Materials Literature
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This paper presents the modeling of different topologies of electric drive systems when the cable that connects the converter to the motor has a significant length. The long feeder together with converter harmonics decrease the performance of the motor. To correctly assess the voltage and the current throughout the dr…
Five acid forest soils of eastern Austria were used to study nickel and copper sorption at metal concentrations ranging over five orders of magnitude. Distribution coefficients were calculated, and the Langmuir equation was fitted to the experimental isotherm data. Exchange for mono- and divalent cations is considered…
The effect of thermodynamical equilibrium transfer of electrons between closed (Landau) orbits and magnetic field independent states near the Fermi surface on the magnetoquantum oscillations in quasi-two-dimensional (2D) metals is investigated. The general relationship between magnetization and chemical potential osci…
Abstract The crystallization kinetics of poly(ethylene terephthalate) was studied using constant cooling rate, isothermal and quenching experiments. A non‐isothermal crystallization kinetics equation based on a single mechanism was used to analyze the data. Different mechanisms of crystallization at low, intermediate,…
Transient absorption spectroscopy with femtosecond time resolution was used to probe the photochemical ring opening process of 3,3-diphenylnaphtho[2,1-b] pyran in solution. Analysis of the temporal evolution of the spectra from 0.4 ps to 100 ps has allowed us to detect and identify some of the intermediates involved i…
The numerous extraordinary properties of carbon nanotubes are now well known – as the other articles in this special issue emphasize – and it is clear that nanotubes differ from ordinary molecules and solids in many respects. In fact, nanotubes have an ambiguous identity: they have reasonably well defined structures –…
Abstract A sequence of interstratified illite-smectite (I-S) and illite in Paleozoic pelites and metapelites from the Iberian Range, Spain, was studied by X-ray diffraction (XRD), scanning electron microscopy (SEM), and transmission electron microscopy (TEM). The fine-grained matrix of diagenetic pelites is composed o…
This article reports on a technique for patterning diamond nanogrit which utilizes commercial ink-jet printer technology. Diamond nanogrit as small as 50 nm has been successfully printed onto substrates of glass, silicon, copper, and fused quartz. The technique has been used to demonstrate a quick and simple means to…
Bei der Umsetzung von YCl3 und Li2SO4 in verschweißten Goldampullen erhält man farblose Einkristalle von Y2(SO4)3. Nach Auskunft der Röngenstrukturanalyse kristallisiert die Verbindung orthorhombisch (Pbcn, Z = 4, a = 1273,97(13), b = 916,76(9), c = 926,08(7) pm, Rall = 0,0274). Die Kristallstruktur wird von [YO6]-Okt…
Singlewall carbon nanotube (SWNT) suspensions have been shown to be good optical limiters mainly because of their nonlinear scattering properties. In this paper, we report on a pump-probe experiment coupled with emission measurements for SWNT's in two solvents (water and chloroform). Time-resolved probe transmission w…
The crystal structure and electrical properties were investigated for (001)- and (116)-oriented SrBi2Ta2O9 (SBT) thin films deposited on (100) SrTiO3 and (100)SrRuO3∥(100)SrTiO3 substrates, and (110) SrTiO3 and (110)SrRuO3∥(110)SrTiO3 substrates, respectively. Both oriented SBT films were epitaxially grown with high c…
Many hydroxy-(hydrated) Cu 2+ oxysalt minerals, particularly Cu 2+ sulfates, are based on structural units that are variants of the [ M ϕ 2 ] N sheets of edge-sharing octahedra, where M is an octahedrally coordinated cation (including vacancies) and ϕ is an anion. Where ϕ = O 2− ,OH,Cl,H 2 O, the sheet can be consider…
The fatigue and hysteresis behaviour of oil palm wood flour (OPWF) filled natural rubber composites was studied. The stress at any strain decreased with increasing OPWF loading in the composites. As the filler loading increased, the poor wetting of the OPWF by the rubber matrix gave rise to poor interfacial adhesion b…
A quantitative model of a Si/SiO2 superlattice (SL) is developed and applied to Raman and photoluminescence (PL) measurements. By analyzing the experimental reflection spectra of Si/SiO2 SLs on Si and Al substrates, we obtained optical parameters of amorphous Si layers with thickness below 4 nm. Both refractive index…
Abstract A novel, continuous process, solid‐state shear pulverization (S 3 P), efficiently mixes blends with different component viscosities. Melt mixing immiscible polymers or like polymers of different molecular weight often requires long processing times. With a batch, intensive melt mixer, a polyethylene (PE)/poly…
Surface modification can be achieved with polymer blends when one component of the system is more surface active than the others. Numerous factors affect the interfacial properties, including the type and concentration of polymers, the solvent, and the interface. Blends of polystyrene (PS) and poly(trifluorovinyl ethe…
A bis(oxazoline)copper complex is immobilized in a synthetic Laponite clay by cationic exchange in different conditions. The structure of the exchanged complex is studied by several spectroscopic methods, mainly EPR and EXAFS, and compared with the homogeneous precursors in both solid state and solution. The exchanged…
High-nuclearity lantthanide complexes, having unique structures and potentially important applications, have been prepared via limited hydrolysis of lanthanide ions controlled by α-amino acids as supporting ligands. These novel complexes, synthesized under physiological or higher-pH conditions, exist as lanthanide-hyd…
The search for the simplest structural class of organic molecules capable of gelling large amounts of organic liquids is reviewed with an emphasis on the approach taken by the authors. The properties of several of the gelators, as well as their gels with various organic liquids, are presented. Some challenges to futur…
The electrical performance of multilayer ceramic capacitors (MLCCs) with Ni inner electrodes, made from (Ba,Ca)(Ti,Zr,Mn)O 3 (BCTZM), is closely related to the calcination temperature and the A/B ratio of the powder. For materials showing A/B = 1.000, the lifetime, the breakdown voltage, and the RC increase with highe…