Pu Shi

A novel preparation of polystyrene film with a superhydrophobic surface using a template method

Inspired by the self-cleaning superhydrophobic taro leaf, a polystyrene (PS) film with superhydrophobic surface was obtained using a natural taro leaf as template. The water contact angle and the sliding angle of the superhydrophobic PS surface were 158° ± 1.6° and 3°, respectively. The PS surface was still superhydrophobic when contacting with black ink, fresh blood and even viscous glue water. SEM shows that the surface structure comprises many uniform papillae with the diameters ranging from 10 to 15 µm, which is similar to the surface structure of natural taro leaf. Such a special surface morphology may result in the superhydrophobic property.

A Stable Biomimetic Superhydrophobic CuO Surface Prepared by a Facile and Inexpensive Environmental-Friendly Method

A facile and inexpensive environmental-friendly method was developed to prepare a biomimetic superhydrophobic CuO surface with hierarchical micro- and nanostructures by the combination of a simple solid state reaction and a convenient dipping-coating method. The biomimetic CuO surface showed superhydrophobicity even for some corrosive liquids including salt solutions and acidic and basic solutions at a wide pH range from 2 to 13. Moreover, the superhydrophobic CuO surface showed high stability in ambient environment even exposed to ultraviolet light for 10 h.