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Article
Modification of the phase transition temperatures in titania doped with various cations
Titania matrices prepared by a sol-gel technique were doped with several cations (La, Zn, Al, K, Na, Ca, Ba, and Co). The effect of the dopants on the thermal and structural properties of the materials is anal...
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Article
Effects of cationic dopants on the phase transition temperature of titania prepared by the sol-gel method
The effect of different cations in the anatase–rutile phase transition temperatures for titania prepared by the sol-gel method was studied. The metal dopants were chosen from different periods and groups of th...
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Article
Crystalline Structure Determination of Anisotropic Dimethyl Terephthalate Crystallites by Micro-Raman Spectroscopy
A novel approach to determine the molecular orientation of dimethyl terephthalate molecules with respect to the direction of the crystal axis is reported. This determination was achieved by changing the crysta...
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Article
Fractal Characterization of Silica Sol Prepared by the Sol-Gel Method: From the Sol Formation to the Flocculation Process
The fractal characterization of silica particles prepared by the sol-gel method was obtained; from the beginning of the sol-gel synthesis to the aggregation process of these particles by adding metal ions in s...
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Article
Photo-quenched luminescence in Co(II)-doped sol–gel zirconia
The quenching process of the laser-induced luminescence of Co(II)-doped zirconia samples prepared by the sol–gel method is reported. Zirconia monoliths doped with Co(II) at different concentrations, were laser...
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Article
Hap-based porous material with potential application as bio-packages for MEMS
Novel hydroxyapatite-based hybrid materials with controlled porosity and good adhesion to silicon surfaces were designed as bio-package for MEMS with potential application for implants in the human body. These...
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Article
Nonlocal Effects in the Confocal μ-Raman Characterization of Inhomogeneous Polymer Coatings
The confocal μ-Raman technique was used to characterize the morphology of inhomogeneous anti-graffiti coatings; for these systems, the antiadherent molecules were segregated to the external (exposed) surface f...