Materials Literature
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Photoelectron spectra from (100) and (111) surfaces of aluminum in the photon energy range 44--100 eV are measured and calculated within an ab initio one-step theory. Dispersion of spectral structures is interpreted in terms of unoccupied electronic structure of a semi-infinite crystal. The energy dependence of comple…
In this article, the effect of two solvents, namely dimethyl formamide (DMF) and N-methyl pyrrolidone (NMP), on the dispersion effectiveness and the resulting electrical and mechanical properties of multi-walled carbonanotubes (MNCNT) filled structural adhesive grade epoxy nanocomposites was studied. The solvents were…
An attempt of synthesis of information concerning chosen organosilicon compounds of the group of electrostatically stabilized (ES)-silanates is described. All hypercoordinated organosilicon derivatives show biological activity. This activity is very important for the whole ecosystem. Some of these compounds easily hyd…
Active restacking from mixtures of colloidal dispersions of delaminated layered double hydroxides (LDH) having different chemical compositions was investigated as a route for the formation of new nanostructured materials. Three nitrate-based layered double hydroxides (MgAl−NO 3, MgGa−NO 3, and CoAl−NO 3 ) were delamin…
The fibers were extracted from ripened Borassus fruits. Two types of fibers were found in the fruits — coarse and fine fibers. Some of both these fibers were treated with 5% aq. NaOH solution. The primary thermograms of the untreated and alkali treated fibers were recorded in an inert atmosphere at a heating rate of 1…
We study the thermodynamics and the pair structure of hard, infinitely thin, circular platelets in the isotropic phase. Monte Carlo simulation results indicate a rich spatial structure of the spherical expansion components of the direct correlation function, including nonmonotonical variation of some of the components…
First-principles density functional theory calculations have been applied to study NO 2 interaction with BaO in various morphologies, including extended BaO surfaces as well as unsupported and γ-Al 2 O 3 -supported BaO clusters. Adsorption of NO 2 over BaO of different morphologies studied with the same method allowed…
In this work, unidirectional carbon-fiber-reinforced polymers (CFRP) with embedded NiTi shape memory alloy (SMA) wire actuators were manufactured using a universal testing machine equipped with a thermally controlled chamber. Beam specimens containing cold-worked, annealed and trained NiTi SMA wires distributed along…
We explore the phase behavior of a rigid achiral bent-core model system. Nematic and smectic phases form at higher densities, whereas micelles and columns composed of chiral clusters of these molecules self-assemble at lower densities. No nucleation mechanism requiring transient chirality is possible in the formation…
Polypropylene(PP)/carbon black(CB) composites at different compositions were prepared via melt blending of PP with CB. The effect of CB content on mechanical and electrical properties was studied. Test samples were prepared by injection molding and compression molding techniques. The effect of processing type on mecha…
Polyelectrolyte brushes loaded with magnetic nanoparticles can be formed through the reaction of immobilized Fe2+/3+ ions in the brush. These particles show very unusual magnetic properties, not normally associated with such small nanoparticles. Upon application of an external magnetic field, the brushes showed revers…
Abstract Pennate diatoms are monophyletic. Their principal cell wall elements, called valves, are shaped like a ship’s hull. Within the pennates, the araphids are paraphyletic; they possess rimoportulae and pore fields located at the valve apices. The pore fields exude mucilage pads with which cells attach to one anot…
Das Conanostrukturieren von PbTe mit zwei Arten von Metallnanopartikeln (Pb und Sb) kann dessen Leistungsfaktor bei hohen Temperaturen deutlich steigern (bis zu 87 % bei 700 K, siehe Bild, ZT=Gütefaktor). Die elektrische Leitfähigkeit nimmt bei hohen Temperaturen drastisch zu, ohne dass die Thermoleistung abnimmt. Die…
Abstract BACKGROUND: The main aim of the work reported here was to investigate the effect of clay aspect ratio and functional edge group on the dispersion, degree of order of clays and interfacial strength of high molecular weight poly( L ‐lactic acid) (PLLA)–clay amorphous nanocomposites and consequently their proper…
Ternary liquids containing approximately 50% Te are studied using neuron scattering. The local environment is quantified, based on the analysis of the total scattering function. In these tellurium-based alloys, a tetrahedral local order dominates for liquids with average number of valence electrons between 4.0 and 4.2…
<div class="htmlview paragraph">A compact, knitted, crimped wiremesh mixer disposed in the exhaust system of an internal combustion engine, between the reductant injection and the urea SCR unit, increases the uniformity of the reductant in the exhaust stream by the time the stream reaches the SCR catalysis unit.…
Sub-barrier fusion of $^{132}\mathrm{Sn}$ and $^{64}\mathrm{Ni}$ was measured at ${E}_{\mathrm{beam}}=465$ MeV with an improved apparatus. The result of this new measurement is well reproduced by a coupled-channel calculation and a density-constrained time-dependent Hartree-Fock calculation. The previously measured cr…
Biological self-assembled structures are receiving increasing focus within micro- and nanotechnology, for example, as sensing devices, due to the fact that they are cheap to produce and easy to functionalize. Therefore, methods for the characterization of these structures are much needed. In this paper, electrostatic…
Previous experiments on chemically homogeneous polymer melt−brush systems have found large deviations from theory. By using X-ray reflectivity and atomic force microscopy, we find that the equilibrium structure of these systems is complex, composed of dewetted droplets of the constituent polymers residing on a residua…
Abstract BACKGROUND: The aim of the work presented was to determine the morphology development and relevant change in fibre diameter of a binary polymer blend system during an electrospinning process. The size of the fibre diameter is one of the important factors determining the general properties of non‐woven mats fo…