A novel current-controlled memristor-based chaotic circuit

Guo, Qi; Wang, Ning; Zhang, Guoshan

doi:10.1016/j.vlsi.2021.05.008

Cited by 15 publications

(4 citation statements)

References 45 publications

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“…In comparison to the voltage controlled memristors, the CCM have been relatively less exploited [4,5,[63][64][65]. Some ac impedance properties of CCM were described by Chua and Sung [5,66].…”

Section: General Memristor Models In Conducting Devicesmentioning

confidence: 99%

Current-controlled memristors: Resistive switching systems with negative capacitance and inverted hysteresis

Bisquert

2023

Phys. Rev. Applied

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Resistive switching in memristors is being amply investigated for different applications in non-volatile memory (RRAM), neuromorphic computing and programmable logic devices. Memristors are conducting devices in which the conductance depends on one or more slow internal state variables, and they exhibit strongly nonlinear properties and intense memory effects. Here we address the characterization of current-controlled memristors by small perturbation frequencyresolved impedance techniques. We show that the equivalent circuit obtained at different stationary points provides essential information of the dynamical behaviour in voltage cycling and transient response to a square perturbation. The general method enables the analysis of stability and hysteresis in current-voltage curves. The current-controlled memristor produces very naturally a negative capacitance effect, and we review several devices in the literature, including discharge tubes and metal-oxide memristors, to expose the deep connections between the sign of the capacitance and the type of hysteresis.

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Section: General Memristor Models In Conducting Devicesmentioning

confidence: 99%

Current-controlled memristors: Resistive switching systems with negative capacitance and inverted hysteresis

Bisquert

2023

Phys. Rev. Applied

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“…This work focuses on the current-controlled memristor system, which is defined by Equation ( 5) below [34].…”

Section: Memristor Modelmentioning

confidence: 99%

High-Security Image Encryption Based on a Novel Simple Fractional-Order Memristive Chaotic System with a Single Unstable Equilibrium Point

et al. 2021

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Fractional-order chaotic systems have more complex dynamics than integer-order chaotic systems. Thus, investigating fractional chaotic systems for the creation of image cryptosystems has been popular recently. In this article, a fractional-order memristor has been developed, tested, numerically analyzed, electronically realized, and digitally implemented. Consequently, a novel simple three-dimensional (3D) fractional-order memristive chaotic system with a single unstable equilibrium point is proposed based on this memristor. This fractional-order memristor is connected in parallel with a parallel capacitor and inductor for constructing the novel fractional-order memristive chaotic system. The system’s nonlinear dynamic characteristics have been studied both analytically and numerically. To demonstrate the chaos behavior in this new system, various methods such as equilibrium points, phase portraits of chaotic attractor, bifurcation diagrams, and Lyapunov exponent are investigated. Furthermore, the proposed fractional-order memristive chaotic system was implemented using a microcontroller (Arduino Due) to demonstrate its digital applicability in real-world applications. Then, in the application field of these systems, based on the chaotic behavior of the memristive model, an encryption approach is applied for grayscale original image encryption. To increase the encryption algorithm pirate anti-attack robustness, every pixel value is included in the secret key. The state variable’s initial conditions, the parameters, and the fractional-order derivative values of the memristive chaotic system are used for contracting the keyspace of that applied cryptosystem. In order to prove the security strength of the employed encryption approach, the cryptanalysis metric tests are shown in detail through histogram analysis, keyspace analysis, key sensitivity, correlation coefficients, entropy analysis, time efficiency analysis, and comparisons with the same fieldwork. Finally, images with different sizes have been encrypted and decrypted, in order to verify the capability of the employed encryption approach for encrypting different sizes of images. The common cryptanalysis metrics values are obtained as keyspace = 2648, NPCR = 0.99866, UACI = 0.49963, H(s) = 7.9993, and time efficiency = 0.3 s. The obtained numerical simulation results and the security metrics investigations demonstrate the accuracy, high-level security, and time efficiency of the used cryptosystem which exhibits high robustness against different types of pirate attacks.

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“…Apart from the above-mentioned circuits with common nonlinear elements, the fourth dynamic circuit element, i.e. memristor, provides a new way to design simple chaotic circuits [8][9][10][11]. Complex dynamical characteristics of chaos make it convenient for chaos-based applications, especially in the field of image encryptions [12][13][14][15].…”

Section: Introductionmentioning

confidence: 99%

Dynamics of a simple third-order autonomous MLC circuit

Zhang

2023

Phys. Scr.

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This paper reports a new simple third-order memristive circuit only containing three elements of inductor, capacitor, and active generalized memristor, from which rich dynamical behaviors are generated. With a dimensionless system model, the performed analyses show that the proposed memristive circuit only has an unstable equilibrium point of saddle-focus-type. The antimonotonicity makes the system exhibits coexisting chaotic and periodic bubbling single-parameter bifurcation routes. Moreover, the quasiperiodic torus, various bursting and beat phenomena with chaotic and periodic oscillations are demonstrated by numerical simulations. The analog circuit implementations are further presented to show the phase portraits and time sequences of the generated attractors.

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A novel current-controlled memristor-based chaotic circuit

Cited by 15 publications

References 45 publications

Current-controlled memristors: Resistive switching systems with negative capacitance and inverted hysteresis

Current-controlled memristors: Resistive switching systems with negative capacitance and inverted hysteresis

High-Security Image Encryption Based on a Novel Simple Fractional-Order Memristive Chaotic System with a Single Unstable Equilibrium Point

Dynamics of a simple third-order autonomous MLC circuit

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