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Published on: May 2, 2014
A novel method for metal oxide nanowire synthesis
Simas Rackauskas1, Albert G Nasibulin, Hua Jiang
1NanoMaterials Group, Department of Applied Physics and Center for New Materials, Helsinki University of Technology, P.O.B 5100, FIN-02015, Espoo, Finland.
Nanotechnology
|May 8, 2009
Summary
Efficiently grown metal oxide nanowires (NWs) show promising field emission properties. This cost-effective method produces iron oxide NWs rapidly, with potential applications in electronics.
Area of Science:
- Materials Science
- Nanotechnology
- Solid State Physics
Background:
- Metal oxide nanowires (NWs) are crucial for advanced electronic applications.
- Developing cost-effective and efficient synthesis methods is essential.
Purpose of the Study:
- To develop an efficient, non-catalytic, and economical method for growing metal oxide NWs.
- To characterize the morphology, composition, and field emission properties of the synthesized NWs.
Main Methods:
- Resistive heating of pure metal wires/foils at ambient conditions.
- Scanning Electron Microscopy (SEM), Transmission Electron Microscopy (TEM), Energy-Dispersive X-ray spectroscopy (EDX), X-ray Photoelectron Spectroscopy (XPS), and Raman spectroscopy for characterization.
- Field emission measurements.
Main Results:
- Achieved high growth rates for iron oxide NWs (>100 nm s(-1)).
- Produced NWs with lengths of 1-5 microm and diameters of 10-50 nm.
- Copper oxide (CuO) NWs exhibited a low threshold field of 4 V microm(-1) for field emission.
Conclusions:
- The developed resistive heating method is efficient and economical for producing various metal oxide NWs.
- The synthesized CuO NWs demonstrate excellent field emission characteristics, suggesting potential for field emission displays and other devices.
- The study provides insights into the formation mechanism of these metal oxide NWs.
