Results 31 to 40 of about 268 (261)
The Influence of the Magnetic Field Line Curvature on Wall Erosion near the Hall Thruster Exit Plane
Applied Sciences, 2023 One of the main factors that limit the lifetime of the Hall effect Thrusters (HETs) is the erosion of the acceleration channel caused by the flux of energetic ions.
Lulu Quan, Yong Cao, Bin Tian, Keyu Gong
doaj +1 more source
Evidence for Itinerant Ferromagnetic Flat Bands Producing Large Transverse Responses
Advanced Materials, EarlyView.Itinerant ferromagnetic flat bands are demonstrated in GdCo5 with a high Curie temperature of 940K, a stacked honeycomb–kagome lattice, through angle‐resolved photoemission spectroscopy and magneto‐thermoelectric measurements. These topological flat bands generate large Berry curvaturte, producing gigantic anomalous Nernst effect with record‐high ...
Susumu Minami +15 more
wiley +1 more source
Advanced Materials, EarlyView.Magnetic tunnel junctions (MTJs) using MgO tunnel barriers face challenges of high resistance‐area product and low tunnel magnetoresistance (TMR). To discover alternative materials, Literature Enhanced Ab initio Discovery (LEAD) is developed. The LEAD‐predicted materials are theoretically evaluated, showing that MTJs with dusting of ScN or TiN on ...
Sabiq Islam +6 more
wiley +1 more source
The water electrolysis Hall effect Thruster
, 2022 This study proposes operating a Hall effect Thruster (HET) on the products of in-situ water electrolysis. Oxygen is supplied to the anode and hydrogen to the cathode to mitigating poisoning. In comparison to other alternative HET propellants water is non-toxic, low cost, highly storable, and allows synergies with chemical propulsion systems.
openaire +2 more sources
Advanced Materials, EarlyView.We demonstrate a neuromorphic synapse in 2D Fe3GaTe2 flakes. The device operates via a current‐driven transformation from a skyrmion‐lattice to a stripe‐domain state, yielding a linear anomalous Hall resistance response with a tunable slope to enable multiply‐accumulate operations. Simulations confirm its viability in artificial neural networks.
Jixiang Huang +20 more
wiley +1 more source
AerospaceA collaborative inter-laboratory study was conducted to characterise the performance of the novel 250 W External Discharge Plasma Thruster (XPT) with a channel-less Hall effect-type thruster designed to address lifetime limitations and lower-power ...
Thomas F. Munro-O’Brien +3 more
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Numerical Study of Hall Thruster Plume and Sputtering Erosion
Journal of Applied Mathematics, 2012 Potential sputtering erosion caused by the interactions between spacecraft and plasma plume of Hall thrusters is a concern for electric propulsion. In this study, calculation model of Hall thruster’s plume and sputtering erosion is presented.
Li Yan +3 more
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Advanced Materials, EarlyView.TESCLA (tubular electromagnetic soft conformal linear actuator) combines liquid‐metal solenoids and compliant magnetic composites to achieve large‐stroke bidirectional actuation with continuous bending. Integrated inductance‐based self‐sensing enables proprioceptive position estimation without external sensors, providing a versatile platform for soft ...
Yeongjin Choi +3 more
wiley +1 more source
Advanced Robotics Research, EarlyView.This article introduces a soft wearable eyelid sling device incorporating a hydraulic soft artificial muscle (SAM) for achieving complete closure of an eyelid. The SAM is driven by a cam mechanism that provides a displacement profile closely matched with those of a healthy eyelid.
Patrick Pruscino +7 more
wiley +1 more source
Robust Model Predictive Control for Satellite Orbit Maintenance Using Hall Effect Thrusters [PDF]
فناوری در مهندسی هوافضاIn this article, a robust model predictive controller is designed for maintaining the satellite's low earth orbit in the presence of perturbations and uncertainties.
Masumeh kiantaj +2 more
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