Results 11 to 20 of about 194,102 (294)

The tunable permittivity of multi-walled carbon nanotubes/silver nanoparticles reinforced polyvinyl alcohol (PVA) nanocomposites at low frequency

open access: yesMaterials Research Express, 2018
This paper is about tailoring high permittivity of multi-walled carbon nanotubes/silver nanoparticles (MWNT-AgNP) filled polyvinyl alcohol (PVA) nanocomposites at low frequency. PVA/MWNT-AgNP nanocomposites were synthesized via solution-casting technique
Yusliza Yusof   +3 more
doaj   +1 more source

Effect of different surface treatment agents on the physical chemistry and electrical properties of polyethylene nano-alumina nanocomposites

open access: yesHigh Voltage, 2020
Generally, the electrical properties of nanocomposite are affected by the type, size, filling concentration and surface treatment process of the nanoparticle.
Xuhui Duan   +5 more
doaj   +1 more source

Field-driven merging of polarizations and enhanced electrocaloric effect in BaTiO3-based lead-free ceramics

open access: yesJournal of Advanced Ceramics, 2022
Solid-state cooling technology based on electrocaloric effect (ECE) has been advanced as an alternative to replace the vapour-compression approach to overcome the releasing of the global warming gases.
Xiang Niu   +12 more
doaj   +1 more source

The Role of Probe Attenuation in the Time-Domain Reflectometry Characterization of Dielectrics [PDF]

open access: yes, 2010
The influence of the measurement setup on the estimation of dielectric permittivity spectra from time-domain reflectometry (TDR) responses is investigated.
Ferraris, S.   +2 more
core   +1 more source

Dielectric properties of deformed early potatoes

open access: yesResearch in Agricultural Engineering, 2008
The permittivity of potato tissue was studied during uniaxial compression of cylindrical specimens prepared from two early varieties. Both the real and the imaginary permitivity components were determined repeatedly during the loading and unloading tests.
J. Blahovec
doaj   +1 more source

A Planar Millimeter-Wave Resonator-Array to Sense the Permittivity of COP Film with the 5G Handset Back-Cover

open access: yesSensors, 2021
In this paper, a new sensor is developed to estimate the dielectric constant of Cyclo Olefin Polymer (COP) film utilizable for 5G mobile phones’ multi-layered back-cover. It is featured by the electrical characterization of the thin layer of the COP film
Yejune Seo   +5 more
doaj   +1 more source

CaCu3Ti4O12 ceramics from co-precipitation method: Dielectric properties of pellets and thick films [PDF]

open access: yes, 2009
Dielectric properties of CaCu3Ti4O12 (CCTO)-based ceramics and thick films (e ∼50m) prepared from powders synthesized by a soft chemistry method (co-precipitation) are presented and discussed.
Barbier, Bertrand   +7 more
core   +3 more sources

Microwave absorption properties of Co, Cu, Zn: substituted hexaferrite polychloroprene nanocomposites

open access: yesMaterials Research, 2008
The magnetic behavior and its relationship with microwave absorbing properties have been investigated for doped Z-type barium hexaferrites (Ba3Co1.3Zn0.3Cu0.4Fe 24O41)/ polychloroprene (CR) nanocomposites.
Valeska da Rocha Caffarena   +3 more
doaj   +1 more source

Complex effective permittivity of a lossy composite material [PDF]

open access: yes, 1996
In recent work, boundary integral equations and finite elements were used to study the (real) effective permittivity for two-component dense composite materials in the quasistatic limit.
Beroual, Abderrahmane   +3 more
core   +3 more sources

Successive absorption and refraction of ultrathin molecular nano-films

open access: yesZaštita Materijala, 2014
Based on the formed model of nanofilm crystal structures, changes of optical properties due to the presence of borders for the case of symmetrical ultrathin films are theoretically investigated in this paper.
Jovan P. Šetrajčić, Blanka Škipina
doaj   +1 more source

Home - About - Disclaimer - Privacy