Materials Literature
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WO 3 and MoO 3 are famous hydrogenphilics, hydrogen loving materials, capable of performing various functions concerning atomic hydrogen. They are active catalysts in photochemical reactions connected with detachment of hydrogen atoms, being, at the same time, capable of accomodating great quantities of the detached h…
Article Crystal structure of 2-carboxybenzaldehyde furan-2-carbohydrazide methanol hemisolvate, C13H10N2O4 · 0.5CH3OH was published on December 1, 2007 in the journal Zeitschrift für Kristallographie - New Crystal Structures (volume 222, issue 4).
In the article are given the results of the researches of the glass sea sponges Hyalonema sieboldi and Ferronema sp. spicules as new object of nano-photonics. The distribution of refractive index over the cross section of spicule is given. It is shown that the presence of organosilicon lamination is the reason for the…
Two high-chromium white cast irons, with compositions of Fe-25Cr-3.1C-2.0Mn-0.7Si and Fe-25Cr-5.2C-2.1Mn-0.4Si, were cast and subjected to various heat treatments. The microstructures wre investigated using scanning electron microscopy and electron back-scattered diffraction techniques. The microstructure and properti…
Carbon nanotubes (CNTs), carbon nanoflakes (CNFs), carbon nanoparticles (CNPs) and other related structures (known as carbon nanostructures (CNSs)) have emerged as a promising class of materials as field electron emitters. They have a low threshold field and a high emission current density which make them attractive f…
Single crystals of potassium zinc phosphate, namely, K 2 (Zn 3 P 4 O 14 ), are grown by crystallization of a glass of the related compound. The crystal structure of the compound is determined using single-crystal X-ray diffraction.
The crystal structure of anion-deficient La0.70Sr0.30MnO3 − δ manganite powders (δ = 0, 0.10, 0.15, 0.20) has been investigated at room temperature by the neutron diffraction method using a high-resolution Fourier diffractometer. The structure data have been refined by the Rietveld method. The crystal structures of th…
The effectiveness of "under-chip" plasma cleaning and its impact on moisture sensitivity level (MSL) performance for flip chip packaging was investigated in this study. A customized test vehicle was designed for surface analysis on the flip chip silicon nitride (SiN) passivation and substrate solder mask surfaces. Opt…
Dandelion-like micro-crystallites and long belt-like nanostructures of Sr-V-O materials were synthesized under mild hydrothermal reaction conditions in the presence of mineralizer adipic acid at 220C for 60 h and 180C for 60 h, respectively. Scanning electron microscopy measurements show that the Sr-V-O micro-crystall…
Abstract Cinnamoyloxy ethyl methacrylate (CEMA) was copolymerized with different monomer feed ratios of octadecyl acrylate (ODA) and crosslinked using azobisisobutyronitrile (AIBN) as the initiator and N,N’,N”-trisacryloyl melanine (AM) or N,N’,N”,-trismethacryloylmelanine (MM) crosslinkers. The networks are character…
Zn 1-x Co x O (x = 0.01, 0.02, 0.05, 0.10 and 0.20) diluted magnetic semiconductors are prepared by the sol-gel method. The structural and magnetic properties of the samples are studied using x-ray diffraction (XRD), extended x-ray absorption fine structure (EXAFS) and superconducting quantum interference device (SQUI…
Thermo-optical studies of sodium niobate NaNbO 3 (NN) thin films, deposited by the pulsed laser ablation technique on Si/SrRuO 3 substrates, were performed by spectroscopic ellipsometry in the temperature range 300-550°C. Optical constants at the room temperature were measured in the spectral range 250-1000 nm. Substa…
The processes of phase formation taking place during combustion of Zr and Hf in air have been explored by time-resolved XRD (TRXRD) at a time resolution of 0.1 s. In case of Zr combustion, the final product was found to form in two stages: first the tetragonal high-temperature modification of ZrO 2 is formed (in the c…
Using Te powder as a tellurium source and Na2S as a sulfur source, core-shell CdTe/CdS NPs were synthesized at 50C. UV-visible and photoluminescence (PL) spectra were used to probe the effect of CdS passivation on the CdTe quantum dots. As the thickness of CdS shell increases, there is a red-shift in the optical absor…
The features of diffuse X-ray scattering from samples of the superplastic Pb-62% Sn alloy, (i) subjected to preliminary compression by ∼75% and (ii) deformed at room temperature under the conditions optimal for superplastic flow, have been studied. The diffuse peaks revealed are due to the occurrence of short-range st…
Abstract In order to fully understand the crucial issues of how particles grow during olefin polymerisation, how the morphology evolves, how fines are formed, as well as related key issues it is necessary to develop more sophisticated single particle models than those currently available. Such models should ideally al…
Silicon Rich Oxide (SRO) is a dielectric material that contains Si nanoparticles, thus showing novel physical characteristics which permitsits use in optoelectronic devices. In this work, the composition and structure at the surface, volume and Si/SRO interface of the SRO filmsdeposited on c-Si substrates were studied…
Recently, it is tried to gain products which have new properties by doing changes in different stages of textile production in order to create difference. One of these changes is the adding studies of second, third and even sometimes fourth material into the structure of yarn. These studies can differ depending on the…
A very interesting feature of semiconductor quantum dots(QDs) is the redshift of emission peaks with respect to absorption spectra and its size dependence. The red shift of the emission spectra with respect to absorption spectra is known as Stokes shift, which is commonly observed in semiconductor quantum dots (QDs) a…
Perovskite-type BaTiO(3)/SrTiO(3) (BTO/STO) artificial superlattices were fabricated by the molecular beam epitaxy method. The X-Ray diffraction (XRD) profiles and reflection, high-energy, electron diffraction (RHEED) oscillations during the growth of superlattices indicated that crystalline orientation toward [001] d…