Materials Literature
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The co-doping effect of Si and Mn have been studied in the low temperature grown ferromagnetic semiconductor (Ga,Mn)As thin films. It is found that Si doping decreases the Curie temperatures of the ferromagnetic sample due to carrier compensation and defects formation. The transport studies show that the Si incorporat…
Oxygen diffusion in MgO stabilized zirconia has been studied by molecular dynamics simulation method with MOLDY software. The results illustrate that oxygen diffusion in MgO stabilized zirconia can be decided by temperature and amount of MgO. Both increase of amount of MgO and temperature in the system may promote the…
In this study, a multi-layer blending machine was designed to mix cotton evenly. Being put inside via the feeding port, cotton was spread evenly by the oscillator which moves from left to right back and forth successively. Subsequently, cotton was stored as the multi-layer fibrous cotton in the rear reserve tank. Deli…
Tetragonal LaVO4:Dy3+ crystals with novel shapes of rod, rod-bundles and needle-like flower were successfully synthesized via a facile and surfactant-free hydrothermal process. The products were characterized using X-ray diffraction (XRD), scanning electron microscopy (SEM), and photoluminescence spectroscopy (PL).The…
In this paper, pass schedule calculation method for single-stand reversing cold rolling mill is introduced. Newton－Rapshon method is used to solve non-linear equations composed of each pass loads according to equal power rolling strategy. After the thickness of each pass is calculated, rolling parameters of each pass…
PDADMAC fixing agents with different characteristics were used to control dissolved and colloidal substances in P-RC APMP fiber suspension. Results showed that PDADMAC with higher charge density was easier to interact with anionic trash, resulting in better removal of suspended solid materials and chemical oxygen dema…
Nano-structured mesoporous silica with highly ordered 2D hexagonal topology has been synthesized using novel surfactant cetyltrimethylammonium tosylate (CTATos) as template via directly hydrothermal treatment at high temperature of 175 °C and varied crystallization time. The maximum pore wall thickness is up to 2.2 nm…
The modified Landau-Devonshire thermodynamic theory has been used to investigate the ferroelectricity of Pb(Zr0.7, Ti0.3)O3 film grown on MgO substrate. A set of gradient thermal stresses is imposed on the films. The stress-temperature diagram, the spontaneous polarization and the dielectric susceptibility at 25°C on…
In this study, papercut-like carbon sheets with an average size of about 20 nm in thickness have been successfully synthesized by the pyrolysis of tetrachloromethane and calcium carbide in an autoclave in 600 °C in the existence of alloy (Fe-Co-Ni). The X-ray powder diffraction (XRD) reveals amorphous carbon nature of…
In this paper, we present a novel approach for the synthesis of carbon microspheres via the polymerization of a high internal phase emulsion (HIPE). By using Span 80 and Tween 80 as emulsifiers, 1iquid paraffin as oil phase, and the mixture of resorcinol/formaldehyde (R/F) solution as aqueous phase, an O/W emulsion wa…
Study on the preparation processing of E-ACE.By experimental methods, the conductivity, the mechanical flexibility of the electrode material and the thickness of the acrylic polymers were studied respectively. Experimental results show that the conductivity of electrode material have an impact on the performance of E-…
The mCMC/TiO2-Oxine/mCS bipolar membrane (BPM) was prepared by carboxymethyl cellulose (CMC) as an anodic layer and chitosan (CS) as a cathodic layer modified by Cr3+ and glutaraldehyde as linking reagents, respectively. The Nano-TiO2 modified with the photosensitizer oxine was taken as a photocatalytic interlayer to…
The article intends to introduce the authors’ experimental study on adsorption behaviour of chitosan and poly(acrylic acid) solution on silica by reflectometry. pH effect on adsorption-desorption of Chitosan and interaction with poly(acrylic acid) polyelectrolyte multilayer on silica has been studied. Builting multila…
Abstract isolation and structure elucidation of torrilliolide (I) and torricelline (II)
Mesoporous silica nanotube bundles with short channels were synthesized through a surfactant-templated process with the addition of dodecane. Transmission electron microscope (TEM) and high resolution scanning electron microscope (HRSEM) studies show that the channels of the silica nanotubes are parallel gathered in n…
B4C ceramics were obtained using hot-pressing method. The effect of different sintering temperatures on the microstructures and mechanical properties of B4C ceramics were investigated. Oxidation resistances were studied over the range 600-850°C. The experimental results showed that the relative density, bending streng…
Shocking temperature rise of the shaped charge with porous liner before collapse was calculated based on the Herrman equation of state. Shaped charges with 36mm charge diameter were used to fire at the 603 armor steel target, the penetration-standoff curves(P-S) of the shaped charge liner with 88.6% and 90.3%T.D were…
In this study, we investigated that of Al/ Ba(Zr0.1Ti0.9)O3 (BZT)/Pt/Ti/SiO2/Silicon metal-ferroelectric-metal-insulator-semiconductor (MFM) ferroelectric structures and found the memory effect and capacitance of annealed BZT films during the different annealing temperature. Additionally, the capacitance and leakage c…
The misfit-layered copper-manganese oxides(CMO) was successfully synthesized by inserting Cu(OH)XY+ into Buserite under hydrothermal conditions and characterized by X-ray diffraction, AAS, SEM, TEM and BET. The single misfit-layered CMO can be obtained when Cu/Mn mole ratio is 0.67. SEM and HRTEM reveal that the as-sy…
Along nucleation → crystalline growth →crystalline fraction → critical cooling rate, the relationship between the nucleation, elements, cooling rate and the Glass Forming Ability of (Cu-Zr) based glass alloys is quantitatively studied with thermodynamics method, and a better method to evaluate the critical cooling rat…