Materials Literature
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We study the effects of the relativistic electronic dressing in laser-assisted electron-hydrogen atom elastic collisions. We begin by considering the case when no radiation is present. This is necessary in order to check the consistency of our calculations and we then carry out the calculations using the relativistic…
Abstract Fracture properties and deformation mechanisms of nanoclay‐reinforced maleic anhydride‐modified polypropylene (MAPP) were investigated. Elastic–plastic fracture mechanics was employed to characterize the toughness in light of substantial postyield deformation for the reinforced MAPP. Upon introduction of 2.5…
Thermally reversible light scattering (TRLS) films were synthesized by the reaction-induced phase separation of solutions of N -4-ethoxybenzylidene-4‘- n -butylaniline (EBBA; 20−50 wt %) and polystyrene (PS; 1−5 wt %) in diglycidyl ether of bisphenol A (DGEBA), using benzyldimethylamine (BDMA) (0.06 mol with respect t…
The time-dependent behavior of droplets in the presence of insoluble surfactants, i.e., droplet elongation in supercritical flow (capillary number Ca=0.1) and droplet breakup in a quiescent matrix, is studied using a finite element method. The interfacial tension coefficient σ as a function of the surfactant concentra…
A newly proposed Monte Carlo formalism has been used to simulate a glass-forming liquid above and below the glass transition temperature. The heat capacity exhibits a sharp peak at a temperature lower than that reported from extensive molecular dynamics simulations. Its height is larger than that reported earlier. At…
The theory of unconventional one-dimensional periodic mesophases forming in a liquid of achiral bent-core molecules is presented. The order parameter is a polarization wave. Three distinct phases which can be stabilized directly from the isotropic liquid phase are associated with linear, circular, and elliptic polariz…
State secrets: Mott–Hubbard and charge-density-wave states have been observed in the quasi-1D bromine-bridged Ni and Pd complexes [M(chxn)2Br]Br2, respectively, using STM (see image for the Ni complex, the arrow denotes the direction of the chain). The spin soliton was also visualized in real space in the Ni-Pd mixed-…
Hollow boron nitride (BN) nanocages (nanospheres, image on the left) and BN-nanocage-encapsulated GaN nanocrystals (right) have been synthesized by using a homemade B-N-O precursors. The as-prepared BN hollow nanocages have typically spherical morphologies with diameters ranging from 30 to 200 nm. The nanocages have c…
In this study, we demonstrate the large-scale synthesis of wurtzite ZnS nanostructures by simple thermal evaporation of ZnS powder in the presence of Au catalysts at 970 °C. Scanning electron microscopy (SEM), transmission electron microscopy (TEM), and X-ray diffraction (XRD) analyses demonstrated that the ZnS nanost…
We report a new approach for fabricating layer-by-layer (LBL) structured ultrathin hybrid films on electrospun nanofibres. Oppositely charged anatase TiO 2 nanoparticles and poly(acrylic acid) (PAA) were alternately deposited on the surface of negatively charged cellulose acetate (CA) nanofibres using the electrostati…
Rare earth phosphates have recently been investigated as a potential ceramic material in view of their high-temperature phase stability, high melting point, low thermal conductivity, optical, fluorescence, and catalytic properties, and layered structural features. The present work describes a method for synthesizing n…
Amidopyridine and -2,2'-bipyridine derivatives of EDT-TTF and BTM-TTF (EDT=ethylenedithio, BTM=bis(thiomethyl), TTF=tetrathiafulvalene) have been synthesized and crystallographically characterized. In the solid state, the different supramolecular organization of all these donors results from the competition between th…
The electronic states of manganese in p-type GaN are investigated using photoluminescence (PL) and photoluminescence excitation (PLE) spectroscopies. A series of sharp PL lines at 1.0 eV is observed in codoped GaN and attributed to the intra d-shell transition 4T2(F)-4T1(F) of Mn4+ ions. PLE spectrum of the Mn4+ [4T2(…
It is shown that the average diameter of tracks produced by swift heavy ions in metals is determined by the size of elementary resonator. The last is introduced in the theory of thermal radiation accounting for the stimulated radiation processes. Due to the inverse density gradient, radiation produced by electronic ex…
This contribution considers recent developments in the computer modelling of amorphous polymeric materials. Progress in our capabilities to build models for the computer simulation of polymers from the detailed atomistic scale up to coarse-grained mesoscopic models, together with the ever-improving performance of comp…
We have investigated the hydrogen storage properties of a ball-milled mixture of 3Mg(NH 2 ) 2 and 8LiH after first synthesizing Mg(NH 2 ) 2 by ball milling MgH 2 under an atmosphere of NH 3 gas at room temperature. The thermal desorption mass spectra of the mixture without any catalysts indicated that a large amount o…
<div class="htmlview paragraph">To ensure overall optimisation of heavy duty engine performance (with the respect of NOx&amp;PM future European and US emissions standards), the use of a high efficiency NOx after-treatment system such as a NOx trap appears to be necessary. But running in rich conditions, even…
The substrate-induced oxidation upon prolonged annealing in UHV of ultrathin films of Ni and Cr vapor deposited on yttria-stabilized zirconia YSZ(100) was studied by X-ray photoelectron spectroscopy (XPS) to obtain information about the oxidation mechanism, determine the available quantity of reactive oxygen in YSZ, a…
The isothermal decomposition of austenite into ferrite is investigated using a two-dimensional cellular automaton (CA) algorithm. This CA model provides a simple solution for the difficult moving boundary problem that governs the ferrite grain growth. In this model, the growth of ferrite grains is controlled by both t…
The domain structures of Bi 4− x La x Ti 3 O 12 (BLT) ceramics (where x = 0, 0.5, 0.75, and 1.0) have been investigated by transmission electron microscopy. The morphology of the 90° domain walls were found to be curved due to a decrease of the spontaneous strain energy after doping with La. Movement of the 90° domain…