Results 91 to 100 of about 2,580 (293)

A torsional thrust stand for electric propulsion thruster [PDF]

open access: yesAIP Advances
A torsional thrust stand with heavy load and stability has been developed for electric propulsion thruster testing under vacuum conditions. The thrust measurement principle is based on torsional pendulum mechanics combined with capacitive displacement ...
H. Zhang   +5 more
doaj   +1 more source

Hybrid Microdiscs for Magnetically Induced Non‐Cytotoxic Thermal Actuation and Programmable Biomolecule Delivery

open access: yesAdvanced Functional Materials, EarlyView.
Hybrid magnetic microdiscs with customizable size and composition are engineered through refined photolithography and LbL assembly. Embedded Fe3O4 nanoparticles enable localized, non‐cytotoxic heating, while protein cargos can be incorporated in tunable quantities.
Daniela Iglesias‐Rojas   +13 more
wiley   +1 more source

Discussion on Rayleigh equation obtained for a Hall thruster plasma with dust

open access: yesJournal of Theoretical and Applied Physics, 2018
The present study focuses on the Rayleigh equation derived in the case of a Hall thruster plasma having dust contamination, produced near the exit of the channel due to the finite divergence of the accelerated ions and the sputtering of the walls. In the
Jasvendra Tyagi   +2 more
doaj   +1 more source

Scalable Thermal Engineering via Femtosecond Laser‐Direct‐Written Phononic Nanostructures

open access: yesAdvanced Functional Materials, EarlyView.
This study demonstrates that femtosecond laser‐induced periodic surface structures (fs‐LIPSS) can function as phononic metasurfaces, reducing thermal conductivity below the plain thin‐film limit. Phonon Monte Carlo analysis reveals that the periodic structures restrict phonon mean free paths.
Hiroki Hamma   +4 more
wiley   +1 more source

Progress in Experimental Study of Plume Plasma Discharge Characteristics of the Hollow Cathode

open access: yes气体物理
With the continuous maturation and sustained application of electric propulsion technology, electric propulsion is becoming the preferred choice of space propulsion for deep space exploration missions with its high specific impulse advantage. Among them,
Jintao JIA, Long MIAO, Yugan LIAO
doaj   +1 more source

Exciton‐Polaritons in Nanoscale Metal‐Organic Frameworks: A Platform for the Reversible Modulation of Strong Light‐Matter Coupling via the Chemical Environment

open access: yesAdvanced Functional Materials, EarlyView.
Strong exciton‐photon coupling is achieved by integrating porphyrin ligand‐based MOF nanoparticles in optical cavities, as evidenced by pronounced polariton branch anticrossing. The porous nature of the resonator enables precise, reversible tuning via vapor pressure, unlocking unprecedented chemical‐environment controlled dynamic polaritonic platforms ...
Beatriz de Sola‐Báez   +7 more
wiley   +1 more source

Quantification of the Lifetime and Reliability of Dual-Mode Ion Thrusters

open access: yesJournal of Aerospace Technology and Management, 2022
An approach to quantify the lifetime and reliability of dual-mode ion thruster is presented based on coupling analyses of thruster failure modes, throttle levels, life models, input uncertainties, and throttle profiles.
Xueer Zhang, Tianping Zhang, Detian Li
doaj  

Research on the keeper electrode’s sputtering mechanism of the ion thruster [PDF]

open access: gold, 2021
Juanjuan Chen   +5 more
openalex   +1 more source

Pixelation‐Free, Monolithic Iontronic Pressure Sensors Enabling Large‐Area Simultaneous Pressure and Position Recognition via Machine Learning

open access: yesAdvanced Functional Materials, EarlyView.
A pixelation‐free, monolithic iontronic pressure sensor enables simultaneous pressure and position sensing over large areas. AC‐driven ion release generates spatially varying impedance pathways depending on the pressure. Machine learning algorithms effectively decouple overlapping pressure–position signals from the multichannel outputs, achieving high ...
Juhui Kim   +10 more
wiley   +1 more source

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