Results 61 to 70 of about 179,026 (288)

Holographic Butterfly Effect at Quantum Critical Points

, 2017
When the Lyapunov exponent $\lambda_L$ in a quantum chaotic system saturates the bound $\lambda_L\leqslant 2\pi k_BT$, it is proposed that this system has a holographic dual described by a gravity theory.
Ling, Yi, Liu, Peng, Wu, Jian-Pin
core   +1 more source

Optoelectronic Synaptic Devices Using Molecular Telluride Phase‐Change Inks for Three‐Factor Learning

Advanced Functional Materials, EarlyView.
Optoelectronic synaptic devices based on solution‐processed molecular telluride GST‐225 phase‐change inks are demonstrated for three‐factor learning. A global optical signal broadcast through a silicon waveguide induces non‐volatile conductance updates exclusively in locally electrically flagged memristors.
Kevin Portner, Dhananjeya Kumaar, Giacomo Torti, Killian Keller, Till Zellweger, Florian M. Schenk, Christoph Weilenmann, Daniel Chelladurai, Vara Prasad Jonnalagadda, Ghazi Sarwat Syed, Vanessa Wood, Jürg Leuthold, Alexandros Emboras, Maksym Yarema, Mathieu Luisier   +14 more
wiley   +1 more source

Engineering Strategies for Stable and Long‐Life Alkaline Zinc‐Based Flow Batteries

Advanced Functional Materials, EarlyView.
Alkaline zinc‐based flow batteries face persistent challenges from unstable zinc deposition, including dendrite growth, passivation, corrosion, and hydrogen evolution, which severely limit cycling stability. Current research addresses these issues through coordinated electrode structuring, electrolyte regulation, and membrane design to control zinc ...
Yuran Bai, Xiaoyu Huo, Xin Long, Enkang Fu, Xusong Gong, Lei Wei, Liang An   +6 more
wiley   +1 more source

Effect of Nano Al2O3 Doping on Thermal Aging Properties of Oil-Paper Insulation

Energies, 2018
The thermal aging property of oil-paper insulation is a key factor affecting the service life of transformers. In this study, nano-Al2O3 was added to insulating paper to improve its anti-thermal aging property and delay the aging rate of the insulating ...
Ningchuan Liang, Ruijin Liao, Min Xiang, Yang Mo, Yuan Yuan   +4 more
doaj   +1 more source

Studies on Heating of Electrical Insulating Paper

JAPAN TAPPI JOURNAL, 1959
Mechanical behavior of the paper for power cable under dry condition was studied. The samples w ere impregnated with insulating-oil or microcrystaline wax after drying, and tensile strength, elongation, folding endurance, bursting strength and tear resistance were measured.(1) Comparing the mechanical strength under dry condition with that RH 65 ...
Yuichiro Take, Yutaka Suzuki, Ryosuke Matsunaga   +2 more
openaire   +3 more sources

Toward Stable Multivalent Metal Batteries: Understanding the Interfacial Chemistry for Magnesium and Calcium Metal Anodes

Advanced Functional Materials, EarlyView.
Interphase chemistry governs the stability of multivalent metal batteries. We summarize state‐of‐the‐art developments in calcium and magnesium metal batteries by focusing on the correlation among electrolytes, interphase layers, and the electrochemical performance of corresponding metal anodes.
Huijun Lin, Qi Meng, Juncai Long, Chuheng Cao, Zheng‐Long Xu   +4 more
wiley   +1 more source

Analyzing the Impact of Thermal Aging on the Dielectric and Physicochemical Performance of Transformer Insulating Papers Impregnated With Natural Monoesters

Engineering Reports
The application of alternative liquids in power transformers, instead of traditionally used mineral oils, is increasing due to safety and environmental reasons.
Gerard Ombick Boyekong, Gabriel Ekemb, Emeric Tchamdjio Nkouetcha, Ghislain Mengata Mengounou, Adolphe Moukengue Imano   +4 more
doaj   +1 more source

Advancing thermal stability in natural ester oil-paper insulation systems via precision nanostructuring with parylene films: Experimental and molecular-level comprehensive assessment

Polymer Testing
The oil-paper insulation system in eco-friendly fire-retardant transformers depends on hydrophilic natural ester insulating oil. Moisture within the system synergistically interacts with aging, worsening oil-paper insulation degradation and hastening ...
Feipeng Wang, Jian Zhou, Linyang Dan, Yihua Qian, Shi Li, Issouf Fofana, Massimo Pompili, Jian Li   +7 more
doaj   +1 more source

Frequency Diagnostics of Insulating System of Power Transformers

Electrical, Control and Communication Engineering, 2020
The paper presents experimental diagnostics of the oil-paper insulating system of power transformers using progressive frequency method. The first part of the paper deals with the basic information about diagnostics of power oil transformers.
Gutten Miroslav, Korenciak Daniel, Brncal Peter, Jarina Roman   +3 more
doaj   +1 more source

Multi‐Scale Interface Engineering of MXenes for Multifunctional Sensory Systems

Advanced Functional Materials, EarlyView.
MXenes, as two‐dimensional transition metal carbides and nitrides, demonstrate remarkable capabilities for multifunctional sensing applications. This review systematically examines multi‐scale interface engineering approaches that enhance sensing performance, enable diverse detection functionalities, and improve system‐level compatibility in MXene ...
Jiaying Liao, Sin‐Yi Pang, Jianhua Hao
wiley   +1 more source