Fig. 8.

2D and 3D DNA origami. a 2D smiley face [131], b 3D cube, [132], c 3D multi-layer structure with honeycomb lattice [134], d 3D DNA gear [136], e 3D DNA vase [137], f 3D DNA mesh [139], g 2D wireframe DNA origami [138], h single-stranded DNA origami [140], scaled-up DNA origami with i complicated patterns[143] and j gigadoltan scale [144]. Reprinted with permission from: a Ref. [131], copyright (2006) Springer Nature; b Ref. [132] copyright (2009) Springer Nature; c Ref. [134], copyright (2009) Springer Nature; d Ref. [136], copyright (2009) AAAS; e Ref. [137], copyright (2011) AAAS; f Ref. [139], copyright (2015) Springer Nature; g Ref. [138], copyright (2015) Springer Nature; h Ref. [140] copyright (2017) AAAS; i Ref. [143], copyright (2017) Springer Nature; j Ref. [144] copyright (2017) Springer Nature