Results 91 to 100 of about 17,219 (259)

Edge and core impurity behavior and transport in EAST H-mode plasma with internal transport barrier

Nuclear Fusion
After installation of tungsten divertor in EAST, impurity accumulation of tungsten ions has been frequently observed in H-mode discharge with internal transport barrier (ITB) due to an enhancement of the impurity confinement inside the ITB.
Wenmin Zhang, Ling Zhang, Yuqi Chu, Shigeru Morita, Xiang Gao, Gongshun Li, Shouxin Wang, Yunxin Cheng, Yingying Li, Ailan Hu, Chengxi Zhou, Darío Mitnik, Zhen Zhou, Hailin Zhao, Qing Zang, Ning Yan, Jihui Chen, Yinxian Jie, Jinping Qian, Haiqing Liu, Guosheng Xu, Jiansheng Hu, Yuntao Song   +22 more
doaj   +1 more source

Impurity transport studies on MAST [PDF]

, 2014
Impurity transport is a subject of fundamental importance in plasma physics in general and in tokamak physics in particular. The behaviour of the various impurity species and the evolution of their concentration determines, among other things, the fuel dilution and the fusion reaction rate, the plasma radia tion pattern and the local energy balance ...
Henderson, Stuart Scott, Summers, Hugh
openaire   +1 more source

Mineral Deposition From Liquid Precursors Triggered by Complementary Polyelectrolytes

Advanced Functional Materials, EarlyView.
Polyelectrolyte additives can delay or prevent crystal nucleation in supersaturated solutions of insoluble mineral salts such as calcium carbonate. This work reports that adding a second, oppositely‐charged polyelectrolyte leads to immediate mineral crystallization from such metastable solutions.
Mohammed Kayes Patoary, Eli Halperin Pierce, Elizabeth Siu, Brigitte Gallagher, Md Abul Shahid, Yang Zhang, Thomas B. H. Schroeder   +6 more
wiley   +1 more source

Atomically Dispersed Ni Site Catalysts Accelerating Sluggish Sulfur Redox Kinetics in Nonaqueous Zn‐S Batteries

Advanced Functional Materials, EarlyView.
An atomically dispersed Ni catalyst featuring Ni‐N4 coordination is developed as a sulfur host for nonaqueous Zn─S batteries. This configuration modulates the electronic structure to lower activation barriers during rate‐limiting steps and promotes a robust ZnF2‐rich cathode‐electrolyte interphase, thereby accelerating sulfur redox kinetics ...
Junhyuk Ji, Dongwoo Kim, Nuri Moon, Daehwan Kim, Keon Kim, Nahyung Kim, Young Yong Kim, Won Bae Kim   +7 more
wiley   +1 more source

Understanding carbon sourcing and transport originating from the helicon antenna surfaces during high-power helicon discharge in DIII-D Tokamak

Nuclear Fusion
The high-power helicon wave system in the DIII-D tokamak could potentially introduce new plasma-material interaction (PMI) challenges owing to rectified radio-frequency (RF) sheath potentials that develop near the antenna and surrounding plasma-facing ...
A. Kumar, D. Nath, W. Tierens, J.D. Lore, R. Wilcox, G. Ronchi, M. Shafer, A.Y. Joshi, O. Sahni, M.S. Shephard, B. Van Compernolle, R.I. Pinsker, A. Demby, O. Schmitz   +13 more
doaj   +1 more source

Charge‐Tunable Coacervate Micelles for Separator Engineering in Lithium‐Sulfur Batteries

Advanced Functional Materials, EarlyView.
A separator engineering strategy based on charge‐tunable complex coacervate core micelles (C3Ms) is presented to form an ion‐selective layer regulating polysulfide transport in Li–S batteries. The micelles enable uniform adsorption onto commercial polypropylene separators and infiltration throughout the internal pore network, suppressing polysulfide ...
Yongsheng Zhang, J. R. Andrade Aguirre, Julien Es Sayed, Chongyang Jiang, Yuxuan Zhang, Xiaolong He, Yinyu Xiang, Yutao Pei, Xiangping Zhang, Petra Ruldolf, Marleen Kamperman, Giuseppe Portale   +11 more
wiley   +1 more source

Turbulent drifts of impurity ions as an explanation for anomalous radial transport in the far-SOL of DIII-D

Nuclear Fusion
Successful fusion reactor operation relies on minimal core contamination by impurities, otherwise too much power may be radiated and harm performance. This requires reliable predictions of impurity transport from the scrape-off layer (SOL) into the core,
S.A. Zamperini, T.N. Bernard, D.L Rudakov, J.A Boedo   +3 more
doaj   +1 more source

An Electrowetting Pump

Advanced Functional Materials, EarlyView.
A tubular electrowetting pump moves alternating droplets through a millimeter‐wide channel in discrete, reversible steps, functioning as a fluidic stepper motor. With no moving parts and electrodes insulated from the liquid, it delivers silent, accurate flow. Flexibility allows the pump to be woven directly into textiles for wearable, medical, and soft‐
Robert Hennig, Herbert Shea
wiley   +1 more source

Modeling Impurity Effects in Graphene Quantum Dots: A Python Framework for Impurity-Induced Valley Splitting and Quantum Transport

Advances in Condensed Matter Physics
We present a Python based open-source framework to model impurity effects in graphene quantum dots (GQDs). The framework integrates tight-binding and continuum Dirac models to simulate Coulombic and magnetic impurity potentials, enabling detailed ...
Yohannes Achenefe Nigusie
doaj   +1 more source

Impurities in Holography and Transport Coefficients

, 2012
We present a way to include impurities in AdS/CFT correspondence, in view of its application to condensed matter physics. Examples of these are the current impurity and spin impurity. We calculate electric conductivity and spin susceptibility of holographic superconductors, with doping of density/spin impurities.
Hashimoto, Koji, Iizuka, Norihiro
openaire   +2 more sources