Materials Literature
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The tunneling through a ferromagnet/normal metal/ferromagnet double junction in the Coulomb blockade regime is studied, assuming that the spin relaxation time of electron in the central metallic island is sufficiently large. Using the master equation, the current, the tunnel magnetoresistance (TMR), and the current no…
Surface-enhanced Raman scattering (SERS) imaging has been used for the targeting and imaging of specific cancer markers in live cells. For this purpose, Au/Ag core-shell nanoparticles, conjugated with monoclonal antibodies, were prepared. The procedures to label live cells with those bimetallic nanoprobes have been de…
In this paper, nest-like Ni1-xPtx (x = 0, 0.03, 0.06, 0.09, and 0.12) hollow spheres of submicrometer sizes have been prepared through a template-replacement route and investigated as catalysts for generating hydrogen from ammonia borane (NH3BH3). Experimental investigations have demonstrated that the obtained Ni1-xPt…
Grafting emulsion copolymerization of methyl methacrylate (MMA) with butyl acrylate (BuA) of different molar ratios onto natural leather was carried out using redox initiation system of potassium persulfate (PPS) developed as an oxidizing agent and some sodium bisulphite adducts as reducing agents. Sodium dodecyl sulp…
Abstract A single-step approach for the synthesis of multi-walled nanotubes (MWNT) filled with nanowires of Ni/ternary Zr based hydrogen storage alloy has been illustrated. We also demonstrate the generation of CO-free hydrogen by methane decomposition over alloy hydride catalyst. The present work also highlights the…
In this study, cross-linked materials were prepared using the branched macromonomer with different CL/LA molar ratios, and feasibility studies for tissue engineering were carried out. The thermal and mechanical properties of these materials depended on the CL/LA compositions; however, there was no change in the wettab…
Spectral-kinetic studies have been performed for LiY 1-x Yb x P 4 O 12 (x = 0; 0.1; 0.9) phosphates at T = 8-320 K using synchrotron radiation for excitation within the 5-17 eV energy range.Mechanisms for the excitation of Yb 3+ charge transfer and f-f luminescence are discussed.The quasimolecular character of Yb 3+ c…
Abstract A nonequilibrium thermodynamic approach has been developed for describing the emergence of fiber morphologies from a liquid crystalline polymer solution undergoing solvent evaporation, including fibrillar structures, concentric rings, and spiral structures. We utilized Matsuyama–Kato free energy for main‐chai…
The dielectric techniques used to investigate the relaxation behavior of poly (vinyl chloride-co-vinyl acetate-co-2-hydroxypropyl acrylate) (PVVH), poly (acrylonitrile-butadiene-styrene) (ABS), and its polyblends include broadband AC dielectric relaxation spectroscopy (DRS) in the frequency range from 10−2 to 105 Hz,…
In the context of the potential use of crystallization for spontaneous separation of racemates, it is well-known that the frequent appearance of racemic solid forms (racemic compounds) is a serious obstacle. Given previous studies on the selective inhibition of centric versus noncentric polymorphic structures, we repo…
Polymerisation auf engstem Raum: 24 über Abstandshalter gebundene Methylmethacrylat(MMA)-Einheiten ragen in den Innenraum des gezeigten diskreten kugelförmigen Pd12L24-Komplexes (Schale blau, Pd gelb, O rot, C grau; MMA-Einheiten sind als Kalotten wiedergegeben). Die radikalische Polymerisation des Monomers im Kern (I…
The effect of lattice-mismatch and especially the angle-mismatch induced strain on structural and transport properties of epitaxial La 0.7 Sr 0.3 MnO 3 (LSMO) thin films with thicknesses of 5–70 nm has been studied by x-ray diffraction and resistivity measurements. X-ray reciprocal space maps show that the growth of L…
The results of a powder x-ray diffraction study of the evolution of the crystal structure in pyrochlore-free single-phase powders of (1−x)[Pb(Fe1/2Nb1/2)]O3–xPbTiO3 (PFN–xPT) are presented. Rietveld analysis of the powder diffraction data reveals that the morphotropic phase transition in PFN–xPT corresponds to a chang…
Abstract Copolymers of 3,4‐ethylenedioxythiophene and 3‐methylthiophene have been prepared by recurrent potential pulses using monomer mixtures with various concentration ratios, their properties being compared with those of the corresponding homopolymers. In addition, different technological applications have been te…
γ-LnLn‘S 3 (Ln = La, Ce; Ln‘ = Er, Tm, Yb) have been prepared as dark red to black single crystals by the reaction of the respective lanthanides with sulfur in a Sb 2 S 3 flux at 1000 °C. This isotypic series of compounds adopts a layered structure that consists of the smaller lanthanides (Er, Tm, and Yb) bound by sul…
In part 1 of this work, the successful design of additives for the selective inhibition of ( R, S ) - mandelic acid crystallization was described. Now, in part 2 of our study, we show how such additives may be used, together with the known ternary phase diagram, as the basis for a crystallization process that yields a…
Abstract Two phenylethynyl phthalic anhydride‐capped imide oligomers, AFR‐PEPA‐2 and AFR‐PEPA‐8, with molecular weights of 1 601 and 4 699 g · mol −1 , respectively, were synthesized and characterized. The AFR‐PEPA‐ N oligomers show higher glass transition temperatures and higher thermal decomposition temperatures tha…
The reaction of [Ti(mu-ONep)(ONep)3]2 (ONep = OCH2C(CH3)3) with a series of heterocyclic methanol derivatives [tetrahydrofurfuryl alcohol (H-OTHF), thiophene methanol (H-OTPM), or 2-pyridylcarbinol (H-OPy)-collectively termed H-OR*], led to the isolation of a novel family of OR*-substituted titanium alkoxide precursor…
We report the structure and magnetic properties of Zn1-xMnxO thin films grown on Si(001) substrates by pulsed laser deposition. Structure and phase evolution with Mn doping has been studied using x-ray diffraction, electron diffraction, and high-resolution electron microscopy. The undoped and 1% Mn-doped ZnO films are…
Abstract PI surfaces were modified by RF plasma sputtering of a PTFE target. Ultrathin fluoropolymer films of 10–50 nm thickness were deposited. The sputter‐deposited polymeric films were characterized by XPS, ToF‐SIMS and FT‐IR spectroscopy. The results indicated that the chemical composition and molecular structure…