Results 21 to 30 of about 148,911 (262)

Surface states and charge accumulation states on reconstructed InAs(001) surfaces

Surface Science, 2015
Abstract Using angle-resolved photoelectron spectroscopy, we investigate the electronic structure of InAs(001) surfaces having different stoichiometries, i.e. the indium rich c(8 × 2) / 4 × 2 surface and the arsenic-rich c(2 × 8) / 2 × 4 surface. We also compare surfaces having the same reconstructions but prepared by different techniques; by ion ...
Tomaszewska, Natalia, Lis, Jakub, Kołodziej, Jacek, Walczak, Łukasz   +3 more
openaire   +2 more sources

Characteristics of Surface Charge Accumulation on Direct Current GIL Insulators Under Different Dominant Mechanisms Considering Surface Trapping Effect

Shanghai Jiaotong Daxue xuebao
The existing mathematical models for charge accumulation at the gas-solid interface can hardly illustrate some microscopic mechanisms, which need improvement.
WANG Yaogang, WANG Zheming, LI Ke, JIA Bowen, YANG Hua, YAN Wu, LU Wu
doaj   +1 more source

Charge transport and accumulation around the cone-type insulator in SF(6)-filled 550 kV DC GIL

The Journal of Engineering, 2019
The gas-insulated transmission line (GIL) has the advantages of large transmission capacity, high operation reliability and environmental friendliness. It is suitable for the high voltage direct current (HVDC) power transmission of hydropower stations or
Bo Zhang, Yujing Guo, Yongqi Yao, Zhijun Wang, Hao Zhang, Guangyao Jin   +5 more
doaj   +1 more source

Effect of Temperature on Space Charge Distribution in Two Layers of Transformer Oil and Impregnated Pressboard Under DC Voltage

IEEE Access, 2020
The space charge accumulation is an important factor to design the oil-pressboard composite insulation of convertor transformer, which is greatly affected by the temperature.
Jinfeng Zhang, Minghe Chi, Qingguo Chen, Wenxin Sun, Jinming Cao   +4 more
doaj   +1 more source

Surface Charge Transport Characteristics of ZnO/Silicone Rubber Composites Under Impulse Superimposed on DC Voltage

IEEE Access, 2019
Composites with nonlinear conductivity have been applied to modify the direct current (dc) electrical field distribution and accelerate the space charge dissipation in polymeric insulation.
Zhonglei Li, Zhuoran Yang, Boxue Du
doaj   +1 more source

Hydrogen on III-V (110) surfaces: Charge accumulation and STM signatures [PDF]

Physical Review B, 2013
The behavior of hydrogen on the 110 surfaces of III-V semiconductors is examined using ab initio density functional theory. It is confirmed that adsorbed hydrogen should lead to a charge accumulation layer in the case of InAs, but shown here that it should not do so for other related III-V semiconductors.
Castleton, CWM, Höglund, A, Göthelid, M, Qian, MC, Mirbt, S   +4 more
openaire   +1 more source

Phosphatidylinositol 4‐kinase as a target of pathogens—friend or foe?

FEBS Letters, EarlyView.
This graphical summary illustrates the roles of phosphatidylinositol 4‐kinases (PI4Ks). PI4Ks regulate key cellular processes and can be hijacked by pathogens, such as viruses, bacteria and parasites, to support their intracellular replication. Their dual role as essential host enzymes and pathogen cofactors makes them promising drug targets.
Ana C. Mendes, Guilherme M. Azevedo, Amanda P. Barcellos, Diana Bahia   +3 more
wiley   +1 more source

Investigating the Effect of Metal Particles and Air Gap Defects on the Surface Charge Distribution of Epoxy Resin Using a Modified Capacitive Probe

IEEE Access
Metal particle and air gap defects on the surface of insulators can induce localized electric field distortions and exacerbate charge accumulation, subsequently triggering surface flashover.
Feng Wang, Huimin Zhang, Dilixiati Hayireding, Haocheng Wang, Kaibin Liang, Lipeng Zhong, Heng Yi, Zeping Huang, Houjie Wu   +8 more
doaj   +1 more source

Suppression of surface charge accumulation on Al2O3-filled epoxy resin insulator under dc voltage by direct fluorination

AIP Advances, 2015
Surface charge accumulation on insulators under high dc voltage is a major factor that may lead to the reduction of insulation levels in gas insulated devices. In this paper, disc insulators made of Al2O3-filled epoxy resin were surface fluorinated using
Boya Zhang, Guixin Zhang, Qiang Wang, Chuanyang Li, Jinliang He, Zhenlian An   +5 more
doaj   +1 more source

Study on surface charges accumulation characteristics of insulators for ±500 kV DC-GIL based on multi-physics coupling model [PDF]

AIP Advances
When a DC voltage is applied externally, a large amount of charge accumulates on the surface of the insulating components in the gas insulated metal-enclosed transmission line (GIL), significantly reducing the flashover voltage along the surface and ...
Bingwei Chen, Jianguo Chen, Kanghao Yan, Xiukun Li, Chen Ma   +4 more
doaj   +1 more source