The Ag NP coated cotton fabric exhibited excellent bactericidal effects on pathogenic bacteria without causing direct skin irritation. Zhao et al. produced nanostructured silver coating layers on polyimide films by treatment with aqueous KOH and AgNO3, followed by thermal treatment at 200◦C or higher temperatures. Further modifica-tion of the gold-coated silver layers with n-dodecanethiol led to hydrophobic surfaces.