Now showing items 1-7 of 7
Expanded use of a fast photography technique to characterize laser-induced plasma plumes
Expanded use of fast photography is proposed to characterize laser ablation plasma plumes by the analysis of a set of photographs by means of appropriate mathematical algorithms. The laser ablation plasma plumes studied ...
Raman spectroscopy applied to molecular transformation of photochromic polymers
Photochromic polymers are materials with high potential for applications in optical devices. In this work we analyzed the polymeric matrix effect in convertion and reconvertion efficiency of spiropyran trough Raman spectroscopy ...
Nonlinear Optical Response of byosintethized Gold Nanoparticles
In this work nonlinear index refraction of colloidal biosynthesized gold nanoparticles with latex of Jatropha curcas is investigated. Z-scan curves were obtained using a CW Argon ion laser, with an incident power of 20 mW ...
Nonlinear Optical Response of colloidal and films gold nanoparticles synthesized by Chitosan
In this work Z-scan curves were obtained for colloidal and film samples of gold nanoparticles synthesized with chitosan. Under similar conditions the film samples showed a bigger response than the colloids. The results ...
Trace Level Vanadium Determination Using Thermal Lens Spectrophotometry
(Mikrochim. Acta, 2013)
Changes of the diffraction efficiency due to emulsions thicknesses in holographic gratings
We analyze the behavior of the diffraction efficiency as a function of the thickness of the relief holographic grating recorded on a phase emulsion composed by rosin and bromophenol blue (BPB) dye. The emulsions thicknesses ...
Robust discrete control of nonlinear processes: Application to chemical reactors
We report a photosensitive emulsion by mixing ammonium dichromate with rosin resin diluted in isopropyl alcohol. This material can be easily elaborated. A phase grating in this material was recorded using an argon-ion laser ...