Materials Literature
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The terminal solid solubility (TSS) of hydrogen during hydride dissolution/precipitation is determined by differential scanning calorimetry technique for nonirradiated hafnium (Hf) that is used as control rods of light water reactors. The hydrogen concentration in hydrogenated Hf samples ranged from 27 to 300 wt ppm.…
We calculate the transverse magnetoresistance in layered electronic systems at nonquantizing magnetic fields parallel and perpendicular to the layer plane and discuss the effect of the relationship between the Fermi level and the mini-band width, and also the direction and magnitude of the magnetic field on the transv…
The synthesis, crystal structure, thermal expansion and electrical conductivity of the ceramic oxide materials (Nd1–xCax)CoO3 (0≤x≤0·5) were investigated. These powders with perovskites structure were synthesized using the sol–gel method. Compositions have a pure orthorhombic structure up to 0·3 Ca doping. The lattice…
Multilayer structures of nanocrystalline (nc-) SiC/silicon nitride spacer/Ag island films were designed by varying the spacer thickness, and the spectral characteristics of surface-plasmons (SPs)–enhanced photoluminescence (PL) in nc-SiC films have been investigated. The optical transmission spectra show that there ar…
The structural parameters, energies, and spectroscopic characteristics of singlet and triplet titanium porphyrin π-complexes Ti(P)(π-L) (P = C 20 H 12 N 4 ) with the axial ligands L = C 2 H 2 , C 2 H 4 , N 2 H 2 , HCN, C 6 H 6 , N 2 , and C 60 coordinated to the Ti atom through C-C, C-N, and N-N multiple bonds have be…
Calcium (Ca)-atom-encapsulated single-walled carbon nanotubes (Ca@SWNTs) are successfully formed by an ion irradiation method using Ca plasma. The electrical transport properties of Ca@SWNTs are experimentally investigated under a field-effect transistor configuration in vacuum and air. The conductance of Ca@SWNTs cha…
2-dimensional dopant mapping in the scanning electron microscope is based on the variation of contrast as a function of differences in the number of active dopant atoms. It was put forward as a potential technique for dopant mapping on the nano-scale in response to the challenge of ever-shrinking device dimensions. It…
Advances in Solid-State Lasers: Development and Applications 2 medium disk with mirrors in order to absorb sufficient pump power, which makes the laser system extremely complicated. Some applications require that the lasers should be compact and economic; therefore, the cooling system is eliminated in compact and easi…
The magnetic structure of the noncentrosymmetrical cubic ferromagnets with Dzyaloshinskii-Moriya interaction Mn 1− y Fe y Si with y = 0, 0.06, 0.08, and 0.1 has been studied by means of the small angle neutron diffraction and magnetization measurements. These compounds are shown to be ordered into the helix structure…
Ce 3+ -doped yttrium lanthanum oxide (Y 0.9 La 0.1 ) 2 O 3 transparent ceramics is fabricated with nanopowders and sintered in H 2 atmosphere. The spectral properties of Ce:(Y 0.9 La 0.1 ) 2 O 3 transparent ceramics are investigated. There appear two characteristic absorption peaks of Ce 3+ ions at 230 nm and 400 nm,…
A new synthesis technique of carbon nanofilaments in a cold wall reactor (CCVD method with inductive heating) has been achieved and improved in the laboratory where the authors are working. This method was a world premiere (Lupu et al., 2004). Compared to the classical method, this technique is suitable for the synthe…
A general method of estimating constitutive equation of material from experiment of free oscillation is presented. The information on attenuation and frequency in the oscillation changing the environment temperature is utilized to estimate the linear visco-elastic constitutive equation with deformation process. Linear…
The lattice parameter for polycrystalline diamond is determined as a function of temperature in the 4-300 K temperature range. In the range studied, the lattice parameter, expressed in angstrom units, of the studied sample increases according to the equation a = 3.566810(12) + 6.37(41) 10 -14 T 4 (approximately, from…
This paper presents development of a defect monitoring sensor using electromagnetic acoustic transducer (EMAT). The present study investigates the possibility of the defect monitoring using a new EMAT structure. The current EMAT was unsuitable for monitoring because of the large sensor area, and also it was necessary…
This paper reports results producing anode-supported YSZ electrolyte thin films by magnetron sputtering method for solid oxide fuel cell applications. Pulsed electron-beam treatment was used for preprocessing porous anode substrates for the purpose reducing their surface porosity. Microstructures of the anode substrat…
We describe the synthesis and characterization of metal-encoded polystyrene microspheres by multiple-stage dispersion polymerization with diameters on the order of 2 μm and a very narrow size distribution. Different lanthanides were loaded into these microspheres through the addition of a mixture of lanthanide salts (…
Gida muhendisliginde optimizasyon, proseslerde islem verimi ve urun kabulunun yuksek olmasi icin kullanilan onemli bir aractir. Yanit yuzey yontemi, optimizasyonu da iceren istatistiksel bir tekniktir. Prosesi etkileyen parametreler bagimsiz degiskenler, yanitlar ise bagimli degiskenler olarak adlandirilmaktadir. Opti…
The formation conditions and physicochemical properties of binary decavanadates M4Na2V10O28 · 10H2O (M=K, Rb, NH4), synthesized by crystallization from saturated solutions of the NaVO3-MH2AsO4-H2O systems, were studied by chemical analysis, X-ray powder diffraction, microscopy, thermogravimetry, and IR spectroscopy. T…
In the present work, the effect of water on some physical properties of false-twist textured polyamide 6 yarn was studied. A laboratory false-twist texturing machine was modified by a water bath in order to wet the feed yarn before entering the texturing zone. Polyamide 6 yarn was textured at the texturing speeds of 5…
Problems of analysis and optimization of axisymmetric shells of piece wise constant thickness are studied. The cases of quasistatic and dynamic loading are considered separately whereas the shells may be manufactured from both, elastic and inelastic materials. Minimum weight designs of inelastic shells of piece wise c…