Results 1 to 10 of about 267,780 (226)

On the permittivity of titanium dioxide [PDF]

open access: yesScientific Reports, 2021
AbstractConductive rutile TiO2 has received considerable attention recently due to multiple applications. However, the permittivity in conductive, reduced or doped TiO2 appears to cause controversy with reported values in the range 100–10,000. In this work, we propose a method for measurements of the permittivity in conductive, n-type TiO2 that ...
Bonkerud, Julie   +4 more
openaire   +6 more sources

Determination of effective permittivity and permeability of metamaterials from reflection and transmission coefficients [PDF]

open access: yes, 2001
We analyze the reflection and transmission coefficients calculated from transfer matrix simulations on finite lengths of electromagnetic metamaterials, to determine the effective permittivity ~«! and permeability ~m!
David R. Smith   +3 more
semanticscholar   +3 more sources

Permittivity-Asymmetric Quasi-Bound States in the Continuum. [PDF]

open access: yesNano letters (Print), 2022
Breaking the in-plane geometric symmetry of dielectric metasurfaces allows us to access a set of electromagnetic states termed symmetry-protected quasi-bound states in the continuum (qBICs).
Rodrigo Berté   +9 more
semanticscholar   +1 more source

Polyvinyl chloride-based dielectric elastomer with high permittivity and low viscoelasticity for actuation and sensing

open access: yesNature Communications, 2023
Dielectric elastomers (DEs) are widely used in soft actuators but existing DE actuators often require high driving electrical fields. Here the authors demonstrate that introducing cyanoethyl cellulose into plasticized PVC gel confers high dielectric ...
Jianjian Huang   +4 more
semanticscholar   +1 more source

Dynamic variation of the dielectric permittivity of elastomers with mechanical constraints

open access: yesAIP Advances, 2023
Elastomers are commonly used as insulators or actuators in important fields such as robotics and electronics. The performance of elastomers is strongly influenced by their dielectric permittivity while determining the dielectric permittivity of ...
Pan Jia, Xianghe Zheng, Jianyou Zhou
doaj   +1 more source

BARIUM AND CALCIUM NIOBATE CERAMICS: SPECIFIC FEATURES OF THEIR STRUCTURE

open access: yesФизико-химические аспекты изучения кластеров, наноструктур и наноматериалов, 2021
We obtained and studied the samples of ceramics based on barium niobate and calcium niobate CaxBa1-xNb2O6 with different percentages of barium and calcium (x=1; 0,9; 0,8; 0,7; 0,6; 0,5; 0,4; 0,3; 0,2; 0,1 and 0).
O.S. Guseva   +3 more
doaj   +1 more source

Electrical and electromagnetic properties of isolated carbon nanotubes and carbon nanotube-based composites [PDF]

open access: yesPolyolefins Journal, 2016
Isolated carbon nanotubes (CNTs), CNT films and CNT-polymer nanocomposites are a new generation of materials with outstanding mechanical, thermal, electrical and electromagnetic properties. The main objective of this article is to provide a comprehensive
Alireza Nikfarjam   +2 more
doaj   +1 more source

Negative Permittivity Behavior in Flexible Carbon Nanofibers- Polydimethylsiloxane Films

open access: yesEngineering Sciences, 2021
Flexible electronic devices have recently become a research hotspot due to their potential in different applications. However, there is a lack of studies about flexible metamaterials with negative parameters.
Haikun Wu   +9 more
semanticscholar   +1 more source

Recent progress in polymer dielectrics containing boron nitride nanosheets for high energy density capacitors

open access: yesHigh Voltage, 2020
Hexagonal boron nitride nanosheets (BNNSs) are two-dimensional nanomaterials with graphitic-like layered nanostructures, high surface areas, and large aspect ratios.
He Li   +5 more
doaj   +1 more source

Effective Permittivity of a Statistically Inhomogeneous Medium with Strong Permittivity Fluctuations [PDF]

open access: yesProgress In Electromagnetics Research, 2004
Most previous multiple-scattering theories for electromagnetic waves in strongly fluctuating media are limited by the assumption of statistical homogeneity of media. In the paper, a lossy electrically isotropic random medium is considered whose mean permittivity distribution, as well as the multipoint permittivity's moments are invariant under ...
S. N. Shulga   +2 more
openaire   +2 more sources

Home - About - Disclaimer - Privacy