Materials Literature
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Abstract The corrosion behavior of Ti–5Ag–xFe alloys (x = 1, 2.5, 5 wt%) in neutral saline solution was investigated by the open‐circuit potential (OCP), potentiodynamic polarization, electrochemical impedance spectroscopy (EIS), and potentiostatic tests. The microstructural observation indicated that β‐Ti phase was r…
The synthesis and liquid crystalline properties of new dimers with triphenylene donor (D) core tethered via a flexible spacer to a monofunctionalized anthraquinone acceptor (A) core, D-A, are reported. These dimers have hydroxyl (D-A(OH)) or acetyloxy (D-A(OAc)) functional group. The linear trimers, D-A-D, are also re…
A phospholipid-protein hybrid nanostructure was found to reveal various hydrodynamic diameters dependent on the amount of the drugs incorporated, which could be over 10 times larger than that of the starting nanostructure. This observation was likely related to the thermal stabilization of the nanostructure during inc…
A high efficiency dye-doped cholesteric liquid crystal (CLC) is demonstrated by optimizing the dye concentration and using an electrically tunable nematic liquid crystal (NLC) phase retarder. The state of polarization of laser emission in CLC lasers, contrary to our expectations, due to the refractive index mismatch a…
Abstract Hydroxyapatite (HAp) nanoparticles synthesized via microwave irradiation. Polypyrrole (PPy)/HAp nanocomposite was obtained using electropolymerization on nitinol (Ni) titanium (Ti) substrates. Fourier transform infrared was employed to characterize the nanocomposite formation. Electrochemical properties of th…
In spite of numerous papers dedicated to the subject, the behavior of the helical pitch in the smectic C* phase near the smectic A phase is still controversial. In particular, it is not clear to what extent the measured pitch values are influenced by surface effects. In order to shed light on this problem, careful pit…
We investigate the low-temperature electron, lattice, and spin dynamics of ${\text{LaMnO}}_{3}$ (LMO) and ${\text{La}}_{0.7}{\text{Ca}}_{0.3}{\text{MnO}}_{3}$ (LCMO) by resonant pump-probe reflectance spectroscopy. Probing the high-spin $d\text{\ensuremath{-}}d$ transition as a function of time delay and probe energy,…
As the current global environmental concerns have prompted regulations to reduce the level of aromatic compounds, particularly benzene and its derivatives in gasoline, ydroisomerisation of n-alkanes is becoming a major alternative for enhancing octane number. Series of solid acid catalysts comprising of Freidel crafts…
The growth of Cu 2 O crystallites electrodeposited in a nitrate bath with sodium dodecyl sulfate (SDS) under superimposition of a high magnetic field up to 12 T was investigated. Scanning electron micrographs show that the morphology of the crystallite changes from a starlike shape to a well-faceted octahedron with ma…
Previously we reported the synthesis of unique nanotubular bimetallic oxides, ZrO 2 −TiO 2, in supercritical carbon dioxide (scCO 2 ). This study examines the role of the solvent on crystal growth by synthesizing the bimetallic nanomaterials using several common sol−gel solvents of varying dielectric strength, includi…
We demonstrate a versatile approach to align lamellar lyotropic mesophases with the use of magnetic fields. It is based on continuous rotation of the sample on an axis perpendicular to the magnetic field direction during a single cooling ramp across the order-disorder transition of the system. The process yields mater…
Catalytic pyrogenation of methane gas in the presence of Ni nanoparticles was employed to synthesize C/Ni composite nanoparticles at various reaction temperatures. The Ni nanoparticles prepared by the arc-discharge method served as a catalyst to decompose the hydrocarbon molecules and also provided isolated templates…
We report here for the first time on the synthesis of nanoparticles of the p-type transparent conductor LaOCuS. Nanoparticles were obtained via a solvothermal route in ethylenediamine with dehydrated lanthanum chloride (LaCl(3).7H(2)O), copper monooxide, and elemental sulfur as precursors. Powder X-ray diffraction, sc…
PURPOSE: To evaluate in a rat brain glioma model intraindividual tumor enhancement at 1.5 T using gadobutrol (Gadovist), a nonionic, macrocyclic chelate currently in clinical trials in the United States, in comparison with both an ionic macrocyclic chelate, gadoterate meglumine (Dotarem), and an ionic linear chelate,…
The developing chemical depth profile in an epoxy adhesive bulk (with varying amine content) is monitored during aging by FTIR microspectroscopy on sample cuts prepared with low angle microtomy. Three aging regimes are applied in order to separate the role of temperature and water: dried or moist air (90% rel. humidit…
To design a novel cytospecific photosensitizer for photodynamic antitumor therapy, a fullerene (C(60)) was chemically modified with pullulan which is a water-soluble polysaccharide with a high affinity for asialoglycoprotein receptors. Ethylene diamine was introduced to the terminal aldehyde groups of pullulan by the…
A novel series of double hydrogen bonded liquid crystals have been isolated. Hydrogen bond was formed between non mesogen ingredient succinic acid and mesogenic p-n alkoxy benzoic acids. Phase diagram was constructed from the transition temperatures obtained by differential scanning colorimetry (DSC) and polarizing op…
We have performed combined angle-resolved photoemission spectroscopy (ARPES) experiments and density functional theory (DFT) calculations of the electronic structure of the Ir(111) surface, with the focus on the existence of energy band gaps. The investigation was motivated by the experimental results suggesting Ir(11…
Off-plane scattering of time-harmonic plane waves by a plane diffraction grating with arbitrary conductivity and general surface profile is considered in a rigorous electromagnetic formulation. Integral equations for conical diffraction are obtained involving, besides the boundary integrals of the single and double la…
Nanocrystalline sulfur-doped cadmium sulfide (CdS) prepared by microwave synthesis was investigated. Photoelectrochemical and optical characteristics of sulfur-doped CdS exhibit the photoelectrochemical photocurrent switching effect. Depending on the wavelength and applied bias, the anodic and/or cathodic photocurrent…