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. 2018 Feb 12;8(2):105. doi: 10.3390/nano8020105

Figure 8.

Figure 8

STM images of the graphene-TNTs composite (a) without illumination; (b) under visible light illumination and (c) under UV-light irradiation. The scale bar is 20 nm. Reproduced with permission from [14]. Copyright Elsevier, 2013.