Materials Literature
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It is shown that 2 wt% clay-reinforced nylon and 4 wt% clay-reinforced nylon have similar tensile strengths, which are increased by about 30% compared to those of nylon 6. With an increase in loading rate, the ultimate tensile strength increases for both nylon 6 and nanocomposites, and the ductility decreases for nylo…
Water-soluble CdTe nanocrystals are ultrafast synthesized in less than 10 s via the chemical aerosol flow method.
The influence of inorganic precursors on phase evolution and powder sinterability of YAG has been investigated. YAG powders were synthesised by reverse-strike precipitation, from yttrium and aluminium chlorides or nitrates aqueous solution. The powders were characterised by thermal analysis and XRD measurements. Pure-…
Two samples of calcic bentonite of the Santa Elena Peninsula, Ecuador, were pillared with Al13 ions in the ratio of 10, 15 and 20 meq of Al g-1 of clay, calcinated at 573, 723 and 873 °K and acid activated with 4, 6 and 8 mol L-1 H2SO4. Analyses by X-ray diffraction, X-ray fluorescence, differential and gravimetric th…
We report the enhancement of the electroluminescent property of organic light-emitting diodes (OLEDs) using as a hole injection layer between indium tin oxide (ITO) anodes and -bis[ -(1-naphthyl)- -phenyl-amino]biphenyl . The operation voltage for of OLEDs with a 10 Å thick layer decreased from 24.5 to 14.7 V, and the…
Tin (Sn with 5% of Si by weight) can be used as a liquid substrate to fabricate ZnO/SiO(2) hierarchical nanostructures and self-assemble these three-dimensional nanostructures into a vertical array at the same time.
Proton transport properties of three thin films (110, 240, and 360 nm thick films) on R-plane (1102) sapphire substrates for oligomeric poly[(1, 2-propanediamine)-alt-(oxalic acid)] were investigated. The maximum proton conductivity of the thin film is 1.7 × 10-3 S cm-1 at the RH of 80%, which is five times higher tha…
We previously proposed the toughening and strengthening mechanisms of alumina-based nanocomposites on the basis of dislocation activities, assuming that nano-sized particles were embedded within the alumina grains. In this research, we fabricated both intragranular dominant and intergranular dominant nanocomposites of…
In this work the effect of 1 % at additions of Ti or In on structural and thermal properties of the Au 49 Ag 5.5 Pd 2.3 Cu 26.9 Si 16.3 [1] alloy is presented. Formation of a glassy phase was confirmed using X-ray diffraction for rods up to 3 mm in diameter. Data on glass transition, T g , and crystallization, T x , t…
Biosubstrate-sensitizer binding is one of the factors that enhances the type-I mechanism over the type-II in the whole photodynamic process. 2,7,12,17-Tetraphenylporphycene (TPPo), a second-generation photosensitizer, is a hydrophobic compound with good photophysical properties for photodynamic therapy applications th…
This paper describes the use of modern measuring and data acquisition system for determining characteristics of feromagnetic material. For this purpose data acquisition card NI USB-6009, PC with data acquisition software and fluxmeter Electrical Steel Measuring System MPG 100 D were used. Based on the results obtained…
Bi-based glass powders with nanometer size as the additive of conducting paste were directly prepared by flame spray pyrolysis. The mean size of the powders increased from 37 to 52 nm as the concentration of spray solution was changed from 0.05 to 1 mol/L. The nano-sized glass powders prepared by flame spray pyrolysis…
In the present paper an approach for evaluation of critical exponent of the order parameter at the diffused phase transition is developed on the basis of optical activity data.The temperature dependence of the optical activity in Pb 5 Ge 3 O 11 :Cu 2+ crystals is experimentally studied.The critical exponents obtained…
ジチオレン配位子を有する金属錯体あるいは有機金属錯体（ジチオレン錯体）は，そのπ電子の性質から特異的な光物性・伝導性・磁性を示し，さまざまな分野への応用が期待されている。本稿ではこのジチオレン錯体について，その歴史的背景から近年の応用例について，おもに光応答性とその応用分野を具体的な例を挙げながら紹介する。
Temperature dependences of spontaneous and induced electrogyration are studied for the crystals of lead germanate doped with Li, Eu, La, Nd and (Li, Bi). Critical fluctuations observed in the optical parameters near ferroelectric phase transition point are explained in frame of the first fluctuation correction to the…
Reproducibility of plasma etching processes is a critical issue for metal/high-k gate stack patterning because of progressive modification of the reactor wall conditions. Periodic dry cleaning of the etching chamber in appropriate plasma chemistry allows the achievement of acceptable reproducibility. The authors have…
The polythermal (over the temperature range 20–80°C) solubility of fullerene bromo derivatives C 60 Br n ( n = 6, 8, 24) in several solvents ( o -xylene, o -dichlorobenzene, n -decanol-1, and enanthic acid) was studied. The corresponding solubility polytherms are given.
Abstract Low and limited hardenability (LH) steels are plain carbon steels characterized by a low content of alloying elements (Cr, Ni, Mo, W, V, etc.). The use of LH steels with an intensive quenching method allows full elimination of the carburization process for a variety of steel parts, such as, gear and bearing p…
A nanoscale patterning approach for ceramic oxides, based on the combination of electron beam lithography and liquid precursor (so-called soft-electron beam lithography, soft-eBL), is elaborated in the context of control over “internal microstructure”. Soft-eBL synergistically combines the traditional top-down approac…
A description of mixtures, including matter diffusion and suspensions, is analyzed from a thermodynamic viewpoint with internal variables. In order to consider dissipative effects due to thermo-diffusion we introduce a set of N independent scalar internal variables, which we denote by γ A . The behavior of the mixture…