Speaker
Description
Many natural systems including the oscillating Belousov—Zhabotinsky chemical reaction and electrical signalling in the heart can be effectively described by a set of coupled reaction-diffusion equations. It is well known that in a constant external field (e.g. electrical field), spiral waves start drifting.
Recently, we showed by numerical and analytical methods that an electrical field that rotates at a frequency close to the natural rotation frequency of the spiral wave can phase-lock the spiral wave, forcing it to rotate at a new frequency. In two spatial dimensions, this technique enables selection of a unique spiral wave frequency. In three dimensions, the rotating external field can restabilise scroll wave turbulence induced by negative filament tension.
