
Evolutional Transformation of Copper Oxide Nanowires to Copper Nanowires by a Reduction Technique
We report here a simple method to produce copper nanowires on a substrate as an alternative to template approaches and chemical synthesis routes. First, copper oxide nanowires are grown from conventional bulk copper wires by thermal oxidation. The resulting nanowires, which are a mixture
of CuO and Cu2O, are normal to the substrate. Next, these oxide nanowires are reduced to copper nanowires in the same furnace under a hydrogen flow at 400 °C. The evolution of oxide nanowires and their transformation to copper nanowires is studied as a function of time. Electrical
characterization reveals a reduction of resistance by six orders of magnitude at the completion of the reduction process.
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Keywords: COPPER NANOWIRE; COPPER OXIDE NANOWIRE; INTERCONNECT; OXIDATION; REDUCTION
Document Type: Research Article
Publication date: June 1, 2011
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