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. 2021 Jul 26;21(15):5063. doi: 10.3390/s21155063

Figure 2.

Figure 2

SEM images of the screen-printed electrode (A) and SPCE/MWCNT/NiO1.5 (BD). (A,B) A scale of 1 µm and a magnitude of 50.00 kx. (C) A scale of 200 nm and a magnitude of 200 kx and 100 kx (D).