scholarly journals Pinched hysteresis loops in non‐linear resonators

2020 ◽  
Author(s):  
Ahmed S. Elwakil ◽  
Mohammed E. Fouda ◽  
Sohaib Majzoub ◽  
Ahmed G. Radwan
Keyword(s):  
Hysteresis Loops ◽  
Non Linear ◽  
Pinched Hysteresis

scholarly journals Questioning the aloe vera plant and apple memristors

2019 ◽  
Vol 10 (1) ◽  
pp. 83-89 ◽  
Author(s):  
Oliver Pabst ◽  
Steinar Andersen ◽  
Soban Ali Bhatti ◽  
Jørgen Brevik ◽  
Simen Anthony Fallaas ◽  
...  
Keyword(s):  
Electrical Properties ◽  
Aloe Vera ◽  
Hysteresis Loops ◽  
Electrical Current ◽  
Electrochemical Reactions ◽  
Electrical Measurements ◽  
State Dependent ◽  
Polarization Impedance ◽  
Non Linear ◽  
Pinched Hysteresis

Abstract Non-linear electrical properties of a (biological) tissue can be revealed by non-linear electrical measurements, which means that the applied stimulus itself affects the measurement. If resulting voltage–current plots exhibit pinched hysteresis loops, the underlying tissue may be classified as a memristor, a state dependent resistor. The aloe vera plant and apples have been found to be memristors. However, polarization processes on the electrodes are also non-linear and may affect the measurement. Apples and aloe vera conduct electrical current very well and it is likely that the recordings are actually dominated by the polarization impedance of the electrodes. Here, we study the non-linear properties of aloe vera and apples with two different measurement electrode types. Furthermore, we measured also on the extracted liquids from one aloe vera leaf and one apple, leading to similar results. We concluded, unlike previous studies on these subjects, that the memristive properties originate from electrochemical reactions on the electrodes rather than the apples or aloe vera themselves.

Non-linear dynamics of the Villari effect in the presence of a non-homogeneous magnetic field

2018 ◽  
Vol 233 (4) ◽  
pp. 431-440
Author(s):  
Andrzej Rysak ◽  
Magdalena Gregorczyk
Keyword(s):  
Magnetic Field ◽  
Time Series ◽  
Hysteresis Loops ◽  
Bias Field ◽  
Homogeneous Magnetic Field ◽  
Operating Conditions ◽  
Bias Magnetic Field ◽  
Linear Dynamics ◽  
Non Linear ◽  
Magnetostrictive Devices

Investigations of systems with an active magnetostrictive element generally assume the presence of an external homogeneous bias magnetic field. This article, however, presents the results of a study investigating a bimorph magnetostrictive-aluminium beam vibrating in a non-homogeneous bias field. By comparing results obtained under different operating conditions of the system, the combined effect of the non-linear beam stress and the non-homogeneous external magnetic field on the dynamics of the Villari phenomenon is determined. The preliminary results prove that the application of non-linear magnetic fields to the magnetostrictive devices ensures the extension of energy harvesting bandwidth of these devices and can be used to improve their control possibilities. A study of time series and hysteresis loops provides more detailed information about the non-linear magnetization and dynamics of the system.

scholarly journals CMOS Realization of All-Positive Pinched Hysteresis Loops

Complexity ◽  
2017 ◽  
Vol 2017 ◽  
pp. 1-15 ◽  
Author(s):  
B. J. Maundy ◽  
A. S. Elwakil ◽  
C. Psychalinos
Keyword(s):  
Hysteresis Loop ◽  
Detailed Analysis ◽  
Hysteresis Loops ◽  
Nonlinear Circuits ◽  
Experimental Results ◽  
First Order ◽  
Pinched Hysteresis Loop ◽  
A Charge ◽  
Pinched Hysteresis ◽  
Nmos Transistors

Two novel nonlinear circuits that exhibit an all-positive pinched hysteresis loop are proposed. These circuits employ two NMOS transistors, one of which operates in its triode region, in addition to two first-order filter sections. We show the equivalency to a charge-controlled resistance (memristance) in a decremental state via detailed analysis. Simulation and experimental results verify the proposed theory.

New Grounded and Floating Memristor-Less Meminductor Emulators Using VDTA and CDBA

2021 ◽  
pp. 2150283
Author(s):  
Nisha Yadav ◽  
Shireesh Kumar Rai ◽  
Rishikesh Pandey
Keyword(s):  
Adaptive Learning ◽  
Hysteresis Loops ◽  
Cmos Technology ◽  
Chaotic Oscillator ◽  
Simulation Tool ◽  
Analog Multiplier ◽  
Transconductance Amplifier ◽  
Simulation Results ◽  
Pinched Hysteresis

In this paper, new memristor-less meminductor emulators have been proposed using voltage differencing transconductance amplifier (VDTA), current differencing buffered amplifier (CDBA) and a grounded capacitor. The proposed decremental/incremental meminductor emulators have been realized in both grounded and floating types of configurations. In the proposed meminductor emulators, analog multiplier, memristor and passive resistors are not used which result in simpler configurations. The pinched hysteresis loops are maintained up to 2[Formula: see text]MHz for both decremental and incremental configurations of meminductor emulators. The behaviors of decremental and incremental meminductor emulators have been analyzed after applying input pulses. The obtained results verify the performances as decremental and incremental meminductor emulators. The simulation results have been obtained using Mentor Graphics Eldo simulation tool with 180[Formula: see text]nm CMOS technology parameters. To verify the performances of the proposed meminductor emulators, adaptive learning circuit and chaotic oscillator have been designed. The performances of the proposed meminductor emulators are compared with other meminductor emulators reported in the literature.

A Novel Bipolar Photon-Controlled Generalized Memristor Based on Avalanche Photodiode

2020 ◽  
pp. 2150090
Author(s):  
Jianxiu Hao ◽  
Xiangliang Jin ◽  
Bo Peng
Keyword(s):  
Topological Structure ◽  
Hysteresis Loops ◽  
Avalanche Photodiode ◽  
Circuit Model ◽  
Traditional Model ◽  
Circuit Simulator ◽  
Dynamical Characteristics ◽  
Spice Model ◽  
Pinched Hysteresis Loop ◽  
Pinched Hysteresis

A novel bipolar photon-controlled generalized memristor model with an avalanche photodiode (APD) passive quenching circuit is presented in this paper. The SPICE model of the circuit is established and its fingerprints are analyzed by the pinched hysteresis loops with different bipolar periodic stimuli. The dynamical characteristics of the proposed circuit model are investigated both theoretically and simulatively. The results verified by Cadence Spectre circuit simulator demonstrate that the proposed circuit model is a simple bipolar photon-controlled generalized memristor. Compared with the previously published memristor models, the biggest innovation of this paper is to propose a bipolar generalized memristor model instead of the traditional model, which can easily form the pinched hysteresis loop. Another highlight is that the generalized memristor model in this paper is controlled by photons while conventional memristors are charge-controlled/flux-controlled. Furthermore, the circuit level models are more stable, more reliable and more resistant to interference than the device level models. The topological structure of the proposed circuit model in this paper is much more simpler.

Locally Active Memristor with Three Coexisting Pinched Hysteresis Loops and Its Emulator Circuit

2020 ◽  
Vol 30 (13) ◽  
pp. 2050184
Author(s):  
Minghao Zhu ◽  
Chunhua Wang ◽  
Quanli Deng ◽  
Qinghui Hong
Keyword(s):  
Active Region ◽  
Chaotic System ◽  
Piecewise Linear ◽  
Chaotic Oscillation ◽  
Hysteresis Loops ◽  
State Equation ◽  
The Novel ◽  
Oscillation System ◽  
Memristor Emulator ◽  
Pinched Hysteresis

Locally active memristors with multiple coexisting pinched hysteresis loops have attracted the attention of researchers. However, the currently reported multiple coexisting pinched hysteresis loops memristors are obtained by adding additional piecewise-linear terms into the original Chua corsage memristor. This paper proposes a novel locally active memristor by introducing a polynomial characteristic function into the state equation. The novel memristor has three coexisting pinched hysteresis loops, large relative range of active region and simple emulator circuit. The characteristics of the novel memristor such as power-off plot, coexisting pinched hysteresis loops and DC [Formula: see text]–[Formula: see text] plot are studied. The memristor is used in a Chua chaotic system to investigate the effects of locally active characteristic on the chaotic oscillation system. Furthermore, the memristor emulator and chaotic system are designed and implemented by commercial circuit elements. The hardware experiments are consistent with numerical simulations.

Area of Pinched Hysteresis Loops for Current-Controlled Memristor and Voltage-Controlled Memristor

2015 ◽  
Vol 12 (11) ◽  
pp. 4335-4339
Author(s):  
Junwei Sun ◽  
Jincheng Li ◽  
Yanfeng Wang ◽  
Xuncai Zhang ◽  
Guangzhao Cui
Keyword(s):  
Hysteresis Loops ◽  
Pinched Hysteresis

scholarly journals Electronic Surveillance and Security Applications of Magnetic Microwires

2021 ◽  
Author(s):  
Valentina Zhukova ◽  
Paula Corte-Leon ◽  
Juan Maria Blanco ◽  
Mihail Ipatov ◽  
Julian Gonzalez ◽  
...  
Keyword(s):  
Hysteresis Loop ◽  
Hysteresis Loops ◽  
Electronic Surveillance ◽  
Post Processing ◽  
Security Applications ◽  
Non Linear ◽  
Magnetic Softness ◽  
Rectangular Hysteresis Loop ◽  
Low Dimensionality ◽  
Amorphous Microwires

Applications in security and electronic surveillance require combination of excellent magnetic softness with good mechanical and anti-corrosive properties and low dimensionality. We overviewed the properties of soft magnetic glass-coated microwires and different post-processing making them quite attractive for electronic article surveillance and security applications. We studied the magnetostatic interaction between the microwires and routes to tune the non-linear hysteresis loops by using the arrays of different types of amorphous microwires. The presence of neighbouring microwire (either Fe or Co-based) significantly affects the hysteresis loop of the whole microwires array. In a microwires array containing magnetically bistable microwires we observed splitting of the initially rectangular hysteresis loop with a number of Barkhausen jumps correlated with the number of magnetically bistable microwires. Essentially, non-linear and irregular hysteresis loops have been observed in mixed arrays containing Fe and Co-rich microwires. The observed non-linearity in hysteresis loops allowed to increase the harmonics and tune their magnetic field dependencies. Non-linear hysteresis loops have been also observed upon devitrification of amorphous microwires. On the other hand, several routes allowing to tune the switching field by either post-processing or modifying the magnetoelastic anisotropy have been reviewed. Observed unique combination of magnetic properties together with thin dimensions and excellent mechanical and anti-corrosive properties provide excellent perspectives for the use of glass-coated microwires for security and electronic surveillance applications.

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