Space charge packets in polyethylene nano-scales under dc applied voltages

Chouikhi, S.; Boukhris, Imed; Belgaroui, E.; Kallel, A.

doi:10.1016/j.elstat.2012.11.001

Cited by 14 publications

(6 citation statements)

References 14 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Among these phenomena, we point out that for the first time in modeling, our numerical results were able to reproduce the phenomenon of charge packets that we have published in reference [24]. Regarding the regeneration phenomenon of charge packets, it was reproduced numerically for the first time by our results and it was published in reference [31]. Moreover, our model was also able to reproduce most of the facts related to space charge limited current model, known among the physical models of the electrical conduction [2,24].…”

Section: Validation Of the Thickness Variation Effect On The Breakdow...supporting

confidence: 63%

“…However, we note that under high dc applied fields, the trapped charge densities are very low and can be neglected compared to those of mobiles charges, as it is reported in previous works [24,31]. In this work, to illustrate the last conclusion, we present in figure 6 an example of the trapped electron density distribution within the thickness of the LDPE material.…”

Section: Trapping Coefficient Effect On Breakdownsupporting

confidence: 62%

See 1 more Smart Citation

Physical factors influencing dielectric polymer electrical breakdown by generated space charges under a strong electric field

Boughariou,

Belgaroui

2023

Phys. Scr.

View full text Add to dashboard Cite

The present work constitutes a contribution in studying the breakdown phenomenon generated by the electron–hole dynamics during their bipolar transport in a polyethylene film subjected to strong dc electrical field. This contribution is addressed to the analysis of the determining physical parameters effects in the electrical breakdown process within a low density polyethylene LDPE film. Indeed, the previous modeling and analysis works for breakdown phenomenon are still limited in this topic. In this regard, using our model of bipolar transport in the charged dielectrics, we present, in this article, a more complete analysis affecting more physical parameters influencing the breakdown transient dynamic process. Theses parameters are namely the applied field, the carrier mobility, the sample temperature, the injection barrier and the coefficients associated with the bipolar transport physical mechanisms. Briefly, our results highlight the existence of two classes of inverse effects and allowed us to establish new power laws. Our validation with previous work is addressed to the effect of the sample thickness on the breakdown field.

show abstract

Section: Validation Of the Thickness Variation Effect On The Breakdow...supporting

confidence: 63%

Section: Trapping Coefficient Effect On Breakdownsupporting

confidence: 62%

Physical factors influencing dielectric polymer electrical breakdown by generated space charges under a strong electric field

Boughariou,

Belgaroui

2023

Phys. Scr.

View full text Add to dashboard Cite

show abstract

“…Por otra parte, existen modelos que explican cómo se propagan estos paquetes en polímeros (Daomin et al, 2013) (Chouikhi et al, 2013). Para disminuir los paquetes de carga de espacio a través del volumen del material se han añadido nanopartículas dieléctricas al polietileno (Ohki, et al, 2009).…”

Section: Figura 2 Elementos Que Componen Los Cables De Media Tensiónunclassified

Contribución de la humedad a la formación y transporte de carga de espacio en LDPE mediante la técnica del Pulso Electroacústico

Ávila

Jalil

Moya

et al. 2015

View full text Add to dashboard Cite

En este trabajo se obtuvieron resultados que evidencian la formación de carga de espacio en polietileno de baja densidad, LDPE, causados por la aborción de humedad. Se demostró que mientras mayor es el tiempo de exposición de las muestras a la atmósfera húmeda de vapor de agua, crece la carga acumulada en las interfaces y en el volumen del polietileno. También se pudo observar que la humedad facilita el proceso de conducción de paquetes de carga a través de los films de polietileno, empleando menos tiempo en muestras humedecidas que en las que no se humedecieron. La humedad absorbida por el LDPE contribuye a que existan mayor cantidad de centros de atrapamiento para la carga inyectada desde los electrodos y al aporte de carga volumétrica por ionización debido al efecto de campos eléctricos elevados.

show abstract

“…However, limited by the coupling problem between multi-physics modules, it is difficult to construct the models of piezoelectric transducer and amplifier to simulate the whole signal conversion process in PEA measurement. In contrast, the bipolar charge transport model can simulate the spatial and temporal evolutions of space charge under DC and AC electrical stresses [8][9][10]. However, it cannot analyze the effect of the property of measurement system itself on the charge results, that is, it is impossible to discuss the influence of the acoustic signal propagation process on the system.…”

Section: Introductionmentioning

confidence: 99%

Equivalent transmission line characterization and multi‐layer material measurement analysis of the signal conversion process in the pulsed electro‐acoustic method

Ren,

Zhao,

et al. 2023

IET Science Measure & Tech

View full text Add to dashboard Cite

This paper studies the equivalent transmission line model of the pulsed electro‐acoustic (PEA) method with its applications. Based on the consistency of acoustic wave behaviour inside lossy acoustic materials and voltage wave propagation in transmission line, an equivalent simulation model of the PEA system is developed, whose reliability is verified by the output from the transducer and amplifier models and the comparison with measured waveforms. For the problem of acoustic impedance mismatch between different modules, simulation indicates that the unequal impedances of semiconducting electrode and sample can affect the amplitude of the measured signal at the upper electrode side, and the reflected acoustic waves caused by the transducer can affect the charge waveform. Further simulation for multi‐layer materials finds that the reflected acoustic waves of different samples and sound absorbing module can superimpose on the charge signal. Accordingly, a selection criterion is proposed to avoid the effect of the reflected waves at the interface. As for the acoustic reflection caused by internal charge, it needs to be dealt with sequentially in calibration process, starting from the result inside the sample near ground electrode. The research can provide a foundation for analyzing the acoustic properties of the PEA method.

show abstract

Space charge packets in polyethylene nano-scales under dc applied voltages

Cited by 14 publications

References 14 publications

Physical factors influencing dielectric polymer electrical breakdown by generated space charges under a strong electric field

Physical factors influencing dielectric polymer electrical breakdown by generated space charges under a strong electric field

Contribución de la humedad a la formación y transporte de carga de espacio en LDPE mediante la técnica del Pulso Electroacústico

Equivalent transmission line characterization and multi‐layer material measurement analysis of the signal conversion process in the pulsed electro‐acoustic method

Contact Info

Product

Resources

About