2012 Volume 33 Issue 8 Pages 437-442
We fabricated hydrophilic polymer-dome and hydrophobic polymer-pillar hybrid surfaces by using self-organized honeycomb patterned porous films (honeycomb films) consisting of double layer structures. The dome structures were composed of cross-linking polymer between a poly (vinyl alcohol) partially introduced reactive groups (rPVA) and adipic dihydrazide (ADH) as a cross-linker for the reactive groups in the rPVA. Pillar structures were obtained by peeling off the top layer of the honeycomb film. Dome and pillar hybrid surfaces fabricated in this report showed not only superhydrophobicity but also water droplet adhesive property. Ratios of the hydrophilic rPVA-dome in the pillar structures (dome density) were easily adjusted by preparation condition such as a solution temperature. The hybrid surface having 13% dome density was high-adhesive superhydrophobic surface and could keep 9 µL of water droplet when the surface turned upside down.
