Materials Literature
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The present study discusses the photosensitivity of GeS2 chalcogenide glass in response to irradiation with femtosecond pulses at 1047 nm. Bulk GeS2 glasses are prepared by conventional melt quenching technique and the amorphous nature of the glass is confirmed using X-ray diffraction. Ultrafast laser inscription tech…
This paper reports the development of unidirectional natural fiber-reinforced thermoset composites and their mechanical properties. A thermoset epoxy resin was used as the matrix polymer, with abaca fiber as the reinforcing phase. The tensile strength and Young’s modulus of the proposed thermoset composites respective…
Crystal, electrical and electronic structure properties of the Erbium doped TiBO3 samples were investigated by X-ray Spectroscopic techniques. The experimental data were collected for the samples with different Er substitution ratios. To obtain better tools for analysis, XRD pattern results were supported by the colle…
Neutron powder diffraction experiments were performed on the intermediate-valence ${\mathrm{Ce}}_{2}\phantom{\rule{0.16em}{0ex}}{\mathrm{RuZn}}_{4}$ intermetallic compound and combined with magnetic bulk measurements including high magnetic field experiments up to 58 T. Previous theoretical studies suggest that only o…
Abstract We have shown that the electronic structure of graphene oxide is strongly, but reversibly, affected by temperature. Below 160 K, graphene oxide is much more completely oxidized, removing any last remaining ?-conjugated network. Through DFT simulations, we have shown that this is due to buckling-induced oxidat…
Mie theory and genetic algorithms are used to determine the parameters and performance of cloaks made of homogeneous isotropic metamaterials that would hide a spherical dielectric object of size comparable to the incident radiation wavelength. A single-layer (SL) cover with negative permittivity and permeability can p…
En el presente trabajo se llevo a cabo la digestion anaerobia de residuos organicos para la produccion de biogas en tres reactores de vidrio con volumen de 4,2 l y volumen de operacion de 2,0 l. La digestion se llevo a cabo sin agitacion y a temperatura ambiente de la ciudad de Mexico. Dos digestores (D 1 y D 2 ) fuer…
Minimally processed bell pepper strips stored at 8-100C for seven days were evaluated for variation in color, in package gases, firmness, physicochemical sensory and microbiological quality. Bell pepper strips were treated with sodium chloride, calcium chloride, sodium chloride+calcium chloride or distilled water (con…
Fixed abrasive chemical mechanical polishing has some advantages in generating planarity surfaces of optical components. The surface after polishing has better uniformity, and the material removal rate is much more than the traditional chemical mechanical polishing. The pad wear shape has a significant effect on the u…
Highly ordered TiO2 nanotube arrays were successfully fabricated using ammonium fluoride electrolyte by galvanostatic anodization technique. The nanotube arrays were grown perpendicular to the titanium film deposited onto conducting glass substrate. The effect of the different titanium film thicknesses on the morpholo…
A multiscale modeling approach was utilized to predict thickness reduction in steel plate heat exchangers (PHEs) utilized in combi boilers. The roles of texture and microstructure were successfully accounted for by properly coupling crystal plasticity and finite element analysis (FEA). In particular, crystal plasticit…
The luminescence of new Eu 3+ -activated Sr 4 Ge 2 O 7 F 2 phosphor is reported. The pronounced broadening of linewidth in this host lattice indicates that the Eu 3+ ions are distributed in four different Sr 2+ sites. Sr 4 Ge 2 O 7 F 2 :Eu 3+ shows weak concentration quenching. Sr 4 Ge 2 O 7 F 2 :Eu 3+ exhibits a good…
We present experimental results demonstrating the spatial sorting of incoming radiation in two spectral ranges. A metasurface composed of a periodically patterned metal of subwavelength thickness with dielectric inclusions concentrates and localizes electromagnetic fields near the surface. Light of the separate spectr…
Purpose: To evaluate the cytotoxic effect of pegylated liposomal Recombinant Human Erythropoietinalfa (rHuEPO) nanoparticles synthesized by reverse phase evaporation technique on SH-SY5Y cell line.Methods: To prepare the nanoparticles of the drug, rHuEPO, PEG3000, cholesterol andphosphatidylcholine were dissolved in b…
The thermal resistance of a crystal lattice with a monatomic unit cell due to three-phonon scattering processes is investigated in detail theoretically. A general expression for the lattice thermal conductivity is derived from a combined analysis based on: (i) the Boltzmann equation and (ii) data on the heat current a…
Innovative front end processing for next generation CIS module production, Probst, Volker, Jasenek, Axel, Sandfort, Christian, Letsch, Andreas, Koetschau, Immo, Hahn, Thomas, Feichtinger, Jochen, Eschrich, Heinz
A Hg(Cd)Te insulator heterostructure hosts a two-dimensional electron system that can simulate the physics of Dirac fermions with only a single valley. We investigate the magnetotransport properties of this structure and show that, unlike most two-dimensional crystals with spin and valley coupled levels, the Shubnikov…
Model alloys Fe-20Cr and Fe-20Cr-20Ni (wt.%) and these alloys doped with 0.5% Si or 2% Mn were exposed to Ar-20%CO2-20%H2O-(0%, 0.1%, 0.5%, 1.0%)SO2 gas mixtures at 650 °C. Alloys of Fe-20Cr-(2Mn) and Fe-20Cr-20Ni-(0.5Si) underwent breakaway oxidation in sulphur-free gases, forming thick iron-rich oxide scales and int…
Abstract We introduced a coating layer of Mg-Al-based layered double hydroxides (Mg-Al LDHs) on zinc oxide composite electrodes, and investigated its effects on the charge–discharge performance as a zinc negative electrode in alkaline solutions. The coating layer with Mg-Al LDHs successfully improved the discharge cap…
The addition of steam to carbon containing fuels is a common method for minimizing carbon accumulation on anodes in solid oxide fuel cells (SOFCs). Experiments presented in this work utilize in situ Raman spectroscopy coupled with voltammetry measurements to examine the extent of carbon accumulation on Ni-based anodes…