Fabrication of patterned surfaces that exhibit variable wettability ranging from superhydrophobicity to high hydrophilicity by laser irradiation

- A simple method for fabricating patterned surfaces that exhibit different wettabilities in different areas using laser machining.
- New crumb-like nanostructures were formed for high laser powers, which made the surface rougher than one at low laser power.
- Complex patterns, including stripes and circles, having different wettabilities in different area could be successfully fabricated using this method.