scispace - formally typeset
Search or ask a question
Topic

Insulator (electricity)

About: Insulator (electricity) is a research topic. Over the lifetime, 15941 publications have been published within this topic receiving 108950 citations. The topic is also known as: electrical insulator.


Papers
More filters
Journal ArticleDOI
TL;DR: In this paper, the ionic conductivity of solid ionic composites containing a dispersed insulating phase (like LiI/Al 2 O 3 ) is studied within percolation theory, and a realistic three dimensional model which takes into account both the blocking of the mobile ions by the insulator and the enhanced conductivity along the internal interfaces is developed.

31 citations

Journal ArticleDOI
TL;DR: In this article, a closed form formulation for the impedance of the metal-insulator-metal (MIM) plasmonic transmission lines by solving the Maxwell's equations is proposed.
Abstract: We propose a closed form formulation for the impedance of the metal–insulator–metal (MIM) plasmonic transmission lines by solving the Maxwell’s equations. We provide approximations for thin and thick insulator layers sandwiched between metallic layers. In the case of very thin dielectric layer, the surface waves on both interfaces are strongly coupled resulting in an almost linear dependence of the impedance of the plasmonic transmission line on the thickness of the insulator layer. On the other hand, for very thick insulator layer, the impedance does not vary with the insulator layer thickness due to the weak-coupling/decoupling of the surface waves on each metal–insulator interface. We demonstrate the effectiveness of our proposed formulation using two test scenarios, namely, almost zero reflection in T-junction and reflection from line discontinuity in the design of Bragg reflectors, where we compare our formulation against previously published results.

31 citations

Journal ArticleDOI
01 Apr 1995
TL;DR: In this article, the authors provide a scientific basis for the design of HVDC vacuum components, based on a study of breakdown and emission mechanisms, and from the measured insulating performance of many different geometries.
Abstract: We discuss a number of practical implications from recent studies on HVDC design concepts for vacuum components. These studies dealt with microwave tube technology. The conclusions, however, are valid for a wide range of components. The goal of this work is to provide a scientific basis for the design of HVDC vacuum components. From a study of breakdown and emission mechanisms, and from the measured insulating performance of many different geometries, we have derived guidelines for the design of, for example, insulators and cables. It is further shown how conditioning procedures and operating conditions (operating pressure, insulator charging) should be reflected in the design. We discuss a number of practical implications regarding insulator design, conditioning, vacuum vs. air operation, HV cables in vacuum and potting. >

31 citations

Patent
07 Jun 1999
TL;DR: In this paper, a flux collector for an electrical machine includes a continuous strand (36, 52) of ferromagnetic material; and an electrical insulator (38) covering the strand, forming a tight cylindrical coil including a plurality of turns that are stacked axially.
Abstract: A flux collector (30, 50) for an electrical machine includes a continuous strand (36, 52) of ferromagnetic material; and an electrical insulator (38) covering the strand. The strand forms a tight cylindrical coil including a plurality of turns that are stacked axially. The insulator (38) provides turn-to-turn insulation. The insulated wire is covered with a binder (40) and cured. The strand can be a high permeability wire (36) made of soft iron, silicon steel or cobalt steel. In the alternative, the strand can be a strip of METGLAS® amorphous alloy (52).

31 citations

Patent
Maddocks Fred S1
31 Dec 1975
TL;DR: In this paper, a chemically vapor deposited (CVD) insulator is used to form a substantially planar layer of insulative material atop a conductive pattern on the surface of a substrate.
Abstract: A method using a chemically vapor deposited (CVD) insulator to form a substantially planar layer of insulative material atop a conductive pattern on the surface of a substrate. The invention also features the use of a photoresist both as a mask for forming apertures in an underlying insulating layer as well as a lift-off material for a subsequently deposited conductive layer. In the method, a first insulating layer is deposited atop the substrate. Photoresist is then deposited; the resist pattern is exposed and developed; and the insulator is etched to expose selected areas of the substrate. A conductive film, preferably metal, is then deposited in blanket fashion in such quantity as to achieve the same height as the first insulator within the exposed apertures. The resist is lifted off, thereby leaving metal in the exposed apertures only. The pattern at this point consists of a single level of a conductive pattern and the insulator pattern with gaps between the conductors and the insulator. The gaps are the result of the unavoidable removal of a portion of the insulator below the photoresist during the etching process. Another insulating film is chemically vapor deposited (pyrolytically deposited) in blanket fashion. Notwithstanding the gaps between the conductors and first insulator, the second film is substantially planar if the thickness of this second insulating film equals or exceeds one-half the width of the largest of said gaps. The method is applicable to any level of conductive patterns (metallization) atop the substrate.

31 citations


Network Information
Related Topics (5)
Voltage
296.3K papers, 1.7M citations
89% related
Dielectric
169.7K papers, 2.7M citations
86% related
Thin film
275.5K papers, 4.5M citations
82% related
Silicon
196K papers, 3M citations
80% related
Band gap
86.8K papers, 2.2M citations
80% related
Performance
Metrics
No. of papers in the topic in previous years
YearPapers
2023368
2022892
2021224
2020478
2019561
2018629