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Figure 2 | Nanoscale Research Letters

Figure 2

From: A cylindrical core-shell-like TiO2 nanotube array anode for flexible fiber-type dye-sensitized solar cells

Figure 2

Large-scale FESEM images of the top (a) and back (b) sides of the TNTs array on the Ti wire; (c) large-scale and (d) enlarged FESEM image of the TNTs array being lifted off from the underlying surface; (e) FESEM image of the underlying bumpy surface of an inner Ti wire core; (f) FESEM image of the TNTs prepared by anodization of the Ti wire at 30 V in an electrolyte of ethylene glycol containing 0.20 wt% NH4F.

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