Optical Properties and Band Gap of Ternary PSN-PMN-PT Single Crystals

This study investigated the optical properties and the interband transition of a ternary [100]-oriented 6PSN-61PMN-33PT relaxor ferroelectric single crystal. Compared with the binary [100]-oriented PMN-32PT crystal, the [100]-oriented 6PSN-61PMN-33PT crystal exhibited excellent optical properties, including high transmittance, low refractive index, weak frequency dispersion, and low reflection and absorption coefficients. All these differences can be attributed to the structural changes of the 6PSN-61PMN-33PT crystal, such as its large lattice size and increased band gap. The crystal’s transmittance was significantly improved after alternating current electric field poling due to the increased domain size and the order domain structure. The largest transmittance for the 6PSN-61PMN-33PT crystal was up to 66%. Our experimental results indicate that the ternary 6PSN-61PMN-33PT ferroelectric single crystal has great application potential in the optical field.

Annealing Effects on the Interband Transition and Optical Constants of Ruthenium (IV) Oxide (RuO2) and Ruthenium (VIII) Oxide (RuO4) Nano Thin Films in Cancer Cells, Tissues and Tumors under Synchrotron and Synchrocyclotron Radiations

In the current research, annealing effects on the interband transition and optical constants of Ruthenium (IV) Oxide (RuO?) and Ruthenium (VIII) Oxide (RuO4) nano thin films in cancer cells, tissues and tumors under synchrotron and synchrocyclotron radiations is investigated. The calculation of thickness and optical constants of Ruthenium (IV) Oxide (RuO2) and Ruthenium (VIII) Oxide (RuO4) annealing effects on the interband transition and optical constants of Ruthenium (IV) Oxide (RuO2) and Ruthenium (VIII) Oxide (RuO4) nano thin films in cancer cells, tissues and tumors under synchrotron and synchrocyclotron radiations produced using sol-gel method over glassy medium through a single reflection spectrum is presented. To obtain an appropriate fit for reflection spectrum, the classic Drude-Lorentz model for parametric di-electric function is used. The best fitting parameters are determined to simulate the reflection spectrum using Lovenberg-Marquardt optimization method. The simulated reflectivity from the derived optical constants and thickness are in good agreement with experimental results. Keywords: Annealing, Interband Transition; Optical Constants; Ruthenium (IV) Oxide (RuO2) and Ruthenium (VIII) Oxide (RuO4); Nano Thin Films; Cancer Cells; Tissues and Tumors; Synchrotron and Synchrocyclotron Radiations