Aligned oblique nanowire arrays (AONWAs; top image) with controllable obliquity, NW diameter, length, and density are produced by a novel method. A mechanism of array formation is proposed and it is demonstrated that the surface structure of AONWAs can be utilized to transport objects ranging from a polystyrene microsphere to a macroscopic PET sheet ( lower figures). Unidirectional wetting of the surface and the relation between the anisotropy of the wetting and the NWs' obliquity are described. Potential applications of the AONWAs include fluidic diodes, drug delivery systems, and self-cleaning without a liquid.