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. Author manuscript; available in PMC: 2019 May 31.
Published in final edited form as: ACS Nano. 2017 Jan 31;11(2):1301–1306. doi: 10.1021/acsnano.6b05602

Figure 2. Construction of helical DNA tile tubes with controlled nanometer-sized radius of curvature.

Figure 2

a) DNA tile tubes with decreasing size n (from 12HT to 4HT) and constant number of insertions N = 1 as observed by TEM. Inset: Radius of curvature rc extracted from the 2D-confined undulatory shape. b) Relationship between rc and tubes of different size with insertions (red triangles) and with c) deletions (blue triangles). d) Tubes with constant size (n = 12) and increasing amounts of insertions N (from 1 to 6) as observed by TEM. Relationship between rc and the amount of e) insertions (red triangles) f) deletions (blue triangles) in tubes of constant size. g) Tubes with increasing amounts of both insertions and deletions N (from 1 to 5) as observed by TEM. Relationship between rc and tubes of h) symmetric (red triangles) and i) asymmetric arrangements of insertions and deletions. Theoretical predictions of rc from an energetic model are shown in black symbols for each tube type. Scale bars: 500 nm.