Self-cleaning surfaces typically work through one of two mechanisms:
Superhydrophobicity: This property causes water to bead up and roll off the surface, taking dirt and contaminants with it. This is often achieved by creating a nano-textured surface that mimics the Lotus effect. Photocatalysis: Nanoparticles like titanium dioxide (TiO2) can break down organic contaminants when exposed to sunlight, effectively cleaning the surface.
