Oxide semiconductors, Density Functional Theory, Electronic properties, optical properties, Gas Optical Sensors, Leak mode resonance
TiO2, cobalt, electrochemical anodization, EDS, Vickers microhardness, Microscratch
Ultrasonic Spray Pyrolysis, ZnO, Nanostructures, Crystal Defects
Sputtering, microstructure, Rutile, TiO2, Thin films, hardness