Materials Literature
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The Effects of external resistance on electrical properties such as current density, power density and coulombic efficiency were investigated in two-chamber type MFCs using a ferricyanide as reducing agent.A stable electricity was produced when a constant time elapsed after innoculation of mixed cultures into the anod…
The green and hard machining characteristics of dental ceramics are of great interest to dental industry.The green bodies of TZP/ Al 2 O 3 composites were prepared by the cold isostatic pressing, and machined on the CNC lathe using PCD (polycrystalline diamond) insert under various machining conditions.With increasing…
Getters are most commonly inorganic materials that selectively adsorb radionuclide and metallic contaminants. Typically, these materials have been deployed in two different modes to immobilize and retard contaminant release from monolithic waste forms. One mode is to first use getters to selectively scavenge the radio…
In this paper, high surface area nanocrystalline gamma alumina was synthesized by the sol-gel method using cationic surfactant. The Pt-based dehydrogenation catalysts consisting of promoters and support modifiers (Sn, In, Li and Fe) were prepared using the synthesized gamma alumina and employed in the dehydrogenation…
Abstract In the present work, we revisit the effect of macromolecular crowding on the sizes of flexible neutral polymer chains. Motivated by recent experimental measurements on crowding effects on neutral flexible polymers chains, we perform Monte Carlo simulations on a model system consisting of hard spheres (HS) and…
This paper presents design procedures of a transverse flux linear motor (TFLM). The minimum and maximum flux linkage was determined by the simplified equivalent magnetic circuit and estimated average magnetic flux density at the air gap region by considering the shape of applied magnetomotive force (MMF). With this in…
Electro-optical properties of deformed helix ferroelectric liquid crystal (DHFLC) cells are studied by using a general theoretical approach to polarization gratings in which the transmission and reflection matrices of diffraction orders are explicitly related to the evolution operator of equations for the Floquet harm…
A series of hysteresis loops with off-axial external magnetic fields have been measured to identify magnetization reversal properties as well as coupling effects in magnetic tunnel junctions (MTJs). MTJ films, consisting of a synthetic artificial antiferromagnetic pinned layer of CoFeB/Ru/CoFe/IrMn, were patterned int…
We have characterized liquid crystal (LC) materials and electrooptical modes, as well as new LC configurations suitable for fiber optical applications. New LC based tunable photonic devices were also proposed. The basic achievements were made using the photoaligning and photopatterning technology. Full text: PDF Refer…
Based on first-principle calculation, the geometry and electronic transport properties of the boron and nitrogen co-doping single-walled carbon nanotubes are investigated by using density functional theory combined with non-equilibrium Green's functions. The results show that the BN atoms energetically tend to form co…
Nonlinear optical properties of gold aqueous colloid obtained with chemical reaction method are investigated using Z-scan technique with 38 ps pulses. Experimental results indicate that the colloid exhibits large nonlinear refraction and nonlinear absorption under the excitation of ps 532 nm pulses, while it presents…
The use of dendrimers as soluble supports of catalytic entities offers efficient tools for “greener” catalysis. Indeed, thanks to their large size, dendrimers can be recovered and reused; depending on their structure, they can be tolerant to aqueous media or even soluble in water; and they can be used as ligands of ch…
Abstract Review: 32 refs.
In the current work the glow curves for LiF:Mg,Cu,Na,Si thermoluminescent material were measured and analyzed by using a function approximating to the well-known Randall-Wilkins first-order expression. The influence of different heating rates on thermoluminescent glow-peak maximum temperature, peak height and integrat…
Abstract Na21 [Na3(H2O)8{Ni3(H2O) (PW9O34) (PW8O31)}2]·36H2O is synthesized from an aqueous solution of Na2WO4, Na2HPO4, NiCl2, HCl, and NaOH (pH 6—7, 80 °C, 2 h, 46% yield).
Sub-micrometer La 0.8 Ca 0.2 CrO 3 powders for ceramic interconnects of solid oxide fuel cells were synthesized by the aqueous combustion process.The materials were prepared from the precursor solutions with different glycine (fuel)-to-nitrate (oxidant) ratios (φ).Single-phase La 0.8 Ca 0.2 CrO 3 powders with a perovs…
We performed scanning tunneling microscope (STM) studies to observe the surface electronic structure of the following semiconducting charge-transfer complexes: dipropylamine-tetracyanoquinodimethane [DPA(TCNQ)${}_{2}$], triethylammonium [TEA (TCNQ)${}_{2}$], and $N$-ethylmorpholinium [HEM(TCNQ)${}_{2}$], which all pos…
Abstract Summary: This paper deals with the design and control of the morphology of core‐shell nanoparticles elaborated by fed‐batch emulsion copolymerization of styrene and butyl‐acrylate in the presence of a chain transfer agent (n‐dodecyl mercaptan). A mathematical model was elaborated and validated. It consists of…
In this study, the glass fiber drawing from a silica preform in the furnace for the optical fiber manufacturing process is numerically simulated by considering the radiative heating of cylindrically shaped preform. The one-dimensional governing equations of the mass, momentum, and energy conservation for the heated an…
The pyroelectric and phase transition properties of a finite alternating ferroelectric superlattice with three surface layers are studied on the basis of the transverse Ising model by using the mean field approximation. The temperature-dependence of the polarization and pyroelectric coefficient of the superlattice wit…