In a Chinese-German collaboration with Chunhai Fan, Huajie Liu and coworkers, localized DNA strand displacement cascades were realized that allow exploration of paths in tree-like graphs defined on the origami platforms.
Read the full story here:
J. Chao, J. Wang, F. Wang, X. Ouyang, E. Kopperger, H. Liu, Q. Li, J. Shi, L. Wang, J. Hu, L. Wang, W. Huang, F. C. Simmel, C. Fan, Solving mazes with single-molecule DNA navigators. Nature Materials (2018).
https://www.nature.com/articles/s41563-018-0205-3
See also:
https://physicsworld.com/a/dna-nanobot-escapes-from-a-maze/