Figure 5: Formation of checkerboard lattices of varying aspect ratio on a single mica surface.
From: Self-assembly of two-dimensional DNA origami lattices using cation-controlled surface diffusion
(a,b) Origami checkerboard lattices whose edges appear to follow ‘domain boundaries’ of a mica surface. The zoom-in tapping amplitude image (b) of the boxed area in a reveals some of the putative domain boundaries (indicated by arrows). (c) A large-area AFM image (30 μm × 30 μm) that shows large regions of distinct lattice morphology. (d) A zoom-in tapping amplitude image of the boxed area in c, from a region with particularly large, well-separated, single-domain lattices. The zoom shows narrow (roughly origami-sized), long domains. Boundaries between domains appear as parallel lines and are again indicated by arrows. These rectangles had ‘GC’ blunt ends. Scale bars, (a) 1 μm, (b) 500 nm, (c) 3 μm and (d) 200 nm.
