title: Metal nanowire arrays by electrodeposition.
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.
authors.affiliation: Department of Chemistry, University of California-Irvine, Irvine, CA 92697-2025, USA.
authors.forename: Erich C
authors.initials: EC
authors.lastname: Walter
authors.forename: Michael P
authors.initials: MP
authors.lastname: Zach
authors.forename: Frédéric
authors.initials: F
authors.lastname: Favier
authors.forename: Benjamin J
authors.initials: BJ
authors.lastname: Murray
authors.forename: Koji
authors.initials: K
authors.lastname: Inazu
authors.forename: John C
authors.initials: JC
authors.lastname: Hemminger
authors.forename: Reginald M
authors.initials: RM
authors.lastname: Penner