Materials Literature
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We study optical properties of synthesized liquid crystalline polymers containing azobenzene dye moieties. The grating recording by two linear polarized beams is investigated at wavelength 441 and 532 nm. Holographic grating recording in such system show capability of a dynamic media.
A simple and cost effective method was reported for the synthesis of β-SiC nanoparticles with differernt morphologies using Taixi coal as carbon source and Fe (NO3)3·9H2O, Co (NO3)2·6H2O and NiCO3·2Ni (OH)2·4H2O as additives, respectively. The structures and morphologies were characterized by XRD, FTIR, BET and SEM. T…
In the present study, corrosion and cathodic protection (CP) characteristics of concrete piles exposed to marine environments such as marine bridge columns or pier structures were evaluated under simulated conditions. The accelerated environmental tests were carried out at an elevated temperature (40°C) and a high chl…
Electrospinning technique is currently one of the most important methods for preparing nanofiber. According to the fact that the electric field at the receiver is relatively weak, the electric fields distribution in the typical electrospinning device was calculated and analyzed by ANSYS. It put forward the method of o…
In conventional angle-multiplexed holographic data storage, data pages are recorded and are retrieved with stop–go rotation. In this paper, we propose an effective servo method based on the disturbance analysis of holographic disc drives. Our experimental results indicate that the eccentricity and deviation of the dis…
Aiming at the problem that the generation power of the vibration generator is small, which is based on current electromechanical energy transducer materials, the conventional circuit could not meet the power supply requirement of the load. First of all, the principle of vibration energy harvesting is analyzed. Further…
Propagation of terahertz surface plasmon polaritons along plane metal-dielectric interfaces and their jumps across air gaps have been studied using monochromatic radiation of Novosibirsk free electron laser.
The morphology and structure of nanocrystalline diamond films as well as the plasma chemistry were studied by altering the plasma impedance. These impedances related to electron density were altered via the matching system. Two films were grown by the microwave plasma under different values of the plasma impedance, re…
In this work, a series of novel bipolar copolymers containing 8-hydroxyquinoline aluminum (Alq3) and carbazole had been synthesized by copolymerization of a novel Alq3 complex monomer and N-vinylcarbazole (NVK), and characterized by Fourier transform infrared spectra (FTIR), gel permeation chromatography (GPC) and dif…
Liquid energetic materials were not tested through traditional test methods for thermal sensitivity. Accelerating Rate Calorimeter (ARC) was scientific to test thermal sensitivity of energetic materials. The decompositions of Hexogen (RDX), Octogen (HMX), 2,4,6-Trinitrotoluene (TNT), Nitromethane (NM), Iso-propyl Nitr…
The Flexible Intermediate Bulk Container (FIBC) is a flexible transportation packaging container that is weaved by polyolefin plastic ribbon-like filament, which is widely used in the storage and transportation of granular and powder materials. When the FIBC was affected by environment factors synthetically under usin…
A novel magnetic bearing system for gas turbine generators of next generation nuclear power plant is proposed. This system newly adopts saturated coils for generating main bias force and small size linear auxiliary coils for stabilizing the suspension. The saturated coils operate in the region of magnetic saturation i…
We reported that titania ceramic coating loaded with palladium catalyst worked as an optical hydrogen gas sensor at room temperature. The palladium metal of this sensor worked as a catalyst not only for room-temperature operation but also for high selectivity to hydrogen gas. Precise control of metal/ceramic interface…
Features of the preparation of magnetic semiconductor films with the composition Mg(Fe0.8Ga0.2)2O4−δ on a 200-nm-thick silicon substrate are presented. Both a pure substrate surface and one with protective TiO x layers with a crystallization temperature of 900–1000°C for 30 min were used. The effect of the protective…
The polysulfone membranes surface modification by the low temperature air plasma for the study. The PS membranes surface composition, filtration, antifouling characteristics with the modification was characterized by water contact angle, water fluxes, interception rate. Polysulfone membranes hydrophilic has been great…
Coir mat reinforced unsaturated polyester composites have been prepared and the impact toughness has been researched, and the impact toughness model has been established based on the coir weight percentage content, the change laws of each mechanical index have been detailed, thus the optimal solutions have been put fo…
We propose that the product of the density by the square of the rms velocity of strain waves, which exhibits the features typical of elastic moduli, be referred to as effective (or characteristic) elastic modulus. The ratio of the bulk compression modulus to the effective elastic modulus is a single-valued function of…
We investigated the structure transition and the electrocaloric effect in PbZr1-xTixO3 (PZT) with x=0.7, 0.8 and 0.9. The results show that 50 MV/m can make the structural transition be a continuous one. When x=0.7, 0.8 and 0.9 at the zero field, the first order structural transition occurs at T0=685, 687, and 698 K,…
In this paper, a technology of determining the melt viscosity of a polystyrene(PS)/supercritical CO2solution using a linear capillary tube die mounted on a foaming dynamic extruder is presented. CO2was injected into the dynamic extrusion barrel. Single-phase PS/CO2solutions were formed using a microcellular extrusion…
Traditionally, materials characterization instrumentation has focused mainly on particles. However, for a better fundamental understanding and various potential applications, it requires an increase in the ability of instrumentation to observe.Characterization and manipulation requires not only extreme sensitivity and…