Chemical reaction- diffusion systems

Spatially extended chemical reactions are systems where the observation of linear instabilities and different types of pattern formation in non-linear reaction-diffusion equations is well-controlled. The combination of reactions with different instabilities together with advection may produce new pattern formation mechanisms. It permits the study of multi-scale problems where two instabilities appear simultaneously in a co-dimensional point at different scales. On the other hand, chemical waves in extended chemical excitable media, e.g. the Belousov-Zhabotinsky reaction or catalytic oxidation in metal surfaces, can reproduce some of the particularities of electrical wave propagation in cardiac tissue


Related Publications


Spatio-temporal dynamics induced by competing instabilities in two asymmetrically
coupled nonlinear evolution equations
D. Schüler, S. Alonso, A. Torcini and M. Bär, Chaos 24, 043142 (2014).

Traveling waves and global oscillations triggered by attractive molecular interactions
in an excitable system
K. John, S. Alonso, and M. Bär, Phys. Rev. E 90, 052913 (2014).


Control of reaction-diffusion patterns by asymmetric nonlocal coupling
J. Siebert, S. Alonso, M. Bär, and E. Schöll, Phys. Rev. E 89, 052909 (2014).


Twists of opposite handedness on a scroll wave.
P. Dähmlow, S. Alonso, M. Bär and M. J. B. Hauser, Phys. Rev. Lett. 110, 234102 (2013).


Surfactant-induced gradients in the three-dimensional Belousov-Zhabotinsky reaction.
D. Kupitz, S. Alonso, M. Bär and M. J. B. Hauser, Phys. Rev. E 84, 056210 (2011).


Complex wave patterns in an effective reaction-diffusion model for chemical reactions in microemulsions.
S. Alonso, K. John and M. Bär, J. Chem. Phys. 134, 094117 (2011).


Effects of external global noise on the catalytic CO oxidation on Pt(110).
P. S. Bodega, S. Alonso and H. H. Rotermund. J. Chem. Phys. 130, 084704 (2009).


Differential susceptibity to noise of mixed Turing and Hopf modes in a photosensitive
chemical medium.
S. Alonso, D. G. Míguez and F. Sagués, Europhys. Lett. 81, 30006 (2008).


Experimental Evidence of Localized Oscillations in the Photosensitive Chlorine
Dioxide-Iodine-Malonic Acid Reaction.
D. G. Míguez, S. Alonso, A. P. Muñuzuri and F. Sagués. Phys. Rev. Lett. 97, 178301 (2006).