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Author

Park, Soojin
Nano-Functional Materials Lab
Research Interests
  • Block Copolymers, nanostructured materials for Lithium-Ion batteries, wearable and stretchable energy storage applications

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Fabrication of ordered anodic aluminum oxide using a solvent-induced array of block-copolymer micelles

Cited 30 times inthomson ciCited 30 times inthomson ci
Title
Fabrication of ordered anodic aluminum oxide using a solvent-induced array of block-copolymer micelles
Author
Kim, BokyungPark, SoojinMcCarthy, Thomas J.Russell, Thomas P.
Keywords
Block copolymers; Micelles; Solvent annealing; Surface reconstruction
Issue Date
200711
Publisher
WILEY-V C H VERLAG GMBH
Citation
SMALL, v.3, no.11, pp.1869 - 1872
Abstract
A unique approach for the preparation of pretextured surface patterns on aluminum using the thin film of poly (styrene-b-4-vinylpyridine) (PS-b-P4VP) diblock copolymer was demonstrated. The pores initiated and guided the growth of the channels during anodization, while the arrays of cylindrical microdomains, which were used for fabrication of aluminum, were produced by annealing block copolymer. The scanning force microscopy (SFM) images of alumina after anodization showed that the volume expansion during the process resulted in the formation of dimpled structures on the aluminum surface. Results showed subsequent anodization in concentrated sulfuric acid that enabled the formation of channels with long range lateral order and the pore periodicity, and center to center distances between pores is controlled by changing the molecular weight of the block polymers. Optimization of self organized growth conditions at low voltage also resulted in scaling down the pore intervals.
URI
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DOI
http://dx.doi.org/10.1002/smll.200700498
ISSN
1613-6810
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