Ag-doped TiO2 anatase Al2O3 coating Ga droplet GaN nanodot Technology: general issues Ti6Al4V lattice structure Zinc-blende additive manufacturing air plasma aluminum antibacterial and photoactivity applications atmospheric pressure atmospheric pressure plasma jet atmospheric-pressure plasma cathodic plasma electrolysis deposition chloroplatinic acid composite coating cut heat affected zone dye-sensitized solar cells hydrogen fraction mini-tensile test morphology nitrogen nitrogen dose amount nitrogen plasma optoelectronic properties organic-inorganic halide perovskite oxidation plasma plasma cutting