par D'Hernoncourt, Jessica 
;De Wit, Anne ;Merkin, J H
Référence The Journal of Chemical Physics, 126, page (104504)
Publication Publié, 2007
;De Wit, Anne ;Merkin, J HRéférence The Journal of Chemical Physics, 126, page (104504)
Publication Publié, 2007
Article révisé par les pairs
| Résumé : | An electric field applied in the direction of propagation of a chemical reaction-diffusion front can affect the stability of this front with regard to diffusive instabilities. The influence of an applied constant electric field is investigated by a linear stability analysis and by nonlinear simulations of a simple chemical system based on the cubic autocatalytic reaction A-+2B--->3B-. The diffusional stability of the front is seen to depend on the intensity E and sign of the applied field, and D, the ratio diffusion coefficients of the reactant species. Depending on E, the front can become more or less diffusively unstable for a given value of D. Above a critical value of E, which depends on D, electrophoretic separation of the two fronts is observed. |
