatial separation, essentially quantitative electronic energy transfer occurs from peripheral Bodipy units to an expanded Bodipy core, the latter being attached via its B centre, so as to generate near-IR fluorescence.
The Bi-O interactions and the Bi lone-pairs in monoclinic BiB3O6 are investigated with gradient-corrected hybrid B3PW density functional theory within the Gaussian-orbital-based CO-LCAO scheme. The Bi 6s and O 2p orbitals contribute to both bonding and antibonding interactions below the Fermi level. The stereochemical…