Fig. 1.

Time sequence for single experimental run. The number of particles in the final network is 784. (a) Circular initial condition (t = 0 sec). (b) After the voltage is applied, bumps form along the perimeter of the distribution (t = 10 sec). (c) Bumps self-organize into chains (t = 847 sec). (d) One chain connects, the rest wither and form into outer termini, and interior particles begin to form the inner network (t = 854 sec). (e) Network unfolds from the outside in with little change in network structure (t = 928 sec). (f) Final state of network. The box indicates the area of detail shown in Fig. 3 (t = 4,647 sec).