Materials Literature
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Ammonium acetate K does not adequately measure available K in the mineralogically diverse maize ( Zea mays L.)‐producing soils of Thailand. The objective of this study was to understand the causes of this problem and propose a solution using laboratory and greenhouse experiments to examine the release patterns and the…
Polymorphism and dehydration process have been studied by the micro-Brillouin scattering technique in hen egg white lysozyme crystals without cross-linking. Two types of crystal with tetragonal and monoclinic systems have been successfully grown by the two-liquid interface method. The dehydration processes of tetragon…
An experimental apparatus has been designed and constructed to accurately measure the next generation of high-performance thermal interface materials with unprecedented precision and accuracy. The apparatus is based on a common implementation of ASTM D5470 using meter bars. However, the apparatus in the present study…
Attempts were made to synthesize a nanocrystalline spinel phase by mechanical milling and subsequent annealing of Al–Ni–Fe decagonal quasicrystalline alloy. The milling of the decagonal phase was carried out in an attritor ball mill at 400 rpm for 1–40 h with ball to powder ratio of 100 : 1 in hexane medium. Subsequen…
The amphiphilic block copolymers methoxy poly(ethylene glycol)-poly(ε-caprolactone) was grafted to 2-hydroxyethyl cellulose to produce the water-soluble copolymers. Doxorubicin loaded nanoparticles were prepared by dialysis method and the sizes of nanoparticles were determined by dynamic light scattering in solution a…
Ge2Sb2Te5(GST)-based phase change memory (PCM) is a digital memory technology set to replace flash because of its greater scalability, lower programming power requirements, faster read-write times, and enhanced durability. Modeling efforts have focused on characterizing the coupled electrical, thermal, and phase-trans…
Epitaxial 0.67Pb(Mg(1/3)Nb(2/3))O(3)-PbTiO(3)-0.33PbTiO(3) (PMN-PT) thin films with electro-optic effects were fabricated on (PMN-PT) thin films with electro-optic effects were fabricated on (La0(0.5)Sr0(0.5))CoO(3) (LSCO)/CeO(2)/YSZ-buffered Si(001) substrates using double-pulse excitation pulsed laser deposition (PL…
The general context of this paper is introduction of a crystallization model into 3D software dedicated to a thermomechanical description of the injection-molding process. From the Kolmogoroff-Avrami-Evans equation for overall kinetics and from additional assumptions on nucleation, a system of differential equations i…
MgxZn1−xO thin films were grown by the radio-frequency magnetron sputtering technique in Ar + N2 and O2 + N2 ambient with different nitrogen partial pressure ratios on quartz substrates at 773 K. The correlations between the growth ambient and the resultant films properties were discussed. It is found that Mg concentr…
As IC performance increases, many technical challenges appear in the areas of current-carrying capacities, thermal management, I/O density, and thermal-mechanical reliability. To address these problems, the use of aligned carbon nanotubes (CNTs) has been proposed in IC packaging for electrical interconnect and thermal…
The anisotropic magnetic, electrical and thermal transport properties were studied of a single-crystalline Al80Cr15Fe5 approximant to the decagonal quasicrystal. The temperature-dependent electrical resistivity along the b and c crystalline directions shows non-metallic behaviour with a broad maximum, whereas it exhib…
xBiFeO(3)-(1-x)PbTiO(3) single crystals were grown via a flux method for a range of compositions. Presented here is a study of the domain configuration in the 0.5BiFeO(3)-0.5PbTiO(3) composition using electron backscatter diffraction to demonstrate the ability of the technique to map ferroelastic domain structures at…
Abstract Gaseous hydrogen transport at pressures of 15 MPa is envisaged as a means of hydrogen delivery from central production facilities to refueling stations for the planned hydrogen economy. The study of the hydrogen embrittlement of medium or mild strength steels, which are under consideration for pipeline materi…
Although quasicrystals have been studied for 25 years, there are many open questions concerning their stability: What is the role of phason fluctuations? Do quasicrystals transform into periodic crystals at low temperature? If yes, by what mechanisms? We address these questions here for a simple two-dimensional model…
Experimental data are used in an attempt to unravel the mechanism underlying the effect of modification of a graphite blend by fullerenes on the diamond synthesis at high pressures and temperatures in the presence of metal catalysts. Diamonds have been synthesized under different conditions in a wide range of temperat…
Toluene, the alkyl benzene, is a common constituent of contaminant streams emitted by hydrocarbon fuel combustion systems. The oxidation of toluene to less toxic compounds can be enhanced through catalysis. The capacity of Mn-Ce/gamma-Al2O3 to catalyze toluene oxidation was investigated using a fixed bed flow reactor,…
Abstract Sufficient mechanical ductility of high-burnup Zircaloy-4 fuel cladding is important to prevent large-opening ruptures and significant fuel dispersal during postulated in-reactor and spent-fuel processing accidents. The effect of irradiation, oxidation, and hydriding at high fuel burnup may degrade cladding d…
X-ray diffraction and electron microscopy were used to study the structural states of precursors of borates LuBO 3 , YBO 3 , and EuBO 3 , garnets Lu 3 Al 5 O 12 and Y 3 Al 5 O 12 , and perovskites LuAlO 3 and LaAlO 3 prepared by solvent thermolysis from a nitric-acid solution or an ammonium nitrate melt solution of si…
The effects of the concentration of a number of dyes in an aqueous solution and of the method of formation of mixed nanostructures of dyes and Eu(MBTA)3phen (MBTA is p-methoxybenzoyltrifluoroacetone; phen is 1,10-phenanthroline) complexes that form these structures on the luminescence decay kinetics of Eu(III) ions ar…
Within a nonempirical model of an ionic crystal with the inclusion of the dipole and quadrupole ion polarizations, the lattice vibrational frequencies, high-frequency dielectric constant, Born dynamic charges, and the elasticity moduli of the BiFeO 3 crystal have been calculated and their dependencies on the hydrostat…