Superhydrophobic fabrication of anodic aluminum oxide with durable and pitch-controlled nanostructure

Bo Gi Park; Wonbae Lee; Jung Suk Kim; Kyu Back Lee

doi:10.1016/j.colsurfa.2010.08.014

Superhydrophobic fabrication of anodic aluminum oxide with durable and pitch-controlled nanostructure

Bo Gi Park, Wonbae Lee, Jung Suk Kim, Kyu Back Lee

School of Biomedical Engineering

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

38 Citations (Scopus)

Abstract

Durable and pitch-controlled nanostructures to have well-defined superhydrophobic functions were fabricated by post-etching of AAO with a self-assembled heptadecafluoro-1,1,2,2-tetrahydrodecyl-trichlorosilane monolayer coating. The inter-pore distance at the surface of anodic aluminum oxide (AAO) was found to be an important factor for controlling the superhydrophobic adhesiveness. The hysteresis of the contact angles and the adhesiveness to a water droplet were minimized in two-steps during post-etching in phosphoric AAO (PAAO). A more durable nanostructure was obtained with the superhydrophobic surface of PAAO than those of oxalic AAO and of sulfuric AAO because of the inherent hardness of PAAO and its long inter-pore distance (500. nm).

Original language	English
Pages (from-to)	15-19
Number of pages	5
Journal	Colloids and Surfaces A: Physicochemical and Engineering Aspects
Volume	370
Issue number	1-3
DOIs	https://doi.org/10.1016/j.colsurfa.2010.08.014
Publication status	Published - 2010 Nov 5

Keywords

Anodic aluminum oxide (AAO)
Hard anodization
Inter-pore distance
Nanostructure
Superhydrophobicity

ASJC Scopus subject areas

Surfaces and Interfaces
Physical and Theoretical Chemistry
Colloid and Surface Chemistry

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title = "Superhydrophobic fabrication of anodic aluminum oxide with durable and pitch-controlled nanostructure",

abstract = "Durable and pitch-controlled nanostructures to have well-defined superhydrophobic functions were fabricated by post-etching of AAO with a self-assembled heptadecafluoro-1,1,2,2-tetrahydrodecyl-trichlorosilane monolayer coating. The inter-pore distance at the surface of anodic aluminum oxide (AAO) was found to be an important factor for controlling the superhydrophobic adhesiveness. The hysteresis of the contact angles and the adhesiveness to a water droplet were minimized in two-steps during post-etching in phosphoric AAO (PAAO). A more durable nanostructure was obtained with the superhydrophobic surface of PAAO than those of oxalic AAO and of sulfuric AAO because of the inherent hardness of PAAO and its long inter-pore distance (500. nm).",

keywords = "Anodic aluminum oxide (AAO), Hard anodization, Inter-pore distance, Nanostructure, Superhydrophobicity",

author = "Park, {Bo Gi} and Wonbae Lee and Kim, {Jung Suk} and Lee, {Kyu Back}",

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T1 - Superhydrophobic fabrication of anodic aluminum oxide with durable and pitch-controlled nanostructure

AU - Park, Bo Gi

AU - Lee, Wonbae

AU - Kim, Jung Suk

AU - Lee, Kyu Back

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Y1 - 2010/11/5

N2 - Durable and pitch-controlled nanostructures to have well-defined superhydrophobic functions were fabricated by post-etching of AAO with a self-assembled heptadecafluoro-1,1,2,2-tetrahydrodecyl-trichlorosilane monolayer coating. The inter-pore distance at the surface of anodic aluminum oxide (AAO) was found to be an important factor for controlling the superhydrophobic adhesiveness. The hysteresis of the contact angles and the adhesiveness to a water droplet were minimized in two-steps during post-etching in phosphoric AAO (PAAO). A more durable nanostructure was obtained with the superhydrophobic surface of PAAO than those of oxalic AAO and of sulfuric AAO because of the inherent hardness of PAAO and its long inter-pore distance (500. nm).

AB - Durable and pitch-controlled nanostructures to have well-defined superhydrophobic functions were fabricated by post-etching of AAO with a self-assembled heptadecafluoro-1,1,2,2-tetrahydrodecyl-trichlorosilane monolayer coating. The inter-pore distance at the surface of anodic aluminum oxide (AAO) was found to be an important factor for controlling the superhydrophobic adhesiveness. The hysteresis of the contact angles and the adhesiveness to a water droplet were minimized in two-steps during post-etching in phosphoric AAO (PAAO). A more durable nanostructure was obtained with the superhydrophobic surface of PAAO than those of oxalic AAO and of sulfuric AAO because of the inherent hardness of PAAO and its long inter-pore distance (500. nm).

KW - Anodic aluminum oxide (AAO)

KW - Hard anodization

KW - Inter-pore distance

KW - Nanostructure

KW - Superhydrophobicity

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