Stable Biomimetic Super-Hydrophobic Copper Surface Fabricated by a Simple Wet-Chemical Method

Superhydrophobic copper foil surface was fabricated by a simple wet-chemical etching and self-assemble method. We discussed the effect of surface structure on fabricating superhydrophobic surface. Scanning electron microscopy (SEM) and x-ray photoelectron spectroscopy (XPS) have been used to investigate the as-prepared surface. The result shows that the surface roughness is crucial to creating a superhydrophobic surface.