Materials Literature
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We prepared a series of Co-doped thin films using the pulsed laser deposition method at deposition temperatures from 400 to 800 °C under oxygen pressures from 10 −4 to 15 Pa. We found that the ferromagnetic signals in ZnO : Co thin films only appear simultaneously with the detectable Co 2p spectra from incompletely ox…
ADVERTISEMENT RETURN TO ISSUECommunication to the...Communication to the EditorNEXTConformational Changes of Polyamidoamine (PAMAM) Dendrimers Adsorbed on Silica SubstratesLaura Mureşan†, Plinio Maroni†, Ionel Popa†, Maria Porus†, Rémi Longtin‡, Georg Papastavrou§, and Michal Borkovec*†View Author Information† Departm…
Abstract Glasses in the PbCl 2 –Sb 2 O 3 –TeO 2 ternary system were prepared, characterized and their characteristic temperatures and glass stability were determined by thermal analysis. The most stable glass compositions were found in the TeO 2 rich area of the ternary diagram. Selected glass compositions from this g…
Phase transitions typically occur in combinatorial computational problems and have important consequences, especially with the current spread of statistical relational learning as well as sequence learning methodologies. In Phase Transitions in Machine Learning the authors begin by describing in detail this phenomenon…
Abstract Dielectric spectroscopy and AC conductivity measurements have been employed to investigate the electrical properties of disordered materials in a wide range of temperature. In this work, conducting polypyrrole–titanium dioxide (PPy–TiO 2 ) hybrid nanocomposites have been synthesized by oxidizing pyrrole in pr…
Abstract Indium‐doped ZnO (IZO) films with various indium contents were deposited by sol–gel process for application in organic solar cells (OSCs). X‐ray photoelectron spectroscopy (XPS) spectrum verified that indium is incorporated in the ZnO films. All films showed polycrystalline nature with a hexagonal wurtzite st…
We have demonstrated that ferroelectric polarization in a spin-driven multiferroic CuFe${}_{1\ensuremath{-}x}$Ga${}_{x}$O${}_{2}$ with $x=0.035$ can be controlled by the application of uniaxial pressure. Our neutron-diffraction and $\mathit{in}$ situ ferroelectric-polarization measurements have revealed that the press…
Recently, biomaterials research has focused on developing functional implant surfaces with well-defined topographic nanostructures in order to influence protein adsorption and cellular behavior. To enhance our understanding of how proteins interact with such surfaces, we analyze the adsorption of lysozyme on an opposi…
Uronate dehydrogenase from Agrobacterium tumefaciens (AtUdh) belongs to the short-chain dehydrogenase/reductase superfamily and catalyzes the oxidation of D-galacturonic acid and D-glucuronic acid with NAD(+) as a cofactor. We have determined the crystal structures of an apo-form of AtUdh, a ternary form in complex wi…
A number of liquid crystal monomers based on methacrylate derivatives were synthesised by novel mild and solventless procedures under microwave irradiation. Their photo- and thermo assisted homo- and co-polymerizations with glycidyl methacrylate were investigated. The resulting polymers were characterised by NMR, GPC,…
This review summarizes recent trends in the construction of bioartificial vascular replacements, i.e. hybrid grafts containing synthetic polymeric scaffolds and cells. In these advanced replacements, vascular smooth muscle cells (VSMC) should be considered as a physiological component, although it is known that activa…
Nanocrystalline EuCrO 3 particles (∼25 nm) have been prepared by pre-milling a 1 : 1 molar mixture of Eu 2 O 3 and Cr 2 O 3 for 60 h followed by sintering at 700 °C (12 h). This temperature is ∼500–600 °C lower than those at which the material, in bulk form, is conventionally prepared. Rietveld analysis of the x-ray p…
Abstract Carbon nanofibers (CNFs) were functionalized by a multistage process including oxidation, reduction and silanization. The chemical modifications were examined by Fourier transform infrared spectroscopy, X‐ray photoelectron spectrometry, Raman spectroscopy and thermogravimetric analysis. The silanized CNFs wer…
Three series of new ultraviolet-emitting Ca(9)Y(PO(4))(7):Ln(3+) (Ln = Ce, Gd, Pr) phosphors were synthesized, and their luminescence was investigated. Under vacuum ultraviolet excitation Ca(9)Y(PO(4))(7):Ce(3+) phosphors emit UVA light with one broad emission centered at 346 nm, on account of the 5d(1) → 4f(1) transi…
Biofouling is a concern in the water industry due to the impact it has on maintainence of system functioning and the cost involved for prevention. Mechanical and chemical methods such as the application of biocides currently used to control biofouling are not always effective. The need for alternative methods for the…
We present a critical review of the nonlinear optical responses of nematic liquid crystals associated with short pulsed laser induced thermal, density and order parameter fluctuations. Experimental studies conducted with absorbing as well as transparent nematic liquid crystals have demonstrated that all-optical one-wa…
A simple and convenient two-step method for the synthesis of the title compound 1 was developed using N-protected 4-pyrazolilmagnesium bromide 9 as a key intermediate. Laborious procedures for purification or isolation of target compound are not required, therefore, up to 20 g of 1 could be obtained in a single run.
Dispersed on sand: Well-dispersed Pd/SiO2 nanocatalysts with Pd loadings between 0.5 and 5.0 wt % and an excellent resistance to sintering can be prepared by using a simple impregnation method using palladium bis-acetylacetonate as the Pd precursor. The mean size of the Pd particles on SiO2 remains at 3–4 nm even afte…
Linear and nonlinear electric dipole susceptibilities are evaluated for infinite periodic zigzag BN nanotubes utilizing primarily the coupled perturbed Kohn-Sham scheme recently implemented in the crystal code. The effect of different functionals, basis set, and computational parameters is examined. Most of the calcul…
Twenty new enantiopure chiral materials have been synthesized, showing liquid crystalline phases of smectic (SmA*), twisted grain boundary (TGB) and cholesteric (N*) type. The central ester-linkage as well as the length of the attached alkyl-chains were varied in a systematic way and the effects of these structural ch…