Fig. 1: Building blocks of DNA moiré superlattices.
From: DNA moiré superlattices
a, Moiré superlattices across different length scales. (i) Graphene moiré superlattice with asub at the ångström scale. asub = 2.46 Å, pM = 12.8 nm at θ = 1.1°. (ii) DNA moiré superlattice with asub at the nanoscale. asub, ~several nanometres; pM, ~10–100 nm. Twisted DNA origami seed templates the growth of stacked DNA SST sublattices with a prescribed twist angle θ. Captures (purple) are extended from the origami seed. Each SST (blue) measures ~6 nm × 3 nm. (iii) Photonic moiré superlattice with asub at the submicrometre scale. asub > 100 nm, pM ~μm. b, Twisted DNA origami seeds. Design schematic, θ prediction based on coarse-grained simulation, and TEM image of seed S (i) and seed H (ii). Scale bars, 20 nm. c, DNA SST sublattices with different lattice symmetries. Design schematics, TEM images (scale bars, 1 μm), cryo-EM images (scale bars, 20 nm), class averages (scale bars, 2 nm) and FFT patterns (scale bars, 0.2 nm−1) for square (i), kagome (ii) and honeycomb (iii) sublattices. Lattice constants, interplane spacings and interplane angles are marked in the corresponding class-average images and FFT patterns.
