Comparison Of Anti-Fouling Performance Of Textured Glass Surface Fabricated By Ductile-Mode Peening And Precision Grinding

Recently, there has been a growing demand for precision processing glass. In addition to dimensional accuracy, surface texturing to impart functional properties has attracted increasing attention. For example, anti-fouling performance against powder adhesion is required for cover glasses of solar cells. Powder adhesion is governed by van der Waals forces, which depend on the surface texture of the substrate, suggesting that surface structures influence adhesion behavior. Our previous study demonstrated that angled fine particle peening (FPP) could fabricate a nanoscale fine texture on glass surfaces through ductile-mode peening—glass processing without brittle fracture. In this study, the effect of surface texturing by angled-FPP on anti-fouling performance was evaluated and compared to other surface texturing methods: the electrolytic in-process dressing (ELID) grinding that can fabricate a precise structure according to the copying principle. Results from powder adhesion tests and microscopic observations revealed that both processed surfaces exhibited better anti-fouling properties, with less powder residue compared to unprocessed surfaces.