Results 1 to 10 of about 5,235,702 (288)

Super Dielectric Materials. [PDF]

open access: yesMaterials (Basel), 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 ...
Fromille S, Phillips J.
europepmc   +7 more sources

Dielectric resonator bandstop filters [PDF]

open access: yes, 2011
Dielectric resonators have been widely employed in wireless and satellite communication systems due to their inherently large Q allowing them to fashion low loss and narrow bandwidth filters.
Chan, Richard Kayip
core   +6 more sources

Development of lead-free thin-film dielectrics for capacitor applications [PDF]

open access: yes, 2010
This PhD project aims to develop lead-free thin-film dielectric materials for fixed value, voltage tunable and high-k zipping variable capacitors using growth techniques that can be scaled for silicon batch fabrication.
Darbyshire, David Anthony
core   +7 more sources

Boosting the Humidity Performances of Na0.5BixTiO3 by Tuning Bi Content

open access: yesNanomaterials, 2022
In the field of humidity sensors, a major challenge is how to improve the sensing performance of existing materials. Based on our previous work on Na0.5Bi0.5TiO3, a facile strategy of tuning the Bi content in the material was proposed to improve its ...
Xiaoqi Xuan   +5 more
doaj   +1 more source

Humidity Sensitivity Behavior of CH3NH3PbI3 Perovskite

open access: yesNanomaterials, 2022
The CH3NH3PbI3 (MAPbI3) powders were ground by PbI2 and CH3NH3I prepared by ice bath method. The humidity sensitive properties of an impedance-type sensor based on MAPbI3 materials were systematically studied.
Xuefeng Zhao   +7 more
doaj   +1 more source

Greatly enhanced permittivity in BaTiO3-epoxy dielectric composites with improved connectivity of ceramic phase

open access: yesJournal of Materiomics, 2021
BaTiO3-epoxy dielectric composites were prepared by curing the liquid epoxy monomer that infiltrated into the partially-sintered BaTiO3 porous ceramics.
Meng Cao   +4 more
doaj   +1 more source

Humidity Sensing Properties of (In+Nb) Doped HfO2 Ceramics

open access: yesNanomaterials, 2023
(In+Nb) co-doped HfO2 ceramics, Hf1-x(In0.5Nb0.5)xO2 (x = 0, 0.005, 0.05, and 0.1), were prepared via a solid-state reaction method. Dielectric measurements reveal that the environmental moisture has an obvious influence on the dielectric properties of ...
Jiahao Yao   +5 more
doaj   +1 more source

Oxygen-vacancy-ordering-induced metal-insulator transition in MgO single crystals

open access: yesResults in Physics, 2022
Dielectric properties of MgO single crystal were investigated in the temperature range of 300–1100 K and frequency range of 4x101-106 Hz. The sample exhibits intrinsic dielectric response below 400 K, two oxygen-vacancy-related phase transitions around ...
Chao Cheng   +6 more
doaj   +1 more source

Synergistic Piezo-Photocatalysis of BiOCl/NaNbO3 Heterojunction Piezoelectric Composite for High-Efficient Organic Pollutant Degradation

open access: yesNanomaterials, 2022
Piezo-photocatalytic technique is a new-emerging strategy to alleviate photoinduced charge recombination and thus enhance catalytic performance. The heterojunction construction engineering is a powerful approach to improve photocatalytic performance ...
Li Li   +5 more
doaj   +1 more source

Electric-field structuring of piezoelectric composite materials [PDF]

open access: yes, 1999
Piezoelectric composite materials, consisting of a ferroelectric ceramic in an electrically-inactive polymer matrix, have been shown to greatly outperform single phase materials for certain applications.
Wilson, Stephen A.
core   +7 more sources

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