Materials Literature
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Three-layer films were prepared with polyethylene (PE) and poly(ethylene terephthalate) (PET) films as the outer layers and a film of high-density polyethylene (HDPE)/ethylene-methyl acrylate-glycidyl methacrylate (E-MA-GMA) terpolymer blend as the inner layer using compression molding. E-MA-GMA, an elastomer containi…
CdSe quantum dots (QDs) have been synthesized continuously at 200–320°C using a micro-flow reactor. Instead of the usual tri- n -octylphosphineoxide (TOPO)-tri- n -octylphosphine (TOP) solvent, octadecene (ODE)-oleic acid-TOP mixed solvent was used in the present study. Because the ODE-oleic acid-TOP solvent is in liq…
Silicon based nanoparticulates of various composition and morphology have been produced by smelting reduction method which includes a carbothermic reduction of SiO2–Al2O3–CaO starting materials to SiO vapor at 2073 K and transfer of the vapor with a carrier-gas to cooler surfaces inside the experimental reactor where…
The solid state interactions in the systems CaO(CaCO3)-Fe2O3 and CuFe2O4-CaO have been studied using X-ray diffraction analysis. The influence of the temperature on the ferrite formation process has been investigated in the range of 900-1200 oC and duration up to 360 min. It has been shown that a mixture of ferrites f…
In this paper we present a first order study of liquid water detachment and entrainment into air flows in hydrophobic microchannels. A silicon based microfabricated test structure was used for this purpose. It consists of a 500 μm wide by 45 μm deep U-shaped channel 23 mm in length through which air is flown. The stru…
Dispersed nanoparticles self-assemble into complex structures when segregated from the solvent either by evaporation or precipitation. Thus, different micro- and macroscopic structures (opals, fractals, liquid crystals) formed by nanoparticles are observed as a result of the balance between electrostatic forces, surfa…
The 2 : 1 salts of a new donor molecule, benzotetrathiafulvalenothioquinone-1,3-dithiolemethide (Benzo-TTFVS) with magnetic FeCl4− and FeBr4− ions, and with non-magnetic GaCl4− and GaBr4− ions were obtained as single crystals by an electrochemical oxidation method. All of the crystals have very similar structures to e…
The speciation of niobium and tin in 29 silicate glasses was investigated by XAFS at the Nb and Sn K-edges using beamline 4-3 and 11-2 at SSRL (Stanford, USA). The metal content in the glasses varies between 100 ppm and 5 wt.% (to examine the effects of Nb 2 O 5 and SnO 2 saturation in the melt composition prior quenc…
Dielectric response of relaxor PMN ceramics (standard and textured) was investigated in the high-frequency range (1 MHz–1.8 GHz) and compared with the broad-band response of PMN single crystals. Similar to PMN crystals, dielectric response of PMN ceramics was found to be mainly defined by the polar nanocluster dynamic…
Of prime interest in numerous studies on water, an important substance to all living systems, may be its physical, chemical, biological characteristics in our internal and external environments. One of the central problems underlying all these researches is a basic structural problem. An important question was why ord…
Abstract The adhesion parameters of fillers in composites, coefficient of wetting, interfacial free energy and work of adhesion, were calculated in order to evaluate the difference between the effects of selected microfillers vs nanofillers in polyacrylate (PA) and poly (vinyl acetate)(PVAc) matrix. The results showed…
Abstract The interactions between methyl tert ‐butyl ether (MTBE) and differently defected tetrahedral and octahedral fragments of clay minerals containing Si 4+ , Al 3+ , and Mg 2+ central cations have been studied at the B3LYP and MP2 levels of theory in conjunction with the 6‐31G( d ) basis set. MTBE interacts with…
Scale formation is a serious and costly problem encountered in the oil and gas industry. Polyphosphinocarboxylic acid (PPCA) is a common commercial organic scale inhibitor used in the oil and gas industry which is normally referred to a nucleation inhibitor. In this paper, the effect of PPCA on calcium carbonate scale…
It is known that the single-modal Weibull model describes well the size effect of brittle fiber tensile strength. However, some ceramic fibers have been reported that single-modal Weibull model provided biased estimation on the gauge length dependence. A hypothesis on the bias is that the density of critical defects i…
We report on the interesting properties of a novel single precursor, Cd(tta)2 x tmeda (Htta = 2-thenoyl-trifluoroacetone, tmeda = N,N,N',N'-tetramethylethylenediamine), ideally suited for the selective and reproducible fabrication of pure quality films of CdS or CdO through a simple solution process.
Monitoring of fast transformations in solid state chemistry and heterogeneous catalysis by QEXAFS in the second scale, Lützenkirchen-Hecht, D, Grunwaldt, J-D, Richwin, M, Griesebock, B, Baiker, A, Frahm, R
Article on the solubility of crystalline nonelectrolyte solutes in organic solvents and the mathematical correlation of 3-chlorobenzoic acid solubilities with the Abraham solvation parameter model.
The performance of the conventional low‐energy CD‐SEM is limited by the aberrations inherent in the probe forming lens. Multi‐pole correctors are now available which can reduce or eliminate these aberrations. An SEM equipped with such a corrector offers higher spatial resolution and more probe current from a given ele…
Biopolymers formed from crosslinking of different proteins is an area of growing interest. Much has been reported in the literature on the properties of a variety of biopolymers synthesized by enzymatic treatment. These products have the advantage of possessing the unique properties of each protein and have the potent…
The aim of the work was the selection of the most suitable method for fracture surface analysis using modern tools for mathematical verification of a dataset containing irregular data values and considerable variability of amplitude. The Hurst exponent was used for the verification of the analyzed dataset. The propose…