Materials Literature
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We present simulations and characterization of gold coated diffractive optical elements (DOEs) that have been designed and fabricated in silicon for an industrial application of near-infrared spectroscopy. The DOE design is focusing and reflecting, and two-level and four-level binary designs were studied. Our applicat…
The microstructures of beech wood and of beech wood-derived carbon, silicon carbide (SiC), and an aluminum/SiC composite were studied using both scanning electron microscopy (SEM) and synchrotron X-ray micro-computed tomography (µCT). As opposed to traditional two-dimensional imaging techniques, the µCT data allowed n…
Abstract Die spontane Bildung von smektischen und kolumnaren Strukturen wurde beobachtet, wenn sphärische Goldnanopartikel mit mesogenen Thiolen funktionalisiert wurden (siehe Schichtstruktur und Röntgenbeugungsmuster einer Probe mit smektischer Phase). Die Verringerung des Interpartikelpotentials und die Flexibilität…
Abstract We report, for the first time, a one‐step, rapid, template‐free and continuous strategy for synthesising high‐density magnetite (Fe3O4) nanoparticles located in carbon hollow microspheres (MCHMs) in which Fe3O4 nanoparticles (8–20 nm) are randomly dispersed in the shells of carbon hollow microspheres. The syn…
Nowadays, thin-walled load bearing structures can be realised using textile reinforced concrete (BRAMESHUBER and RILEM TC 201-TRC [1]). The required tensile strength is achieved by embedding several layers of textile. By means of the laminating technique the number of textile layers that can be included into the concr…
Abstract Centimeter‐scale assemblies of highly ordered CdSe/CdS core‐shell nanorods have been successfully fabricated by infiltration of the nanorods into the pores of a transparent porous anodic alumina membrane. The high degree of the nanorod ordering is proved by the demonstration of both highly polarized PL and ab…
Conducting polymer devices have been demonstrated to generate a current or voltage in response to a displacement or force, which facilitates their use as mechanical sensors. Trilayer bending sensors are laminated conducting polymer devices that can provide self-contained operation in air, while maintaining many of the…
This work has produced experimental and theoretical evidence for the independence, on the nature of the metal, of the second order NLO response of [5-[[4′-(dimethylamino)phenyl]ethynyl]-15-[(4′′-nitrophenyl)ethynyl]-10,20-diphenylporphyrinate]M(II) NLO chromophores (M = Zn, Ni). EFISH measurements, carried out at a no…
The statistical initiation and propagation characteristics of electrical trees in cross-linked polyethylene (XLPE) cables with different voltage ratings from 66 to 500 kV were investigated under a constant test voltage of 50 Hz/7 kV (the 66 kV rating cable is from UK, the others from China). It was found that the char…
Epitaxial growth of ${\text{SmCo}}_{5}$ films on substrates with two different symmetries was used to tailor film texture. A geometry where the easy axes of all grains are aligned in parallel is compared with a geometry where two sets of grains have a perpendicular alignment. For these two types of films with well def…
A systematic study of the photoluminescence spectra of samarium-doped crystalline TiO 2 was conducted within the temperature range 10–300 K in order to reveal the energy levels of the trivalent impurity ion in different phases of titania. The sol–gel route was used to prepare Sm-doped TiO 2 powders. The nanocrystallin…
Simple wet chemical synthesis of ZnO thin films has been carried out at room temperature (27 °C) from an aqueous alkaline bath followed by annealing in air at 100 °C on fluorine doped tin oxide coated glass substrates. The deposited film showed an optical band gap of 3.28 eV with a thickness of about 40 µm with a hexa…
Abstract A variety of aryloxy compounds and benzyloxy derivatives of TiIV were synthesized from Ti(iPrO)4 using the alcoholysis route. These compounds were characterized using various analytical methods and single‐crystal X‐ray diffraction. Multinuclear NMR studies prove high degree of fluxional behavior of these comp…
Summary A combination of the pH‐dependent leaching test CEN/TS 14429 and geochemical modelling (LeachXS © ‐ORCHESTRA) was used to evaluate the partitioning of major, minor and trace elements in relation to their phosphorus retention capability, the release of non‐nutrient constituents, their reduction of soil acidity…
We found a binary active site of surface enhanced Raman scattering (SERS) and surface enhanced hyper Raman scattering (SEHRS) in single Ag nanoaggregates by single particle spectroscopy. The intensity fluctuation of SEHRS was canceled by dividing SEHRS intensity by SERS intensity on the basis of the binary active site…
Using a nonequilibrium density functional calculation, we investigated the electronic transport properties and fundamental mechanism of spin polarization as a function of the location of impurities from the center to an edge of a graphene nanoribbon device (GND) with zigzag edges. A center-located impurity enables bot…
The solubility of thiourea in triglycol + water had been determined from (292.05 to 357.75) K by the synthetic method. The experimental data were correlated with the modified Apelblat equation.
This paper presents a study of electrical treeing phenomena in polymer nanocomposites. The polymer nanocomposite studied consists of epoxy resin as base polymer and silica as nano filler. Treeing experiments were performed at a constant ac voltage of 20kV, 50Hz on epoxy samples without any fillers as well as epoxy sil…
We report on synthesis of Mn-doped Ge nanowires and their magnetic and electrical properties. The nanowires were grown on the silicon substrate by vapor−liquid−solid mechanism using Au as catalyst and GeCl 4 and MnCl 2 as precursor. Anomalous X-ray scattering measurement makes it clear that Mn atoms are substitutional…
The results of extensive molecular simulations of adsorption and diffusion of water vapor in polyaniline, made conducting by doping it with HCl or HBr over a broad range of temperatures, are reported. The atomistic model of the polymers was generated using energy minimization, equilibrium molecular dynamics simulation…