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. 2015 Jul 7;5:11933. doi: 10.1038/srep11933

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(a) TEM image of RuO₂ nanowire on Au nanoparticle-decorated TiO₂ nanowire. It is clearly seen that the nanowire is grown on the Au nanoparticle (scale bar 20 nm). (b) High-angle annular dark field (HAADF) scanning TEM image of 3D branched nanowires. EDS elemental distribution map of Ru, Au, and Ti (scale bar 100 nm).