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High magnification AFM images of self-assembled arrays of reengineered motor dodecamers. (A) Tetragonal arrays of N-strep dodecamer. (B and C) Cross-sections along the axes of the two-dimensional array. The unit cell is a parallelogram with cell dimensions of 16 nm × 13 nm. (D) Tetragonal arrays of C-strep dodecamer. The unit cell is rectangular with a lattice constant of ∼18 nm.
