Effect of electric field on Turing patterns in a microemulsion
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Física no Lineal
Dinámica no lineal de sistemas activos
Estructuras espacio-temporales
Bifurcación Turing-Hopf
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RSC
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Turing structures are studied in the Belousov–Zhabotinsky (BZ) reaction confined in an AOT microemulsion and exposed to an external electric field. The structures change their dynamics influenced by the induced flow from an initial stationary state to a time dependent behavior. By means of dimensionless analysis, using the Pi Buckingham theorem, we obtain a linear correlation between the dimensionless factors associated with the difference of voltage and the pattern induced velocity. The experimental results were complemented with numerical simulations of a two variable model that incorporates the migration of the ionic compounds due to the applied electric field.
Turing structures are studied in the Belousov–Zhabotinsky (BZ) reaction confined in an AOT microemulsion and exposed to an external electric field. The structures change their dynamics influenced by the induced flow from an initial stationary state to a time dependent behavior. By means of dimensionless analysis, using the Pi Buckingham theorem, we obtain a linear correlation between the dimensionless factors associated with the difference of voltage and the pattern induced velocity. The experimental results were complemented with numerical simulations of a two variable model that incorporates the migration of the ionic compounds due to the applied electric field.
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The authors thank Prof. V. K. Vanag for helpful discussions. Authors also thank MICINN by funding through research projects MAT2007-61067, FIS2007-64698 and FIS2010-21023 and Xunta de Galicia through projects INCITE09206020PR and PGIDIT06PXIB206169PR. J.C.L. was founded by the Spanish Minister of Science for a FPI grant.
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