Results 251 to 260 of about 6,317,441 (292)

Single filament partial discharge: Surface charge accumulation

2013 Annual Report Conference on Electrical Insulation and Dielectric Phenomena, 2013
In our experiments the single DC discharges propagate in the “needle - air gap - dielectric barrier - plane” system under atmospheric pressure. Polypropylene (12 μm) and polyethylene terephthalate (100 μm) films were used as barriers. Interelectrode air gap varied in the range of 100-2000 μm, breakdown voltages - in the range of 1200-3800 V.
P. Bondarenko, O. Emelyanov, M. Shemet
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What is Mechanism of Space Charge Accumulation in Polyethylene with Surface Fluorination?

2021 International Conference on Electrical Materials and Power Equipment (ICEMPE), 2021
Several researches has proved that surface fluorination of polyethylene has a significant barrier effect of space charge, so whether the surface fluorination treatment of poly (ethylene-co-vinyl acetate) (EVA) loaded with carbon black particles electrode has the same effect?
Jiaping Pan, Mingshu Lyu, Zhenlian An, Feihu Zheng, Yewen Zhang   +4 more
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Photoemission spectroscopy study of the charge accumulation at the K3Sb:Cs surface

Applied Surface Science, 2001
Abstract The alkali antimonide compounds are widely applied in light detection devices. The strong optical absorption and the low electron affinity make the photon–electron conversion very efficient in these materials. In this paper, we present the results of a photoemission spectroscopy study of K 3 Sb films of 100 A with and without an extra layer ...
A.R.H.F Ettema, C.F Murtagh, H.I Starnberg   +2 more
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Surface Charge Accumulation on PTFE under Magnetic Field

2007 IEEE International Conference on Solid Dielectrics, 2007
Polytetrafluoroethylene (PTFE) was employed to investigate the effect of magnetic field on surface charge accumulation. The magnetic field (B) was set to make E×B drift into, away from and parallel to sample surface. An electrostatic probe was designed to measure the surface charge density.
Boxue Du, Yu Gao
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A consideration on decay process of an accumulated charge of polymer surfaces

Electrical Engineering in Japan, 1982
Experiments using a material with single chemical structure, polyethylene (PE), were performed to study the decay process of charge on a polymer surface accumulated by corona discharge. The motion of charge accumulated on a PE surface within a short time period was studied. Experimental results are discussed in relation to theoretical calculations.
Jun Kyokane, Katsumi Yoshino, Yoshio Inuishi, Roland Coelho   +3 more
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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), 2003
The 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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Research on Surface Charge Accumulation Characteristics of DC Basin Insulator

2020 4th International Conference on HVDC (HVDC), 2020
When the DC voltage applied, the electric field distribution of the DC GIL basin insulator will change from the initial capacitive distribution to the steady-state resistive distribution. This process is accompanied by the accumulation and dissipation of surface charges, which may cause a decrease in the flashover voltage along the insulator. Therefore,
Qiang Wang, Ye Li, Yiping Gao, Junping Zhao, Liucheng Hao   +4 more
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Collective bulk carrier delocalization driven by electrostatic surface charge accumulation

Nature, 2012
In the classic transistor, the number of electric charge carriers--and thus the electrical conductivity--is precisely controlled by external voltage, providing electrical switching capability. This simple but powerful feature is essential for information processing technology, and also provides a platform for fundamental physics research. As the number
M, Nakano, K, Shibuya, D, Okuyama, T, Hatano, S, Ono, M, Kawasaki, Y, Iwasa, Y, Tokura   +7 more
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Enhancing magnetoimpedance response by anisotropic surface-charge accumulation

Journal of Magnetism and Magnetic Materials
Magnetoimpedance (MI) elements show potential application in detection devices as well as advanced electronic components such as neuro-morphing computing and magneto-ionics. We demonstrate surface-charge accumulation via the transformative impact of near-field electrospinning on MI response of Co-based ribbons via longitudinal or transverse formation ...
Mohammad Zare, Loghman Jamilpanah, Ali Sadeghi, Majid Ghanaatshoar, Majid Mohseni   +4 more
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The accumulation of surface charge due to a conducting particle on a spacer

11th International Symposium on High-Voltage Engineering (ISH 99), 1999
The electrical properties of the widely used gas inslulated systems for switchgear depend strongly on the properties of the used gas. Electrical fieldstrength and the field distribution determine the behaviour. If the field gets disturbed the insulation properties decrease significantly. Conducting particles lead to local field enhancement.
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