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Metal nanowire arrays by electrodeposition.

Authors
  • Walter, Erich C
  • Zach, Michael P
  • Favier, Frédéric
  • Murray, Benjamin J
  • Inazu, Koji
  • Hemminger, John C
  • Penner, Reginald M
Type
Published Article
Journal
Chemphyschem : a European journal of chemical physics and physical chemistry
Publication Date
Feb 17, 2003
Volume
4
Issue
2
Pages
131–138
Identifiers
PMID: 12619411
Source
Medline
License
Unknown

Abstract

We describe two related methods for preparing arrays of nanowires composed of molybdenum, copper, nickel, gold, and palladium. Nanowires were obtained by selectively electrodepositing either a metal oxide or a metal at the step edges present on the basal plane of highly oriented pyrolytic graphite (HOPG) electrodes. If a metal oxide was electrodeposited, then nanowires of the parent metal were obtained by reduction at elevated temperature in hydrogen. The resulting nanowires were organized in parallel arrays of 100-1000 wires. These nanowires were long (some > 500 microns), polycrystalline, and approximately hemicylindrical in cross-section. The nanowire arrays prepared by electrodeposition were also "portable": After embedding the nanowires in a polymer or cyanoacrylate film, arrays of nanowires could be lifted off the graphite surface thereby facilitating the incorporation of metal nanowire arrays into devices such as sensors.

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