Materials Literature
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In this work, we report on the synthesis of MgMoO4 crystals by oxide mixed method. The powder was calcined at 1100 °C for 4h and analyzed by X-ray diffraction (XRD), Fourier transform infrared (FT-IR), Field emission gun scanning electron microscopy (FEG-SEM), Ultraviolet-visible (UV-vis) absorption spectroscopy and P…
Silkworm silk is among the most widely used natural fibres for textile and biomedical applications owing to its extraordinary mechanical properties and superior biocompatibility. In this paper, we reported a direct procedure in producing intrinsically luminescent silk by feeding silkworms with Rhodamine B (RhB). We de…
We investigated deposition modulation by noble metals on a photochromic diarylethene (DAE) film. Differences in color and sheet resistance ( R s ) between the metal films deposited on the colored and colorless DAE films were observed. We observed R s ratios of 10 6 for Ag, 10 7 for Cu, and 10 4 for Au. We found that t…
Microwave properties of ferrite-ferroelectric magnonic crystals are investigated for the first time. The electric and magnetic rearrangement of the band gaps in the spectrum of proper electromagnetic spin waves in such structures is demonstrated.
Differential capacitance is derived based upon energy, charge or current considerations, and determined when it may go negative or positive. These alternative views of differential capacitances are analyzed, and the relationships between them are shown. Because of recent interest in obtaining negative capacitance for…
SEU, SEL and SET sensitivity estimation results using laser technique in dependency of TID effects are presented and discussed.
Several wear resistant steels with carbon content between 0·12 and 0·16% and hardness grade at HB450 were designed and developed. The hardness and wear behaviours after different heat treatments were examined by Vickers hardness tester and dry sand rubber wheel apparatus. Results show that steels with similar hardness…
Abstract Perovskite-type LaCoO3 was prepared by sol-gel method using nitrates / chlorides as precursors and citric acid as chelating agent. Chemical composition was obtained by means of EDX method. The structures of sintered samples were investigated by scanning electron microscopy (SEM), IR and XRD analysis. The resu…
Dialdehyde nanocellulose (DANC) was prepared by periodate selective oxidation of secondary hydroxyl group of nanocrystalline cellulose (NCC). NCC and DANC samples were characterized by FT-IR, XRD and conductimetric titration. Aldehyde groups were introduced during the process of sodium periodate oxidation, which was c…
In this work, the ethyl acetate extract from the gals of Pistacia atlantica has been studied as inhibitor mild steel X52 in hydrochloric acid (1M HCl) solution using weight loss, polarization and AC impedance methods have been used the corrosion inhibition efficiency increases on increasing plant extract concentration…
High density polyethylene (HDPE) – coffee dregs (COFD) composites were studied over a range of seven different temperatures, under isothermal crystallization conditions, using differential scanning calorimetric (DSC) analysis. The aim was to observe the influence of filler content in the crystallization kinetics of HD…
Dy doped strontium aluminate phosphor (SrAl4O7:Dy(15% molar concentration)) was synthesized by combustion method using urea as a reducer at initiating temperature of 600oC. The absorption spectra shows the absorption edges at l = 242 nm, thus the band gap of 5.11 eV. The Thermoluminescence (TL) property of Dy(15%) dop…
Ca 5 (PO 4 ) 3 F doped with Dy 3+ phosphors is synthesized by cost effective and easy wet chemical method and characterized by its luminescence properties. In the emission spectrum of Ca 5 (PO 4 ) 3 F:Dy 3+ phosphor, the two intense bands are centered at 484nm (blue) and 575 nm (yellow) having excitation wavelength 35…
Computer-implemented cluster models have been devised for ∼2-nm anatase nanoparticles with exposed (001) and (100) faces. The Lewis acid sites occurring in these faces have been characterized by calculating the enthalpy of CO adsorption. In the Ti 114 O 228 and Ti 187 O 376 H 4 clusters, the corner oxygen atoms compen…
The study continues a series of works of the authors dedicated to the investigation of the alkaliborate glass and melts, in order to determine the structure of samples of the x Cs 2 O-(100 − x )B 2 O 3 ( x ≤ 40 mol %) composition in glassy, supercool, and molten conditions with the high-temperature Raman spectroscopy.…
We characterize spall damage in shock-recovered ultrapure Al with metallography and x-ray tomography. The measured damage profiles in ultrapure Al induced by planar impact at different shock strengths, can be described with a Gaussian function, and showed dependence on shock strengths. Optical metallography is reasona…
X-ray photoelectron spectroscopy is used to study the interaction of model NO 2 storage-reduction catalysts (NSR catalysts) Ba/TiO 2 and Ba/ZrO 2 with NO 2 . The catalysts are prepared on the surface of ultrathin Al 2 O 3 film substrates obtained by the FeCrAl alloy oxidation. It is shown that at room temperature the…
We report optoelectronic control of spin and pseduspins in atomically thin transition metal dichalcogenides, which are a new class of semiconductors at the two dimensional limit with strong spin-orbit coupling.
Several samples of NdFeB and SmCo permanent magnets have been irradiated with gamma rays up to different total irradiation doses until 1Mrad(Si). Magnetic properties of the samples have been measured at different temperatures before and after irradiation. The modifications of the magnetic parameters are presented. Fro…
The two-layered Tb 0.12 Dy 0.2 Fe 0.68 -PbZr 0.53 Ti 0.47 O 3 magnetoelectric composites have been prepared by the deposition of ferromagnetic layers of different thicknesses from a thoroughly mixed Tb 0.12 Dy 0.2 Fe 0.68 ferromagnetic powder and an epoxy glue on preliminarily polarized PbZr 0.53 Ti 0.47 O 3 piezoelec…