Synthesizing molecular fishing nets

A tourist enjoying the sunset at the harbor of a Mediterranean village will likely notice fishing nets spread out on the quay walls for drying. If the observer has a sense for aesthetics of structure, he or she will recognize that the beauty of the nets lies in their regularity and simplicity. Except for where they need mending, the nets consist of knots, or cross-links, connected by rope segments of uniform length, each knot connected to three or four neighbors.