Materials Literature
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Through the theoretical deviation based on charge decay theory a trap level distribution function relative to the isothermal discharge current is given in this paper. Based on that, the effect of AlN(treated)-MMT nanoparticles with different contents of 1wt%, 3wt%, 5wt% on surface trap level distribution is researched…
We present evidences demonstrating that overexpression of IRE1a inhibits chondrocyte differentiation, as revealed by reduced expression of Col,,SOX9, ColX, MMP-13, IHH, Runx2. Furthmore, IRE1a-mediated inhibition of chondrogenesis depends on its enzymatic activity, since its point mutant lacking enzymatic activity com…
We have evaluated temperature dependences of transistor characteristics in n-type, p-type, and pin-type poly-Si TFTs for temperature sensor application. It is found that the temperature dependences of the off-leakage currents in the n-type and p-type TFTs are much larger than those of the on currents, which are the sa…
A series of metal-DPDME (metal deuteroporphyrin dimethyl ester) complex were synthesized through dehydrogenation, deferrization, esterification, metal-complexation using hemin as raw materials. Found red shift at Soret band and blue shift at Q band in UV-Vis spectrum which is different from tetraphenylporphyrin, and d…
In this paper, we present some nonlinear optical properties of A2B6mixed crystals grown by the modified high-pressure Bridgman method. We measured the nonlinear refractive index (n2), third order nonlinear optical susceptibility (χ<;3>) and nonlinear absorption coefficient of these semiconductors using the standard ba…
Transparent oxyfluoride tellurite glass-ceramics containing CaF2 nanocrystals were prepared by high temperature melting method. The glass-ceramics were characterized by Differential scanning calorimetry, X-ray diffraction and scanning electron microscope, respectively. The results showed that the CaF2 nanocrystals wer…
Electrochemical or electro co-deposition techniques have been used to deposit particles in metallic matrices to prepare composite coatings. The properties of the composite material can be improved by varying the type, size, amount and distribution of the incorporated particles. The effect factors of particles content…
High-temperature alloy is an important material in making critical aerospace engine parts, it is also used in weapons industry, energy, chemical, power, etc. In this article, DEFORM-3D software applications to establish a three-dimensional cutting model of high-temperature alloy GH4169. Combined with cutting experimen…
In this paper, broadband metasurfaces with the capability to manipulate electromagnetic waves with arbitrary polarizations are studied. Various types of metasurfaces with different geometries will be investigated. The proposed devices will be able to provide the same performance under different polarizations. Metasurf…
We investigated different methods to engineer efficiently a planar defect between two artificial opals. The samples were characterized by atomic force microscopy, scanning electron microscopy and specular reflection spectroscopy. They presented pronounced defect modes within the photonic stopband. These architectured…
Research into silicon solar cells that use a thin fi lm of single walled carbon nanotubes (SWCNTs) as the front electrode is an important area of increasing research activity. The work of Daniel D. Tune et al. (pp. 1479–1487), portrayed in the cover image, provides the fi rst ever direct performance comparison between…
Lanthanide ion doped glass materials find many applications in photonics. In recent years a particular attention has been drawn to lanthanide ion doped low phonon energy glasses and their potential application as amplifiers and lasers delivering mid-infrared coherent light. We present a comprehensive study of the phot…
The surface activity and dynamics of adsorption surface layer formation of individual solutions of 5-methylresorcinol (MR) and its mixed solutions with lysozyme on air/solution (0.05 M phosphate buffer, pH 6.0) interface under conditions of MR maximally exceeding hydrolytic activity of lysozyme are studied using metho…
A novel toroid-structured coated nano particle (T-CNP) antenna with an active core (doped with rare earth ion Er3+) is studied in this paper. It is demonstrated that the active toroid-structured nano particle, when illuminated by an electric Hertzian dipole (EHD) (small current) element, acts as a strong radiator at i…
The luminescence of nominally pure magnesium oxide crystals irradiated in a nuclear reactor is studied. It is shown that, in the entire fluence range (10 15 –10 18 n/cm 2 ), the active luminescence centers are chromium impurity ions, which are initially (<10 17 n/cm 2 ) in the form of Cr 2+ ions and then (>10 17 n/cm…
As the effects of climate change are increasingly recognised interest has been renewed in the development of clean electricity generation methods. The Solid oxide fuel cell, (SOFC) offers electrical conversion at up to 60% efficiency making it a desirable technology. Rolls Royce Fuel Cell Systems (RRFCS) is one compan…
The (Zr0·55Al0·1Ni0·05Cu0·3)100−xNbx alloys have been prepared using an in situ suck casting method in a copper mould. The effect of Nb on the microstructure, mechanical and corrosion properties of the (Zr0·55Al0·1Ni0·05Cu0·3)100−xNbx alloys has been investigated using X-ray diffraction, scanning electron microscopy,…
Front Cover: Sub-micrometers large polyethylene naphtalate and polyimide pillars were fabricated according to a novel bottom-up approach combining thin polymer structuring (polymer-demixing) and plasma etching techniques. The figure presents a SEM 30° titled view picture of a nanopatterned polyimide foil with a random…
A differential dual-band slot antenna is proposed. Dual bands are realized using meander slots in the ground plane. Compared with the conventional half-wavelength antenna, the proposed antenna has a compact size of 60 mm × 60 mm (0.36 λ1× 0.36λ1, λ1is the guided wavelength at f1). In order to improve the radiation per…
The porous graphene oxide (GO) gels were prepared using the process of aqueous gel precursor freezing, solvent exchange, and ethanol drying technology. The GO sheets were consolidated by PVA and the obtained GO-PVA gel was reduced by glucose to prepare graphene nanosheet-SA (RGO-PVA) gel. GO-PVA and RGO-PVA gels exhib…