Lei Jiang

[25] A. Boeker, A. Knoll, H. Elbs, V. Abetz, AHE Mueller, G. Krausch, Macromolecules 2002, 35, 1319. [26] a) TD Fornes, DR Paul, Polymer 2003, 44, 4993. b) N. Sheng, MC Boyce, DM Parks, GC Rutledge, I. Abes, RE Cohen, Polymer 2004, 45, 487. [27] MP Hughes, ...

Remarkable surface wettability transition occurs with an inducement of ultraviolet (UV) for aligned ZnO nanorod films. The inorganic oxide films, which show super-hydrophobicity (left), become super-hydrophilic (right) when exposed to UV illumination. After the films are placed in the dark, the wettability evolves back to super-hydrophobicity. This reversible effect is ascribed to the cooperation of the surface photosensitivity and the aligned nanostructure. Such special property will greatly extend the applications of ZnO films.

Titanium dioxide (TiO 2 ) is an important material that is used in many industrial applications related to photo-splitting of water,1 photocatalysis,2 photovoltaic devices,3 etc. Since the discovery4 of photoinduced superhydrophilicity (water contact angle (CA)<10°) on a ...

A superhydrophobic ZnO thin film was fabricated by the Au-catalyzed chemical vapor deposition method. The surface of the film exhibits hierarchical structure with nanostructures on sub-microstructures. The water contact angle (CA) was 164.3 degrees, turning into a superhydrophilic one (CA < 5 degrees) after UV illumination, which can be recovered through being placed in the dark or being heated. The film was attached tightly to the substrate, showing good stability and durability. The surface structures were characterized by scanning electron microscopy and atomic force microscopy.

Figure 1. SEM images of the coating mesh film prepared from a stainless steel mesh with an average pore diameter of about 115 μm. a) Large-area view of the coating mesh film; b) enlarged view of the coating mesh film (the microstructured ball-(I) and blocklike (II) morphology is ...

Super-hydrophobic surfaces, with a water contact angle (CA) greater than 150°, have attracted much interest for both fundamental research and practical applications. Recent studies on lotus and rice leaves reveal that a super-hydrophobic surface with both a large CA and small sliding angle (α) needs the cooperation of micro- and nanostructures, and the arrangement of the microstructures on this surface can influence the way a water droplet tends to move. These results from the natural world provide a guide for constructing artificial super-hydrophobic surfaces and designing surfaces with controllable wettability. Accordingly, super-hydrophobic surfaces of polymer nanofibers and differently patterned aligned carbon nanotube (ACNT) films have been fabricated.