Materials Literature
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Comparative analysis of the structure of floating layers formed by copper tetra-tert-butylsubstituted phthalocyanine ( CuPctBu4 ) and tetrabenzotriazaporphyrin ( CuThptBu4 ) dissolved in a number of solvents is performed. The influence of the π-system extent (tetra-tert-butylsubstituted copper porphyrazine and phthalo…
The data of the atomic force microscopy of films and coatings based on the water-soluble polymer binders modified with water-dispersion phthalocyanine (WDP) are considered. In the formation of films from a latex polymer with a low glass-transition point (−17°C) and both nonmodified and phthalocyanine-modified latex pa…
A new system for spin resolved photoelectron spectroscopy and bremsstrahlung isochromat spectroscopy has been built and commissioned at Lawrence Livermore National Laboratory for the investigation of the electronic structure of the actinides. Actinide materials are very toxic and radioactive and therefore cannot be br…
We present a view on inelastic scanning tunneling spectroscopy of magnetic impurities relying on states of the total angular momentum $J=L+S$ in the presence of a crystal field. We show that the selection rules for spin-flip scattering within the $J$-multiplet agree with the simple selection rules for the effective sp…
There have been relatively few studies on airborne algae although they are known to have health implications. The aim of this study was to conduct a survey on the distribution of airborne algae within Bukit Jalil in Kuala Lumpur, Malaysia. The sampling sites included a quiet residential area, a busy area with high hum…
We study the nonequilibrium dynamics of colloidal system with short-range depletion attraction and screened electrostatic repulsion on a disordered substrate. We find a growth-melting process of the clusters as the temperature is increased. By strengthening the screened electrostatic repulsion, a depinning transition…
Electrode materials may play an important role in space charge accumulations. Semi-conductive electrodes, carbon black (CB) with ethylene vinyl acetate copolymer (EVA) in three different filling rates, 27vol%, 32vol% and 34vol%, were studied on their space charge injection. Results show that higher CB filling rate ind…
Recent visible wavelength observations of Multiwalled Carbon Nanotubes (MWCNT) coatings have revealed that they represent the blackest materials known in nature with a Total Hemispherical Reflectance (THR) of less than 0.25%. This makes them exceptionally good as absorbers, with the potential to provide order-ofmagnit…
Bulk and thick-film (Ba 0.7 Sr 0.3 )TiO 3 (BST)–glass composites with different dielectric properties were fabricated at 1000 °C from powder mixtures of a sol–gel-derived BST and a commercial glass (GP). Increasing the calcination temperature of the BST gel powder from 850 to 1000 °C resulted in an increase in the sin…
The local crystal and domain structures of the ((Na(1-x)K(x))(0.5)Bi(0.5)TiO(3) (NBT-KBT) solid solutions were studied because of their influence on the enhanced electromechanical properties of ceramics. Based on X-ray diffraction, the morphotropic phase boundary (MPB) was determined for the composition x = 0.20, in w…
A novel lead-free transparent electro-optic ceramic (K 0.5 Na 0.5 ) 0.95 Li 0.05 Nb 0.95 Bi 0.0 5O 3 + 2 mol % excess Bi 2 O 3 has been fabricated by hot-press sintering. The ceramic possesses a dense, fine-grained and pure-perovskite structure. Owing to the decreases in optical anisotropy of the crystal structure and…
Single-phase perovskite ceramics were synthesized using a Pb-free (K(0.44)Na(0.52)Li(0.04))(Nb(0.86)Ta(0.10)Sb(0.04))O(3) (LF4) piezoelectric material both with and without CuO as a dopant additive. Bipolar hysteresis measurements showed a relatively high remanent polarization (20 μC/cm(2), 16 μC/cm(2)) and maximum po…
The mass attenuation coefficients of blue sapphire were measured at the different energy of γ-rays using the Compton scattering technique. There are in good agreement of scattered gamma rays energies between theoretical value and experimental value, reflecting the validation of Compton scattering system setup. The res…
Abstract Red phosphorus encapsulated by polysiloxane (MRP) was prepared, and the chemical structure and morphology of MRP were characterized by FTIR and TEM, respectively. A series of flame retardant polycarbonate/acrylonitrile‐butadiene‐styrene containing MRP (PC/ABS/MRP) were prepared via melt‐blending. The flame re…
Nanomaterials have potential toxicity that is not found in micromaterials, and it is therefore essential to understand their biological activity and potential toxicity. We focused on silica nanoparticles, since it was previously reported that the intravenous administration of silica nanoparticles with a diameter of 70…
The influence of natural aging on the intensity and position of the photoluminescence (PL) peak in n-type porous silicon (por-Si) has been studied. Changes in the phase composition and relative content of the amorphous and oxide phases in por-Si during aging were determined by simulating the spectra of Si L 2,3 ultras…
The effective coercive field Ec for ferroelectric domain reversal is usually determined in a capacitor-like geometry by increasing an applied electric field until poling occurs. Here we present a different method based on local poling with the tip of a scanning force microscope and analyzing the dependence of the doma…
In this study, we examined the anchoring behaviour of the ultraviolet (UV)-tailored nematic liquid crystal (LC) 4-cyano-4'-pentylbiphenyl (5CB) at the aqueous/LC interface. A range of photochemical reaction products are generated when 5CB is exposed to UV light, including the main product 4-cyano-4’-biphenylcarboxylic…
An express method of synthesis of surface-modified membrane composites is suggested that allows obtaining heterogeneous materials featuring effects of the blocking of the transport of solvent ions and molecules. Studies using the methods of atomic force microscopy (AFM), differential scanning calorimetry (DSC), thermo…
In the present work, cetyltrimethylammonium bromide (CTAB)-treated sawdust-reinforced recycled polyethylene (RPE) composites were prepared by injection molding method. The mechanical properties of RPE composites reinforced with CTAB-treated sawdust were evaluated and the results were compared with those of untreated o…