Self-assembly is ubiquitous in the natural world,
serving as a route to form organized structures in every living
organism. This phenomenon can be seen, for instance, when two
strands of DNA—without any external prodding or guidance—join to
form a double helix, or when large numbers of molecules combine to
create membranes or other vital cellular structures. Everything
goes to its rightful place without an unseen builder having to put
all the pieces together, one at a time.
Researchers construct molecular nanofibers that are stronger
than steel
