CuO nanowire synthesis catalyzed by a CoWP nanofilter

This paper presents a new approach to synthesizing self-aligned, uniform single-crystal cupric oxide (CuO) nanowires on a Cu-based multilayer on SiO2/Si. The key is to introduce CoWP as a nanofilter to catalyze CuO-nanowire synthesis simply by calcination at 400 degrees C in air. The CuO nanowires (diameter: 10-50 nm, length: 7 mu m) exhibit low resistivity (10-60 Omega cm), a low turn-on field (4.5 V mu m(-1)) and a high field-enhancement factor (similar to 1400). (C) 2008 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.