On-Site Evaluation of Oxygen-Plasma Treated Glass Surfaces for Anti-Soiling Properties

The preparation of anti-soiling surfaces was achieved by subjecting commercial glass substrates to oxygen plasma treatment. Surprisingly, even a brief 60-second exposure to the plasma was enough to drastically alter the glass surface, converting it into a superhydrophilic state. Analysis using atomic force microscopy revealed that increasing the duration of the oxygen plasma treatment not only elevated the surface roughness but also enhanced its superhydrophilic properties. When tested under the harsh outdoor conditions typical of the desert environment at the Outdoor Test Facility in Qatar, the plasma-treated glass surfaces demonstrated a significant anti-soiling effect in comparison to untreated samples. This effect was assessed by measuring dust accumulation on the surface, which was quantified using electron scanning microscopy images. Although the promising potential of plasma treatment for reducing soiling is evident, the complex mechanisms behind particle adhesion and surface interactions remain to be thoroughly explored. A deeper understanding of these interactions is essential for fully unlocking the practical benefits of this treatment in real-world applications.