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1. A study of the effect of temperature on the dielectric breakdown and lifetime of polyethylene materials under applied DC voltages at the nanoscale

Author

Halima Ibrahim El Saeedy, Ali Kallel, Imed Boukhris, Imen Kebaili, and E. Belgaroui

Subjects
Materials science, Dielectric strength, Condensed matter physics, Electrical breakdown, Insulator (electricity), Polyethylene, Condensed Matter Physics, Electronic, Optical and Magnetic Materials, chemistry.chemical_compound, chemistry, Instrumentation, Current density, Saturation (magnetic), Nanoscopic scale, Voltage
Abstract

The reported simulation results could be considered as one of the firsts modeling of the effect of temperature on the electrical breakdown phenomenon in polyethylene nanoscale. The breakdown begins with an abrupt increase of the external current density without a subsequent saturation. Our results show that the increase of temperature at a constant applied DC voltage leads to a breakdown and to a decrease of the insulator's lifetime. These outcomes are strongly linked to the injection of free charges into the sample and to the temporal evolution of the conduction current.

Published
2020
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