Di-block copolymer directed anodization of hexagonally ordered nanoporous aluminum oxide
- Authors
- Noh, Kunbae; Choi, Chulmin; Kim, Hyunsu; Oh, Young; Kim, Jin-Yeol; Jung, Se-Yeon; Seong, Tae-Yeon; Jin, Sungho
- Issue Date
- 11월-2011
- Publisher
- A V S AMER INST PHYSICS
- Citation
- JOURNAL OF VACUUM SCIENCE & TECHNOLOGY B, v.29, no.6
- Indexed
- SCIE
SCOPUS
- Journal Title
- JOURNAL OF VACUUM SCIENCE & TECHNOLOGY B
- Volume
- 29
- Number
- 6
- URI
- https://scholar.korea.ac.kr/handle/2021.sw.korea/111206
- DOI
- 10.1116/1.3659716
- ISSN
- 1071-1023
- Abstract
- Porous anodized aluminum oxide (AAO) nanostructures have been extensively investigated as versatile templates for nanodots and nanowires for many applications. Such self-ordered AAO structures are often achieved by so-called two-step anodization. Ordered pore arrangements can be obtained in the second step after removing the AAO layer formed in the first anodizing step, during which hexagonally ordered, concave-pored Al surface is formed so as to serve as vertical pore nucleation sites for the subsequent anodization step. Although such a two-step anodization process has proven useful for bulk Al surface, the relatively large amount of Al material that needs to be used up to obtain a well ordered AAO template is an issue when the starting material is a thin film layer of Al rather than a bulk Al foil. In this paper, we demonstrate successful fabrications of ordered and vertically aligned AAO nanopore patterns directed by a hexagonally patterned poly(styrene-b-4-vinylpyridine) di-block copolymer layer placed on a thin Al film surface. In addition, a successful electrodeposition of Ni nanowires into the AAO nanopores is demonstrated and their magnetization properties are studied. (C) 2011 American Vacuum Society. [DOI: 10.1116/1.3659716]
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