A simple one step method for fabricating superhydrophobic PTFE is proposed by scanning the PTFE surface with femtosecond laser ablation. Scanning electron microscopy images show that the laser irradiation creates dual scale rough micro/nanostructure required for superhydrophobicity. The surface morphology and thus the wetting properties can be tuned by varying the laser fluence as well as the scanning speed. Water contact angles as high as 170±4° were measured on the PTFE surface. Also, by adjusting the scanning overlap of the laser irritated lines, the water contact angle was found to exceed 175±3°.
