Materials Literature
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Abstract BACKGROUND: Recently, much work has focused on the efficient dispersion of carbon nanotubes (CNTs) throughout a polymer matrix for mechanical and/or electrical matrices. However, CNTs used as enhancement inclusions in a high‐performance polymer matrix, especially in poly(aryl ether ketone) (PAEK), have rarely…
Miscibility and morphology of poly(ether sulfone)/poly(vinyl pyrrolidone) (PES/PVP) blends containing a crystalline phytochemical called mangiferin were investigated using differential scanning calorimetry (DSC), Fourier transformed infrared spectroscopy (FTIR), and polarized optical microscopy (POM). The binary blend…
The optical spectra and electron paramagnetic resonance (EPR) g and A factors of calcium aluminoborate glasses (CaAB) : VO2+ are calculated using a complete diagonalization (of the energy matrix) process (CDP). Good agreement between the theoretical values and experimental results indicates the effectiveness of the CD…
The controlled decomposition of crystalline Ce 1− x La x (OH)CO 3 samples to give nanocrystalline Ce 1− x La x O 2−δ solid solutions is studied as a function of temperature and La(III) content. The hexagonal basic carbonates, related to the mineral bastnaesite, are shown to be suitable precursors for the obtainment of…
Sort it out! Density-gradient ultracentrifugation is used to separate single-walled carbon nanotubes (SWNTs) of a single chirality. A “nanometal sinker” (AuCl4− ions) adsorbs onto specific SWNTs and allows the separation of adsorbed SWNTs and nonfunctionlized SWNTs (see picture). (6,5) SWNTs have been successfully sep…
This paper introduces a novel recurrent neural network, the hysteretic recurrent neural network (HRNN), that is ideally suited to modeling hysteretic materials and systems. This network incorporates a hysteretic neuron consisting of conjoined sigmoid activation functions. Although similar hysteretic neurons have been…
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 (Fe 3 O 4 ) nanoparticles located in carbon hollow microspheres (MCHMs) in which Fe 3 O 4 nanoparticles (8–20 nm) are randomly dispersed in the shells of carbon hollow microspheres.…
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 Ti IV were synthesized from Ti( i PrO) 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…
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…