Results 111 to 120 of about 3,811,787 (369)

Voltage-stabilised elastomers with increased relative permittivity and high electrical breakdown strength by means of phase separating binary copolymer blends of silicone elastomers

open access: yes, 2017
Increased electrical breakdown strength and increased dielectric permittivity of silicone-based dielectric elastomers are achieved by means of the addition of so-called voltage-stabilisers prepared from PDMS–PPMS copolymers as well as PDMS–PEG copolymers
A. H. A. Razak, Liyun Yu, A. Skov
semanticscholar   +1 more source

Enhanced Electromechanical Response in 1D Hybrid Perovskites: Coexistence of Normal and Relaxor Ferroelectric Phases

open access: yesAdvanced Functional Materials, EarlyView.
The dynamic polarization reversal of coexisting normal and relaxor ferroelectrics in 1D TMAPbI₃ (tetramethylammonium, TMA) is deciphered through combined experimental and theoretical approaches. By bridging atomic‐scale motion, macroscopic polarization switching, and depolarization effects, a universal methodology is established to engineer next ...
Chen Xue   +8 more
wiley   +1 more source

Assessment of air void content of asphalt using dielectric constant measurements by GPR and with microwave radar [PDF]

open access: yes, 2016
In this report, we have presented microwave radar and GPR measurements as well as laboratory tests conducted in 2014-2016. The microwave radar was tested in three different construction sites.
Eskelinen, Jussi   +4 more
core  

Correspondence between dark energy quantum cosmology and Maxwell equations

open access: yes, 2019
A Friedmann-Robertson-Walker cosmology with dark energy can be modelled using a quintessence field. That system is equivalent to a relativistic particle moving on a two-dimensional conformal spacetime.
Asenjo, Felipe A., Hojman, Sergio A.
core   +1 more source

Electro‐Active Metasurfaces Controlling Exceptional Topological Phase Through Low‐Voltage Operation on Conductive Polymer

open access: yesAdvanced Functional Materials, EarlyView.
This research investigates an electro‐active chiral optical response (EACOR)‐driven dual‐channel metasurfaces with fast electrical switching rates of 52 ms, and a low operating voltage of 0.5 V. The combination of polyaniline (PANI) thin film and the exceptional topological (ET) phase of chiral gold (Au) meta‐atoms modulate holographic images through ...
Jaekyung Kim   +4 more
wiley   +1 more source

Room temperature fabrication and post-impregnation of LMO-ST composites: Engineering and modeling of dielectric properties

open access: yesOpen Ceramics, 2023
In this work, the effect of changing the Li2MoO4-SrTiO3 (LMO-ST) compositional proportion (1–100 wt%) on the microstructure, dielectric properties, and relative density of LMO-ST composites fabricated at room temperature was investigated.
Nina Kuzmić   +4 more
doaj  

Dyakonov-Tamm waves guided jointly by an ordinary, isotropic, homogeneous, dielectric material and a hyperbolic, dielectric, structurally chiral material

open access: yes, 2014
The planar interface of an ordinary, isotropic, homogeneous, dielectric material and a hyperbolic, dielectric, structurally chiral material can support the propagation of one or multiple Dyakonov-Tamm waves, at a specified frequency and along a specified
Faryad, Muhammad, Lakhtakia, Akhlesh
core   +1 more source

Fast Neutron Detector Based on Hybrid 2D Perovskite Thin Films

open access: yesAdvanced Functional Materials, EarlyView.
This work presents the direct detection of fast neutrons using flexible hybrid 2D perovskite (PEA2PbBr4) thin‐film detectors. Thanks to their high low‐Z elements content and good charge transport, these materials enable efficient neutron detection. The thin film configuration allowed the operation at low voltage, and offer scalability, flexibility, and
Ilaria Fratelli   +11 more
wiley   +1 more source

Nanoscale dielectric properties of TiO2 in SiO2 nanocomposite deposited by hybrid PECVD method

open access: yesNano Express
In this paper, nanocomposites (TiO _2 in SiO _2 ) are produced by an advanced hybrid aerosol-PECVD method based on direct liquid injection of a non-commercial colloidal solution in an O _2 / hexamethyldisiloxane (HMDSO) low-pressure plasma.
C Villeneuve-Faure   +7 more
doaj   +1 more source

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