Materials Literature
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Abstract Lanthanum telluride (La 3 Te 4 ) is an n-type high-performance thermoelectric material in the high temperature range, but its mechanical properties remain unknown. Since we want robust mechanical properties for their integration into industrial applications, we report here quantum mechanics (QM) simulations t…
High Resolution Image Download MS PowerPoint Slide Mesoporous aluminosilicates (MAs) with high hydrothermal stability by assembly of zeolite Y precursors have been emerging as the most promising materials for cracking heavy oil molecules. A means to improve utilization efficiency of organic surfactants is of vital imp…
Fan-out elements create an array of beams radiating at particular angles along the propagation axis. Therefore, they are able to form a matrix of equidistant spots in the far-field diffraction region. In this work, we report on the first fan-out structures designed for the THz range of radiation. Two types of light-di…
This study develops technology for mitigation of NO x formed in thermal processes using recycled plastics such as polyethylene (PE). Experiments involve sample characterization, and thermogravimetric decomposition of PE under controlled atmospheres, with NO x concentration relevant to industrial applications. TGA–Four…
We use hard x-ray photoemission spectroscopy combined with x-ray standing waves to characterize a series of Pd/Y multilayers designed to work in the 7.5-11 nm wavelength range. The samples, prepared by magnetron sputtering, are deposited either with or without nitrogen introduced in the sputtering gas. The aimed perio…
Abstract Cation‐π interaction is an intermolecular interaction between the face of a π system and an adjacent cation, which brings about a change in molecular dynamics of organic reactants in catalysis. In this study, a series of alkali metal cations‐anchored TiO 2 /SiO 2 hybrid catalysts were prepared based on organo…
Abstract The crystal size of upconversion nanoparticles (UCNPs) can be effectively controlled by doping metal ions, which remarkably enhances upconversion luminescence (UCL) intensity and pure color turning. This study investigates phase and size properties of Yb 3+ /Tm 3+ /ZnO with various concentrations of Ga 3+ . I…
A biocomposite manufactured from peroxide/silane crosslinked poly(lactic acid) reinforced with hybridized empty fruit bunch (EFB) oil palm and cotton fibers was investigated. Optimization of dicumyl peroxide (DCP) and the vinyltrimethoxysilane (VTMS) crosslink system by using the 2k factorial design of experiment (DOE…
Abstract The interaction between two Ag II porphyrins, connected covalently through a highly flexible ethane bridge, in a metalloporphyrin dimer has been investigated upon stepwise oxidation. X‐ray structure determination of one and two‐electron oxidized complexes has clearly revealed only metal‐centered oxidation tha…
The present paper reports the synthesis of magnesium-substituted nickel ferrite (NiFe (2−x) Mg x O 4 ) (x = 0·15, 0·30, 0·45 and 0·60) using the autocombustion technique with particle size in the nanometer range. As-prepared samples were sintered at two different temperatures (600, 900°C). In the present investigation…
Abstract Strong magnetic coupling between the spins of unpaired electrons is an essential ingredient of many fascinating physical phenomena. Here we report calculations using the hybrid HSE06 functional of magnetic superexchange constants, J , for a series of low‐dimensional Cu II and Ag II binary and ternary systems…
An efficient synthesis strategy for the preparation of two renewable polyesters and one renewable polyamide via catalytic oxyfunctionalization of methyl 10-undecenoate, a castor oil derived platform chemical, is described. The keto-fatty acid methyl ester (keto-FAME) is synthesized applying a cocatalyst-free Wacker ox…
The performance of Ni/YSZ anodes has been shown to substantially benefit by a reverse current treatment of a solid oxide fuel cell. Within seconds, a solid state reaction builds a nanoscaled layer at the anode/electrolyte interface, thereby increasing the triple-phase boundary density considerably. The reaction mechan…
WO 2 nanowires have great potential as cold cathode materials because they exhibit excellent field‐emission properties in terms of their low work function and high conductivity. Considering the requirements of the practical applications in large‐area cold‐cathode devices, such as X‐ray source and panel display, these…
The authors propose to use glycidyl methacrylate and lauryl methacrylate copolymers to provide the cotton fabric surface with superhydrophobic properties. The modification was carried out by immersion of cotton fabric in solutions of copolymers in methylethylketone and following heat treatment at 140°C. Stability of t…
ABSTRACT A series of crosslinked polyurethanes (PUs) were synthesized from para ‐phenylene diisocyanate, 2‐(hydroxymethyl)‐2‐ethyl propane‐1,3‐diol (TMP), and butane‐1,4‐diol as the hard segments and poly(oxytetramethylene glycol) as the soft segments. The effects of TMP on the physical properties and microphase struc…
Abstract We present a theoretical study of the charging effects in single and double layer black phosphorus quantum dots (BPQDs) with lateral sizes of 2 nm and 3 nm. We demonstrate that the charging of BPQDs are able to store up to an N max electron (that depends on the lateral size and number of layers in the QD), af…
Chitosan films were obtained in the salt form and in the hydroxide form. Films were prepared by dry method of forming. For the production of films chitosan from mycelium biomass waste of fungus Aspergillus Niger was used. The effect of heat treatment on the structure and solubility of chitosan films was studied. It wa…
Terfezia claveryi is a species that belongs to the genera of Terfeziaceae or desert truffles, which is a family of truffles. In the present study, silver nanoparticles were synthesized from aqueous extract of T. claveryi which are in the range of 25 to 60 nm. The synthesized nanoparticles were characterized by ultravi…
The processes of molecular relaxation in the solid NaNO3–NaNO2 and KNO3–KNO2 “nitrate–nitrite” binary systems have been investigated by Raman spectroscopy. The relaxation time of the vibration ν1(A) of an NO- 3 anion in the binary system is found to be shorter than that in individual nitrate. The increase in the relax…