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Figure 3: Schematic illustrations (a) and TEM images of 10 nm- (c), 20 nm- (d), 30 nm- (e), 50 nm- (f), and 80 nm-sized (g) AuNPs lines. Schematic illustrations (b) and TEM images of 20×70 nm-sized AuNRs lines (h). Scale bars: 50 nm. Four strands of N3 with other DNA strands form an 18 nm-long unit of nanoribbon which are adapted to the size of 20 nm-sized AuNPs (i).