Gallium oxide nanowires have been successfully synthesized by DC arc plasma without the use of any catalyst. The nanowires have been identified to be β-Ga2O3. Their diameters are ranging from 5 to 15 nm and maximal lengths can attain 10μm. The microstructural study of the gallium anode shows that nanowires grew from it. These results are compared with previous work on Al2O3 nanowires growth by the same method. Several assumptions of growth are proposed.
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