The capillary distribution of reliable solutions for gas detections implies identifying high throughput and up-scalable approaches for the growth of porous active materials with high surface to volume ratio and high surface availability/reactivity. Thereby we implemented a competitive method to render thin (hundreds of nanometers) TiO 2 layers highly sensitive to gas species. This method is easily implementable in gas sensor devices with an additional ending step at room temperature without any temperature needed for reaction …