Materials Literature
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This paper presents the design of quarter-wave retarders for the C and the L bands using two perpendicular reflective metals coated with a single layer thin film. The overall reflection of 81% is achieved for the quarter-wave retarder.
The copper-doped ZnS particles were immobilized on the surface of Hexafluorobutyl acrylate-co-methacrylic acid (poly (HFBA-co-MAA)) which synthesized by bulk polymerization electrospun nanofibers. The fluoropolymer fibers, which have around 200 nm in average diameter, of poly (HFBA-co-MAA) and are obtained by electros…
This paper reports on a study and analysis of parasitic impedances that affect the switching activity of the Forward converter having a high ratio of transformation. The presented Forward converter system is based on the component dimensioning for power output of 400Watts and input voltage of 12Volts. The main objecti…
On-line monitoring of lightning,ice,short circuit on electric transmission line and insulator's operation state is of great significance to ensure the safe and stable operation of the electric transmission line.An intelligent composite insulator,in which the core rod has fiber Bragg gratings is developed.lightning,ice…
Janus particles have attracted increasing attention from the communities of materials science, chemistry, physics and biology. While large size Janus particles are readily achieved, synthesizing Janus nanoparticles (JNP) with diameters smaller than ∼20 nm remains a challenging task. In this article, we report a system…
As advanced semiconductor materials, Ga1-xAlxN alloys are widely used. In order to research the optical properties of Ga1-xAlxN with different Al component, we built models of GaN, Ga0.875Al0.125N, Ga0.750Al0.250N, Ga0.625Al0.375N, and AlN, and calculated the optical properties of the five crystals based on first prin…
Electronic band structure of carbon nanotubes with the Kekule structure is studied by the tight-binding approximation. We give a complete geometrical approach to structural properties of carbon nanotubes with bond alternation, including chiral and achiral tubes. When the Kekule is introduced, all carbon nanotubes beco…
Because of the serious interference coming from the negative frequency in low frequency correction, the traditional correction methods no longer work. This paper proposes an improved ratio method to correct the frequency, phase and amplitude of spectrum peak when the spectral line locates near the left end in spectrum…
For the storage of thermal energy the enthalpy of reversible gas-solid reactions can be utilized. The application of thermochemical energy storage constitutes a promising concept to decouple energy supply and demand in concentrated solar power. In high-temperature applications such as solar towers metal oxides could b…
P-doped SiO2 were prepared by PECVD and one metal shadow mask self-assembled method was used for fabricating oxide thin film transistors gated by such proton conductors. Proton conduction of these films was demonstrated and electrical characteristics of oxide thin film transistors gated by such proton conductors were…
As a small molecule and cationic accelerating agent, octyl hexyl dimethyl ammonium bromide (OHDMAB) is a very effective accelerator in dyeing silk with reactive dyes. In this paper the accelerant mechanism of OHDMAB was studied. The results showed that OHDMAB can promote the aggregating of dye molecules in aqueous sol…
Ag/ZnO powders were synthesized through a precipitation method, using poly(ethylene oxide)-block-poly(propylene oxide) as stabilizer. X-ray diffraction patterns of all prepared powders showed a mixed phase of Ag and ZnO. The existence of metallic Ag on the surface of all prepared ZnO powders was confirmed by X-ray pho…
Pd catalysts and Ce0.5Zr0.5O2 mixed oxides (CZ) was prepared by co-precipitation technique and their physicochemical properties were characterized by specific surface area measurements (BET), scanning electron microscope (SEM), and X-ray diffraction (XRD) techniques. CeO2-ZrO2 solid solutions supported with Pd are inv…
In this study, the resins modified with trimellitie anhydride (named ZT3) or phthalic anhydride (named ZT5) during the post-crossing of chloromethyl low crosslinking macroporous poly-styrene resin were prepared, characterized and evaluated for adsorptive removal of o-aminobenzoic acid (OABA) from aqueous solutions. Th…
Hydro-thermal method was applied to synthesize nanoTiO2particles doped with metal and non-metallic elements. nanoTiO2particles were doped at different calcinations temperatures with S and Fe, Ce and La, respectively. X-ray diffraction results indicated that the minimum diameter of nanoTiO2doped with Ce and S was about…
The mechanism of TFE-P copolymer peroxide vulcanization in the presence of N, N - meta-phenylene-bis-maleimide (MPBM) was investigated by MDR Rheometer and DSC method. The results show that β-chain-scission reactions are present in TFE-P copolymer peroxide vulcanization, and the rate of β-chain-scission increase in hi…
In order to understand the reaction mechanisms of NO removal in Dielectric Barrier Discharge reactor, the effect of gas composition on plasma reduction of NO was studied. In this experiment, single-layer barrier tube plasma reactor was used to study the influence of O2and C2H4(ethylene) to NO removal rate. The result…
The nonlinear scattering and combinatorial frequency generation by the quasi-periodic Fibonacci and Thue-Morse stacks of semiconductor layers have been investigated taking into account the nonlinear charge dynamics. It has been shown that the mixing processes in passive semiconductor structures are driven by the compe…
Effect of the micro texture of electroplated copper thin film interconnections on stress-induced migration was investigated experimentally and theoretically. The micro texture of electroplated copper thin films changed drastically as a function of the annealing temperature after the electroplating. However, stress-ind…
SCR (Selective Catalytic Reduction) is widely used as a good solution of reducing NOx emissions. For NOx emissions and exhaust noise for heavy-duty diesel vehicles, the paper studied the acoustic performance for the integrated system of SCR and muffler. By analyzing the action of the perforated pipe, the exhaust press…