Results 11 to 20 of about 709,030 (394)

Effect of Ni2O3 Doping on the Electrical Properties and Intrinsic Defect Concentration of ZnO Varistor Ceramics [PDF]

open access: yesE3S Web of Conferences, 2020
With the development of high voltage transmission, there is an urgent need to develop ZnO varistor ceramics with high anti-aging properties. The key is to manipulate the intrinsic defect concentration of ZnO varistor ceramics precisely.
Guo Qirui   +4 more
doaj   +1 more source

Porous Thermal Insulation Polyurethane Foam Materials

open access: yesPolymers, 2023
Porous thermal insulation materials (PTIMs) are a class of materials characterized by low thermal conductivity, low bulk density and high porosity. The low thermal conductivity of the gas enclosed in their pores allows them to achieve efficient thermal ...
Zhiguo Wang   +5 more
semanticscholar   +1 more source

Topological magnon insulator in insulating ferromagnet [PDF]

open access: yesPhysical Review B, 2013
In the ferromagnetic insulator with Dzyaloshinskii-Moriya interaction, we theoretically predict and numerically verify a topological magnon insulator, where the charge-free magnon is topologically protected to transport along the edge while it is insulating in the bulk.
Zhang, L., Ren, J., Wang, J.-S., Li, B.
openaire   +2 more sources

Topologically Localized Insulators

open access: yesPhysical Review Letters, 2022
We show that fully-localized, three-dimensional, time-reversal-symmetry-broken insulators do not belong to a single phase of matter but can realize topologically distinct phases that are labelled by integers. The phase transition occurs only when the system becomes conducting at some filling.
Lapierre, Bastien   +2 more
openaire   +4 more sources

Characteristics of the Partial Discharge in the Development of Conductive Particle-Initiated Flashover of a GIS Insulator

open access: yesEnergies, 2020
Conductive particles are one of the most important defects which can greatly degrade the performance of gas-insulated metal-enclosed switchgear (GIS). Many efforts have been made to clarify the influence on the withstand voltage, understand the flashover
Junping Zhao   +4 more
doaj   +1 more source

A Review of Natural Bio-Based Insulation Materials

open access: yesEnergies, 2023
Within the context of climate change and the environmental impact of the building industry, insulation materials contribute to improving the thermal performance of buildings, thus reducing energy demand and carbon emissions during the operation phase ...
Livia Cosentino   +2 more
semanticscholar   +1 more source

Topological Insulator Metamaterials

open access: yesChemical Reviews, 2023
Confinement of electromagnetic fields at the subwavelength scale via metamaterial paradigms is an established method to engineer light-matter interaction in most common material systems, from insulators to semiconductors, from metals to superconductors.
Harish N. S. Krishnamoorthy   +3 more
openaire   +5 more sources

Electrical field distribution of 35 KV Igla under polluted and ice-covered situation at power frequency

open access: yesThe Journal of Engineering, 2019
Lightning striking on power system may lead to severe accident and huge losses, which is the reason why line arresters are needed. During operation, the electrical field concentration in line arrester may lead to ablation and accelerated aging of ...
Guo Jie   +4 more
doaj   +1 more source

Design and short‐circuit current breaking test verification of a 72.5 kV single‐break fast vacuum circuit breaker

open access: yesIET Generation, Transmission & Distribution, 2022
Fast clearing of a short‐circuit fault is vital to increase the transmission capacity of power grid transmission lines and improve the transient stability of a power system.
Chen Guan   +8 more
doaj   +1 more source

Wall Insulation Materials in Different Climate Zones: A Review on Challenges and Opportunities of Available Alternatives

open access: yesThermo, 2023
Buildings account for nearly one-third of overall energy consumption in today’s world energy status, in which a considerable part is used for indoor conditioning.
Yitong Dong   +4 more
semanticscholar   +1 more source

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