The electrodissolution of p-type silicon in a fluoride-containing electrolyte is a prominent electrochemical oscillator with a still unknown oscillation mechanism. In this article, we present a study of its dynamical states occurring in a wide range of the applied voltage–external resistance parameter plane. We provide evidence that the system possesses inherent birhythmicity, and thus at least two distinct feedback loops promoting oscillatory behavior. The two parameter regions in which the different limit cycles exist are separated by a band in which the dynamics exhibit bistability between two branches with different multimode oscillations. Following the states along one path through this bistable region, one observes that each branch undergoes a different transition to chaos, namely, a period doubling cascade and a quasiperiodic route with a torus-breakdown, respectively, making Si electrodissolution one of the few experimental systems exhibiting bichaoticity.
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April 2019
Research Article|
April 24 2019
Bichaoticity induced by inherent birhythmicity during the oscillatory electrodissolution of silicon
Anton Tosolini;
Anton Tosolini
a)
Nonequilibrium Chemical Physics, Department of Physics, Technical University of Munich
, 85747 Garching, Germany
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Maximilian Patzauer
;
Maximilian Patzauer
a)
Nonequilibrium Chemical Physics, Department of Physics, Technical University of Munich
, 85747 Garching, Germany
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Katharina Krischer
Katharina Krischer
b)
Nonequilibrium Chemical Physics, Department of Physics, Technical University of Munich
, 85747 Garching, Germany
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a)
Contributions: A. Tosolini and M. Patzauer contributed equally to this work.
Note: This paper is part of the Focus Issue, “Nonlinear Chemical Dynamics and Its Interdisciplinary Impact: Dedicated to Ken Showalter on the Occasion of his 70th Birthday.”
Chaos 29, 043127 (2019)
Article history
Received:
January 24 2019
Accepted:
April 04 2019
Citation
Anton Tosolini, Maximilian Patzauer, Katharina Krischer; Bichaoticity induced by inherent birhythmicity during the oscillatory electrodissolution of silicon. Chaos 1 April 2019; 29 (4): 043127. https://doi.org/10.1063/1.5090118
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