Materials Literature
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Uniform and aligned ZnO nanotube arrays have been synthesized by annealing Zn nanowire arrays in anodic aluminum oxide (AAO) membrane. In our method, Zn nanowire arrays were fabricated by electrochemical deposition technique based on ordered nanoporous AAO, and then a heat-treatment method was used to convert Zn nanow…
Write strategy tuning for optical recording devices (ORDs) is laborious and time consuming. An automated learning approach based on the genetic algorithm (GA) is proposed to automatically learn the write strategy implemented in an ORD for dye recording media. To evaluate the writing performance associated with every s…
The steady-state and transient electron transport in ZnO field effect transistor have been studied using an ensemble Monte Carlo simulation which takes into account the hot-electron transport phenomena. The simulated device geometries and doping are matched to the nominal parameters described for the experimental stru…
Abstract CeCoIn5 is a heavy fermion superconductor with the transition temperature Tc = 2.3 K, while in a related material CeRhIn5 the superconductivity is highly suppressed and an incommensurate antiferromagnetic (AFM) order characterized by the propagation vector qh = (1/2, 1/2, 0.297) appears below TN = 3.8 K. From…
The deposition of lanthanum boride ( LaB 6) thin films by the DC magnetron sputtering were studied. XRD, AFM and Stylus Profiler were used to characterize the properties of the deposited films. The XRD was used to study the crystallinity. The results of the XRD showed that the dominant crystal face is the (100) face.…
Recently, several different models of 125I and 103Pd brachytherapy sources have been introduced in order to meet the increasing demand for prostate seed implants. These sources have different internal structures; hence, their TG-43 dosimetric parameters are not the same. In this study, the effects of the dosimetric di…
In this paper, we investigate the elastic behavior of M -arm star polymers in good solvents under an external force X exerted on each end of the arms in the x direction. In the region of small X, there is a slight difference in the linear elastic behaviors of a single chain and star polymers. In the case of a single c…
As pesquisas sobre o tratamento térmico em painéis OSB (oriented strandboard) vêm buscando reduzir a higroscopicidade dos painéis, bem como aliviar as tensões geradas durante o processo de prensagem. Entretanto, o tratamento térmico acima de 160ºC pode causar inativação da superfície da madeira, tornando-a mais lisa,…
Nanocrystalline Y0.5Sm0.5Co5 ribbons were obtained by melt spinning using a copper wheel surface speed of 40 m/s. X-ray diffraction patterns from the as-cast ground alloy and from the melt-spun ribbons were indexed as CaCu5-like hexagonal structure. Crystallographic texture was observed and a dendritic microstructure…
Abstract The functionalization reactions of ethylene–propylene–diene monomer rubber (EPDM) with maleic anhydride (MAH) in melt state through high‐shear‐stress‐induced initiation by an increase in the screw rotation speed of the twin‐screw extruder and through compounded initiation by the addition of some initiator and…
There is a general trend towards a continuous increase in fresh market sales of mushrooms and many methods have been researched to improve quality and shelf life during storage and marketing. As it is known, mushrooms are a very perishable commodity, with very high respiration rate and rapid quality deterioration, whe…
Reactions of fresh M(OH)2 (M = Zn2+, Cd2+) precipitate and (RS)-2-methylglutaric acid (H2MGL), 2,2′-bipyridine (bipy), or 1,10-phenanthroline (phen) in aqueous solution at 50°C afforded four new metal–organic complexes [Zn2(bipy)2(H2O)2(MGL)2] (1), [Zn2(phen)2(H2O)(MGL)2] (2), [Cd(bipy)(H2O)(MGL)] · 3H2O (3), and [Cd(…
Samarium calcium perovskite manganite Sm0.65Ca0.35MnO3 was dispersed homogeneously in a solution of poly(styrene-co-acrylonitrile). A thin film was deposited on (100) oriented silicon substrate by spin-coating and the optical thermochromic behaviour in the infrared range was studied. In the wavelength range 8?14??m, t…
Thick coatings of barium hexaferrite with the compositions BaFe 12 O 19 and BaCoTiFe 10 O 19 were prepared using high‐velocity oxygen‐fuel (HVOF) spraying technology. Nanocrystalline precursors embedded in an amorphous matrix were obtained on both Fe and glass–ceramic substrates. To promote the crystallization of the…
Recent developments in solid-state NMR techniques helped acquire high-resolution NMR spectra for solid systems with structural disorder. But the structural origin of the observed chemical shift nonequivalence in these systems has not been revealed. We report a quantum chemical investigation of the solid-state NMR spec…
A novel calcium phosphate cement (CPC) was prepared by dry‐mechanochemical rout in this work. With the different crystallinity, the CPC showed the different degradation ratio after setting. The degradation ratio of CPC was characterized by the calcium ion‐dissolving ratio in deionized water after different soaking tim…
We propose a way of producing and detecting pseudospin entanglement between electrons and holes in graphene. Electron-hole pairs are produced by a fluctuating potential and their entanglement is demonstrated by a current correlation measurement. The chirality of electrons in graphene facilitates a well-controlled Bell…
The effect of alignment on the nematic to isotropic phase transition of bulk octylcyanobiphenyl reveals a reduced time and temperature lag with possible solutions to the time response and backlight bleed drawbacks of liquid crystal displays (LCDs). The aligned octylcyanobiphenyl shows a quicker and early occurrence of…
Abstract The phase diagram of polymer solutions (cf. e.g. alkanes dissolved in supercritical carbon dioxide) is complicated, since there are four control parameters (temperature, pressure, monomer volume fraction, chain length of the polymer) and due to the interplay of liquid‐vapor transitions and fluid‐fluid unmixin…
The reactions of [Cu(R-pySe)], R = H, 3-CF(3), with 2,2'-bipyridine or 1,10-phenanthroline in acetonitrile yielded the one-dimensional complexes {[Cu(SeO(3))(phen)] x 2 (H(2)O)}(n), 1, {[Cu(SeO(3))(bipy)] x 2 (H(2)O)}(n), 2. Recrystallization of 1 and 2 from a 1:1 methanol/water mixture led to the formation of the din…