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Fabrication of Ideally Ordered Nanoporous Alumina Films and Integrated Alumina Nanotubule Arrays by High-Field Anodization

Authors

  • S.-Z. Chu,

    1. Advanced Materials Laboratory, National Institute for Materials Science (NIMS), Namiki-1, Tsukuba, Ibaraki, 305-0044, Japan
    2. Present address: Materials Science Research Laboratory, Central Research Institute of Electric Power Industry (CRIEPI), Nagasaka 2-6-1, Yokosuka, Knagawa, 240-0196, Japan.
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  • K. Wada,

    1. Advanced Materials Laboratory, National Institute for Materials Science (NIMS), Namiki-1, Tsukuba, Ibaraki, 305-0044, Japan
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  • S. Inoue,

    1. Advanced Materials Laboratory, National Institute for Materials Science (NIMS), Namiki-1, Tsukuba, Ibaraki, 305-0044, Japan
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  • M. Isogai,

    1. Department of Materials Science and Technology, Graduate School of Industrial Science and Technology, Tokyo University of Science, 2641, Yamazaki, Noda, Chiba 278-8510, Japan
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  • A. Yasumori

    1. Department of Materials Science and Technology, Graduate School of Industrial Science and Technology, Tokyo University of Science, 2641, Yamazaki, Noda, Chiba 278-8510, Japan
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  • This work is part of the Japan Millennium Project of “Exploration and Creation of a Catalyst for Removing Harmful Chemical Substances”.

Abstract

original image

A new and rapid approach to fabricating highly ordered nanoporous alumina films and integrated alumina nanotubule arrays with perfect hexagonal structures (see Figure and inside cover) is described. By using high-field anodization in a sulfuric acid solution, high-quality self-ordered alumina membranes are produced in hours rather than days. This cost-effective approach to large-area ordered nanoporous membranes may find applications in diverse areas of nanotechnology.

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