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. 2017 Mar 10;7:144. doi: 10.1038/s41598-017-00157-0

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© The Author(s) 2017

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The Ni60s/Cu90s sample after annealing at 500 °C for 2 h. (a) TEM image of the annealed single nanowire; (b–e) the magnified TEM image and the corresponding EDS elements mapping images; (f) SAED pattern of the NiO segment; (e) SAED pattern of the CuO segment.