Transferrable superhydrophobic TiO sub(2) nanorods on reduced graphene oxide films using block copolymer templates

Superhydrophobic surfaces are normally fixed on the chosen materials. Here, we report transferrable superhydrophobicity which was enabled by fabricating TiO sub(2) nanorods on a reduced graphene oxide (rGO) film. Superhydrophobic TiO sub(2) nanorods were first synthesized from a nanoporous template of block copolymers (BCPs). The controllability over the dimension and shape of nanopores of the BCP template allowed for the adjustment of TiO sub(2) nanostructures for superhydrophobicity. Since the rGO film provided effective transferring, TiO sub(2) nanorods were conveyed onto a flexible polymer film and a metal substrate. Thus, the surface of the designated substrate was successfully changed to a superhydrophobic surface without alteration of its inherent characteristics.