Materials Literature
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Time-trends of available potassium (K) in an arable land were investigated within long-term field fertilization experiments established in 1979 at nine sites across climatic and soil conditions of the Czech Republic. Annual K application rates necessary for a stabilization of available K at levels of 108–283 mg K kg−1…
We report a numerical investigation on the catalytic growth mechanism of a single-walled carbon nanotube (SWNT) inside a template SWNT, that is, formation of a double-walled carbon nanotube (DWNT). The molecular dynamics simulations together with complementary ab inito calculations suggest that the DWNT formation from…
The C14 Laves-phase ${\text{MgZn}}_{2}$ has been investigated from 30 to $36\text{ }\text{at}\text{.}\text{ }\mathrm{%}\text{ }\text{Mg}$. In this way chemical disorder can be monitored over a limited concentration range and the influence on electron properties can be investigated. Our studies include thermodynamic ca…
Abstract The effect of the combination of a benzotriazole type of UV absorber (UV326) with different types of thermal stabilizers, including an organic calcium complex and an organotin mercaptide, on the photodegradation of poly(vinyl chloride) (PVC) was investigated by color difference measurements, UV‐vis spectrosco…
The behavior of natural zeolites is important in any application that utilizes the gas adsorption properties of zeolites. Because of the large variety in the sizes of extraframework cavities and inter-cavity ports, the de/rehydration behavior varies considerably from zeolite to zeolite. Most zeolites have large extraf…
Abstract Viscoelastic and cure properties of styrene‐butadiene rubber compounds were investigated by using a “Rubber Process Analyzer.” The effects of sulfur content in the cure system and carbon black (CB) type and concentration on the cure behavior of samples were studied. As the ratio of S/accelerator in the curati…
Use of liquid carbon dioxide (l-CO2) in the uniform and dense deposition of CuS, PbS, or CdS quantum dots (QDs) with 2.5−4.5 nm in diameter onto mesoporous TiO2 films for quantum dot sensitized solar cell (QDSSC) applications is described. The low surface tension and the low viscosity of l-CO2 lead to uniform depositi…
Nonequilibrium molecular-dynamics simulations are presented for the shear rheology of suspensions of extended "jack"-shaped nanoparticles in an explicit solvent. The shear viscosity is measured for two jack-shaped nanoparticle suspensions for volume fractions from 0.01 to 0.15 and compared to spherical nanoparticles o…
Abstract Polypropylene (PP) is widely used in many fields, such as automobiles, medical devices, office equipment, pipe, and architecture. However, its high brittle transformation temperature, low mechanical strength, dyeing properties, antistatic properties, and poor impact resistance, considerably limit its further…
The effective thermal and dynamic properties of composites containing polymethyl-metha-acralyte (PMMA) dispersed with single-wall carbon nanotubes (SWCNTs) were studied by modulation/ac calorimetry (ACC) and modulation-differential-scanning (MDSC) calorimetric techniques. The specific heat and effective thermal conduc…
Supersonic He and Ar atomic beam scattering from C(60) and graphene monolayers adsorbed on a Pt(111) surface are demonstrated in order to obtain detailed insight into a gas-molecule collision that has not been studied in detail so far. The effective masses and phonon spectral densities of the monolayers seen by differ…
The problem of supercurrent in superconducting graphene is revisited and the supercurrent is calculated within the mean-field model employing the two-component wave functions on a honeycomb lattice with pairing between different valleys in the Brillouin zone. We show that the supercurrent within the linear approximati…
Purpose The purpose of this paper is to present a methodology of identification and calculating vibrations of power transformers caused by magnetostriction. Design/methodology/approach All calculations are based on finite element approach. Electromagnetic model uses 2D time stepping solution in nonlinear continuum of…
The optical properties of slab waveguides made of indefinite permittivity ($\ensuremath{\varepsilon}$) materials (IEMs) are considered. In this medium, the real part of the transverse permittivity is negative while that of the longitudinal permittivity is positive. At any given frequency, the IEM waveguide supports an…
Copper nanoparticle was synthesized in the presence of heptadecafluorononanoic acid by the conventional solution immersion method at room temperature from the copper plate, as a resource material. The bulk etching rate was calculated by the weight loss method. The pale green colored Cu-HDFN was characterized by Fourie…
The effect of electron beam dose on the mechanical, thermal, and electrical properties over ethylene methylacrylate (EMA) copolymer was investigated. The copolymer (Elvaloy 1224) was subjected to electron beam radiation at different doses for cross-linking, with the incorporation of the sensitizer trimethylolpropane t…
We study hot electron transport in short-channel suspended multilayer graphene devices created by a distinct experimental approach. For devices with semitransparent contact barriers, a dip of differential conductance $(dI/dV)$ has been observed at source-drain bias ${V}_{d}=0$, along with anomalies at higher ${V}_{d}$…
Abstract The aim of this study was to tailor the surface properties of cellulose acetate membranes using low‐pressure plasma processing. Argon (Ar) plasma and Difluoromethane (CH 2 F 2 ) plasma were used to control the surface wettabilities of cellulose acetate membranes. Optical emission spectroscopy was used to exam…
Electrical-resistivity and magnetic-susceptibility measurements under hydrostatic pressure up to $p\ensuremath{\approx}2.75\text{ }\text{GPa}$ have been performed on superconducting (SC) LiFeP. A broad SC region exists in the temperature-pressure $(T\text{\ensuremath{-}}p)$ phase diagram. No indications for a spin-den…
Recent applications of infrared (IR) spectroscopy in research of clays and clay minerals are reviewed. After a brief description of the structures of clay minerals and basic principles of IR spectroscopy, the selected most interesting papers published in this area in 2007–2009 are discussed. The potential of both midd…