Materials Literature
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Three procedures (P) were applied to prepare silver nanoparticles on natural Ca-montmorillonite (MT). The intercalation of the montmorillonite with silver nitrate in aqueous solution (P1), the intercalation of the montmorillonite with silver nitrate in glycerol (P2) and the successive combination of both P1 and P2 met…
BaCe0.8Pr0.2O3- ceramic was synthesized by high temperature solid-state reaction. The structural characteristics and the phase purity of the crystal were determined using powder X-ray diffraction analysis. By using the methods of AC impedance spectroscopy, gas concentration cell and electrochemical pumping of hydrogen…
Structural and magnetic properties of SmCo5 thin films grown on glass substrates with a Cr underlayer were investigated. The nanocrystalline SmCo5 film with a (112¯0) texture exhibited high in-plane intrinsic coercivity up to 26.5 kOe and a large in-plane magnetic anisotropy. The crystallinity of the SmCo5 layer plays…
Composition and structure dependence of the shift in the position of the surface plasmon resonance band upon introduction of NaBH4 to aqueous solutions of gold and silver nanoparticles are presented. Silver and gold nanoalloys in different compositions were prepared by co-reduction of the corresponding salt mixtures u…
Single crystals of LuAG doped with Pr3+ions (0.2 mol%) are grown by the micro-pulling-down (mu-PD) method with an RF heating system. The as-grown crystals are confirmed to be of garnet-type structure with the space group of Ia3d (230). The emission-excitation spectra and luminescence decay kinetics are measured in the…
It is well known that organic enamels commonly used for the insulation of the wires used in the windings of low voltage electrical machines can suffer premature failures due to the degradation induced by partial discharges (PD) activity. Nanocomposite polymers can represent an innovative and powerful solution to this…
The influence of the simultaneous polarized optical treatment (10-ns Nd:YAG lasers with a poser density of 3.6 GW/cm 2 ) together with an electrostatic DC-electric field (up to 8 kV/cm) on GeS 2 -Ga 2 S 3 -AgX (X = Cl, I) and GeS 2 -Ga 2 S 3 -KBr chalcohalide glasses is explored. The maximal second-order susceptibilit…
Junfang Renab, Honggang Wanga, Lingqi Jiana, Junyan Zhanga* & Shengrong Yanga* a State Key Laboratory of Solid Lubrication , Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences , Lanzhou, P. R. China b Graduate School of the Chinese Academy of Sciences , Beijing, P. R. China * State Key Laboratory of So…
A semianalytical solution for the 3ω method is derived to account for thermal conduction within the metallic heater. The existing uniform heat flux approximation between the metal heater and substrate is replaced by a more realistic uniform heat generation condition within the metal heater. Although this correction do…
Using dislocation-kinetics equations, the structural factors are discussed that determine the strength and plastic properties of nanocrystalline metals with a bimodal grain structure containing not only nanograins but also a certain volume fraction of micron-sized grains. It is found that the plasticity (uniform strai…
Abstract Honeycomb‐patterned film was prepared by casting chloroform solution of hydrophobic polymer and dye‐containing amphiphilic copolymer under humid conditions. The confocal laser scanning microscopy image shows that amphiphilic copolymer is localized around the pores of the honeycomb‐patterned film.
Graphene holds great promise for future electronic technology. It has very high mobility even for thin films, and is compatible with high-k dielectrics. Thus while it is too early to speculate on graphene replacing silicon as the material of choice for electronics, the potential of carbon based devices should not be u…
Abstract Cathepsin B belongs to lysosomal cysteine protease of the papain family. Temporal and spatial expression analysis of cathepsin B of Bombyx mori (BmCtB) was carried out based on Expression Sequence Tags (ESTs) data, oligonucleotide microarray, reverse transcription polymerase chain reaction (RT‐PCR) and quanti…
Over the past 30 years handheld instrumentation has been developed that enables the detection of partial discharge activity with the plant in normal service. The continuing challenge in making meaningful field based partial discharge measurements is to reliably relate the severity of any detected partial discharge act…
Suppression of afterglow in co-doped CsI:Tl is found to be an order of magnitude more effective in CsI:Tl, Sm than in CsI:Tl, Eu. Rate equations predict that deep electron traps introduced by co-doping with samarium effectively scavenge electrons from shallow traps associated with thallium, thus suppressing afterglow…
Abstract Lizardite- 1T crystals from Gew-graze at the Lizard, Cornwall, of an apparent composition (Mg 2.94 Fe 0.03 Al 0.03 )(Si 1.97 Al 0.03 )0 5 (OH) 4 , have been observed to contain 2–5% of thin interstratifications of clinochlore when investigated by analytical transmission electron microscopy (TEM). The clinochl…
Electroplated Cu films exhibit a microstructure evolution at room temperature, called self-annealing. The kinetics of this recrystallization process is strongly influenced by plating conditions in the form of Cu film thickness, current density, and additive content in the electrolyte. Existing models have been used an…
An understanding of mechanism of partial discharge (PD) in SF6gas is critical for diagnosis of PD in electric power equipment. Moreover, analysis of PD mechanism contributes to the optimization of the design of electric power applications. For these reasons, we study in detail about PD mechanism by measuring light emi…
Interconnect process features are described for a 45nm high performance logic technology. Through extensive use of highly manufacturable carbon doped oxide low-k dielectric layers and aggressive scaling of the SiCN etch stop film the Metal-1 to Metal-8 interconnect stack demonstrates a 10% average capacitance reductio…
There are many statistics dealing with failure causes of high voltage rotating machines. While these statistics prove the relevance of the insulation as failure cause, they give little information on the real failure mechanism. This paper gives results of a research project which was launched to investigate degradatio…