Lifshitz-Petrich Equation
This demonstration evolves a partial differential equation that shows the spontaneous formation of quasicrystalline patterns. The equation is a modified version of the Swift-Hohenberg model, which forms stripe patterns. The simulation is in a 64x64 system. The equation is
You can find out more about quasicrystals on the web site of Ron Lifshitz.
You can run the same equation in a system size twice as large (128 x 128) here.