Materials Literature
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The color fastness to washing of silk fibers dyed with scarlet dye was improved by the deposition of a thin polymer film which prevented desorption of the dye in standard soap solution. Dyed silk fibers were coated with polyelectrolytes multilayers (PEM) by following the so-called layer-by-layer deposition method in w…
Highly conductive and transparent Al-doped ZnO (AZO) thin films were prepared from a zinc target containing Al (1.5 wt.%) by direct current (DC) and radio frequency (RF) reactive magnetron sputtering. The structural, optical, and electrical properties of AZO films as-deposited and submitted to annealing treatment (at…
PbO-Ga 2 O 3 -P 2 O 5 glasses containing different amounts of Cr 2 O 3 , ranging from 0 to 1.0 mol%, were prepared. The dielectric properties (viz., constant ε’, loss tanδ , ac conductivity σac over a wide range of frequencies and temperatures, dielectric breakdown strength) have been studied as a function of the conc…
We fabricated a hybrid structure composed of a dye-doped low-molecular-weight cholesteric liquid crystal (low CLC) sandwiched between polymer cholesteric liquid crystal (PCLC) films with the same handedness as the low CLC, and studied its lasing characteristics. Defect-mode lasing was observed with a threshold reduced…
In the last few years we have analysed the factors that affect the structures and luminescence properties of Au(I) compounds, specifically in relation with the presence of aurophilic contacts and their application as cation probes. EXAFS studies have allowed us to obtain for the first time direct structural data of di…
Densities of coherent-scattering lengths in an oxide ion conductor La 0.64 (Ti 0.92 Nb 0.08 )O 2.99 with a double perovskite-type structure (space group P 4/ mmm ) are determined using neutron powder diffraction data by a whole-pattern fitting approach based on the maximum-entropy method. At temperatures of 496 °C, 10…
We have successfully demonstrated a world smallest 0.25 μm2cell 1T1C 64 Mb FRAM at a 130 nm technology node. This small cell size was achieved by scaling down a capacitor stack, using the following technologies: a robust glue layer onto the bottom electrode of a cell capacitor; 2-D MOCVD PZT technology, novel capacito…
The reaction of 2,6-[2-{RN=C(H)}C(6)H(4)](2)C(6)H(3)I [R = Ph (4), Cy (5), 2,6-Me(2)C(6)H(3) (6), 2,4,6-Me(3)C(6)H(2) (7), (S)-alpha-methylbenzyl (8)] with Pd(2)(dba)(3) afforded the NCN diimine pincer palladium complexes [2,6-[2-{RN=C(H)}C(6)H(4)](2)C(6)H(3)PdI] (9-13) by oxidative addition of the C-I bonds of the li…
The heats of adsorption of linear and bridged CO species adsorbed on Ag 0 sites of a reduced 3% Ag/Al 2 O 3 catalyst and of the linear CO species on Ag + sites of the oxidized catalyst are determined as the function of their respective coverages by using the adsorption equilibrium infrared spectroscopy method previous…
Abstract AZ91HP magnesium alloy was melted by CO 2 laser. Compared with as‐received Mg alloy, the grain of the melted layer was refined significantly and the content of Al was increased. The corrosion resistance of the melted layer was improved because of the grain refinement, the redistribution of β ‐Mg 17 Al 12 and…
Phase Transition Characteristics and Nonvolatile Memory Device Performance of ZnxSb100-x Alloys, Park, Tae Jin, Kim, Dae Hyun, Park, Sung Jin, Choi, Se Young, Yoon, Sung Min, Choi, Kyu Jeong, Lee, Nam Yeal, Yu, Byoung Gon
The planar Hall effect (PHE) and magnetoresistance (MR) measurements have been carried out on a GaMnAs ferromagnetic semiconductor. The PHE and MR spectra exhibit interesting two-step magnetization switching behavior arising from the magnetic anisotropy properties of the system. By fitting the angle-dependent planar H…
The effect of surface roughness of insulator on the secondary electron emission (SEE) coefficients was investigated with changing the incident angle of primary electrons. The SEE coefficients were measured using a scanning electron microscope with a single-pulse electron beam (100 pA, 1 ms). As a result, the SEE coeff…
Foi avaliada a inclusão de níveis crescentes de feno de flor-de-seda (Calotropis procera SW) (FFS) em substituição ao feno de sorgo forrageiro (Sorghum bicolor, L.) (FSF) na dieta e seus possíveis efeitos sobre os rendimentos verdadeiro, biológico e comercial, a perda ao resfriamento, o rendimento dos cortes, a compos…
This is the seventh paper outlining a holistic model of atmospheric corrosion. Previous papers have outlined how airborne salinity can be estimated at any given location, how salt deposition onto a surface can be modelled and what forms moisture can take on a plate surface. The present paper develops a model for rain…
Among the seven different forms of (±) modafinil, form I is the most stable variety (at whatever the temperature, T ), and form III is very close to form I in terms of lattice energy. Under high-energy milling (HEM), every modification converts into a defective form III. The inversion of “stability” between form I and…
Realizou-se o levantamento florístico das Coscinodiscophyceae, Fragilariophyceae e Bacillariophyceae (Achnanthales) dos rios Ivaí, São João e dos Patos, pertencentes à bacia hidrográfica do rio Ivaí, município de Prudentópolis, Paraná. Quarenta e uma amostras foram coletadas em março, junho e julho/2002 e janeiro/2003…
Nanotechnology is a rapidly evolving interdisciplinary field based on the manipulation of matter on a submicron scale, encompassing matter between 1 and 100 nanometers (nm). The currently registered nanotechnology patents comprise 35 countries being involved in the global distribution of these patents. Close to 3000 p…
The surface properties of a plastic substrate were changed by a novel surface treatment called atomic hydrogen annealing (AHA). In this method, a plastic substrate was exposed to atomic hydrogen generated by cracking hydrogen molecules on heated tungsten wire. For the substrate, surface roughness was increased and hal…
A simple approach is proposed for fabrication of percolated perpendicular media (PPM). Nano pore array with pore diameter of 12-15 nm and different pore densities has been prepared by anodizing aluminum on silicon wafers. The pore density increases from 3.2times1010cm-2to 11.0times1010cm-2with the decrease in anodizin…