Nano Archive

Tailoring morphology in free-standing anodic aluminium oxide: Control of barrier layer opening down to the sub-10 nm diameter

Gong, Jie and Butler, William H. and Zangari, Giovanni (2010) Tailoring morphology in free-standing anodic aluminium oxide: Control of barrier layer opening down to the sub-10 nm diameter. nanoscale .

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Abstract

Free-standing, highly ordered porous aluminium oxide templates were fabricated by three-step anodization in oxalic, sulfuric or phosphoric acid solutions, followed by dissolution of the aluminium substrate in HgCl2. Opening of the pore bottoms on the barrier layer side of these templates was carried out by using chemical or ion beam etching. Chemical etching is capable of achieving full pore opening, but partial pore opening occurs inhomogeneously. On the contrary, ion beam etching enables homogeneous and reproducible partial pore opening, with the pore size controlled through the etching time. By this method, pore openings as small as 5 nm can reliably be obtained

Item Type:Article
Subjects:Material Science > Nanochemistry
ID Code:8734
Deposited By:CSMNT
Deposited On:27 Mar 2010 06:44
Last Modified:27 Mar 2010 06:44

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