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. Author manuscript; available in PMC: 2013 Nov 20.
Published in final edited form as: Acc Chem Res. 2012 Mar 26;45(11):1916–1926. doi: 10.1021/ar200305f

FIGURE 8.

FIGURE 8

SEM images of intermediate NP superstructures and twisted ribbons after (A) 12, (B) 24, (C) 48, and (D) 72 hours of assembly. (E and F) twisted ribbons prepared at different light intensities: (E) 61 and (F) 21 mW; Ref 6.