Results 91 to 100 of about 4,619,415 (391)

Fluorine atom substituted aromatic polyimides: Unlocking extraordinary dielectric performance and comprehensive advantages

Giant
Low-dielectric polymers face prominent development challenges at high frequency. Particularly, the relationship between the high-frequency dielectric loss and polymer structures remains not clear enough.
Weifeng Peng, Huanyu Lei, Bingyu Zou, Luhao Qiu, Yaohao Song, Xiang Huang, Fan Ye, Feng Bao, Mingjun Huang   +8 more
doaj   +1 more source

The influence of the partially europium substitution on the AC electrical properties of BiSr2CaCu2O6.5 ceramics [PDF]

Processing and Application of Ceramics, 2019
In this work, EuxBi1-xSr2CaCu2O6.5 (where x = 0, 0.3, 0.5) samples were prepared by solid-state reaction method and sintered at 950 °C for 24 h. The structural characterizations were done by X-ray diffraction, X-ray fluorescence, scanning electron ...
Zeynep Güven Özdemir, Mehmet Kılıç, Yasar Karabul, Seda Erdönmez, Orhan Içelli   +4 more
doaj   +1 more source

Microstructure and dielectric properties of BF–PFN ceramics with negative dielectric loss

Journal of Materials Science: Materials in Electronics, 2018
Multiferroics with negative value of dielectric constant are very promising materials because of their modern applicability. These materials can be used as materials for the construction of electromagnetic radiation shields.
J. Bartkowska, D. Bochenek
semanticscholar   +1 more source

Structurally Colored Physically Unclonable Functions with Ultra‐Rich and Stable Encoding Capacity

Advanced Functional Materials, Volume 35, Issue 12, March 18, 2025.
This study reports a design strategy for generating bright‐field resolvable physically unclonable functions with extremely rich encoding capacity coupled with outstanding thermal and chemical stability. The optical response emerges from thickness‐dependent structural color formation in ZnO features, which are fabricated by physical vapor deposition ...
Abidin Esidir, Miaoning Ren, Sami Pekdemir, Mustafa Kalay, Nilgun Kayaci, Nail Gunaltay, Hakan Usta, Xian Huang, Mustafa Serdar Onses   +8 more
wiley   +1 more source

Modified halloysite nanotube filled polyimide composites for film capacitors: high dielectric constant, low dielectric loss and excellent heat resistance

RSC Advances, 2018
In this work, halloysite nanotubes (HNTs) were chosen as the fillers and high performance polyimide (PI) as the matrix to form a series of dielectric composite materials with high dielectric constant, low dielectric loss and excellent heat resistance ...
Tianwen Zhu, Chao Qian, Weiwen Zheng, Runxin Bei, Siwei Liu, Zhenguo Chi, Xudong Chen, Yi Zhang, Jia-rui Xu   +8 more
semanticscholar   +1 more source

Spectral theory of a Neumann-Poincar\'e-type operator and analysis of anomalous localized resonance II [PDF]

, 2012
If a body of dielectric material is coated by a plasmonic structure of negative dielectric constant with nonzero loss parameter, then cloaking by anomalous localized resonance (CALR) may occur as the loss parameter tends to zero. The aim of this paper is
Ammari, Habib, Ciraolo, Giulio, Kang, Hyeonbae, Lee, Hyundae, Milton, Graeme W.   +4 more
core   +2 more sources

Ionic Liquid‐Based Reversible Metal Electrodeposition for Adaptive Radiative Thermoregulation Under Extreme Environments

Advanced Functional Materials, EarlyView.
A wideband tunable electrochromic device with dynamic thermal emissivity control is demonstrated. The system enables adaptive heat regulation via electrochemically modulated silver deposition, achieving efficient cooling and heating states. The flexible design ensures mechanical robustness under bending conditions, making it promising for portable and ...
Jiawei Liang, Chenxi Sui, Jiacheng Tian, Genesis Higueros, Ting‐Hsuan Chen, Ronghui Wu, Pei‐Jan Hung, Yang Deng, Natalie Rozman, Willie John Padilla, Po‐Chun Hsu   +10 more
wiley   +1 more source

Morphological and Optical Characteristics of Chitosan(1−x):Cuox (4 ≤ x ≤ 12) Based Polymer Nano-Composites: Optical Dielectric Loss as an Alternative Method for Tauc’s Model

Nanomaterials, 2017
In this work, copper (Cu) nanoparticles with observable surface plasmonic resonance (SPR) peaks were synthesized by an in-situ method. Chitosan host polymer was used as a reduction medium and a capping agent for the Cu nanoparticles.
S. B. Aziz
semanticscholar   +1 more source

Surface participation and dielectric loss in superconducting qubits

, 2015
We study the energy relaxation times ($T_1$) of superconducting transmon qubits in 3D cavities as a function of dielectric participation ratios of material surfaces.
C. Axline, C. Wang, L. Frunzio, M. H. Devoret, R. J. Schoelkopf, T. Brecht, Y. Chu, Y. Y. Gao   +7 more
core   +1 more source

Analyzing Electronic Excitations and Exciton Binding Energies in Y6 Films

Advanced Functional Materials, EarlyView.
The Y6 molecule is used for increasing the efficiency of organic solar cells. The exciton binding energy is calculated for ensembles of Y6 molecules that are representative of the typically used films. The calculations show that the excitons typically spread out over many molecules.
Sahar Javaid Akram, Sophie Meißner, Stephan Kümmel   +2 more
wiley   +1 more source