Structure induced wide range wettability: Controlled surface of micro-nano/nano structured copper films for enhanced interface

•Cu films with controllable micro-nano/nano surface is obtained.•The wide range wettability is realized by controlled surface structure.•A wide range of contact angles ranging from 6° to 152° are fabricated.•Cluster-nanoparticle structure possesses a superhydrophobic surface.•Structure-induced wettability is important to tune and simplify the interface.