Structural and Electrical Studies of Boric Acid Doped Cadmium Oxide Thin Film by JNSP Technique for Optoelectronic Applications

The present work deals with preparation and characterization of boric acid (b) dopped cdo thin films by the jet nebulizer spray pyrolysis technique at optimized temperature 450°C. Boric acid doped cdo thin films were prepared by jet nebulizer spray pyrolysis technique with different wt% of boric acid (x=0, 0.5,2.5, 4). The xrd pattern of various weight percentage boric acid dopped cdo thin films show the polycrystalline nature with cubic structure. At room temperature, the electrical conductivity of the prepared films increases with 4Wt% of 2.32x10-3 S/cm. The plot of voltage versus current as a function of temperature (RT-30°C) indicates the ohmic behavior of the films. Moreover, significant optoelectronic applications are cadmium oxide dopped with boric acid thin films at room temperature electrical resistivity is in the order of 101Ω cm which is low enough to be a good supercapacitor electrode material

Generalized Χ-dependent Hirota equation: singularity structure, Bäcklund transformation and soliton solutions

We point out how the singularity structure analysis of solutions of the generalized Χ-dependent Hirota equation systematically provides the integrability aspects of the equation. The Lax pair, Backlund transformation and soliton solutions are constructed from the analysis

Improved gas selectivity of polyetherimide membrane by the incorporation of PIM polyimide phase

The aim of this work was to prepare blend membranes of a polyetherimide (PEI) and different ratios of a microporous polyimide (PIM-B) in order to obtain an improved material for gas selectivity. Miscibility of the membranes was studied through fourier transform infrared spectroscopy (FTIR), Fluorescence, ultraviolet-visible spectroscopy (UV–vis), polarize light microscope images, X-ray diffraction (XRD), and differential scanning calorimetry analysis. Gas permeability assays were also performed. Results showed blends were partially miscible along the different ratios due to the existence of: (i) absorption shoulders at lower wavenumbers on the carbonyl stretching band; (ii) red-shifting of Fluorescence and UV–vis absorption bands; (iii) decreasing of d-spacing as the amount of PIM-B phase increased; and (iv) composition-dependent glass transition temperatures (Tgs). The mobility selectivity (Di/j) dominated H2 and O2 gas separations. High solubility coefficients (S) linked to PIM-B microporosity improved the ideal gas selectivity of the blend membranes. PEI/PIM-B membrane at the ratio of 80/20 showed impressive H2/CO2 (8.66) and O2/N2 (10.90) gas separation factors.Fil: Garcia, Maria Guadalupe. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - San Luis. Instituto de Física Aplicada ; ArgentinaFil: Marchese, Jose. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - San Luis. Instituto de Física Aplicada ; ArgentinaFil: Ochoa, Nelio Ariel. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - San Luis. Instituto de Física Aplicada ; Argentin