Fabrication and optical properties of garnet ceramics based on YScAlO doped with ytterbium and erbium.

Optical ceramics YSAG:Yb,Er with an average grain size of 6 ± 1 microns were fabricated by vacuum sintering of nanocrystalline powders of the compositions YYbErScAlO, YYbErScAlO and YYbErScAlO. The linear transmittance coefficients of the YSAG:Yb,Er ceramic samples exceed 80% in the visible and infrared regions. The refractive index of ceramics increased from 1.

Optimization of the Technique for Obtaining Selenium Nanoparticles Stabilized with Cocamidopropyl Betaine.

With the aim of optimizing the technique for the synthesis of selenium nanoparticles stabilized with cocamidopropyl betaine, a multifactorial experiment with three input parameters and three levels of variation was carried out. The selenous acid, cocamidopropyl betaine, and ascorbic acid concentrations were considered as input parameters. The output parameters were the average hydrodynamic radius of the particles ( ) and ζ-potential.