Spiney membrane modelThis applet displays a cellular automaton model of membranes.
The model is exactly reversible - and can be run backwards by ticking the checkbox supplied.
It is a development of the "string" model - and uses the same neighbourhood and number of states per cell - but applies a different rule.
As with the other membrane models here, it preserves volume, and topology.
Partition rulesThe automaton can be thought of as consisting of three layers:
Cellular evolution progresses according to a very large number of rules:
Fractal structures appear to emerge during the evolution of the automaton.
The resulting "spiney structures" are potentially mobile - but exhibit a powerful tendency to stay in one place.