A kind of superhydrophobic surface with controlled two-scale micro-nano textures was prepared.The lithography and ion etching technology were used to fabricate the micro structures on silicon wafers.Then the carbon nanotubes were controlled to grow on the prepared substrate by means of chemical vapor deposition( CVD) technology.The morphology and performance of the different surfaces have been examined by scanning electron microscope( SEM) and contact angle,rolling angle measurement.Particle image velocimet...