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20 August 2020 Transition to spatiotemporal intermittency and defect turbulence in systems under translational coupling
Gregorio González-Cortés
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Proceedings Volume 11472, Liquid Crystals XXIV; 114720V (2020) https://doi.org/10.1117/12.2569306
Event: SPIE Organic Photonics + Electronics, 2020, Online Only
Abstract
Out of equilibrium systems under the influence of enough energy injection exhibit complex spa- tiotemporal behaviors. Based on a liquid crystal light valve experiment with translational optical feedback, we observe propagation, spatiotemporal intermittency, and defect turbulence of striped waves. A prototype model of pattern formation with translational coupling shows the same phe- nomenology. Close to the spatial instability, a local amplitude equation is derived. This amplitude equation allows us to reveal the origin and bifurcation diagram of the observed complex spatiotem- poral dynamics. Experimental observations have a quite fair agreement with theoretical findings.
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Gregorio González-Cortés "Transition to spatiotemporal intermittency and defect turbulence in systems under translational coupling", Proc. SPIE 11472, Liquid Crystals XXIV, 114720V (20 August 2020); https://doi.org/10.1117/12.2569306
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KEYWORDS
Turbulence
Light valves
Light wave propagation
Liquid crystals
Prototyping
Systems modeling
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