par Walgraef, Daniel 
Référence Journal of statistical physics, 64, 5-6, page (969-980)
Publication Publié, 1991-09
Référence Journal of statistical physics, 64, 5-6, page (969-980)
Publication Publié, 1991-09
Article révisé par les pairs
| Résumé : | The effect of temporal modulations on wave patterns induced by spatiotemporal Hopf bifurcations is discussed in the framework of amplitude equations of the Ginzburg-Landau type. The approach is well adapted to the study of pattern formation in liquid crystals which, on the other hand, provide a class of easily forced systems. A few examples, related to experimental realizations, are presented. In particular, it is shown how pure temporal modulations may stabilize standing waves or two-dimensional wave patterns in regimes where they are otherwise unstable. The properties of the defects which are associated to these structures are also discussed. © 1991 Plenum Publishing Corporation. |
