Results 91 to 100 of about 2,175 (306)
Numerical simulation of electrical problems in a vacuum disjuntor [PDF]
, 2015 A vacuum circuit breaker is a device that allows the cutting of electrical power. This device consists essentially of two electrodes, one of them being mobile and is subject to a mechanical force produced by a spring, giving rise to the contact between
Clain, Stéphane +1 more
core
Improved micro-contact resistance model that considers material deformation, electron transport and thin film characteristics [PDF]
, 2009 This paper reports on an improved analytic model forpredicting micro-contact resistance needed for designing microelectro-mechanical systems (MEMS) switches. The originalmodel had two primary considerations: 1) contact materialdeformation (i.e.
Coutu, Ronald A. +2 more
core +1 more source
Advanced Robotics Research, EarlyView.This article presents dielectric elastomer switch (DES) materials, based on composite thin films. Alignment of graphite flakes due to their physical confinement within the thin films lead to much stronger piezoresistive responses than bulk composites, while their durability exceeds that of conventional liquid‐based DES materials.
Lingyu Liu +3 more
wiley +1 more source
Design and Experimental Testing of a Moving Coil Actuator with Compensation Coils
CSEE Journal of Power and Energy SystemsHydrogen-powered electric aircraft have attracted significant interests aiming to achieve decarbonization targets. Onboard DC electric networks are facing great challenges in DC fault protection requirements.
Boyuan Yin +7 more
doaj +1 more source
Advanced Science, EarlyView.This study develops gallium‐doped V2C MXene nanozymes (Ga‐V2C) to treat acetaminophen‐induced liver injury through multi‐death pathway blockade and hepatocyte regeneration. Unlike conventional single‐target therapies like N‐acetylcysteine, Ga‐V2C nanozymes enable oxidative stress suppression, apoptosis, and ferroptosis inhibition, and enhanced ...
Xiaopeng Cai +13 more
wiley +1 more source
EnergiesThe use of vacuum-hybrid DC circuit breaking methods allows the short-circuit current to be switched off in a shorter time, resulting in a reduction in the arc burning time. This requires the use of a drive, such as the Thomson Coil Actuator TCA, capable
Michal Rodak, Piotr Borkowski
doaj +1 more source
Rapidly pulsed, high intensity, incoherent light source [PDF]
, 1974 A rapid pulsing, high intensity, incoherent light is produced by selectively energizing a plurality of discharge lamps with a triggering circuit. Each lamp is connected to a capacitor, and a power supply is electrically connected to all but one of the ...
Brandhorst, H. W., Jr. +1 more
core +1 more source
Ecosystem‐Centered Robot Design: Toward Ecoresorbable Sustainability Robots (ESRs)
Advanced Science, EarlyView.Robots exploring natural ecosystems can support monitoring and conservation, but must adopt ecosystem‐centered design to avoid pollution, waste, and damage. This review proposes guidelines for co‐designing ecoresorbable sustainability robots (ESRs), uniting materials, robotics, and ecological contexts in a single framework.
Tülin Yılmaz Nayır +4 more
wiley +1 more source
Analysis and Optimization of Contact Material Ablation under the Cumulative Effect of the Number of Breakings of OLTC. [PDF]
Materials (Basel), 2023 Zhang M, Tan Y, Yang C, Deng J, Xie Z.
europepmc +1 more source
A Self‐Organized Liquid Reaction Container for Cellular Memory
Advanced Science, EarlyView.How cells restore epigenetic information lost during replication is not known. This work proposes a mechanism based on the formation of biomolecular condensates. These condensates are induced by the chromosome itself and serve as reaction vessels for reconstructing missing epigenetic markers.
Sukanta Mukherjee +4 more
wiley +1 more source