Ricardo Sevilla-Escoboza

Ricardo Sevilla-Escoboza
University of Guadalajara | UDG · Departamento de Ciencias Exactas y Tecnologícas (CULAGOS)

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About

63
Publications
10,355
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1,131
Citations
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February 2010 - present
University of Guadalajara
Position
  • Professor (Full)

Publications

Publications (63)
Article
In this work, we show that the superposition of transverse acoustic (TA) harmonic phonons in the longitudinal optical overtone (2LO) phonon of the resonant Raman spectrum of CdTe is considerably reduced by slightly cooling the substrate. This effect not only modifies the line shape of the resonant Raman spectrum around the 2LO mode, but also signif...
Article
Full-text available
The obtainment of a dynamical logic gate (DLG), which is a device capable of implementing several logic functions using the same model, has been one of the goals of the scientific community. Dynamical systems, specifically those that display chaotic behavior, have been widely used to emulate different logic gates which are the basis of general-purp...
Article
Silica nanoparticles (SiO2) were synthesized via thermocavitation. The high pressures and temperature generated after implosion of the cavitation bubble improved the conditions for nanoparticles synthesis. Solutions of 3- (trietoxysilyl) propyl isocyanate (TESPI) and a natural dye (Hibiscus sabdariffa L.), extracted in ethanol, were used as startin...
Article
We investigate, numerically and experimentally, the phenomenon of dynamical consistency in a network of nonlinear oscillators. Dynamical consistency is defined as the ability of a dynamical system to respond in the same way when it is perturbed by the same external signal. This property, fulfilled by specific dynamical systems, has been mainly stud...
Article
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Nowadays, chaotic systems are attracting considerable attention due to their special features. The aim of this paper is to study a four-dimensional system that lacks any equilibria. Also, this non-equilibrium system has hidden attractors. Dynamical behaviors of the system have been investigated using well-known numerical simulations and analyses su...
Article
In this work, we found that the electron-phonon interaction (EPI) is dependent on the surface roughness. Simulations of Resonance Raman Spectroscopy (RRS) spectra, show that the Fano asymmetry parameter q, decreases as the Mean Surface Roughness (MSR) increases. They also make it clear, that the magnitude of the EPI strength increases with increasi...
Article
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The path towards synchronization of an ensemble of dynamical units goes through a series of transitions determined by the dynamics and the structure of the connections network. In some systems on the verge of complete synchronization has been observed intermittent synchronization, a time-dependent state where full synchronization alternates with no...
Article
Full-text available
The interplay between structure and function is critical in the understanding of complex systems, their dynamics and their behavior. We investigated the interplay between structural and functional networks by means of the differential identifiability framework, which here quantifies the ability of identifying a particular network structure based on...
Article
An analysis of thermocavitation in a nonlinear optical material (natural dye, ethanolic extract of Hibiscus Sabdariffa) is presented. Thermocavitation consists of generating bubbles using a highly focused CW laser beam in a highly absorbent liquid solution. The thermocavitation frequency can be modified by varying the incident beam power or the abs...
Article
Full-text available
We quantified the spatial and temporal entropy related to football teams and their players by means of a pass-based interaction. First, we calculated the spatial entropy associated to the positions of all passes made by a football team during a match, obtaining a spatial entropy ranking of Spanish teams during the 2017/2018 season. Second, we inves...
Article
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The analysis of the interplay between structural and functional networks require experiments where both the specific structure of the connections between nodes and the time series of the underlying dynamical units are known at the same time. However, real datasets typically contain only one of the two ways (structural or functional) a network can b...
Conference Paper
In this work a control system is presented for the autonomous navigation of vehicles using a monocular vision system to detect reference patterns in a controlled environment. This control system is based on the data extraction from the vision system camera feed to generate position vectors, which enable the localization of the vehicle in the enviro...
Conference Paper
In the next work an automatic fringe projection system with a mobile camera has been proposed. A set of experimental images in order to scanning all the set positions in an automated rail are obtained. In each position, four profileometric images shifted pi/2 were taken and use the phase shift of 4 steps algorithm to obtain the wrapped phase. A Rad...
Article
We introduce Ordinal Synchronization (OS) as a new measure to quantify synchronization between dynamical systems. OS is calculated from the extraction of the ordinal patterns related to two time series, their transformation into D-dimensional ordinal vectors and the adequate quantification of their alignment. OS provides a fast and robust-to noise...
Article
The third order systems are very attractive because they present a rich dynamics and can be applied in secure communications, cryptography and so on. A special class of this kind of systems is the so-called jerk systems. This type of systems is very interesting in the field of research, because of its simplicity and ease of construction. In this wo...
Article
Full-text available
We explore the relation between the topological relevance of a node in a complex network and the individual dynamics it exhibits. When the system is weakly coupled, the effect of the coupling strength against the dynamical complexity of the nodes is found to be a function of their topological roles, with nodes of higher degree displaying lower leve...
Article
Full-text available
In this work, we present the simulation results of a passively Q-switched Nd: YVO4/Cr:YAG laser model with pump modulation for applications in laser stabilization control contemplating different harmonic regimes. We study in detail the complex dynamics by varying the values of two control parameters: pump power and external frequency. By using bifu...
Preprint
Full-text available
We introduce Ordinal Synchronization ($OS$) as a new measure to quantify synchronization between dynamical systems. $OS$ is calculated from the extraction of the ordinal patterns related to two time series, their transformation into $D$-dimensional ordinal vectors and the adequate quantification of their alignment. $OS$ provides a fast and robust-t...
Preprint
Full-text available
We explore the relation between the topological relevance of a node in a complex network and the individual dynamics it exhibits. When the system is weakly coupled, the effect of the coupling strength against the dynamical complexity of the nodes is found to be a function of their topological role, with nodes of higher degree displaying lower level...
Conference Paper
The evolution of edge detectors is carried out using different techniques from the spatial filters to hybrid methods, these methods offers some advantages in function of the possible application, despite the issue remained under consideration. Therefore, in this work the development of a hybrid edge detector for the application of fill regions, bas...
Article
Full-text available
Relay (or remote) synchronization between two not directly connected oscillators in a network is an important feature allowing distant coordination. In this work, we report a systematic study of this phenomenon in multiplex networks, where inter-layer synchronization occurs between distant layers mediated by a relay layer that acts as a transmitter...
Conference Paper
Full-text available
En este trabajo se presenta la automatización que se realizó para el análisis del circuito electrónico que representa el modelo neuronal de Hindmarsh-Rose utilizando al instrumento virtual basado en LabVIEW 2012. Se presenta el diseño, parámetros y configuraciones tanto del instrumento virtual como del circuito electrónico neuronal. El instrumento...
Article
Full-text available
We propose the use of error-feedback control for converting a multistable system into a monostable one. The method is tested with a multistable erbium-doped fiber laser which exhibits the coexistence of four periodic orbits. A desired orbit is selected by an external harmonic modulation which frequency is equal to the frequency of one of the coexis...
Article
We study synchronization of two chaotic oscillators coupled with time delay in a master-slave configuration and with delayed positive feedback in the slave oscillator which acts as memory. The dynamics of the slave oscillator is analyzed with bifurcation diagrams of the peak value of the system variable with respect to the coupling and feedback str...
Article
Full-text available
Inter-layer synchronization is a dynamical state occurring in multi-layer networks composed of identical nodes. The state corresponds to have all layers synchronized, with nodes in each layer which do not necessarily evolve in unison. So far, the study of such a solution has been restricted to the case in which all layers had an identical connectiv...
Article
Full-text available
We investigate the existence of an optimal interplay between the natural frequencies of a group chaotic oscillators and the topological properties of the network they are embedded in. We identify the conditions for achieving phase synchronization in the most effective way, i.e., with the lowest possible coupling strength. Specifically, we show by m...
Article
Full-text available
Abstract We provide the topological structure of a series of N=28 Rössler chaotic oscillators diffusively coupled through one of its variables. The dynamics of the y variable describing the evolution of the individual nodes of the network are given for a wide range of coupling strengths. Datasets capture the transition from the unsynchronized behav...
Chapter
Recently, some studies have started to show how global structural properties or dynamical processes such as synchronization, robustness, cooperation, transport or epidemic spreading change dramatically when considering a network of networks, as opposed to networks in isolation. In this chapter we examine the effects that the particular way in which...
Article
Full-text available
Inter-layer synchronization is a distinctive process of multiplex networks whereby each node in a given layer undergoes a synchronous evolution with all its replicas in other layers, irrespective of whether or not it is synchronized with the other units of the same layer. We analytically derive the necessary conditions for the existence and stabili...
Article
Full-text available
Synchronization processes in populations of identical networked oscillators are in the focus of intense studies in physical, biological, technological and social systems. Here we analyze the stability of the synchronization of a network of oscillators coupled through different variables. Under the assumption of an equal topology of connections for...
Article
Full-text available
We propose a robust method that allows a periodic or a chaotic multi-stable system to be transformed to a monostable system at an orbit with dominant frequency of any of the coexisting attractors. Our approach implies the selection of a particular attractor by periodic external modulation with frequency close to the dominant frequency in the power...
Article
Maximally synchronizable networks (MSNs) are acyclic directed networks that maximize synchronizability. In this paper, we investigate the feasibility of transforming networks of coupled oscillators into their corresponding MSNs. By tuning the weights of any given network so as to reach the lowest possible eigenratio $\lambda_N/\lambda_2$, the synch...
Article
Full-text available
A system composed by interacting dynamical elements can be represented by a network, where the nodes represent the elements that constitute the system, and the links account for their interactions, which arise due to a variety of mechanisms, and which are often unknown. A popular method for inferring the system connectivity (i.e., the set of links...
Article
Full-text available
We report on the experimental observation of coherence enhancement of noise-induced intermittency in a semiconductor laser subject to optical injection from another laser at the boundary of the frequency-locking regime. The intermittent switches between locked and unlocked states occur more regularly at a certain value of the injecting laser pump c...
Article
Full-text available
In this paper we present the design and configuration of virtual interface for the purpose of automate the acquisition and analysis of digital signals from the response of an erbium-doped fiber laser (EDFL) through a GPIB port using the National Instruments Software, LabVIEW. We automated an Aeroflex 3250 Series Spectrum Analyzer, a Tektronix AFG30...
Article
Full-text available
We propose a methodology to analyze synchronization in an ensemble of diffusively coupled multistable systems. First, we study how two bidirectionally coupled multistable oscillators synchronize and demonstrate the high complexity of the basins of attraction of coexisting synchronous states. Then, we propose the use of the Master Stability Function...
Article
Full-text available
We experimentally studied dynamics of a dual-cavity Nd:YAG laser with second harmonic generation in one of the cavities and loss modulation in another cavity. Dependent on the frequency of harmonic modulation of the infrared light, we observed the coexistence of different correlated and uncorrelated regimes of the infrared and green outputs from tw...
Article
Full-text available
We implement a dynamic logic gate which consists of three elements: a chaotic fiber laser, a threshold controller and the output of the logic gate. The output signal of the fiber laser is sent to the logic gate input as to the threshold controller; threshold controller output signal is sent at the entrance of the logic gate and also feedback to the...
Conference Paper
Full-text available
We implemented a laser synapse based on a diode-pumped erbium-doped fiber laser. The laser is driven by a presynaptic FitzHung-Nagumo electronic neuron and its intensity converted to the electric signal by a photodetector serves as an input signal for a postsynaptic FitzHung-Nagumo electronic neuron. The laser synapse provides very high flexibility...
Article
Full-text available
In this Letter we identify the general rules that determine the synchronization properties of interconnected networks. We study analytically, numerically and experimentally how the degree of the nodes through which two networks are connected influences the ability of the whole system to synchronize. We show that connecting the high-degree (low-degr...
Article
Full-text available
We fabricate a biometric laser fiber synaptic sensor to transmit information from one neuron cell to the other by an optical way. The optical synapse is constructed on the base of an erbium-doped fiber laser, whose pumped diode current is driven by a pre-synaptic FitzHugh-Nagumo electronic neuron, and the laser output controls a post-synaptic FitzH...
Article
Full-text available
Synchronization of chaotic oscillators has an important application in cryptography. When two identical oscillators are coupled, they can be completely synchronized and the chaotic output of the transmit- ter oscillator can be used to mask a message. Although the oscilla- tor parameters are usually used as secret keys, the sensitivity of such crypt...
Article
Full-text available
We implement an algorithm to reproduce the behavior of a dynamic logic gate which consists of three elements: a fiber laser in chaotic regime, a threshold controller and the output of the logic gate. The output signal of the fiber laser is sent to the logic gate input as to the threshold controller; threshold controller output signal is sent at the...
Article
Full-text available
We study a physiologically realistic implementation of internal stochasticity in a four dimensional Hodgkin-Huxley (HH) type model of cold receptors. We show that in a determin-istically tonic-firing regime, changing the parameters can drive the neuron into a state of complex bursting behavior. An explanation of the mechanism behind this effect is...
Article
Clear evidence of rogue waves in a multistable system is revealed with an erbium-doped fiber laser driven by harmonic pump modulation (Pisarchik, Jaimes-Reátegui, Sevilla-Escoboza, Huerta-Cuellar & Taki, 2011). We demonstrate numerically and experimentally that a low-pass noise filtering can control the probability for the appearance of a particula...
Article
Full-text available
We demonstrate the existence of generalized synchronization in systems that act as mediators between two dynamical units that, in turn, show complete synchronization with each other. These are the so-called relay systems. Specifically, we analyze the Lyapunov spectrum of the full system to elucidate when complete and generalized synchronization app...
Article
Full-text available
In the last decade, complex networks have widely been applied to the study of many natural and man-made systems, and to the extraction of meaningful information from the interaction structures created by genes and proteins. Nevertheless, less attention has been devoted to metabonomics, due to the lack of a natural network representation of spectral...
Article
In the last decade, complex networks have widely been applied to the study of many natural and man-made systems, and to the extraction of meaningful information from the interaction structures created by genes and proteins. Nevertheless, less attention has been devoted to metabonomics, due to the lack of a natural network representation of spectral...
Article
Full-text available
Clear evidence of rogue waves in a multistable system is revealed with an erbium-doped fiber laser driven by harmonic pump modulation (Pisarchik, Jaimes-Reátegui, Sevilla-Escoboza, Huerta-Cuellar & Taki, 2011). We demonstrate numerically and experimentally that a low-pass noise filtering can control the probability for the appearance of a particula...
Article
We propose and implement experimentally an opto-electronic chaotic communication system based on chaos synchronization, which uses two channels: the electronic channel for synchronization and the optical channel for information transmission. Both the transmitter and the receiver contain identical chaotic Rössler-like electronic circuits and identic...
Article
Full-text available
In our recent Letter [Phys. Rev. Lett. 107, 274101 (2011)], we demonstrated that slow random perturbations of a system parameter were responsible for the emergence of rogue waves in a fiber laser with coexisting attractors. In this paper we investigate how the probability of a particular state to appear in multistate intermittency can be controlled...
Conference Paper
Full-text available
An adaptive discrete-time regulator for a Furuta pendulum is presented. A high order neural network in discrete-time is used to identify the plant behavior; this network is trained with an extended Kalman filter where the associated state and measurement noises discrete-time covariance matrices are calculated with stochastic estimation. Then, the d...
Article
Full-text available
Critical phenomena in complex networks, and the emergence of dynamical abrupt transitions in the macroscopic state of the system are currently a subject of the outmost interest. We report evidence of an explosive phase synchronization in networks of chaotic units. Namely, by means of both extensive simulations of networks made up of chaotic units,...
Article
Full-text available
Clear evidence of rogue waves in a multistable system is revealed by experiments with an erbium-doped fiber laser driven by harmonic pump modulation. The mechanism for the rogue wave formation lies in the interplay of stochastic processes with multistable deterministic dynamics. Low-frequency noise applied to a diode pump current induces rare jumps...
Article
Full-text available
Secure optical communication has been realized with two semiconductor lasers driven by two chaotic Rössler oscillators. The communication system contains two channels: optical and electronic; the information is transmitted through an optical fiber, while the Rössler oscillators are synchronized via electronic channel. One of the outputs of the Röss...
Conference Paper
Neuronal connection is one of the important problems in information biology and neuro-engineering for understanding brain functions and efficient bio-robotics. In particular, a design of optical sensors of oscillatory neurons spiking sequences is one of the hot topics in modern neuroscience. In this work we propose an optical synaptic sensor based...