Fabrication of long-range ordered porous alumina membranes with various voltages applied for hard anodization

Hyun Chul Jang; Jung Mi Choi; Ki Tae An; Naesung Lee; Yunsun Park; Jung Hyun Sok

doi:10.3365/KJMM.2012.50.1.059

Fabrication of long-range ordered porous alumina membranes with various voltages applied for hard anodization

Hyun Chul Jang, Jung Mi Choi, Ki Tae An, Naesung Lee, Yunsun Park, Jung Hyun Sok

Department of Physics

Research output: Contribution to journal › Article › peer-review

4 Scopus citations

Abstract

Studying the long-range ordering of nanopores on the anodic aluminum oxide (AAO) membranes under a hard anodization (HA) approach is crucial in producing well-aligned nanopores on the AAO membranes. Electro-polishing in a mixture of ethanol and perchloric acid for 5 min removed marks formed by rolling and produced flat surfaces on aluminum substrates. The AAO was formed by the first HA process, providing seeds for the subsequent production of uniform AAO nanopores. The second HA process carried out on the seeds produced well-aligned, uniform AAO nanopores. The AAO nanopores, varying in size and shape, were observed with voltages applied for HA. This study provides a route for controlling the size and shape of AAO nanopores by changing the applied voltages.

Original language	English
Pages (from-to)	59-63
Number of pages	5
Journal	Journal of Korean Institute of Metals and Materials
Volume	50
Issue number	1
DOIs	https://doi.org/10.3365/KJMM.2012.50.1.059
State	Published - Jan 2012

Keywords

Anodic aluminum oxide
Anodization
Image analysis
Microstructure
Nanostructured materials

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10.3365/KJMM.2012.50.1.059

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title = "Fabrication of long-range ordered porous alumina membranes with various voltages applied for hard anodization",

abstract = "Studying the long-range ordering of nanopores on the anodic aluminum oxide (AAO) membranes under a hard anodization (HA) approach is crucial in producing well-aligned nanopores on the AAO membranes. Electro-polishing in a mixture of ethanol and perchloric acid for 5 min removed marks formed by rolling and produced flat surfaces on aluminum substrates. The AAO was formed by the first HA process, providing seeds for the subsequent production of uniform AAO nanopores. The second HA process carried out on the seeds produced well-aligned, uniform AAO nanopores. The AAO nanopores, varying in size and shape, were observed with voltages applied for HA. This study provides a route for controlling the size and shape of AAO nanopores by changing the applied voltages.",

keywords = "Anodic aluminum oxide, Anodization, Image analysis, Microstructure, Nanostructured materials",

author = "Jang, {Hyun Chul} and Choi, {Jung Mi} and An, {Ki Tae} and Naesung Lee and Yunsun Park and Sok, {Jung Hyun}",

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T1 - Fabrication of long-range ordered porous alumina membranes with various voltages applied for hard anodization

AU - Jang, Hyun Chul

AU - Choi, Jung Mi

AU - An, Ki Tae

AU - Lee, Naesung

AU - Park, Yunsun

AU - Sok, Jung Hyun

PY - 2012/1

Y1 - 2012/1

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AB - Studying the long-range ordering of nanopores on the anodic aluminum oxide (AAO) membranes under a hard anodization (HA) approach is crucial in producing well-aligned nanopores on the AAO membranes. Electro-polishing in a mixture of ethanol and perchloric acid for 5 min removed marks formed by rolling and produced flat surfaces on aluminum substrates. The AAO was formed by the first HA process, providing seeds for the subsequent production of uniform AAO nanopores. The second HA process carried out on the seeds produced well-aligned, uniform AAO nanopores. The AAO nanopores, varying in size and shape, were observed with voltages applied for HA. This study provides a route for controlling the size and shape of AAO nanopores by changing the applied voltages.

KW - Anodic aluminum oxide

KW - Anodization

KW - Image analysis

KW - Microstructure

KW - Nanostructured materials

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Fabrication of long-range ordered porous alumina membranes with various voltages applied for hard anodization

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Keywords

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