Driven Front Propagation in 1D Spatially Periodic Media

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

doi:10.1103/PhysRevLett.103.128003

Driven Front Propagation in 1D Spatially Periodic Media

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

INSTITUTE OF PHYSICS

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45 Scopus citations

Abstract

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 language	English
Article number	128003
Journal	Physical Review Letters
Volume	103
Issue number	12
DOIs	https://doi.org/10.1103/PhysRevLett.103.128003
State	Published - 18 Sep 2009

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AU - Clerc, M. G.

AU - Residori, S.

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AB - 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.

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Driven Front Propagation in 1D Spatially Periodic Media

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