Results 31 to 40 of about 1,486,722 (375)

Composition controllable multifunctionality of PVDF/PMMA/BaTiO3/OMMT based ternary and quaternary hybrid polymer nanocomposites

open access: yesChemical Physics Impact, 2023
State-of-the-art engineered multifunctional nanocomposites composed of different polymer matrices and functional nanomaterials are in high industrial demand for advances in all-solid-state flexible device technologies.
R.J. Sengwa, Naresh Kumar
doaj   +1 more source

High dielectric constant and low temperature ferroelectric-phase-transition in Ca, Pb co-doped BiFeO3

open access: yesResults in Physics, 2021
BiFeO3 was co-doped with (Ca, Pb) to obtain Bi1-x(Ca1/2Pb1/2)xFeO3 (x = 0, 0.1 and 0.3) and their structural, morphological, dielectric and ferroelectric properties were studied.
Rida Ahmed   +5 more
doaj   +1 more source

Nonradiating photonics with resonant dielectric nanostructures [PDF]

open access: yesNanophotonics, 2019
Nonradiating sources of energy have traditionally been studied in quantum mechanics and astrophysics but have received very little attention in the photonics community. This situation has changed recently due to a number of pioneering theoretical studies
K. Koshelev   +4 more
semanticscholar   +1 more source

Dielectric polymers for high-temperature capacitive energy storage.

open access: yesChemical Society Reviews, 2021
Polymers are the preferred materials for dielectrics in high-energy-density capacitors. The electrification of transport and growing demand for advanced electronics require polymer dielectrics capable of operating efficiently at high temperatures.
He Li   +5 more
semanticscholar   +1 more source

Super Dielectric Materials [PDF]

open access: yesMaterials, 2014
Evidence is provided here that a class of materials with dielectric constants greater than 105 at low frequency (<10−2 Hz), herein called super dielectric materials (SDM), can be generated readily from common, inexpensive materials. Specifically it is demonstrated that high surface area alumina powders, loaded to the incipient wetness point with a ...
Samuel Fromille, Jonathan Phillips
openaire   +6 more sources

Quantum Monte Carlo study of static potential in graphene [PDF]

open access: yes, 2017
In this paper the interaction potential between static charges in suspended graphene is studied within the quantum Monte Carlo approach. We calculated the dielectric permittivity of suspended graphene for the set of temperatures and extrapolated our ...
Astrakhantsev, N. Yu.   +4 more
core   +2 more sources

Modeling of the evolution of dielectric loss with processing temperature in ferroelectric and dielectric thin oxide films

open access: yes, 2008
It was experimentally found that the evolution of dielectric loss with processing temperature displays a common trend in ferroelectric and dielectric thin oxide films: firstly an increase and then a decrease in dielectric loss when the processing ...
Auciello   +4 more
core   +1 more source

Dielectric tensor of monoclinic Ga$_2$O$_3$ single crystals in the spectral range $0.5 - 8.5\,$eV [PDF]

open access: yes, 2015
The dielectric tensor of $\beta$-Ga$_2$O$_3$ was determined by generalized spectroscopic ellipsometry in a wide spectral range from $0.5\,\mathrm{eV}$ to $8.5\,\mathrm{eV}$ as well as by calculation including quasiparticle bands and excitonic effects ...
Bechstedt, Friedhelm   +4 more
core   +4 more sources

Modification of physical properties of Ba(Ni1/3Nb2/3)O3 ceramics through ordered domain engineering

open access: yesJournal of Materiomics, 2022
Ordered domain engineering has been further developed for modifying and improving physical properties in complex perovskite ceramics. In the present work, Ba(Ni1/3Nb2/3)O3 ceramic is taken as a typical example for ordered domain engineering, in which the
Rui Da Shi   +3 more
doaj   +1 more source

Screening of Coulomb interactions in liquid dielectrics

open access: yes, 2018
The interaction of charges in dielectric materials is screened by the dielectric constant of the bulk dielectric. In dielectric theories, screening is assigned to the surface charge appearing from preferential orientations of dipoles along the local ...
Martin, Daniel R.   +2 more
core   +1 more source

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