Oxide Luminescent Materials.- Upconversion Phosphors.- Optical Properties of Metal, Semiconductor and Ceramic Nanostucture Grown By liquid Phase Pulsed Laser Ablation.- Optical Properties of Quantum Well Structure.- Metal Oxides Based SERs Substrates.- ZnO One Dimensional Nanostructures and Devices.- Metal Oxide Gas Sensors.- ZnO Based Dilute Magnetic Semiconductors.- Domain Matched Epit Axial Growth of Dielectric Thin Films.