Materials Literature
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Spin-coated alumina serving as a gate dielectric in thin film transistors shows interesting dielectric properties for low-voltage applications, despite a moderate capacitance. With Ga singly doped and Ga, Li co-doped ZnO as the active channel layers, typical mobilities of 4.7 cm 2 V −1 s −1 and 2.1 cm 2 V −1 s −1 are…
The crystal structure of a L-threonine dehydrogenase (L-ThrDH; EC 1.1.1.103) from the psychrophilic bacterium Flavobacterium frigidimaris KUC-1, which shows no sequence similarity to conventional L-ThrDHs, was determined in the presence of NAD and a substrate analog, glycerol. The asymmetric unit consisted of two subu…
In this paper we present a novel application of a conducting polymer, polyaniline, as a conductive filler for the development of isotropically conductive adhesives. We have developed isotropically conductive adhesives using protonic acid-doped polyaniline as the conducting filler in an anhydride-cured epoxy system. Fu…
Abstract Here, we report on a novel light sensing scheme based on a silicon/fullerene‐derivative (methano‐fullerene [6,6] phenyl‐C61 butyric acid methyl ester – PCBM) heterojunction that allows the realization of optoelectronic devices for the detection of near‐ to mid‐IR light. Despite the absent absorption of silico…
Grating translation technique, elaborated for photorefractive materials, can be used for determination of amplitude and phase grating contributions to light diffraction efficiency after holographic recording in photochromic polymer films. Here, we report application of this technique to in situ analysis of the formati…
The new complex perovskites of formula R(Cu3−xMnx)Mn4O12 (R=Pr, Nd and x=1,2) have been prepared. The partial replacement of Cu2+ by Mn3+ cations does not involve a change in symmetry from that of the parent compounds RCu3Mn4O12, presenting a cubic structure with space group Im3¯. The Mn3+ introduced at the square-pla…
DSC studies show that a sample starts to melt at 190.6 °C with a high melting enthalpy of 343.4 J/g. Using a laser monitoring system, the solubility of γ-aminobutyric acid in aqueous ethanol solution was measured by a synthetic method at temperatures ranging from 288.2 to 313.2 K and at atmospheric pressure; these are…
Two new polymorphs, β- and γ-In(2)Ge(6)O(15)(NH(2)CH(2)CH(2)NH(2))(2), have been synthesized under solvothermal conditions using 2-methylpentamethylenediamine as a solvent and structurally characterized by single-crystal X-ray diffraction. Both structures contain single layers with the composition [Ge(6)O(15)] that ar…
Silver metalized methacrylate films are prepared by single-step UV curing process with good conductivity on both sides. The major component of the composite is Bisphenol A ethoxylate dimethacrylate, which can be photopolymerized by a photoreactive initiator under UV light. Under the same conditions of UV irradiation,…
Bis-valine derivatives of malonamide (Guha, S.; Drew, M. G. B. Small 2008, 4, 1993−2005) and a bis-valine derivative of 1,1-cyclopropane dicarboxamide were used as building blocks for the construction of supramolecular helical structures. The six-membered intramolecular hydrogen-bonded scaffold is formed, and this act…
Epitaxial films of ZnO doped with magnetic ion Fe and, in some cases, with 1% Al show clear evidence of room temperature ferromagnetic ordering. The dilute magnetic semiconducting films are n-type in nature. The magnetic moment depends on the carrier concentration of the films. All the films show non-ohmic behavior wi…
Abstract Magnetic properties of Mn‐stabilized cubic zirconia (ZrO 2 ) powder samples were investigated to verify the recent theoretical predictions of ferromagnetism in transition‐metal‐doped ZrO 2 . It was found that 5% Mn‐doped cubic ZrO 2 samples, when heat treated in argon and air environments, exhibit tiny hyster…
We show how the phase modulation depth in twisted nematic liquid crystal displays (TNLCDs) can be increased dramatically by selecting a polarization configuration with a reduced mean intensity transmission. This phenomenon, which we have validated with various devices, is shown here for a device that presents a phase-…
A rotating magnetic field (RMF) is used in crystal growth applications during the solidification process in order to improve the crystal quality. Its influence on the convective flows in molten metals and on their stability is studied here in the case of a horizontal infinite cylindrical channel subjected to a longitu…
NiO nanoparticles have been successfully prepared by dissolution-reprecipitation of micro-sized NiO powder from aqueous ammonium hydrogencarbonate solution in the presence of urea followed by calcination at 400°C for 1 h. The products were characterized by simultaneous thermal analysis (TG-DTA), X-ray diffraction (XRD…
The CdTe quantum dots (QDs) are synthesized at room temperature in a record minimum time of 5 min by mechanical alloying the stoichiometric mixture of Cd and Te powders under Ar in a high energy planetary ball mill. Microstructure characterization of ball milled CdTe powders by x-ray diffraction employing the Rietveld…
Although conventional ionomers have been studied for more than 40 years, reports of ionomers prepared using aqueous core–shell nanoparticle dispersions are lacking. In this study we examine the structure and properties of new soft core–shell elastomeric nanoparticles and ionomer films. The nanoparticles consist of a s…
The electronic and magnetic properties of pure and Mn-doped armchair and zigzag ZnO nanotubes were studied using density functional theory with the generalized gradient approximation. The calculated results show that all of the pure ZnO nanotubes are nonmagnetic and have relatively uniform band gap of 1.66 eV at Γ-poi…
Abstract Micron‐sized fibers of UHMWPE reinforced with CNT were fabricated by the electrospinning process. Conditions for a metastable mutual solution of UHMWPE and CNTs were found at elevated temperature. These solutions were used for electrospining using a device having controlled temperature and gaseous environment…
We study theoretically behavior of thermal massless Dirac fermions inside graphene-based Ferromagnetic |Insulator| d-wave/s-wave superconductor (F|I|d and F|I|S) junctions in the ballistic regime. We employ Dirac–Bogoliubov–de Genne formalism and use Dirac–BdG wave functions within the ferromagnetic, normal, and super…