Document Detail


Formation of anodic aluminum oxide with serrated nanochannels.
MedLine Citation:
PMID:  20617804     Owner:  NLM     Status:  PubMed-not-MEDLINE    
Abstract/OtherAbstract:
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 field conduction and anionic incorporation, an increase of anodizing voltage leads to an increase of the impurity levels and also the field 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.
Authors:
Dongdong Li; Liang Zhao; Chuanhai Jiang; Jia G Lu
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Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  Nano letters     Volume:  10     ISSN:  1530-6992     ISO Abbreviation:  Nano Lett.     Publication Date:  2010 Aug 
Date Detail:
Created Date:  2010-08-11     Completed Date:  2010-11-22     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  101088070     Medline TA:  Nano Lett     Country:  United States    
Other Details:
Languages:  eng     Pagination:  2766-71     Citation Subset:  -    
Affiliation:
School of Materials Science and Engineering, Shanghai Jiao Tong University, Shanghai 200240, China.
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