Materials Literature
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We report the first demonstration of superbroadband emission extending from 1.30 to 1.68 μm in praseodymium(Pr(3+))-erbium(Er(3+)) codoped fluorotellurite glasses under 488 nm excitation. This superbroad near-infrared emission is contributed by the Pr(3+): (1)D(2)→(1)G(4) and Er(3+): (4)I(13/2)→(4)I(15/2) transitions…
We report the synthesis of highly crystallographically textured films of stoichiometric bismuth telluride (Bi(2)Te(3)) in the presence of a surfactant, sodium lignosulfonate (SL), that resulted in the improved alignment of films in the (110) plane and offered good control over the morphology and roughness of the elect…
In this work quantum dot fluorescence thermometry, in combination with double-beam confocal microscopy, has been applied to determine the thermal loading of gold nanorods when subjected to an optical excitation at the longitudinal surface plasmon resonance. The absorbing/heating efficiency of low (≈3) aspect ratio gol…
Abstract Ba 0.5 Sr 0.5 Co 0.8 Fe 0.2 O 3‐δ tubes, capillaries, capillary modules, and asymmetric membranes were prepared and tested for oxygen permeation in a dead‐end vacuum operation mode at temperatures up to 850 ° C. The capillary module was built up by reactive air brazing using seven capillaries and a supply tub…
The density functional theory and hopping model were employed to calculate the charge carrier mobility of four planar polycyclic aromatic hydrocarbon fused tetrathiafulvalene derivatives. The effect of halogen substitution and nitrogen substitution were also investigated. Dinaphtho-tetrathiafulvalene (DN-TTF) and diqu…
The intersite charge transfer at room temperature was found to occur by applying pressure in the A-site-ordered double-perovskite-structure oxide LaCu 3 Fe 4 O 12 . The pressure-induced charge transfer between the A-site Cu and B-site Fe causes a first-order-type transition from low-pressure LaCu 3+ 3 Fe 3+ 4 O 12 to…
A magnetoelectric (ME) laminate heterostructure consisting of two shear-mode piezoelectric Pb(Mg1/3Nb2/3)O3-30PbTiO3 (PMN-PT) single crystal layers, a longitudinally magnetized magnetostrictive Tb0.3Dy0.7Fe1.92 alloy plate, and a mechanical clamping brass substrate has been demonstrated that has a notably superior ME…
Abstract Zinc oxide (ZnO) is a potential semiconductor to exhibit high radiation hardness since large threshold displacement energy for damage can be expected due to the small unit‐cell volume and large bandgap energy. In order to study the radiation hardness, single‐crystalline c ‐axis‐oriented ZnO films with and wit…
We studied the energy transfer processes from organic charge transporting materials (CTMs) to ZnCuInS (ZCIS) quantum dots (QDs) with different emission wavelength by steady-state and time-resolved photoluminescence (PL) spectroscopy. The change in the PL excitation intensity of the ZCIS QDs and the PL decay time of th…
In situ Raman scattering studies allow following real‐time evolutions of volume or surface structures under extreme conditions. In nuclear materials sciences, ion irradiation‐induced atomic organization modification and water radiolysis are of a major interest. In order to better understand these phenomena, we have de…
There have been a number of recent studies reporting high-spin d(4,6) complexes with three- and four-coordinate geometry, which exhibit roughly trigonal symmetry. These include complexes of Fe(II) with general formula L(3)FeX, where L = thioether or dialkylphosphine donors of a tripodal chelating ligand and X is a mon…
The adsorption of Palladium hexafluoroacetylacetonate [Pd(hfac)2] dissolved in supercritical CO2 (scCO2) onto mesoporous silica SBA-15 has been studied by measuring the adsorption isotherms. At 40 °C and 8.5 MPa, the adsorption increases up to saturation at ca. 0.55 mol Pd(hfac)2/kg SiO2 SBA-15. The influence of tempe…
Ultraviolet light-emitting diodes using MgZnO-coated and bare ZnO nanorod arrays as active layers were manufactured. Both types were exposed to ambient air over a 1-yr period to assess their stability. By monitoring the electroluminescence evolution with air-exposure time and comparing the changes of electroluminescen…
Abstract The future of integrated circuits with three‐dimensional chip architecture hinges on the development of practical solutions for the management of excessive amounts of heat generation. This requires new polymer–matrix composites (PMCs), with good processibility, high effective thermal conductivity ( k eff ), a…
A biscyclometalated ruthenium complex bridged by the 2,7-deprotonated form of 1,3,6,8-tetra(2-pyridyl)pyrene was deposited onto indium-tin oxide glass electrodes by reductive electropolymerization. The resulting metallopolymeric films exhibited tricolor electrochromic behavior in the near-infrared region upon switchin…
We have investigated the effects of laser energy density and oxygen pressure on the cation stoichiometry of homoepitaxial (001) SrTiO3 thin film grown by pulsed laser deposition. A broad growth window was found for near stoichiometric, uniform SrTiO3 thin films. At oxygen pressures, at or below 10−2 Torr, laser energy…
Abstract To enhance adsorption of organic dyes like malachite green (MG) onto polymeric absorbents, we prepared carbon nanotube (CNT) filled polyaniline (PANI) composites with large surface areas by simply using entangled CNTs as porous frameworks during PANI polymerization. Adsorption behavior of the CNT/PANI composi…
Ho3+ ion-substituted nanocrystalline cobalt ferrite materials with the chemical formula CoFe2− x Ho x O4 for x = 0.0, 0.025, 0.05, 0.075 and 0.1 have been synthesised by standard citrate precursor method. Crystal structure and phase purity have been studied by powder X-ray diffraction (XRD) method by employing Rietvel…
As nanoparticles have found increased use in both consumer and medical applications, corresponding increases in possible exposure to humans necessitate studies examining the impacts of these nanomaterials in biological systems. This article examines the effects of approximately 30-nm-diameter gold nanoparticles, with…
The hyper-Rayleigh scattering responses as well as the multipolar contributions to the first hyperpolarizabilities are calculated by means of density functional theory for a series of reference molecules (acetonitrile, dichloromethane, trichloroacetonitrile, chloroform, carbon tetrachloride), covering the whole range…