Results 11 to 20 of about 82,623 (267)

Effects of La2O3-Doping and Sintering Temperature on the Dielectric Properties of BaSrTiO3 Ceramics [PDF]

open access: yesMaterials Research, 2016
Using BaCO3, SrCO3 and TiO2, et al as crude materials, La2O3 as dopant, Ba0.8Sr0.2TiO3 (BST) Ceramics of perovskite structure were prepared by solid state reaction method.
HongWei Zhao   +3 more
doaj   +1 more source

Dielectric Studies on Fe3O4 Nanodoped p-n-Alkyloxybenzoic Acids

open access: yesAdvances in Condensed Matter Physics, 2014
The stability of phase transition temperatures and textural changes for thermotropic pure and nanodoped p-n-alkyloxybenzoic acid mesogens were aimed to study at considerable time periods.
S. Sreehari Sastry   +5 more
doaj   +1 more source

Enhancing Electrical Outputs of Piezoelectric Nanogenerators by Controlling the Dielectric Constant of ZnO/PDMS Composite

open access: yesMicromachines, 2021
Structural optimizations of the piezoelectric layer in nanogenerators have been predicted to enhance the output performance in terms of the figure of merit.
Yerkezhan Amangeldinova   +6 more
doaj   +1 more source

Effect of UV radiation on dielectric properties of PU/nano-TiO2 composites

open access: yesIraqi Journal of Physics, 2019
The dielectric constant of most polymers is very low; the addition of TiO2 particles into the polymers provides an attractive and promising way to reach a high dielectric constant.
Ahmed Q. Abdullah
doaj   +1 more source

The Predicted Dielectric Constant of an Amorphous PVDF Changing with Temperature by Molecular Dynamics Simulations

open access: yesInternational Journal of Electrochemical Science, 2018
PVDF, a soft dielectric material, has attracted great attention in the research field of soft smart materials. However, some of the mechanisms for the dielectric and piezoelectric behaviors of PVDF are still not clear.
Taotao Hu, Bingbing Hu, Yabin Yan
doaj   +1 more source

Permittivity effects of particle agglomeration in ferroelectric ceramic-epoxy composites using finite element modeling

open access: yesAIP Advances, 2018
The size dependence of the dielectric constants of barium titanate or other ferroelectric particles can be explored by embedding particles into an epoxy matrix whose dielectric constant can be measured directly.
Jonas L. Kaufman   +10 more
doaj   +1 more source

Achieving excellent temperature-stable dielectric properties of -based lead-free ceramics via doping

open access: yesJournal of Advanced Dielectrics, 2023
The lead-free ceramics ([Formula: see text])(0.94[Formula: see text][Formula: see text][Formula: see text]TiO3-0.06BiAlO3)-[Formula: see text]AgNbO3 (denoted as BNBTA-[Formula: see text]AN) were synthesized via a solid-state sintering method.
Li-na Liu   +3 more
doaj   +1 more source

Dielectric Characterization of Chinese Standard Concrete for Compressive Strength Evaluation

open access: yesApplied Sciences, 2017
Dielectric characterization of concrete is essential for the wireless structural health monitoring (SHM) of concrete structures. Guo Biao (GB) concrete refers to the concrete mixed and cast in accordance with the Chinese standard. Currently, China is the
Kwok L. Chung   +5 more
doaj   +1 more source

Characterization of Terahertz Dielectric Constant and Pore Structure of Hardened Cement Paste with GEM Model

open access: yesTaiyuan Ligong Daxue xuebao, 2023
Purposes A deep understanding of the pore structure of cement paste is important for improving the performance of cement-based materials. Methods In this paper, terahertz time-domain spectroscopy (THz-TDS) system was used to test the terahertz time ...
Wentao ZHANG   +4 more
doaj   +1 more source

Study on soil dielectric constant models: A review

open access: yesGuan'gai paishui xuebao
【Objective】 Soil dielectric constant measures the ability of a soil to transmit electric fields. It is the ratio of the capacitance of a soil sample to the capacitance of air-filled space of the same volume.
XU Xingqian   +4 more
doaj   +1 more source

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