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A review on factors that affect surface charge accumulation and charge-induced surface flashover
Nanotechnology, 2021Abstract The surface charge accumulation is very likely to trigger the surface flashover, which limits the large-scale application of DC GIL/GIS. This article comprehensively reviews the effect of six factors, including insulator-electrode shape, surface roughness of the insulator and conductor, metal particles, temperature, humidity,
Mengqiang Yuan +10 more
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Journal of Applied Physics, 2022
Charge accumulation on the surface of insulation dielectric used in high voltage DC equipment is one of the important causes of surface flashover. Surface charge accumulation is closely related to surface trap characteristics. In this paper, the surface trap energy level distribution of polyimide (PI) was calculated and analyzed by the corona charging ...
Guochang Li +5 more
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Charge accumulation on the surface of insulation dielectric used in high voltage DC equipment is one of the important causes of surface flashover. Surface charge accumulation is closely related to surface trap characteristics. In this paper, the surface trap energy level distribution of polyimide (PI) was calculated and analyzed by the corona charging ...
Guochang Li +5 more
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Surface charge accumulation and decay in electrospray printing
Journal of Physics D: Applied Physics, 2020Abstract In electrospray printing, the accumulation of electric charge on the target substrate plays an important role in governing the structure of the deposit. To better understand the effect of charge, we report on the use of two methods to measure the rate of charge accumulation and decay on dielectric substrates targeted with ...
Yaqun Zhu, Paul R Chiarot
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Charge Accumulation at InAs Surfaces
Physical Review Letters, 1996Angle-resolved photoelectron spectroscopy has been used to directly prove the existence of a charge accumulation layer at clean InAs surfaces. The formation of an accumulation layer is shown to be a common property of polar InAs surfaces, with the precise surface Fermi level position above the conduction band minimum determined by the surface geometry.
, Olsson +5 more
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Surface-charge accumulation and clustering in fluorites
Solid State Ionics, 1983Abstract Comparative Thermally Stimulated Polarization and Depolarization studies have been carried out on SrF 2 crystals doped with lanthanum up to molar concentrations of 5x10 −2 and to temperatures of 500K. The first three peaks, attributed to nearest-neighbour dipoles and to clusters built with this basic unit (L-shaped La 3+ -F i2 − and the ...
E LAREDO, M PUMA, N SUAREZ, D FIGUEROA
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Mechanisms of surface charge accumulation in SF6
Archiv für Elektrotechnik, 1994Special geometries of electrodes were designed to determine the dominant mechanism of surface charge accumulation. It was found that the charge transport in the gas is dominant, and consequently, the normal field at spacer surfaces as well as the ionization behaviour at electrode surfaces play important roles in charge accumulation in SF6.
T. Jing +2 more
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Surface-Charge-Dependent Nanoparticles Accumulation in Inflamed Skin
Journal of Pharmaceutical Sciences, 2012Polymeric nanoparticles (NPs) are interesting drug carriers for dermal application and drug targeting to certain skin structures. NP interactions with diseased skin and the associated benefits and risks have been hardly explored. Today, we study the behavior of polymeric NPs for selective drug delivery to inflamed skin.
Mona M A, Abdel-Mottaleb +4 more
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The Effect of PD Process on the Accumulation of Surface Charges
IEEE Transactions on Plasma Science, 2016The distribution of surface charges at the interface between gas and insulating material relates to the partial discharge process in a void. In order to clarify this, a 2-D model is constructed in this paper. Based on this, the streamer development and the accumulating process of surface charges are obtained under both polarities of the applied voltage.
Cheng Pan, Ju Tang, Kai Wu
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Surface charge accumulation on HVDC-GIS-spacer
Conference Record of the the 2002 IEEE International Symposium on Electrical Insulation (Cat. No.02CH37316), 2003The paper deals with the surface charge accumulation on spacers of gas-insulated substations (GIS) applied to HVDC. The surface charge accumulation on solid insulators is a major problem of HVDC systems because it distorts the field distribution and reduces the breakdown voltage.
F. Messerer, M. Finkel, W. Boeck
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Insulator surface charge accumulation under DC voltage
Conference Record of the the 2002 IEEE International Symposium on Electrical Insulation (Cat. No.02CH37316), 2003The phenomena of surface charging are investigated using the capacitive probe method. In order to decrease the charge leakage a new type probe with high resolution is designed. The influence of voltage amplitude, duration, polarity and surrounding humidity on the surface charging are studied.
F. Wang, Q. Zhang, Y. Qiu, E. Kuffel
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