Materials Literature
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The dynamic behavior of the railgun housing including the rails is of great importance for the system performance. The transient loading (magnetic pressure) may have a negative influence on the sliding electrical contact required for this acceleration technology. Therefore, the analysis of the displacement of the inne…
use the sol-thermal method to synthesis nanoparticle TiO2 which is well developed, small diameter and good dispersion. XRD and BET methods were used to analyze the crystal structure and specific surface area. Under nature solar light, the photodegradation activity of TiO2is tested. The results show that the TiO2sample…
The mechanical properties (fracture strength and Vickers microhardness HV) of corundum-based composite materials containing disperse Ni and NiAl particles are studied. The material samples are prepared by sintering in vacuum at 1500°C or through hot compaction at a temperature ranging from 1470 to 1570°C. The fracture…
With the technology improvement of computer communication and multimedia coding, real time communication such as audio and video is introduced to networks and become a dominant way of communication.In the control of network, the optimization problem of the network controller based on network Quality of service (QoS) i…
Transmission spectrum and reflectance spectrum have long been used to characterize gap semiconductor. Transmission spectrum can be measured very directly, but the influence of substrate absorption is often unavoidable. However, when using the reflectance spectrum measurement, the absorption of thin film, substrate abs…
Novel thermoresponsive dendronized monomer bearing azobenzene moiety, 4-(4′-(3, 4, 5-tris (2-(2-methoxyethoxy) ethoxy) benzyloxy) phenylazo) benzyl methacrylate, has been successfully synthesized. The chemical structures of intermediate compounds and dendronized monomer were confirmed by FTIR and 1H NMR. The phase tra…
The powder preparation, material properties, the cutting characteristics and parameter selection for a nickel base superalloy FGH97 are summarized in this paper. It introduces the influence of various elements on the properties of the alloy, the ideal tool materials is coated cemented carbide tool and PCBN ceramic cut…
The development of vacancy clusters in α-Fe is essential for understanding the formation of irradiation damage. In this work, the structures and the development of vacancy clusters in α-Fe have been studied by atomistic computer simulation. It was found out that larger clusters can form by combinations of smaller clus…
The application of ultrasonic cleaning for submerged structure is more common, but the resonant frequency of piezoelectric transducer is changed when it is heat at work. The traditional matching method cannot adapt the serial resonance frequency of capacitance branch and dynamic tuning is inefficient. We proposed a tr…
In this paper, we study the dynamic properties of a linear array of graphane triangular molecules that transmit a binary signal. The electronic properties of nanoclusters are studied using calculations based on first principles, with hybrid potentials. The dynamic of the system is studied by solving the time-dependent…
Inductance gradient is one of the important parameters on the design and evaluation of railgun performance. It influences the muzzle velocity and the system efficiency of a railgun, which is determined by gemometry, dimensions, materials and so on. Considering the eddy current loss, the 3D finite element method was us…
The finite-difference time-domain (FDTD) method is a simple, robust tool for a variety of electromagnetic modeling scenarios. In order to model magnetic ferrite materials, the FDTD method is coupled with the Landau-Lifshitz-Gilbert (LLG) equation. The LLG equation is discretized by defining a magnetization vector at t…
Tau immunotherapy has great potential for Alzheimer's disease and other tauopathies but the mechanisms of tau clearance are not well known. We recently reported on two novel tau antibodies targeting the 396/404 region, 4E6G7 and 6B2G12, which are primarily taken up by neurons and reduce tau protein pathology in long t…
It has been shown that the basic conditions for implementing the mechanochemical synthesis in the titanium-carbon system are the structure and degree of aromaticity of the carbon modifications. It has been revealed that the carbon black-graphite composite is promising for the mechanochemical synthesis of titanium carb…
The effects of hot extrusion on microstructural evolution in spray formed GH738 were investigated using X-ray diffraction, scanning electron microscopy and electron backscatter diffraction. After hot extrusion, the refined and uniform microstructures showed entirely dynamic recrystallisation (DRX) characteristics that…
The prospects of three newly developed platforms for broadband mid-infrared integrated silicon photonics (namely, silicon-on-nitride, the all-silicon optical platform and silicon-on-lithium niobate) enabled by the process of wafer fusion are investigated.
The electrical stability of flexible a-Si:H thin-film transistors (TFT) under mechanical bending is given. The electrical stability was found to be dependent on the strain state of the applied bending during dc-gate bias of the TFT. The heterogeneous integration of hybrid thin-film/nanowire structures on polyeth ylene…
One of the technological challenges of direct observation of extra-solar planets remains to develop a modal filter operating from 6 to 20 μm. In the present paper we present one of the two candidate technologies for the fabrication of such modal filters, together with Fiber Optics: Integrated Optics. The solution base…
the hot extruded AZ31 magnesium alloy which has basal texture was impacted along different direction and different fracture mode appeared. Under different impacted direction, the basal slip, prismatic slip, pyramidal slip, compression twin and tension twin have different critical resolved shearing stress (CRSS) and Sc…
The effect of Nb content on the lattice parameters and relative stability of α, β and ω phases in Ti1–xNbx (0