Results 31 to 40 of about 24,792 (216)

Microstructure‑Dependent Phase Transformations Under High‑Pressure Laser Heating in Additively Manufactured AlCrFe2Ni2

Advanced Engineering Materials, EarlyView.
Additively manufactured AlCrFe2Ni2 with contrasting BCC/B2‐dominant and lamellar FCC + BCC/B2 microstructures exhibits the same pressure‐induced BCC/B2 → HCP transformation. Under laser heating at high pressure, HCP is destabilized, and a cubic BCC/B2 + FCC assemblage is recovered, while the lower‐scan‐speed microstructure transforms at a lower ...
Raimundas Sereika, Hunter Kantelis, Yogesh K. Vohra, Shengbiao Zhang, Wuxian Yang, Wen Chen   +5 more
wiley   +1 more source

High frequency dielectric relaxation in lanthanum modified PbTiO3 ferroelectric ceramics

Materials Research, 2004
Dielectric measurements of lanthanum modified lead titanate ceramics were carried out in a frequency and temperature range of 70 ´ 10(6)Hz - 2 ´ 10(9)Hz and 300 K - 420 K, respectively. Dielectric relaxation appears around 7 ´ 10(8)Hz at room temperature,
Guerra José de los Santos, Eiras José Antonio   +1 more
doaj  

Dielectric relaxations in PVDF/BaTiO3 nanocomposites

eXPRESS Polymer Letters, 2008
The present work aims at the study of molecular relaxations in PVDF/BaTiO3 nanocomposites using broadband dielectric spectroscopy. The nanocomposites of PVDF with BaTiO3 (10–30% by wt%) are prepared using simple melt mixing method.
doaj   +1 more source

Enhancing Low‐Temperature Performance of Sodium‐Ion Batteries via Anion‐Solvent Interactions

Advanced Functional Materials, EarlyView.
DOL is introduced into electrolytes as a co‐solvent, increasing slat solubility, ion conductivity, and the de‐solvent process, and forming an anion‐rich solvent shell due to its high interaction with anion. With the above virtues, the batteries using this electrolyte exhibit excellent cycling stability at low temperatures. Abstract Sodium‐ion batteries
Cheng Zheng, Qian Yao, Yanan Sun, Hongyu Lv, Zhongchao Bai, Guoliang Zhang, Nana Wang, Jian Yang   +7 more
wiley   +1 more source

Study of Relaxations in Epoxy/Rubber Composites by Thermally Stimulated Depolarization Current and Dielectric Spectroscopy

Frontiers in Chemistry, 2022
Liquid rubber toughened epoxy resins are widely used in electrical equipment and electronic packaging. Previous studies have only investigated the relaxation process of epoxy resins through dielectric spectroscopy.
Chuang Wang, Gang Zhou, Weiyu Zhu, Chi Chen, Yuwei Fu, Zaiqin Zhang, Hui Li   +6 more
doaj   +1 more source

All‐in‐One Analog AI Hardware: On‐Chip Training and Inference with Conductive‐Metal‐Oxide/HfOx ReRAM Devices

Advanced Functional Materials, EarlyView.
An all‐in‐one analog AI accelerator is presented, enabling on‐chip training, weight retention, and long‐term inference acceleration. It leverages a BEOL‐integrated CMO/HfOx ReRAM array with low‐voltage operation (<1.5 V), multi‐bit capability over 32 states, low programming noise (10 nS), and near‐ideal weight transfer.
Donato Francesco Falcone, Victoria Clerico, Wooseok Choi, Tommaso Stecconi, Folkert Horst, Laura Bégon‐Lours, Matteo Galetta, Antonio La Porta, Nikhil Garg, Fabien Alibart, Bert Jan Offrein, Valeria Bragaglia   +11 more
wiley   +1 more source

Dielectric relaxation dynamics and hydrogen bonding interactions reveal the molecular association mechanisms in binary mixtures of 3-chloroaniline and 1-methoxy-2-propanol at 298 K

Discover Chemistry
The complex dielectric spectra of binary mixtures of 3-chloroaniline (3-CA) and 1-methoxy-2-propanol (PGME) were measured at 298 K over a frequency range from 10 MHz to 30 GHz for eleven different volume compositions.
Venkatesh Vispute, Mandar Gaikwad, Nitin Garad, Pramod Konmare, Ashok Kumbharkhane, Bhupesh Nemmaniwar   +5 more
doaj   +1 more source

Dielectric relaxation response of electrical insulating liquids under different natures of thermal stress

Journal of Materials Research and Technology, 2023
This study focuses on the dielectric relaxation response of insulating liquids based on mineral oil and synthetic ester in a thermal field.The research also offers the dielectric relaxation response of the magnetic nanofluid based on the investigated ...
Peter Havran, Roman Cimbala, Juraj Kurimský, Michal Rajňák, Bystrík Dolník, Dušan Medveď, Jozef Király   +6 more
doaj   +1 more source

Counterion Dependent Side‐Chain Relaxation Stiffens a Chemically Doped Thienothiophene Copolymer

Advanced Functional Materials, EarlyView.
Oxidation of a thienothiophene copolymer, p(g3TT‐T2), via different doping strategies and dopant molecules resulted in materials with similar oxidation levels and a high electrical conductivity of ≈100 S cm−1. However, mechanical properties varied significantly, with sub‐glass transition temperatures and elastic moduli spanning from –44°C to –3°C and ...
Mariavittoria Craighero, Meghna Jha, Elsa Veronica Flores‐Vela, Joost Kimpel, Andreas Schaefer, Jiali Guo, Jesika Asatryan, Alberto Peinador Veiga, Shuichi Haraguchi, Per‐Anders Carlsson, Jaime Martín, Mariano Campoy‐Quiles, Christian Müller   +12 more
wiley   +1 more source

Cole-Cole dielectric relaxation

Технологія та конструювання в електронній апаратурі, 2004
A model of the microstructure of disordered media exhibiting non-exponential relaxation has been constructed. The proposed model is based on a fractal approach to the structuring of the medium and the identification of hierarchical levels of short-range ...
V. V. Novikov, О. А. Komkova
doaj