| Diffusion-driven pattern formation in ionic systems is significantly affected by the migrational flux caused by the local electric field resulting from the difference in the mobility of charged species. The arising additional flux may both enhance and lessen the instability of the base state, depending on the charge distribution among the components. Opposite charges on the slower diffusing autocatalyst and its reacting counterpart favor pattern formation and shift the onset of instability to smaller difference in the diffusion coefficients. Same charges have the opposite affect and may even lead to the complete stabilization of planar reaction fronts unstable in the neutral system. |
|