Fig. 5.

Schematic drawing of a proposed 2D pattern using a directed nucleation assembly technique. In red is an input single-stranded DNA scaffold strand that encodes a 2D pattern (each odd row traversing from left to right, and each even row traversing right to left). Specific DNA tiles self-assemble around each segment of this input strand. The tiles then (or perhaps concurrently) self-assemble into a 2D tiling lattice with the predetermined pattern.