Materials Literature
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Photochemical deposition (PCD) is a technique of film preparation from solutions by UV light illumination. In this study, GaS x O y thin films were prepared on fluorine-doped-tin-oxide-coated glass substrates by PCD from an aqueous solution of Ga2(SO4)3 and Na2S2O3. GaS x O y is a wide-band-gap semiconductor and suita…
The main characteristics of lysozyme globules in solutions, including the sizes of cores and fringelike surface layers, are determined from the data of calorimetry (lysozyme-denaturation temperatures in solution) and light scattering, via the method of atomic contributions, and from the Flory-Fox equation. It is shown…
The frequency dependences of the imaginary and real parts of the permittivity of organic semiconductors based on butyl-substituted erbium monophthalocyanine have been obtained. The static permittivity and damping factor, which characterizes the relaxation processes in the ensemble of phthalocyanine complexes, have bee…
The measurement of many signal parameters using digital sampling relies on synchronisation between the sampling clock and the signal under analysis. Deviations in the frequency of the measured signal from that expected can lead to significant measurement errors. Many techniques for overcoming these problems have been…
Phosphor-doped titania nanoparticles were synthesized by a one step hydrothermal method. These samples which prepared by hydrothermal method exist in anatase phase has much higher photocatalytic activity for methylene blue (MB) degradation. In addition, MB degradation performance of the hydrothermal ones is also super…
The transmission properties of one-dimensional photonic crystals (1DPCs) containing anisotropic metamaterials are theoretically studied. It is shown that the 1DPCs can possess a similar zero average index (zero- ) gaps, the edges of zero- gap are weakly dependent on the incident angles, scale length and the polarizati…
Wet electrostatic precipitator (WESP) has been modernized over the last few decades. They were suitable for controlling slurry droplet, fine particles and acid aerosols. However, the applicability of current wet precipitators was badly limited for the imperfect mode of water film generation, back-corona, higher power…
A novel asynchronous motor maximum-efficiency control strategy by adjusting the ratio of the motor's active power to its reactive power is investigated. The study shows that once the motor's desired speed is given, the motor will be running at the maximum efficiency by making the ratio of active power to reactive powe…
Method to link the results of 10 pF capacitance standards key comparisons (KC) CCEM-K4 and COOMET-K4 are proposed. The link is will be making with using method, which used for EUROMET-K4 and APMP.EM-K4.1, through the results of two linking laboratories who participated in both comparisons (PTB and VNIIM). The outcome…
The main objective of this article is to study the effect of the (nonlinear) Onsager mobility to the phase separation of the binary system, using rigorous bifurcation analysis. In particular, a nondimensional parameter K, depending on the molar density u0 of the homogeneous state, and the critical temperature is deriv…
The surface plasmon characteristics of metal nanostructures have the potential to improve optical absorption in thin film photovoltaics. We present a novel method for simulating and analyzing absorption in the active region of metal nanoparticle enhanced solar cells, capable of determining broad spectrum behavior from…
Graphene holds great promise for applications in future integrated-circuit technology. Despite studies at low fields and low temperatures, surprisingly little data exists on the properties of graphene at practical temperatures and high electric fields required by modern transistors. In this study, we characterized gra…
With the use of high-resolution NMR spectroscopy (600 MHz) and gel-permeation chromatography, the products of anionic polymerization of butadiene initiated by n -butyllithium modified with sodium and magnesium alcoholates are studied. It is shown that a change in synthesis conditions makes it possible to vary the conf…
The paper surveys the apparent power definition for nonsinusoidal unbalanced polyphase systems. Based on fact that zero-sequence voltages do not contribute to the instantaneous power, a new formulation of apparent power in terms of any voltage reference has been proposed.
Au 3 Sn 2 Yb 2 ,trigonal, R3m (no.166), a =4.7684(2)Å, c =46.898(3) Å, V =923.5 Å 3 , Z =6,R gt (F) =0.042, wR ref(F 2 ) =0.101, T =294 K.
In the recent years the driving force for technological change in many respects has shifted towards the design and process of materials that offer a set of responses to external stimuli or environmental conditions. These materials are called “smart materials”. Such responses are designed to fulfil the range of scenari…
We measure the dielectric functions of organic-soluble, functionalized DNAs bearing functional moieties in the near-infrared, visible, and ultra-violet spectra by using spectroscopic ellipsometry. Natural double-stranded DNA is dissolved in water and reacted with carbazole-based trimethyl ammonium bromide, cetyltrimet…
We present our progress in attaining high efficiency nc-Si:H solar cells at high deposition rates with superior light soaking stability. We have focused our effort on three areas: i) improving the spatial uniformity and homogeneous properties for nc-Si:H, such as crystallite grain size and volume fraction, ii) optimiz…
This paper reports on the results of investigations into the dielectric properties of liquid crystals embedded in polycapillary matrices and describes a technique for their measurement. It has been revealed that the chemical structure of the rigid core and the length of mobile alkyl groups of liquid-crystal molecules…
The size of Germanium (Ge) Quantum Dots (GQD’s) in Titanium Dioxide (TiO2) can be tailored, using different techniques like sputtering, laser ablation and sol gel. Similarly the absorption range of Ge may also be broadened in visible and NIR range. We report the use of Ge QD’s to sensitize meso-porous TiO2 film to mak…