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(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Periodicity hubs and spirals in an electrochemical oscillator

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Nascimento, Melke A. [1] ; Varela, Hamilton [1, 2] ; Gallas, Jason A. C. [3, 4, 5, 6]
Total Authors: 3
[1] Univ Sao Paulo, Inst Chem Sao Carlos, BR-13560970 Sao Carlos, SP - Brazil
[2] GIST, Ertl Ctr Electrochem & Catalysis, Gwangju 500712 - South Korea
[3] Max Planck Inst Phys Komplexer Syst, D-01187 Dresden - Germany
[4] Univ Erlangen Nurnberg, Inst Multiscale Simulat, D-91052 Erlangen - Germany
[5] Univ Fed Paraiba, Dept Fis, BR-58051150 Joao Pessoa, Paraiba - Brazil
[6] Inst Altos Estudos Paraiba, BR-58051150 Joao Pessoa, Paraiba - Brazil
Total Affiliations: 6
Document type: Journal article
Source: Journal of Solid State Electrochemistry; v. 19, n. 11, p. 3287-3296, NOV 2015.
Web of Science Citations: 2

The control parameter space of lasers, electronic circuits, and biological oscillators was recently discovered to be riddled with remarkable points, called periodicity hubs, responsible for a wide-ranging self-organization of the systems. Although displaying features which resemble the organization seen in chemical models, periodicity hubs have not been detected in such models thus far. Here, we report numerical evidence that periodicity hubs and the infinite spirals of stable oscillations issuing from them exist profusely in an electrochemical oscillator model. For selected parameter ranges, we observe sequences of nonchaos-mediated mixed-mode oscillations. Chemical hubs open the possibility of studying experimentally the complex self-organization of stable oscillations and complicated phenomena of current interest. We report high-resolution stability diagrams providing reference charts to guide experimental work as well as stringent tests for the validity of the electrochemical oscillator model used. (AU)

FAPESP's process: 12/24152-1 - Complex kinetics in electrochemical systems: mechanisms, stoichiometric network analysis and numerical simulations
Grantee:Hamilton Brandão Varela de Albuquerque
Support type: Scholarships abroad - Research
FAPESP's process: 11/10982-0 - Spatio-temporal patterns in electrocatalysis: experiments, modeling and numerical simulations
Grantee:Melke Augusto do Nascimento
Support type: Scholarships in Brazil - Post-Doctorate
FAPESP's process: 13/16930-7 - Electrocatalysis V: electrocatalytic processes of chemical and electrical energy interconversion
Grantee:Edson Antonio Ticianelli
Support type: Research Projects - Thematic Grants
FAPESP's process: 12/24368-4 - Theoretical study of spatio-temporal behavior in electrochemical systems
Grantee:Melke Augusto do Nascimento
Support type: Scholarships abroad - Research Internship - Post-doctor