Materials Literature
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In order to elucidate details of relaxations caused by the sodium ion in dehydrated Na-A zeolite, a simplified jump model was constructed for the sodium ion on site 3, Na + /S3. In the model, Na + /S3 was set up to jump around among three adjacent unequivalent sites, that is, S3, a position in (or near) the 8-ring (S2…
Steel development as a scientific process requires both metallurgical background and state-of-the-art analysis and testing technology. In the future, we expect much shorter development periods owing to the increased use of computer simulation. Successful developments are the result of consistent team work, both in the…
Abstract Natural rubber based waste latex rubber (WLR) that is reclaimed with diphenyldisulphide by a thermo-mechanical process is blended with virgin rubber in different proportion to study the change in mechanical and viscoelastic properties. Two types of WLR differing mainly in the amount of polysulfidic linkages a…
Combined studies of the impedance and magneto-optical properties of porous silicon-cobalt nanocomposites are carried out. Correlations between the charge transfer over a nanocomposite layer and the spectral response of the transverse Kerr effect are revealed.
Simple synthesis of luminescent europium(III) and terbium(III) chelates tethered to a maleimido function (7, 8) is described. The method is based on the following: (i) synthesis of protected ligands tethered to a maleimido function and their purification on silica gel; (ii) deprotection by acidolysis; (iii) conversion…
In this article, the field emission properties of the one-dimensional (1D) nanostructure array grown on doped silicon substrate influenced by the screen effects have been studied via computer simulation. The classical transport equation is used to describe the carrier transport in the material and is solved together w…
Abstract We report the study of the polarized optical absorption, the near‐infrared luminescence and the luminescence excitation spectra of the proper ferroelastic K 3 Na(CrO 4 ) 2 crystals doped with MnO 4 2– ions. It is obtained from the luminescence and the d‐d absorption spectra that the 3d 1 electronic ground ( 2…
Characteristics of epoxy adhesives for special purposes are described. These adhesives are used for joining together various substrates based on polyamides, ferrite, quartz, ceramics, and resins based on fluoroorganic rubbers.
Field emissions of wide-band-gap-material (WBGM)-coated single-walled carbon nanotubes (SWCNTs) were studied. Field emission current was gradually increased after monolayer coating (MgO-coated SWCNTs) and successive double layer coating (CsI∕MgO-coated SWCNTs). The turn-on field decreased from 3.26 to 2.43 and 1.61μAc…
Oxidation of ( PyP H) Fe II Br , an iron(II) complex of 6,11,16,21-tetraaryl-3-aza-m-benziporphyrin ( N -confused pyriporphyrin, ( PyP H) H ) has been followed, in the presence of pyridine, by 1 H and 2 H NMR spectroscopy. One-electron oxidation with dioxygen, accompanied by deprotonation of a C (22) H fragment and fo…
The compatibility of fibroin with polyvinyl alcohol in blend films prepared from a common organic solvent, hexafluoroisopropanol, was studied by IR spectroscopy and DSC.
Abstract Microstructure and texture evolution of an AlMg1Mn0.14 alloy after Equal-Channel Angular Pressing (ECAP) and subsequent heat treatment were investigated. Initially the material was subjected to up to 8 passes with a 90° die angle using routes A and B c . The deformed and annealed states were characterised by…
We have jointly developed the material and processes to integrate silsesquioxane optical waveguides on printed circuit boards for high-speed datacom applications, using a low-loss, reliable and commercially available polymer designed for 850 nm.
A structure comprising two lattices of silver or gold nanospheres is considered. It is shown that this structure can be used as a superlens capable of providing subwavelength imaging of a point source and a sub-wavelength spatial resolution of two sources at a distance within one wavelength.
Abstract We report the growth of ZnO nanorods with pentagonal cross‐section in electrodeposition on p‐type Si substrates. Cathodic potentials smaller than those used for growth of hexagonal nanorods are used. The pentagonal wires have a typical length of 1–2 µm and grow out of an inhomogeneous nano‐crystalline thin fi…
Abstract In this work, the thermoluminescent properties of pellets containing powdered Wollastonite embedded in Teflon were studied. The preliminary results using gamma rays from a 60 Co source showed linearity at the calibration curve between 0.5 Gy and 10 Gy. The main TL peaks are located at 125, 200 and 245 °C. The…
The paper presents results of a demonstration experiment on conversion of 50 kg of weapon-grade plutonium in the form of metal ingots into granulated MOX-fuel to be used for manufacturing fuel pins and 3 fuel assemblies (FAs) for the fast power-generating reactor BN-600, irradiation parameters of these FAs and the dat…
Abstract The time‐resolved emission spectroscopy using the fs‐laser pulse and ps X‐ray excitations was employed to compare the luminescence characteristics of the liquid phase epitaxy grown ZnO films and the hydrothermally grown single crystals. Reabsorption of the excitonic emission is demonstrated in the bulk ZnO. I…
The bending performance of fabric air beams varies significantly from conventional beams. Both are dependent upon the constitutive relations of the material, but air beams are further dependent upon the thermodynamics of the internal air. As the governing energy balance demonstrates, air beam bending is dependent upon…
In this work, experimental investigation is carried out in order to design and fabricate the UHF sensor that is able to detect the partial discharges produced from 10 artificial defects introduced into the real scale 70kV GIS mock-up under high voltage within a well shielded room. As well, in order to verify the on-si…