title: Parameter space of experimental chaotic circuits with high-precision control parameters.
abstract: We report high-resolution measurements that experimentally confirm a spiral cascade structure and a scaling relationship of shrimps in the Chua's circuit. Circuits constructed using this component allow for a comprehensive characterization of the circuit behaviors through high resolution parameter spaces. To illustrate the power of our technological development for the creation and the study of chaotic circuits, we constructed a Chua circuit and study its high resolution parameter space. The reliability and stability of the designed component allowed us to obtain data for long periods of time (∼21 weeks), a data set from which an accurate estimation of Lyapunov exponents for the circuit characterization was possible. Moreover, this data, rigorously characterized by the Lyapunov exponents, allows us to reassure experimentally that the shrimps, stable islands embedded in a domain of chaos in the parameter spaces, can be observed in the laboratory. Finally, we confirm that their sizes decay exponentially with the period of the attractor, a result expected to be found in maps of the quadratic family.
authors: Instituto de Física e Química, Universidade Federal de Itajubá, Itajubá, MG, Brazil.
authors: Francisco F G
authors: FF
authors: de Sousa
authors: Instituto de Física e Química, Universidade Federal de Itajubá, Itajubá, MG, Brazil.
authors: Rero M
authors: RM
authors: Rubinger
authors: Universidade de São Paulo, São Paulo, SP, Brazil.
authors: José C
authors: JC
authors: Sartorelli
authors: Departamento de Física, Universidade do Estado de Santa Catarina, Joinville, SC, Brazil.
authors: Holokx A
authors: HA
authors: Albuquerque
authors: Institute of Complex Systems and Mathematical Biology, SUPA, University of Aberdeen, Aberdeen, United Kingdom.
authors: Murilo S
authors: MS
authors: Baptista
mesh_terms: D004581:Electronics; D017711:Nonlinear Dynamics; D010507:Periodicity; D011199:Potentiometry