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

Figure 6.

Figure 6

Morphology characterization with changes of Cu segment lengths. The SEM image (a) and TEM image (b) of sample Ni30s/Cu90s after annealing at 700 °C for 2 h in air, respectively; The SEM image (c) and TEM image (d) of Ni60s/Cu30s after annealing at 700 °C for 2 h in air, respectively.