Penetrating the Oxide Barrier in Situ and Separating Freestanding Porous Anodic Alumina Films in One Step
- 3 March 2005
- journal article
- Published by American Chemical Society (ACS) in Nano Letters
- Vol. 5 (4), 697-703
- https://doi.org/10.1021/nl0501112
Abstract
A simple method for penetrating the barrier layer of an anodic aluminum oxide (AAO) film and for detaching the AAO film from residual Al foil was developed by reversing the bias voltage in situ after the anodization process is completed. With this technique, we have been able to obtain large pieces of free-standing AAO membranes with regular pore sizes of sub-10 nm. By combining Ar ion milling and wetting enhancement processes, Au nanowires were grown in the sub-10 nm pores of the AAO films. Further scaling down of the pore size and extension to the deposition of nanowires and nanotubes of materials other than Au should be possible by further optimizing this procedure.Keywords
This publication has 32 references indexed in Scilit:
- Templated Synthesis of Highly Ordered Mesostructured Nanowires and Nanowire ArraysNano Letters, 2004
- Biotemplate Synthesis of 3-nm Nickel and Cobalt NanowiresNano Letters, 2003
- Electrochemical Growth of Single-Crystal Metal Nanowires via a Two-Dimensional Nucleation and Growth MechanismNano Letters, 2003
- Ultrathin Single-Crystalline Silver Nanowire Arrays Formed in an Ambient Solution PhaseScience, 2001
- Orthogonal Self-Assembly on Colloidal Gold-Platinum NanorodsAdvanced Materials, 1999
- Using Template-Synthesized Micro- and Nanowires as Building Blocks for Self-Assembly of Supramolecular ArchitecturesChemistry of Materials, 1999
- Structural and magneto-transport properties of electrodeposited bismuth nanowiresApplied Physics Letters, 1998
- A general template-based method for the preparation of nanomaterialsJournal of Materials Chemistry, 1997
- Membrane-Based Synthesis of NanomaterialsChemistry of Materials, 1996
- Nanomaterials: A Membrane-Based Synthetic ApproachScience, 1994