期刊
NANO LETTERS
卷 10, 期 8, 页码 2766-2771出版社
AMER CHEMICAL SOC
DOI: 10.1021/nl1004493
关键词
Anodic aluminum oxide; serrated channel; plastic deformation
类别
资金
- China Scholarship Council
- International Scientific Collaboration Fund of Shanghai [08520705300]
We report a simple and robust method to self-assemble porous anodic aluminum oxide membranes with serrated nanochannels by anodizing in phosphoric acid solution. Due to high held conduction and anionic incorporation, an increase of anodizing voltage leads to an increase of the impurity levels and also the held strength across barrier layer. On the basis of both experiment and simulation results, the initiation and formation of serrated channels are attributed to the evolution of oxygen gas bubbles followed by plastic deformation in the oxide film. Alternating anodization in oxalic and phosphoric acids is applied to construct multilayered membranes with smooth and serrated channels, demonstrating a unique way to design and construct a three-dimensional hierarchical system with controllable morphology and composition.
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