Superhydrophobicity and Superhydrophilicity

Sun T, Wang G, Feng L et al (2004) Reversible Switching between superhydrophilicity and superhydrophobicity. Angew Chem Int Ed 43 357-360... 

Superhydrophilic and superhydrophobic surfaces are more effective at stabilizing two-phase microflows. These surfaces can be obtained by creating roughness utilizing titanium nanoparticles. Titanium modification of a microchannel yields nanometer-scale surface roughness, and subsequent... 

Xia F, Feng L, Wang ST, Sun TL, Song WL, Jiang WH, et al. Dual-responsive surfaces that switch superhydrophilicity and superhydrophobicity. Adv Mater 2006 18(4) 432—6. 

SunT.,Wang G., Feng L., Liu B., MaY., Jiang L. and Zhu D. (2004), Reversible switching between superhydrophilicity and superhydrophobicity.Angewanulte Chemie International Edition, 43 pp. 357-360. 

Fernandez-Blazquez,J.R, Fell, D., Bonaccurso, E., de Campo.A., 2011. Superhydrophilic and superhydrophobic nanostructured surfaces via plasma treatment.. Colloid Interface Sci. 357,234. 

Based on colloidal monolayers of polystyrene spheres, we have prepared various two-dimensional nano-structured arrays by solution routes and electrodeposition. Many ordered structured arrays generated using these methods are of surface roughness on the nano- and micro-scales, and could be superhydrophobic or superhydrophilic. The nano-devices based on such nano-structured arrays would be waterproof and selfcleaning, in addition to their special device functions. In this article, taking silica, ZnO and gold as examples of the insulators, semiconductors and metals, respectively, we report some of our recent results to demonstrate controlled wettability and superhydrophobicity of two-dimensional ordered nano-stmctured arrays with centimeter square-size based on colloidal monolayers. 

Cellulose based ultrafine fibers with superhydrophobicity have been prepared. Park et al. [115] electrospim cellulose triacetate fibers using methylene chloride/ethanol as the solvent system and further converted the fiber mat to be superhydrophobic by plasma treatment. Another method using sol-gel coating to converting cellulose acetate fiber mats fi om superhydrophilicity to superhydrophobicity was done by Ding et al. [116]. The resultant superhydrophobic fiber mats are useful for many potential applications such as self-cleaning materials and contamination prevention, due to their poor wettability. 

Stratakis E, Mateescu A, Barberoglou M, Vamvakaki M, Fotakis C, Anastasiadis SH. From superhydrophobicity and water repellency to superhydrophilicity smart polymer-functionalized surfaces. Chem Commun 2010 46(23) 4136—8. 

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