Driven Front Propagation in 1D Spatially Periodic Media

F. Haudin, R. G. Elías, R. G. Rojas, U. Bortolozzo, M. G. Clerc, S. Residori

Research output: Contribution to journalArticlepeer-review

45 Scopus citations


We study front propagation in one-dimensional spatially periodic media. Based on an optical feedback with a spatially amplitude modulated beam, we set up a one-dimensional forced experiment in a nematic liquid crystal cell. By changing the forcing parameters, the front exhibits a pinning effect and oscillatory motion, which are confirmed by numerical simulations for the average liquid crystal tilt angle. A spatially forced dissipative φ4 model, derived at the onset of bistability, accounts qualitatively for the observed dynamics.

Original languageEnglish
Article number128003
JournalPhysical Review Letters
Issue number12
StatePublished - 18 Sep 2009


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