Results 121 to 130 of about 23,746 (299)

Impact of Oxygen Plasma Pre‐Treatment on Thermal Oxidation and Reliability of SiO2 on 4H‐SiC

Advanced Materials Interfaces, EarlyView.
We investigate how oxygen plasma pre‐treatment affects the thermal oxidation of silicon carbide. While plasma modification increases growth rates by 84%, it reduces dielectric breakdown strength by 18%. Our findings reveal that although plasma improves the interface state density, it introduces structural damage, highlighting a critical trade‐off ...
Chezhiyan Nanjappan, Michael Stöger‐Pollach, Georg Pfusterschmied, Ulrich Schmid   +3 more
wiley   +1 more source

Plasma‐Sequence‐Engineered Atomic Layer Deposition of Ultra‐Thin SiNx for Enhanced Etching Resistance in Extreme Ultraviolet Pellicles

Advanced Materials Interfaces, EarlyView.
Plasma‐sequence‐engineered ALD (PSE‐ALD), based on sequential NH3 and N2 plasma pulses, enables ultrathin, dense SiNx films. ToF‐MS analysis confirms ligand removal via HCl evolution, while increased film density indicates network densification. The resulting SiNx coating provides robust protection of graphite under H2 plasma exposure.
Hye‐Young Kim, Sung Kyu Jang, Jihun Kim, Jong‐Hyun Choi, Ji‐Beom Yoo, Hyun‐Mi Kim, Seul‐Gi Kim, Hyeongkeun Kim   +7 more
wiley   +1 more source

Fast nonlinear scattering of runaway electron beams through resonant interactions with plasma waves

Nuclear Fusion
The resonant interaction between a runaway electron (RE) beam and a reactor-grade background plasma is investigated through two-dimensional particle-in-cell simulations, employing a simplified model of the system.
Hye Lin Kang, Young Dae Yoon, Myung-Hoon Cho, Gunsu S. Yun   +3 more
doaj   +1 more source

Direct Mode‐Resolved Measurement of Interfacial Phonon Transport by Acoustic Phonon Reflectometry

Advanced Materials Interfaces, EarlyView.
We introduce a novel analysis, acoustic phonon reflectometry, that measures the mode‐resolved phonon reflection coefficient at semiconductor interfaces. In aluminum nitride, we observe excellent agreement with the acoustic mismatch model across three distinct interfaces.
Christopher Hennighausen, Gustavo A. Alvarez, Jeffrey Z. Kaaret, Patrick Soucy, Amir F. Amhaz, Jeffrey Moses, Kenneth R. Beyerlein, Nicole A. Benedek, Zhiting Tian, Ankit S. Disa   +9 more
wiley   +1 more source

Runaway electron dynamics in ITER disruptions with shattered pellet injections

Nuclear Fusion
This study systematically explores the parameter space of disruption mitigation through shattered pellet injection in ITER with a focus on runaway electron (RE) dynamics, using the disruption modeling tool Dream .
O. Vallhagen, L. Hanebring, F.J. Artola, M. Lehnen, E. Nardon, T. Fülöp, M. Hoppe, S.L. Newton, I. Pusztai   +8 more
doaj   +1 more source

Atomic Layer Deposition of Metallic Molybdenum Dioxide Thin Films Enabling High‐k Rutile Capacitors

Advanced Materials Interfaces, EarlyView.
The first direct atomic layer deposition (ALD) process of molybdenum dioxide (MoO2) thin films is reported using molybdenum(II) acetate dimer (Mo2(OAc)4) and oxygen (O2) as precursors at 235°C–275°C. The films are crystalline, exceptionally pure, and conductive.
Alexey Ganzhinov, Miika Mattinen, Marko Vehkamäki, Kenichiro Mizohata, Mykhailo Chundak, Georgi Popov, Paavo Porri, Mikko Ritala, Matti Putkonen   +8 more
wiley   +1 more source

Validation of runaway electron mitigation coil electromagnetic modeling in the HBT-EP tokamak

Nuclear Fusion
The electromagnetic design and modeling process for the HBT-EP Runaway Electron Mitigation Coil (REMC) is validated through comparison with experimental results, confirming the accuracy of predictions for disruption-driven REMC currents. ThinCurr, a thin-
Anson E. Braun, Christopher J. Hansen, Jeffrey P. Levesque, Nigel J. DaSilva, Matthew N. Notis, Carlos A. Paz-Soldan, Michael E. Mauel, Gerald A. Navratil   +7 more
doaj   +1 more source

Microfluidic Engineering of Chitosan‐Coated Nanoemulsions for Controlled Release and Stability in Space Pharmaceutics

Advanced Materials Technologies, EarlyView.
Microfluidic engineering enables the fabrication of chitosan‐coated, melatonin‐loaded nanoemulsions with controlled release and enhanced physicochemical stability for space pharmaceutics. Interfacial biopolymer coating modulates droplet behavior under accelerated thermal stress and simulated microgravity.
Modupe Adebowale, Nguyen Van Duc Long, Philip M Williams, Volker Hessel   +3 more
wiley   +1 more source

Reduction of the Downward Energy Flux of Nonthermal Electrons in the Solar Flare Corona due to Cospatial Return-current Losses

The Astrophysical Journal
High-energy electrons carry much of a solar flare’s energy. Therefore, understanding changes in electron beam distributions during their propagation is crucial. A key focus of this paper is how the cospatial return current reduces the energy flux carried
Meriem Alaoui, Gordon D. Holman, M. Swisdak   +2 more
doaj   +1 more source

Degradation Mechanisms in PEM Water Electrolysis: Diagnosis and Impact

Advanced Materials Technologies, EarlyView.
This review provides an analysis of degradation mechanisms in proton electrolyte membrane water electrolyzers (PEMWE), focusing on all key components. It discusses diagnostic and measurement techniques for evaluating degradation, less‐studied mechanisms, and an expert survey.
Annik Bernhardt, Katja Lange, Robert Göckeritz, Erik Grunwald, Angelika Hähnel, Alexander Müller, Volker Naumann, Sistan Rasuli, Wolfram Münchgesang, Bruno G. Pollet, Kerstin Witte‐Bodnar, Klemens Ilse   +11 more
wiley   +1 more source