Complexity of globally coupled chaotic electrochemical oscillators

文献情報

出版日 2000-07-31

DOI 10.1039/B003812L

インパクトファクター 3.676

著者

István Z. Kiss, Wen Wang, John L. Hudson

原文を見る

要旨

Interactions among small sets of two to eight nickel electrodes undergoing chaotic electrodissolution in sulfuric acid were studied. A single oscillator under these conditions exhibits low-dimensional chaotic behavior. Global coupling among the electrodes was added with the use of external resistors in a manner such that the strength of the coupling could be varied while the other parameters of the system remained constant. Such global coupling is of course equivalent to an appropriate local coupling for the two-electrode system and even for a three-electrode system if arranged in a ring. We investigate the changes in complexities of both the individual oscillators and of the total current as functions of coupling strength and of array size. The dynamics of the individual oscillators are almost identical to those of the single oscillator at added coupling strengths of zero (where the oscillators are almost independent) and at maximum coupling strength (where they are synchronized). There are two trends (with exceptions) with changing coupling strength. (1) The complexity (information dimension) of the individual currents has a maximum at intermediate values of the coupling strength, i.e., at conditions in which interactions occur but where the coupling is not strong enough to produce synchronization. (2) An increase in global coupling decreases the complexity of the total current. The general trends with coupling strength are interrupted by clustering that occurs with the four and eight electrode arrays. Cluster configurations for the larger array exhibiting both chaotic (3,5 cluster) and periodic (4,4 cluster) dynamics were observed.

掲載誌

Physical Chemistry Chemical Physics

CiteScore: 5.5

自己引用率: 10.3%

年間論文数: 3036

Physical Chemistry Chemical Physics (PCCP) is an international journal co-owned by 19 physical chemistry and physics societies from around the world. This journal publishes original, cutting-edge research in physical chemistry, chemical physics and biophysical chemistry. To be suitable for publication in PCCP, articles must include significant innovation and/or insight into physical chemistry; this is the most important criterion that reviewers and Editors will judge against when evaluating submissions. The journal has a broad scope and welcomes contributions spanning experiment, theory, computation and data science. Topical coverage includes spectroscopy, dynamics, kinetics, statistical mechanics, thermodynamics, electrochemistry, catalysis, surface science, quantum mechanics, quantum computing and machine learning. Interdisciplinary research areas such as polymers and soft matter, materials, nanoscience, energy, surfaces/interfaces, and biophysical chemistry are welcomed if they demonstrate significant innovation and/or insight into physical chemistry. Joined experimental/theoretical studies are particularly appreciated when complementary and based on up-to-date approaches.