Implementing and testing a Kinetic Phase Transition Model.
Abstract not provided.
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Synthesis of Nanosized SnS-TiO2 Photocatalysts with Excellent Degradation Effect of TBA under Visible Light Irradiation
SnS-TiO 2 nanocomposites are synthesized using simple, cheap, and less toxic SnCl 2 as the tin (II) precursor. The prepared nanoparticles are characterized using powder X-ray diffraction (XRD), transmission electron microscopy (TEM), and UV-Vis diffuse reflectance spectra (DRS). The XRD and TEM results indicate that t…
Spectral characteristics of tunable IR liquid-crystal filters based on the Christiansen effect
This paper discusses electrically controllable IR dispersion filters based on a small-particles–liquid-crystal system. A calculational technique is presented, and the connection of the structural parameters of the filters and their spectral characteristics is analyzed, using as an example a system composed of aluminum…
Use of mathematical algorithms to evaluate the influence of physicochemical parameters affecting the adsorption of aromatic compounds on activated carbon
ResumenEl objetivo principal fue encontrar cómo ciertos parámetros o factores fisicoquímicos del carbón activado pueden influir en la capacidad de adsorción de tres adsorbatos: fenol, ácido benzoico y ácido salicílico.Se emplearon dos métodos de análisis multivariado de datos: análisis principal de mínimos cuadrados (…
Synthesis and characterization of MoS2 nanostructures using pulsed-laser deposition system
Nanostructures, with one or more dimensions in the lOOnm size range, exhibit a variety of unique and tunable chemical and physical properties when engineered appropriately. The high degree of variability in size and surface chemistry of nano-scale materials in coatings, crystal structure, shape and composition used in…
Crystal structure of diaqua-dinitrato-κ1O-bis(2-(pyridin-4-ylthio)- pyrazine-κ1N)cadmium(II), C18H18CdN8O8S2
Abstract C18H18CdN8O8S2, monoclinic, P21/c (no. 14), a = 12.9345(5) Å, b = 12.9120(5) Å, c = 7.2991(3) Å, β = 91.085(2)°, V = 1218.8 Å3, Z = 2, Rgt(F) = 0.0401, wRref(F2) = 0.0939, T = 296 K.
Total Ionizing Dose Effects in Carbon Nanotube Network Transistors
Total ionizing dose effects on carbon nanotube network transistors were experimentally evaluated using 60Co gamma-ray irradiation up to 50 kGy(Si). The electrical characteristic of the devices after irradiation are reported for future space applications.
Energy harvesting through lumped elements located on metamaterial absorber particles
We propose and examine an enhanced version of a multi-band metamaterial absorber for an energy harvesting application. The numerical results of the multi-band absorption characteristics of no-load conditions are presented and compared with the loading conditions. At most %50 of the incoming wave energy whose correspon…
Indium–tin oxide films obtained by extraction pyrolysis
Thin indium-tin oxide (ITO) films were obtained by pyrolysis of solutions of indium and tin extracts on glass substrates. The extraction pyrolysis (EP) technology uses inexpensive starting compounds and provides the required stoichiometric ratio of elements due to complete mixing of precursors in the organic solution.…
Estudo da Técnica Tig Keyhole por Meio do Análise Comparativo entre Duas Tochas de Alta Produtividade na União de Chapas de Aço Carbono de Meia Espessura
Resumo Na bibliografia de referência comum, a soldagem por meio da técnica Keyhole sempre foi associada a processos de soldagem com uma alta concentração de energia, como o processo Laser ou o processo Plasma. Novos avanços em tochas TIG estão mudando a forma em como o processo de soldagem TIG deveria ser considerado.…
Dynamical behaviour of a far-field radiative thermal transistor
Heat flux management have never been efficiently realized by the use of components that can guide, amplify or modulate radiative thermal transfer. In order to pave the way to thermal logical circuits and heat management, we study the dynamical behaviour of such theoretically conceptualized components. Using recent pro…
Effect of PEDOT:PSS/metal electrodes on the performance of heterojunction solar cells
The properties of photovoltaic donor/acceptor blend organic solar cells are highly influenced by several parameters, such as the thickness of the active layers, the morphology of the film due to the solvent, the mobility of the free charge carriers and the electrodes used. In this work, the open-circuit voltage (Voc)…
Extracting Metals with Carbon Nanotubes: Environmental Possibilities
This paper presents a review of the environmental possibilities of using carbon nanotubes (CNTs) for extracting metals, taken into account the characteristics of carbon nanotubes to be used as adsorbents and the influence of different factors on the adsorption processes, among them: kind of carbon nanotubes used as ad…
Structural and Optical Properties of (CdO)1-x(SnO2)x Thin Films Prepared by Pulsed Laser Deposition
CdO thin films have been deposited at different concentration of SnO2 (x= (0.0, 0.05, 0.1, 0.15 and 0.2)) Wt. % onto glass substrates by pulsed laser deposition technique (PLD) using Nd-YAG laser with λ=1064nm, energy=600mJ and number of shots=500. X-ray diffraction (XRD) results reveal that the deposited (CdO)1-x(SnO…
Processing and Characterization of In-Situ Generated Nanosilver and Er3+ Co-Doped Bromoborosilicate Glass Nanocomposites
In the present investigation, bromoborosilicate glass of composition 6Na2O-19K2O-10BaBr2- 2Al2O3-15B2O3-48SiO2 (mole %) added with 0.2 wt% SnO, co-doped with 0.001 wt% Ag and 0.7 wt% Er2O3 in excess amount, was prepared by melt-quench technique. The metal-glass nanocomposites were derived involving a single-step in-si…
Photocatalytic Degradation Of Organic Pollutant Reacting With Tungstates: Role Of Microstructure And Size Effect On Oxidation Kinetics
The aim of this study was to investigate the photocatalytic activity of polycrystalline phases of bismuth tungstate of formula Bi2WO6. Polycrystalline samples were elaborated using a coprecipitation technique followed by a calcination process at different temperatures (300, 400, 600 and 900°C). The obtained polycrysta…
Spectroscopic Investigations of (E)-5-(2-Phenyldiazenyl)-2-Hydroxybenzaldehyde Using DFT Method
The Spectral Characterization of (E)-5-(2-phenyldiazenyl)-2-hydroxy benzaldehyde (PDHB) were carried out by using FT-IR, FT-Raman and UV-Vis spectroscopic techniques. All the recorded spectral results were compared with calculated results. The optimization has been performed on the title compound using B3LYP/6-311++G(…
FEM simulations of metamaterial impact on the longitudinal beam-coupling impedance of a rectangular beam pipe
When a particle beam travels through an accelerator structure like the LHC, energy is lost to the structure itself. This phenomenon is described through the beam-coupling impedance and is ideally reduced to improve beam quality and energy efficiency. In this paper, the use of metamaterials with negative permeability i…
Merging metamaterials with quantum photonics
We have studied the effect of a high photonic density of states provided by a metamaterial environment on the dynamics of nanodiamond based nitrogen-vacancy (NV) centers. We have experimentally demonstrated the broadband enhancement of single-photon emission from nanodiamond NV centers coupled to a planar multilayer m…
Numerical studies on dual-band electromagnetic energy harvesting with double-ring split-ring resonators
Recently, split-ring resonators (SRRs) have been studied as the receiving element for electromagnetic energy harvesting, or RF energy harvesting, for its electrically small size and electric field concentration at resonance. However, traditional single-ring SRR studied in literature possesses intrinsic single bandwidt…