Materials Literature
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Serpin (Serine Protease Inhibitor) widely distributes in animals, plants, protozoan, prokaryotes and viruses. Serpin-6 belongs to the superfamily of serine protease inhibitor. In this study, we constructed a prokaryotic vector - pET28a-serpin-6, and used IPTG (isopropyl thiogalactoside) to induce serpin-6 protein expr…
We report nonlinear optical properties of hybrid systems that contain single-walled carbon nanotubes and Coproporphyrin dye suspensions. The studies were performed in Vis-NIR spectral range. Our results depict both bleaching and limiting properties. A phenomenon of optical power limiting synergism is demonstrated.
X-ray emission using pyroelectric crystals is intermittent, and has low intensity and stability. One of the factors for low stability is related to creeping discharge, due to the accumulation of surface electric charges that change in response to the temperature. The time dependence of the net amount of electric charg…
The reaction of Cu-based oxygen carrier with CO during chemical looping combustion was studies using density functional theory (DFT) calculations in this paper. It was found that CO2is formed after CO chemically adsorbed onto CuO surface and it exhibits strong localization properties. Energy barrier with regard to the…
Ordered Co-Ni nanowires have been fabricated by alternating current (AC) electrodeposition method using anodic porous alumina as a template. Transmission electron microscopy (TEM) and scanning electron microscopy (SEM) test results reveal that the samples are polycrystalline with uniform diameters around 50 nm and len…
A quantitative investigation of light extraction efficiency for hemispherical and pyramidal pattern surface textured GaN based vertical light emitting diode (VLED) was reported by various distance and size ratios. There is a significant increase in light extraction efficiency because of increase number of random scatt…
While most of the research on the area of organic field effect transistors (OFET) concentrates on the development and characterization of the semiconductor, the dielectric layer plays an important role on the performance of the device. PVA is an attractive candidate to this role due to its favorable properties. The st…
The effect of temperature and various modifiers on the shape of the X-ray photoelectron spectra of protein (mink albumin) is studied. Metal-containing multiwalled carbon nanotubes and NiO nanoparticles are used as modifiers. The studies are carried out using an X-ray electron magnetic spectrometer. It is shown that mo…
Upon femtosecond laser pumping of a topological insulator Bi2Se3, we observed efficient THz generation from the surface electrons. By performing polarization-resolved studies on the emitted THz spectrum, two emission mechanisms are identified. THz emission spectroscopy provides a valuable spectroscopic tool for studie…
Effects of mercerizing treatment on water-retention value of straw pulp fibers were discussed and the mercerizing treatment conditions were optimized. The best conditions of mercerizing treatment is NaOH concentration of 4mol/L, temperature of 40°C and processing time of 60min. SEM showed that the fiber cell wall swel…
Based on an analysis of the grating coupler, a high-efficiency hybrid surface-normal coupler, which is a combination of a coupler grating, reflector grating and a bottom mirror, was designed to couple a planar waveguide and a single-mode fiber. The negative second-order reflection was reduced by destructive interferen…
In this study, we investigate Cu2O film electrically connected with TiO2 film, as a p-n type heterojunction, for enhancing the photoelectrocatalytic (PEC) activity towards degradation of methyl orange (MO) solution under ultraviolet irradiation. By using a versatile magnetron sputtering technique, the Cu2O films were…
Formaldehyde (HCHO) gas sensors based on pentacene active layer and low cost poly (merthyl methacrylate) (PMMA) insulator were fabricated with a structure of bottom contact organic thin-film transistor (OTFT). The OTFT sensor not only presented a remarkable response characteristic in the absence and the presence of HC…
The mechanical environment has an important influence on biological behavior of the human musculoskeletal system. Either in vivo or in vitro culture, the growth and development of the musculoskeletal tissue depend on the mechanical environment. Now we propose a new loading device which uses a voice coil motor as drivi…
We compared the performances of polymer-based photovoltaic devices prepared from different formulations of poly(3,4-ethylenedioxythiophene):poly(4-styrenesulfonate) (PEDOT:PSS). The PEDOT:PSS buffer layer is incorporated between the indium tin oxide (ITO) electrode and the active layer, which is composed of a blend of…
A proof of concept for a material combining thermal conductivity, high stiffness, and high electromagnetic absorption over a wide range of frequencies is presented. A metallic honeycomb acting like a waveguide is filled with a lossy conductive nanocomposite medium. In order to absorb below the cutoff while preserving…
With the two solvothermal and hydrothermal method, synthetize the bismuth phosphate catalyst with controllable morphology. And study the photocatalytic activity which use methylene blue and methylene orange as probe. By using X ray powder diffraction(XRD) and the scanning electron microscope(SEM) the products were cha…
High-power light emitting diode (LED) develops greatly owing to its high energy efficiency, high color rendering and long life. However, it is important to design a secondary optical lens for the LED lamps to obtain a good output efficiency and light distribution pattern. The purpose of the secondary optical design fo…
The fabrication process and fracture characterization of 35 and 65 vol% SiCp particulate-reinforced Al matrix (SiCp/Al) composites have been investigated. SiCp composites having different volume fractions of the n-SiCp were synthesized via by pressureless-infiltration at near-net-shape route and were uniaxially tested…
Composite microspheres of polystyrene and nanoFe3O4 particles were prepared through emulsifier-free polymerization with ultrasonic dispersion. The properties of composite microsphere were investigated by FT-IR spectrum, X-ray diffraction analysis, TEM, SEM and VSM. The determine results showed that Fe3O4particles prep…