Materials Literature
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High rates of degradation in corrosive media represent the Achilles heel of Mg alloys, which hinders their applications in various areas, particularly in prosthetics. We present an investigation of the degradation behavior of magnesium alloy AZ91D and AM50 in different solutions that simulates bodily fluids. The degra…
The 3D-microstructure in 9SMn28 free-cutting steel under water cooling condition was simulated based on the finite element–cellular automaton method with convection and porosity, and the simulated results are consistent with that of the experiment. The casting of 9SMn28 alloy is a stepwise solidification mode under wa…
Joining of titanium and its alloys with stainless steel by means of welding methods and obtaining joints characterised by good operation properties constitutes today a significant problem in relation to research and technology. Apart from specialised welding technologies, brazing is one of the basic methods applied fo…
Al-doped PbTiO3 solid solutions were synthesized by a solid state method. Since Al does not have bonding d-orbit or d-electrons, and the substitutions of Al(3+) for Ti(4+) in PbTiO3 is aliovalent, the effect of Al on the structure and spontaneous polarization is quite different from that of Hf, Zr, etc. substitutions…
In recent years, polymeric scaffolds have been used in several biomedical applications for the delivery of drugs or other biologically relevant molecules. Polymeric nanostructures possess different (and in some cases more powerful) properties respect to bulk materials. This, leaded academic researchers and industry to…
Electrochemical oxidation of [MIII(Pc)(CN)2]− (M = Co and Fe, Pc = phthalocyaninato) and peri-xanthenoxanthene (PXX) in acetonitrile yields partially oxidized salts of [PXX]2[M(Pc)(CN)2]·CH3CN. In the crystal, the Pc ring is formally oxidized by 0.5 e and forms a two-dimensional double-sheet layer. These crystals show…
Silicon membranes of 100nm thick (and below) over several mm2 have been fabricated for high efficiency extreme ultraviolet (EUV) transmission grating. The perfect planarity (<1nm) and the high transparency (>80%) at 13.5nm wavelength have been measured. In comparison to SiNx membranes (40% transmission),…
Indium-tin-oxide (ITO) thin films, typically produced by In2O3-10 mass%SnO2 target, are widely used for the elaboration of optoelectronics devices such as liquid crystal displays (LCD), flat panel displays (FPD), plasma displays, touch panels, etc., and they are required to satisfied specific optoelectronical properti…
Nano ZnO synthesized with and without surfactant adopting Solid State Reaction (SSR) method, the later at four different temperatures and by Aqueous Chemical Method (ACM) is reported. CdO synthesized by ACM is also presented. The ZnO nanorods by SSR with surfactant are of hexagonal shape with diameter between 20–30 nm…
Template synthesis is regarded as an effective pathway to replicate the unique structures and morphologies of natural substances with guest substrates to introduce designed functions into artificial materials, but it is generally limited to inorganic materials syntheses due to the severe calcination treatment to remov…
For a quantitative analysis of the detection performance of wavelength surface plasmon resonance sensor after the introduction of absorbing thin films, a mathematical model was established for the wavelength SPR biosensor. Based on absorption theory of dispersive media, the distribution of electromagnetic field in eac…
Diamond-like carbon (DLC) films were deposited on stainless steel (SUS), titanium (Ti) and nickel titanium (Ni-Ti) substrates using a radiofrequency plasma chemical vapour deposition method. Prior to DLC coating, the substrates were exposed to O2 and N2 plasma to enhance the adhesion strength of the DLC film to the su…
Multiferroic ceramics of Bi5Fe1-xCo x Ti3O15(x=0.0—0.6) are synthesized by the conventional solid state reaction, and their microstructure,magnetic and ferroelectric properties are investigated. X-ray diffraction patterns show that a four-layer Aurivillius phase is formed in each sample with a suggested structural tra…
In this paper, we propose a reliable algorithm to develop exact and approximate solutions for the problem of laminar viscous flow in a semi-porous channel in the presence of a transverse magnetic field. The differential transform method (DTM) is employed to compute an approximation to the solution of the system of non…
It has been shown experimentally that the ferroelectric nano-particles, in common with other molecular addi-tives, shift the clearing temperature, Tc, extending or reducing the two-phase coexistent region and changing the average order parameter of the single-component nematics. An increase of up to 11C or a smaller d…
Multiwall carbon nanotubes (MWNTs) have been added to the polymer poly (9,9-dioctylfluorenyl-2, 7-diyl) end capped with dimethylphenyl (PFO) in various weight percentages and the blends thus prepared, using a solution processing approach, have been characterized using SEM, UV-VIS spectroscopy, PL spectroscopy and I-V…
A high-concentration with low viscosity ceramic silicon carbide (SiC) slurry prepared for ICP-OES determination of ultra-trace impurities is described in this paper. Good fluidity can be kept up to the slurry concentration as high as 30% (m v−1) by adding 2% polyethylene imine (PEI) as a dispersant at pH 4.0. Stabilit…
Solvent-dispersible carbon nanotubes/nanoplatinum hybrid structures are presented, which show excellent catalytic activity under both heterogeneous and homogeneous conditions.
A method for direct silica-coating of fluorescent semiconductor nanoparticles is proposed. The fluorescent semiconductor nanoparticles used are quantum dots (Q-dots), which are CdSexTe1−x nanoparticles coated with ZnS and succeedingly surface-modified with amino groups. The silica-coating was performed in the presence…
Raman spectroscopy is a useful and non-destructive tool for the structural characterization of diamond-like carbon (DLC) films. Even though Raman spectroscopy is not a quantitative technique, the area integral intensity ratio of D and G peaks (I D /I G ) derived by the fitting of separate Gaussian curves usually serve…