Results 201 to 210 of about 940,617 (259)

Interfacial polarization-induced high-k polymer dielectric film for high-performance triboelectric devices

Nano Energy, 2021
Output performance of triboelectric devices critically depends on their surface charge density that is greatly influenced by the dielectric constant of material.
Minsoo P. Kim, C. Ahn, Youngsu Lee, Kyoung-Oak Kim, Jonghwa Park, Hyunhyub Ko   +5 more
semanticscholar   +1 more source

Enhancing Interfacial Polarization through Electron Accumulation in Carbon Nanotube-Encapsulated α-Fe2O3 for Highly Efficient Microwave Absorption.

ACS Nano
Interface polarization (one of the slow polarizations) is considered the primary mechanism driving microwave absorption (MA), but limitations in material composition and microstructure design often lead to weak interfacial polarization relaxation.
Hengdong Ren, Chensi Zhou, Ka Wang, Ximing Zhang, Lei Feng, Wenqing Wei, Yuqing Sun, Yukang Liu, Jun Dai, Xiaobing Xu, Zhiyong Zhang, Xinglong Wu   +11 more
semanticscholar   +1 more source

Highly Enhanced Triboelectric Performance from Increased Dielectric Constant Induced by Ionic and Interfacial Polarization for Chitosan Based Multi‐Modal Sensing System

Advanced Functional Materials, 2021
The coexistence of increasingly severe environmental concerns and bio‐signal sensing systems drives the development of environmental affinity and energy harvesting materials.
J. Sun, H. Choi, Seok-Bae Cha, Dahye Ahn, Min-Kwan Choi, Sangki Park, Yujang Cho, Jiwoo Lee, Tae-Eon Park, Jong‐Jin Park   +9 more
semanticscholar   +1 more source

Interfacial relaxation via s-polarized electroreflectance

Journal of Electroanalytical Chemistry and Interfacial Electrochemistry, 1987
Abstract The problem of the microscopic interpretation of plasma electroreflectance is revisited. A simple analytical expression is derived for electroreflectance of s-polarized light on the basis of an extension of Aspnes and McIntyre's model with no account of electromodulation of surface interband transitions.
A.A. Kornyshev, M.I. Urbakh
openaire   +1 more source

Ambient‐Pressure‐Dried Aerogel Amplifies Interfacial Polarization Toward High‐Efficiency Microwave Absorption

Advanced Functional Materials
The existing polarization loss‐dominated electromagnetic wave (EMW) absorbing materials are predominantly composed of powders, however, the challenges of efficiently dispersing powders in matrix exist, the realization of structurally and functionally ...
Jingpeng Lin, Jiurong Liu, Kaixuan Zhang, Yanli Deng, Wenrui Che, Xiaoyu Pang, Qingdong Zhang, Weiqi Cai, Z. Zeng, Na Wu   +9 more
semanticscholar   +1 more source

Interfacial Polarization and Dual Charge Transfer Induced High Permittivity of Carbon Dots‐Based Composite as Humidity‐Resistant Tribomaterial for Efficient Biomechanical Energy Harvesting

Advanced Energy Materials, 2021
Tribopositive, scalable, and biocompatible materials are highly desired for high‐performance triboelectric nanogenerators (TENGs). In this study, polyethylenimine (PEI) functionalized N‐doped carbon dots (NCDs‐PEI) are synthesized and a novel approach to
Zihua Li, Bingang Xu, Jing Han, Junxian Huang, K. Chung   +4 more
semanticscholar   +1 more source

Enhanced Interfacial Polarization Loss of FeS/MoS2@N‐Doped Carbon Sandwich‐Walled Nanotubes Enables High‐Performance Electromagnetic Wave Absorption

Advanced Functional Materials
Multiple interfaces and hollow structures are vital to high‐performance electromagnetic wave (EMW) absorption of absorbers. However, it remains difficult to construct and tune such structures, and there is limited understanding regarding the ...
Yu Shen, Ziqian Ma, Feng Yan, Chunling Zhu, Xitian Zhang, Yujin Chen   +5 more
semanticscholar   +1 more source

The Interfacial Polarization-Induced Electrorheological Effect

Journal of Colloid and Interface Science, 1998
The Wagner theory, which describes the interfacial polarization in heterogeneous systems, was employed to model the electrorheological (ER) effect under the presumption that the shear stress increment is induced by the interfacial polarization. The currently observed experimental facts, such as the yield stress of some ER fluids, decreases with the ...
openaire   +2 more sources

Interfacial Polarization Loss Improvement Induced by the Hollow Engineering of Necklace‐like PAN/Carbon Nanofibers for Boosted Microwave Absorption

Advanced Functional Materials
Rational manipulation of composition and microstructure design is recognized as an effective pathway to realize multifunctional high‐performance microwave absorber. In this work, necklace‐like hollow polyacrylonitrile (PAN)/carbon nanofibers are designed
Junxiong Xiao, Beibei Zhan, Mukun He, Xiaosi Qi, Xiubin Gong, Jing-Liang Yang, Yunpeng Qu, Junfei Ding, Wei Zhong, Junwei Gu   +9 more
semanticscholar   +1 more source

Vacancy‐Triggered Active Modulation on the Thermal Response of Interfacial Polarization Enables Highly Stable Broad‐Temperature Electromagnetic Wave Absorption

Advanced Functional Materials
Maintaining stable electromagnetic wave absorption across wide temperature ranges hinges on utilizing the negative temperature response of interfacial polarization loss to compensate for increasing conductive loss at elevated temperatures.
Xiaoke Lu, Xin Li, Kun Wei, Ziwei Yang, Weizhuo Gao, Hongcheng Xu, Chuanyu Zhang, Hailong Xu, Hongjing Wu, Xueyong Wei   +9 more
semanticscholar   +1 more source