Materials Literature
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We present here a systematic study on the synthesis of various ZnO nanostructures by electrodeposition method with ZnCl 2 solution as starting reactant. Several reaction parameters were examined to develop an optimal procedure for controlling the size, shape, and surface morphology of the nanostructure. The results sh…
The conversion of 3,4-dialkoxy-benzenes into dialkoxy-benzo-1,3,2-dithiazolyls is described and representative examples (1 and 2) derived from benzodioxole and veratrol, respectively, are reported. Whilst 1 is a dimeric pi*-pi* dimer, the dimethoxy derivative 2 is monomeric in the solid state and exhibits antiferromag…
Dielectric properties of (1−y)Ba0.5Sr05TiO3–yMg2TiO4 (y=0.5–0.8) composite ceramics were studied by using spectroscopic techniques. Increasing the concentration of Mg2TiO4 resulted in hardening of the softest mode, which is responsible for the decrease in the intrinsic permittivity and dielectric loss with increasing…
The title compound (GDUT-4) is the first templated borate compound shown to have ferroelectric properties. Its structure consists of a metal complex and isolated polyanion. The chiral structure of the compound was induced by guest-complex cations according to host-guest symmetry through hydrogen bonds (H-bonds). The o…
Functionalized carbon nanotubes are increasingly exploited as innovative components for the development of advanced biomedical devices. In this study we report a novel synthetic route for the formation of single-walled carbon nanotube (SWCNT)–polyaniline (PANI) hybrids by in situ chemical polymerization. The surfactan…
The photoconversion of photomorphic silver nanoparticles from discs to prisms via citrate mediated growth on the twin plane faces of the nanoparticles is demonstrated. This systematic shape evolution from discs to hexagons and then prisms of increasing aspect ratios is a result of the growth process being confined to…
When beta-ionone-in-water emulsions are mixed with squalane-in-water emulsions, the slightly water-soluble, mobile beta-ionone undergoes mass transfer to the drops of highly water-insoluble, immobile oil squalane. We have investigated this compositional ripening process for emulsions stabilised either by particles or…
Polycrystalline Bi0.5Ca0.5Mn1-xCoxO3(0≤ x≤0.12) samples are synthesized by using the solid-state reaction. The effects of Co-doping on charge order of Bi0.5Ca0.5MnO3 are studied. The results show that Co doping leads to the melting of the charge order and the enhancement of the ferromagnetic correlation. For x≥0.08, t…
CaCO3 whiskers were synthesized with soluble phosphates by one-step carbonization method, controlling mechanisms were investigated via XRD and FTIR, and it has been indicated that the most stable calcium phosphates in thermodynamics, hydroxyapatite was formed through the reaction of soluble phosphates and Ca(OH)2 in a…
De par sa capacité à se volatiliser à température ambiante, le cyclododécane constitue une solution temporaire très utile pour les consolidations, les renforcements et les couches de protection. Afin de mieux comprendre le processus de sublimation qui est en jeu, nous avons réalisé une série de tests gravimétriques et…
VESTA is a three-dimensional visualization system for both structural models and volumetric data such as electron and nuclear densities, Patterson functions, electrostatic potentials, and wave functions. VESTA represents crystal structures by ball-and-stick, space-filling, polyhedral, wireframe, stick, dot-surface, an…
The electronic structure and magnetic properties of the (110) interface between the half-metallic Heusler alloy NiMnSb and semiconductors with different configurations of contact atoms have been calculated in terms of the density functional theory. It has been shown that spin polarization depends substantially on the…
Titanium silicon carbide (Ti3SiC2) possesses a unique combination of properties of both metals and ceramics, for it is thermally shock resistant, thermally and electrically conductive, damage tolerant, lightweight, highly oxidation resistant, elastically stiff, and mechanically machinable. In this paper, the effect of…
Space charge packet is an important phenomenon which manifests the breakdown of dielectric insulation materials.According to the present theoretical analysis and simulation results,the nonlinearity in the carrier mobility-electric field dependence is a crucial factor for the charge packet formation.However,the physica…
The First Order Reversal Curves (FORC) diagrams method was developed for characterizing the switching properties of ferroelectrics. In the present paper, the FORC method was applied for hard Pb(Zr,Ti)O3 ceramics with symmetric and asymmetric clamping. An ideal high-oriented single-crystalline ferroelectric with rectan…
The substitution effects have been measured on the magnetization and lattice parameters of Gd100-xZrx and Gd100-yYy alloys. The magnetic transition temperatures are affected by Zr more effectively than by Y. The Curie temperature decreases with increasing Zr content; the coefficient is -3.6 K/at.%. The effect on spin-…
This work presents the formation of porous silicon by photo-electrochemicalprocesses using diode laser 514 nm, 2mW, under different etching times. The timedependence of porosity values, layer thickness, pore diameter, pore shape ,wallthickness, and etching rate were studied based on SEM images.
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Along with the structural miniaturization and three-phase-in-one tank of GIS,the electrical performance of disk-type insulator in GIS becomes more important for designers.We calculated the three dimensional electric field intensity and potential distribution of disk-type insulator in GIS by FEM,and analyzed the electr…
Similarity in Dissolution behavior of drugs has lon g been sought from the percpective of both bioavailability and quality control considrations. The objective of this study was to apply several pr ofile comparison to dissolution data of three different b atches of Indomethacin (SR) which two of them were German produ…