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Nanowire Formation by Electrodeposition in Modified Nanoporous Polycrystalline Anodic Alumina Templates

Published online by Cambridge University Press:  17 March 2011

M. Mikhaylova ,
M. Toprak ,
D. K. Kim ,
Y. Zhang  and
M. Muhammed
M. Mikhaylova
Affiliation:
Materials Chemistry Division, Royal Institute of Technology, SE-100 44 Stockholm, Sweden
M. Toprak
Affiliation:
Materials Chemistry Division, Royal Institute of Technology, SE-100 44 Stockholm, Sweden
D. K. Kim
Affiliation:
Materials Chemistry Division, Royal Institute of Technology, SE-100 44 Stockholm, Sweden
Y. Zhang
Affiliation:
Materials Chemistry Division, Royal Institute of Technology, SE-100 44 Stockholm, Sweden
M. Muhammed
Affiliation:
Materials Chemistry Division, Royal Institute of Technology, SE-100 44 Stockholm, Sweden
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Abstract

Template-assisted metallic nanowires, or hollow nanotubes, were synthesized by controlled electrodeposition of a metal salt under a controlled ac frequency in an anodic alumina membrane (AAM). Homogeneous large dimension AAM (D=5cm) was prepared by a modified two step anodization, using a specially designed reaction vessel that holds the sample perpendicular during the anodization. A ripping process, i.e. applying an opposite current after the anodization, easily separated the AAM from the Al substrate. TEM, SEM, and AFM were used to investigate the AAM structure, pore density and size, and distribution. Large aspect ratio metallic nanoparticles were prepared in an AAM within hexagonally close packed (hcp) alumina nanochannels.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 704: Symposium W – Nanoparticulate Materials , 2001 , W6.34.1
Copyright
Copyright © Materials Research Society 2002

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