Results 71 to 80 of about 28,921 (265)

Disentangling Bulk and Surface Contributions to Charge and Discharge Fading in High‐Voltage LiCoO2

Advanced Functional Materials, EarlyView.
High‐voltage operation of LiCoO2 accelerates capacity fading through bulk and surface degradation. By introducing a LiTaO3 coating to selectively suppress surface degradation, bulk and surface contributions to charge and discharge fading are decoupled.
Hyungjoon Moon, Sangbin Park, Jaewoo Jung, Seongeun Lee, Chanwoo Jung, Min‐Sik Park, Won‐Sub Yoon   +6 more
wiley   +1 more source

Laboratory measurement of dielectric constant and loss tangent of Indian rock samples

Annals of Geophysics, 1980
The data on dielectric properties of Indian rock samples are very<br />sparsely reported in the literature. Keeping this in view, we have carried<br />out laboratory measurements of the dielectric constant and loss tangents<br />of some
MAHANDRA P. SINGH, RAMESH P. SINGH, TARKESHWAR LAL   +2 more
doaj   +1 more source

Memristive‐Gated RC‐Delay Synaptic Transistors for Time‐Encoded Analog in‐Memory Computing

Advanced Functional Materials, EarlyView.
A Memristive‐Gated Transistor for Time‐Encoded Analog In‐Memory Computing — By exploiting the RC delay of a self‐rectifying interface‐type memristor, nonlinear I–V distortion is structurally bypassed, enabling 3‐bit nonvolatile memory, spike‐timing‐based analog encoding, and hardware‐calibrated reservoir‐computing validation within a unified device ...
Yun‐Seo Shin, Eunjoo Yoo, Ki‐Hoon Son, Hyun‐Sik Kim, Dae‐Hee Han, Jeong Hyeon Son, Seung Hwan Lee, Hong‐Sub Lee   +7 more
wiley   +1 more source

Gradient‐Conductivity Architecture Enables Synchronous Enhancement of Sensitivity and Detection Range in Multifunctional All‐Paper Sensors

Advanced Functional Materials, EarlyView.
A gradient‐engineered all‐paper sensor is fabricated by integrating MXene and in situ grown AgNPs within hierarchical cellulose networks. The device breaks the sensitivity–detection range trade‐off through cascaded conductive pathways, enabling ultrahigh pressure sensitivity, humidity–pressure decoupled dual‐mode sensing, and outstanding EMI shielding,
Ao Li, Jun Xu, Dezhong Xu, Zhaohui Zhang, Jiyi Li, Daxian Cao, Kefu Chen, Mizi Fan   +7 more
wiley   +1 more source

Dielectric Response Characteristics and a Preliminary Ice-Type Discrimination Framework for Ice Accretion on High-Voltage Transmission Lines

Energies
Atmospheric ice accretion on transmission lines threatens the safe operation of power systems, whereas existing monitoring methods mainly focus on ice thickness, load, or morphology and provide limited material-related information for distinguishing ice ...
Junhua He, Hualong Zheng
doaj   +1 more source

MEASUREMENT OF RF PCB DIELECTRIC PROPERTIES AND LOSSES

Progress In Electromagnetics Research Letters, 2008
This paper presents the calculations of transmission line loss factor by extracting from the Q-factor measurement of the quarterwavelength open stub resonators over the designed frequency and other resonant frequencies. A comparison of the loss factor of the design frequency with other resonant frequencies of each of the stub’s quarter-wave resonances ...
Yun-Hsih Chou, Ming-Jer Jeng, Yang-Han Lee, Yih-Guang Jan   +3 more
openaire   +1 more source

Reservoir‐Driven Neuromorphic Computing Based on Composite Rare‐Earth/Transition Metal Oxide Memristor

Advanced Functional Materials, EarlyView.
A defect‐engineered Ag/Gd2O3:Nb2O5/Pt rare earth composite oxide memristor enables stable multilevel reservoir states through pulse driven conductance modulation. Experimentally measured device responses are incorporated into a device aware reservoir computing framework for CIFAR‐100 image classification, highlighting the potential of rare earth ...
Hammad Ghazanfar, Haider Abbas, Muhammad Rabeel, Honggyun Kim, Ghulam Dastgeer, Muhammad Nasim, Furqan Zahoor, Yawar Abbas, Waqas Ahmad, Deok‐kee Kim   +9 more
wiley   +1 more source

Electrical and dielectric properties of sprayed tungsten oxide thin films

Next Materials
In the present work, the electrical and dielectric properties of tungsten-oxide thin films have been investigated. The tungsten-oxide films were prepared using the spray pyrolysis technique using ammonium par paratungstate salt.
M.M. Althubayti, Ali Abdel-Daiem, Moustapha Farghal, Aicha Loucif, Mohammed Salah Aida   +4 more
doaj   +1 more source

Programmable Soft Actuator with Multi‐Responsiveness Based on Conductive MOF‐Liquid Crystal Polymer Composite

Advanced Functional Materials, EarlyView.
A sequential dual‐alignment strategy independently programs the orientation of conductive metal‐organic framework (c‐MOF) microrods and liquid crystals within a composite film. This approach creates an asymmetric bilayer structure that enables precise, multi‐responsive actuation.
Taegyun Hong, Geunho Kim, Changjae Lee, Sarang Lee, Jesse G. Park, Dong Ki Yoon   +5 more
wiley   +1 more source

A review of microwave dielectric ceramics: From fundamental mechanisms and property regulation to advanced preparation, applications, and data-driven discovery

Journal of Advanced Ceramics
Microwave dielectric ceramics (MWDCs) are pivotal to modern wireless communication systems, with their performance governed by three key parameters: relative dielectric constant (εr), Q×f value (product of quality factor Q (reciprocal dielectric loss ...
Hongyu Yang, Chuntao Ou, Huan Liu, Lei Li, Hua-ao Sun, Guangran Lin, Wanghuai Zhu, Feng Shi, Weijia Guo, Weijia Luo, Zhenxing Yue, Ying Tang, Jie Li, Huaicheng Xiang, Weishuang Fang, Huixing Lin, Junfeng Yang, Liang Fang, Muhammad Adnan Munir, Jing Guo, Kaixin Song, Jincheng Qin, Zhifu Liu, Zhichao Hu, Enzhu Li, Hong Wang   +25 more
doaj   +1 more source