Results 241 to 250 of about 6,317,441 (292)
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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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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 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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Insulator surface charge accumulation under impulse voltage
IEEE Transactions on Dielectrics and Electrical Insulation, 2004The surface charge distribution under impulse voltage is measured using a static capacitance probe. A probe with very small charge leakage is designed. The condition of surface charge accumulation under impulse voltage is analyzed, and it is concluded that micro discharges in the gas near the insulator surface such as the corona caused by free and ...
E Kuffel, Yuchang Qiu
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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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IEEE Transactions on Dielectrics and Electrical Insulation, 2018
Surface charges have the effect of changing the electric field over spacers in compressed gases, which may affect the stable operation of gas insulated equipment and could possibly trigger a catastrophic surface flashover without warning. In this paper, we review the literature on surface charge accumulation and related surface flashover phenomenon on ...
Bo Zhang, Chuanyang Li
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Surface charges have the effect of changing the electric field over spacers in compressed gases, which may affect the stable operation of gas insulated equipment and could possibly trigger a catastrophic surface flashover without warning. In this paper, we review the literature on surface charge accumulation and related surface flashover phenomenon on ...
Bo Zhang, Chuanyang Li
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Computational study of charge accumulation at SnO2(110) surface
Surface Science, 2005Abstract Features of SnO2(1 1 0) surfaces with a surplus electron are considered computationally by applying density functional method. The additional charge is found to influence on surface energetics and surface relaxations considerably with respect to the corresponding surfaces without additional charge.
Matti A. Mäki-Jaskari +2 more
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Depletion of surface accumulation charge in InN by anodic oxidation
Journal of Applied Physics, 2009Si-doped InN layer by molecular beam epitaxy was subjected to anodic oxidation in 0.1 M potassium hydroxide (KOH) electrolyte and characterized by electrochemical methods to derive carrier profile at the InN surface. The obtained results were compared to the characteristics of a planar resistor structure and vertical metal-oxide-semiconductor (MOS ...
A. Denisenko +6 more
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