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Effect of electric field on Turing patterns in a microemulsion

Autor(es) y otros:
Carballido Landeira, JorgeAutoridad Uniovi; Taboada, Pablo; P. Muñuzuri, Alberto
Palabra(s) clave:

Física no Lineal

Dinámica no lineal de sistemas activos

Estructuras espacio-temporales

Bifurcación Turing-Hopf

Fecha de publicación:
2012
Editorial:

RSC

Versión del editor:
https://doi.org/10.1039/C2SM07032D
Resumen:

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.

URI:
https://hdl.handle.net/10651/71113
ISSN:
1744-6848
DOI:
10.1039/c2sm07032d
Patrocinado por:

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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