Materials Literature
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In order to obtain an important azobenzene liquid crystal intermediate with phenylacetylene group, Sonogashira coupling reaction was used to preparation the compound. In this paper, the intermediate was synthesized by (4-Iodo-phenyl)-(4-trifluoromethyl-phenyl)-diazene and trimethyl silyl acetylene (TMSA) as raw materi…
The Particulate Engineering Committee (PEC) of IOM3 held its long anticipated workshop on hot isostatic pressing (HIP) of materials for offshore (energy) applications on 16 April in Aberdeen, UK. Hosted by TWI and supported by EPMA, the one day meeting attracted about 30 delegates that filled comfortably the premises…
Core-shell nanoparticle has created great interest among researchers due to their various unique properties. The new properties created are combination of both the core and the shell. In this work, pre-prepared Nickel (Ni) nanoparticles were coated with Gold (Au) to produce core-shell structure. Formation mechanism of…
The addition of two compounds, calcium silicate and calcium zirconate was tested, in the preparation of Bi: 2212 silver sheathed wires by powder-in-tube method, which were successfully tested previously in processing chips. The wires were treated in an atmosphere of O2/Ar using partial melting method. The characteriza…
Based on a mixture of 2,4 and 2,6-tolylene diisocyanate of a grade Desmodur T-80 and polyesters P6-BA and PDA-800. Reactive isocyanate-containing prepolymers for polyurethane composite materials were synthesized. On the basis of alkanolamine Lapromol A-294, polyesters of various structures and an aromatic diamine Cura…
Temperature-concentration dependence of the electrical conductivity in glasses of the Zn(PO 3 ) 2 -NaF system was studied and compared with similar dependences for glasses of other systems. The extremal dependences log σ = f ([Na + ]) and {ie937-1} are interpreted from the standpoint of a macroscopically inhomogeneous…
Semiconductor wafer defect reviewSection:ChooseTop of pageSemiconductor wafer defec... <<Automated spectrometer ad...Interlayer detector for i...Wireless prototyping plat...Software update for USB t...Optical modeling softwareRaman, AFM, and SNOM imag...Data acquisition moduleRapid image visualization...Raman spectros…
Summarized the research and development of high speed machining of SiCp/Al composites. Emphasized the research status of high speed cutting of SiCp/Al composite materials, including machined surface quality and tool wear condition. Machined surface quality contains surface roughness and surface defects. The tool wear…
The air-conditioning/cotton blended fiber was pretreatment to investigate the effects of the sodium hydroxide, hydrogen peroxide, scouring agent, tea saponin, oil removing agent, the processing temperature and the processing time on the fabric. The values of capillary, strength, whiteness were got after single factor…
Expensive special equipments are often employed to evaluate the performance of low voltage battery, because of the loss voltage of test terminal and line. In the present paper, an economic method was proposed to evaluate fuel cell performance using the booster power supply and electronic load with remote sense. The te…
Le rayonnement synchrotron est un continuum d’énergie des infrarouges aux rayons X-durs. Avec l’amélioration des sources − une meilleure stabilité, une plus grande brillance, une plus faible divergence du faisceau et une meilleure cohérence − de plus en plus de lignes de lumière à travers le monde, et à SOLEIL en part…
The field emission properties of carbon based field emitters have been widely investigated in the past years. High emission currents up to 400mA can be achieved with a hybrid system of SWCNTs and graphene. However, we measure a deviation from Fowler-Nordheim-type field emission which is caused especially by space char…
Selective Catalytic Reduction system (SCR) has made great contributions to diesel engine NOx control technology. The gas flow condition in exhaust pipe has a great effect on catalytic reduction reaction of SCR, especially the airflow through carriers. In this paper, CFD technology was used to simulate the internal flo…
A single-negative electric waveguided metamaterial (WG-MTM) is proposed using folded complementary split single ring resonator (FCSSRR) to reduce mutual coupling in antenna arrays for MIMO applications. The WG-MTM is investigated numerically, which proved to exhibit electric resonance and band-gap property. Two antenn…
In this study, the optimum reaction conditions of preparing bridged monomer by dodecylamine (DDA) and of γ-(2,3-epoxypropyl) trimethoxysilane (GPMS) were obtained at 60°C water bath for 36h. The synthesized materials were characterized by infrared spectroscopy (IR), atomic force microscopy (AFM), Scanning Electron Mic…
Liquid Crystals have large electro-optic coefficients which make them suitable materials for a number of elements of 3D displays. This paper considers some of the issues relating to these elements, including the polarization modulation and phase modulation that can be obtained with liquid crystal elements as well as t…
In this paper, we studied the magnetic composite sheets for electromagnetic wave noise absorber of quasi-microwave band by using soft magnetic FeSiCr and Fe50Ni flakes with the thickness of about 1 μm and polymer. The magnetic hysteresis curve including saturation magnetization and residual magnetization and the compl…
La cohérence des nouvelles sources synchrotron nécessite l’utilisation d’optiques limitées par la diffraction à des longueurs d’ondes inférieures au nanomètre. La fabrication des surfaces optiques a énormément progressé ces dernières années grâce aux techniques de polissage déterministe. Des surfaces avec des défauts…
When the kinetic energy projectile into concrete target movement, angle of attack can affect the penetration process of ballistic performance, resulting deflection effect, thus affecting the penetration depth. For the analysis of kinetic energy projectile penetrating the lateral movement of the target deflection model…
Ionic Polymer-Metal Composite (IPMC) is a kind of smart material which can be used as sensors or actuators. As IPMC is very flexible and can produce larger electric signal when it is deformed, it is more suitable to be used as sensors to measure deformation, displacement and flow rate. However, hysteresis existing in…