Figure 1

(a) Schematic showing the separate injection of the TiO2 and SiO2 precursors into the stream of a blown arc discharge, (b) photography of the experimental set-up presenting the torch mounted on a 6-axis arm robot.
(a) Schematic showing the separate injection of the TiO2 and SiO2 precursors into the stream of a blown arc discharge, (b) photography of the experimental set-up presenting the torch mounted on a 6-axis arm robot.