Controlled growth of vertical ZnO nanowires on copper substrate
Abstract
We present an approach for diameter control of vertically aligned ZnO nanowires (NWs) grown directly on copper substrates. Vapor-solid growth was done at 550 °C with solid Zn precursor under Ar/O2 flow, and the resulting nanowires with in situ-controllable diameters ranged between 50 to 500 nm. The nanowires were observed to elongate in tip growth and diameters were directly controlled by varying the oxygen concentration. Direct growth of vertical wires on metal substrates is expected to be useful to construct piezoelectric devices and applications involving sensors and detectors.
Document Details
- Document Type
- Pub Defense Publication
- Publication Date
- Feb 25, 2013
- Source ID
- 10.1063/1.4793758
Entities
People
- Jovi Gacusan
- M. Meyyappan
- Michael M. Oye
- Mohan Sanghadasa
- Nobuhiko P. Kobayashi
- Tam-Triet Ngo-Duc
Organizations
- CeNTech
- Defense Advanced Research Projects Agency
- National Aeronautics and Space Administration
- University of California, Santa Cruz