Materials Literature
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Abstract Geordnete Verhältnisse : Assoziate ferromagnetischer FePt‐Nanopartikel mit großer senkrechter magnetischer Anisotropie wurden durch magnetfeldgestützte schichtweise Abscheidung erhalten, und anschließend wurden geschichtete Filme aus L1 0 ‐FePt‐Nanopartikeln und organischen Polymeren hergestellt. Diese Filme…
Here we report on the role of Glu59 in the fumarate-mediated allosteric regulation of the human mitochondrial NAD(P)+-dependent malic enzyme (m-NAD-ME). In the present study, Glu59 was substituted by Asp, Gln or Leu. Our kinetic data strongly indicated that the charge properties of this residue significantly affect th…
Asymmetric anisotropic growth in wurtzite based II−VI semiconductors has been exploited in the past to create a diversity of nanocrystal shapes and topologies. Here, we present a methodology, based on ab initio calculations, to assess the circumstances (i.e., chemical environments) under which anisotropic and asymmetr…
A very simple and efficient numerical method for evaluating the Madelung constants for cubic crystals, using cubes of increasing size, is proposed. The results of successful applications to the NaCl and CsCl ionic crystals, representative perovskite cubic lattices, and to a simple cubic metal are reported.
We investigated the pH dependence of Eu 3+ emissions from Eu 3+ -intercalated layered titanium oxide (Eu/TiO) and evaluated the local structure of the intercalated Eu 3+ at varying pH values using lifetime measurements and EXAFS. A red Eu 3+ emission was observed under radiation by UV light with a higher energy than t…
Purpose The paper aims to focus on the recognition of corrosion product morphologies of AA5083‐H321 corroding aluminum‐magnesium alloys used in the manufacture of aluminum high speed boats and submarines during flow induced corrosion in seawater. Design/methodology/approach All experiments were conducted in a 3.5 perc…
In Murata vortex spinning, fiber loss is an important cause of the generation of yarn thin areas. In this paper, based on the attenuation law of flow field inside the nozzle block, the force analysis of a separated fiber twined over the top exterior of a hollow spindle in a twisting chamber is carried out, and the mov…
Electroluminescence (EL) devices for printable electronics using coprecipitated ZnS:Mn nanocrystal (NC) ink are demonstrated. The EL properties of these devices were investigated along with the structural and optical properties of ZnS:Mn NCs with an emphasis on their dependence on crystal size. Transmission electron m…
We present many-body perturbation theory calculations of the electronic properties of phenylene diisocyanide self-assembled monolayers (SAMs) on a gold surface. Using structural models obtained within density functional theory (DFT), we have investigated how the SAM molecular energies are modified by self-energy corre…
Chemical gradients play an important role in guiding the activities of both eukaryotic and prokaryotic cells. Here, we used molecularly well-defined chemical gradients formed by self-assembled monolayers (SAMs) on gold films to reveal that mammalian cell adhesion and bacterial biofilm formation respond differently to…
We studied the stratification behavior of free-standing foam films which are stabilized by nonionic surfactants and contain polyelectrolytes with different backbone flexibilities, namely sulfonated polyacrylamide (PAMPS), carboxymethyl-chitin (CM-Chitin), Xanthan, and DNA. Stratification is due to a specific arrangeme…
The Flügge shell theory is frequently used for the analysis of carbon nanotubes (CNTs) due to the relatively accurate results it provides in spite of its theoretical simplicity. Based on the Flügge shell theory, a tubular beam theory was established by considering non-locality. In order to convert a cylindrical shell…
We have determined the internal organization of elongated sexithiophene aggregates in solution by combining small-angle X-ray scattering and magnetic birefringence experiments. The different aggregate axes can be probed independently by performing the experiments on magnetically aligned aggregates. We have found multi…
An ultrasonic vibration cavitation erosion experiment was performed to study the thermal effect during the erosion process. The ring affected zone was observed on the sample surface around the erosion pit at the incipient stage of the cavitation erosion. The results of the surface testing on roughness, hardness, and c…
Rate constants for thermal cis-to-trans isomerization of N-(phenylazo)-substituted nitrogen ring heterocyles were determined as a function of phenyl ring substitution, cyclic amine ring size, and organic solvents. Observed first-order rate constants are found to increase with increasing electron-withdrawing character…
Abstract Turn up the heat! Iron and ruthenium nanoparticles in carbon have been prepared by thermolysis of iron and ruthenium fullerene complexes at 500–900 °C in nitrogen. Differences in their size, formation processes, and catalytic activities have been characterized using TG‐DTA, VT‐TEM, and VT‐XRD analyses. magnif…
Definitive prion disease diagnosis is currently limited to postmortem assay for the presence of the disease-associated proteinase K-resistant prion protein. Using cerebrospinal fluid (CSF) from prion-infected hamsters, matrix-assisted laser desorption/ionization Fourier transform mass spectrometry (MALDI-FTMS), and su…
In this paper we have performed density-functional study on the adsorption and diffusion of various alkali-metal ions on the surface of pristine and defective armchair single-wall carbon nanotubes. In the pristine SWNT system, the position above the hexagon is believed to be the most stable site for adsorption, while…
Abstract Effect of metallic oxides on flame retardancy and the thermal stability of styrene butadiene rubber (SBR) composites based on ammonium polyphosphate (APP) and pentaerythritol (PER) was studied by the limiting oxygen index (LOI), UL 94, the cone calorimeter tests, and thermogravimetry analysis (TGA), respectiv…
Porphyrin rings CZ4, CZ6, and CZ8 that respectively comprise four, six, and eight porphyrins, immobilized in a thin PMMA film, have been investigated using single molecule fluorescence spectroscopy with a focus on the influences of the overall structural rigidity as the ring size of porphyrin array increases. Neighbor…