80 research outputs found
High Stability Performance of Superhydrophobic Modified Fluorinated Graphene Films on Copper Alloy Substrates
A stable self-cleaning superhydrophobic modified fluorinated graphene surface with micro/nanostructure was successfully fabricated on copper substrates via drop coating process. Irregularly stacked island-like multilayered fluorinated graphene nanoflakes comprised the microstructure. The fabricated films exhibited outstanding superhydrophobic property with a water contact angle 167° and water sliding angle lower than 4°. The developed superhydrophobic surface showed excellent corrosion resistance with insignificant decrease of water contact angle 166° in 3.5 wt.% NaCl solution. This stable highly hydrophobic performance of the fluorinated graphene films could be useful in self-cleaning, antifogging, corrosion resistive coatings and microfluidic devices
Enhanced thermal stability and optical and structural properties of Tm+3 ions in doped tellurite glasses for photonic use
Detailed study about the thermal behavior and kinetics characterization of an oxyfluoride tellurite glass
Investigation of Structural, Physical, and Attenuation Parameters of Glass: TeO<sub>2</sub>-Bi<sub>2</sub>O<sub>3</sub>-B<sub>2</sub>O<sub>3</sub>-TiO<sub>2</sub>-RE<sub>2</sub>O<sub>3</sub> (RE: La, Ce, Sm, Er, and Yb), and Applications Thereof
A novel series of glass, consisting of B2O3, Bi2O3, TeO2, and TiO2 (BBTT) containing rare earth oxide RE2O3, where RE is La, Ce, Sm, Er, and Yb, was prepared. We investigated the structural, optical, and gamma attenuation properties of the resultant glass. The optical energy bands, the linear refractive indices, the molar refractions, the metallization criteria, and the optical basicity were all determined for the prepared glass. Furthermore, physical parameters such as the density, the molar volume, the oxygen molar volume, and the oxygen packing density of the prepared glass, were computed. Both the values of density and optical energy of the prepared glass increased in the order of La2O3, Ce2O3, Sm2O3, Er2O3, and then Yb2O3. In addition, the glass doped with Yb2O3 had the lowest refractive index, electronic polarizability, and optical basicity values compared with the other prepared glass. The structures of the prepared glass were investigated by the deconvolution of infrared spectroscopy, which determined that TeO4, TeO3, BO4, BO3, BiO6, and TiO4 units had formed. Furthermore, the structural changes in glass are related to the ratio of the intensity of TeO4/TeO3, depending on the type of rare earth. It is also clarified that the resultant glass samples are good attenuators against low-energy radiation, especially those that modified by Yb2O3, which exhibited superior shielding efficiency at energies of 622, 1170, and 1330 keV. The optical and gamma ray spectroscopy results of the prepared glass show that it is a good candidate for nonlinear optical fibers, laser solid material, and optical shielding protection
Wear and heat shock resistance of Ni-WC coating on mould copper plate fabricated by laser
Photoluminescence properties of tellurite glasses doped Dy3+ and Eu3+ for the UV and blue converted WLEDs
Luminescence and physical properties of Ce3+-doped potassium gadolinium phosphate glasses for radiation detector application
Mechanical, optical, and beta/gamma shielding properties of alkali tellurite glasses: Role of ZnO
Effect of Na2O/PbO substitution on physical and optical properties of Er3+-doped tellurite glasses
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