Front propagation into an unstable state in a forced medium: Experiments and theory

K. Alfaro-Bittner, C. Castillo-Pinto, M. G. Clerc, G. González-Cortés, R. G. Rojas, M. Wilson

Resultado de la investigación: Contribución a una revistaArtículorevisión exhaustiva

4 Citas (Scopus)

Resumen

Spatially forced systems can exhibit coexistence and a rich interface dynamics between manipulable states. We show here how the propagation speed of a front into an unstable state can be modified through periodic space forcing. Based on optical feedback, we set up a quasi-one-dimensional forced experiment in a liquid-crystal cell. When changing the forcing parameters, fronts exhibit a ratchet motion. Unexpectedly, the average speed of fronts decreases when the strength of the forcing increases. Close to molecular reorientation transition, an amplitude equation allows characterizing analytically and numerically the observed dynamics.

Idioma originalInglés
Número de artículo050201
PublicaciónPhysical Review E
Volumen98
N.º5
DOI
EstadoPublicada - 7 nov. 2018
Publicado de forma externa

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