Materials Literature
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Nanocomposites of poly(ε-caprolactone) (PCL) and layered double hydroxide (LDH) were prepared by in situ polymerization at low LDHs loadings in this work. The resultants were characterized by FTIR spectroscopy, X-ray diffraction (XRD), differential scanning calorimeter (DSC) and UV-visible spectroscopy (UV-vis). FTIR…
The conductivity and dispersing of carbon nanotube/mica composite powder in the epoxy resin are researched. The pictures of SEM and TEM indicated that the diameter, content of carbon nanotube, dispersing and the diluted solvent have important influence on the conductivity of resin. The carbon nanotube/mica composite p…
Lead-free (K0.5Na0.5)1-3xLaxNbO3(x = 0.0-0.005) thin films were synthesized by chemical solution deposition. The X-ray analysis showed that (K0.5Na0.5)NbO3(KNN) and La doped KNN single-phase thin films were obtained with a [100] preferred orientation. When doping with La, thin films exhibited a remarkably low leakage…
In this work, we report the dielectric properties and microstructure of the Mn doped CaCu3Ti4O12fibres, grown by the laser floating zone technique, using different pulling rates (Rp). The samples were studied by X-ray diffraction, scanning electronic microscopy, energy dispersive X-ray spectroscopy and AC impedance sp…
Dichroic frequency selective surface having stable filtering characteristics over a wide range of incidence angle is designed. The resonator layer is first represented by a homogeneous material slab using effective medium parameters. An optimal quarter-wave superstrate layer is subsequently applied. Angularly stable f…
An efficient flexible organic solar cell was presented. The highest power conversion efficiency (PCE) of 3.2% and 2.5% were achieved on glass substrate and flexible substrate individually. The device photovoltaic properties were discussed in terms of the band diagrams and series resistance of the devices. Also the pro…
Silicon platforms with high-number-density vertically aligned carbon nanotubes (VACNTs) on patterned substrates are designed and fabricated to provide efficient thermal conduction for hybrid optoelectronic integration and device packaging. The simulation shows that the platform can reduce the thermal resistance by >;4…
By using a sequential evaporation method, Cu(In,Ga)Se2 (CIGS) thin films with a high Ga/(Ga+In) mole ratio were fabricated on Mo/soda-lime glass substrates. The bandgap energy (E g) estimated by the photoreflectance (PR) and piezoelectric photothermal (PPT) methods shifted to the higher photon energy side with increas…
The characterizations of ferroïc materials are often realized by measuring the minor loops. The polarization P and/or the strain S are reported as a function of the ac electric field E and/or the ac mechanical stress σ. The slope of the loop depends on the real part of ε or d (respectively the dielectric constant and…
Extended abstract of a paper presented at Microscopy and Microanalysis 2012 in Phoenix, Arizona, USA, July 29 – August 2, 2012.
Plasma processes, particularly plasma etching and plasma deposition processes are crucial for a large variety of industrial manufacturing processes. For these processes the knowledge of the ion energy distribution function plays a key role. Measurements of the ion energy distribution function (IEDF) are at least chall…
SrFexCo0.5O3-δ (x=0.5, 0.75, 1.0, 1.25) powders have been synthesized by the solid state reaction process. The effect of Fe content on the microstructure and properties of the SrFexCo0.5O3-δ powders were investigated in detail by X-ray diffraction (XRD), scanning electron microscopy (SEM) and thermo-gravimetric analys…
The kinetics of semibatch polymerization (i.e. slow monomer addition) with ABg monomer and Bf core was developed. The analytical expressions of molecular parameters, such as the molecular size distribution function, the average degree of polymerization and polydispersity index, were derived, which dependent on the str…
Four vanadium phosphate catalysts were synthesized via vanadyl hydrogen phosphate sesquihydrate (VOHPO4•1.5H2O) route and activated at different duration (6, 18, 30 and 75 hours) in 1% oxygen/ nitrogen (1% O2/N2) mixture at 733K. The increased activation duration led to a decreased in the specific surface area of the…
The perpendicularly cut end of the carbonized mechanical pencil lead shows superior field emission (FE) features, that is, the lower threshold electric field, the extremely lower effective work function, and the quite higher maximum current density, even though the corner edge is rounded. In this paper, we have discus…
In this study, lead-free (Na0.465K0.465Bi0.07)(Nb0.93Ti0.07)O3-0.08MnO2 ceramics were fabricated by conventional mixed oxide method. Structural and electrical properties of lead-free (Na0.465K0.465Bi0.07)(Nb0.93Ti0.07)O3-0.08MnO2 ceramics with the variation of sintering temperature were investigated. As results of x-r…
The formaldehyde emission test of MDF decorated with a paper sheet impregnated thermosetting resin was done under the simulated indoor conditions. The results showed that formaldehyde emission decreases after being placed under the condition of high temperature and relative humidity. In addition, the formaldehyde emis…
In the framework of assistance for Japan, the ACTIFLORAD project for liquid waste decontamination mobilized over 200 AREVA collaborators and 47 people who led their mission in the damaged site. Led between May 18th and July 6th, 2011, the French mission aimed at supervising the ACTIFLORAD process building and assistin…
InP/ZnSe/ZnS muitishell colloidal quantum dots (QDs) with high quantum yield were prepared by convenient heating-up method for a light emission layer of transparent QD light-emitting diodes (QD-LEDs). The synthesized InP/ZnSe/ZnS multishell QDs exhibited an emission peak at 545 nm for clear green color with a full-wid…
According to the working condition of the wear-resistant and heat-resistant parts, it designed the composition of the wear-resistant and heat-resistant steel. Different amount of Ti were added to wear-resistant and heat-resistant steel. The effects of Ti on microstructure, hardness and wear resistance of wear-resistan…