Journal
LANGMUIR
Volume 27, Issue 7, Pages 4265-4270Publisher
AMER CHEMICAL SOC
DOI: 10.1021/la105112g
Keywords
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Funding
- National Natural Science Fundation [21003006, 20974113, 20601005, 20971010]
- National Research Fund for Fundamental Key Projects [2010CB934700, 2009CB930404, 2007CB936403]
- Fundamental Research Funds for the Central Universities [YWF-10-01-B16, YWF-10-01-C10]
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Most research of responsive surfaces mainly focus on the wettability transition on different solid substrate surfaces, but the dynamic properties of the micro/nanostnicture-enhanced responsive wettability on microscale pore arrays are lacking and still remain a challenge. Here we report the photocontrollable water permeation on micro/nanoscale hierarchical structured ZnO-coated stainless steel mesh films. Especially, for aligned ZnO nanorod array-coated stainless steel mesh film, the film shows good water permeability under irradiation, while it is impermeable to water after dark storage. A detailed investigation indicates that the special nanostructure and the appropriate size of the microscale mesh pores play a crucial role in the excellent controllability over water permeation. The excellent controllability of water permeation on this film is promising in various important applications such as filtration, microreactor, and micro/nano fluidic devices. This work may provide interesting insight into the design of novel functional devices that are relevant to surface wettability.
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