Results 91 to 100 of about 3,273,570 (352)

Magnetic island formation in tokamaks [PDF]

, 1989
The size of a magnetic island created by a perturbing helical field in a tokamak is estimated. A helical equilibrium of a current- carrying plasma is found in a helical coordinate and the helically flowing current in the cylinder that borders the plasma is calculated.
openaire   +2 more sources

Stable skyrmion bundles at room temperature and zero magnetic field in a chiral magnet

Nature Communications
Topological spin textures are characterized by magnetic topological charges, Q, which govern their electromagnetic properties. Recent studies have achieved skyrmion bundles with arbitrary integer values of Q, opening possibilities for exploring ...
Yongsen Zhang, Jin Tang, Yaodong Wu, Meng Shi, Xitong Xu, Shouguo Wang, Mingliang Tian, Haifeng Du   +7 more
doaj   +1 more source

Reduction of ion thermal diffusivity inside a magnetic island in JT-60U tokamak plasma.

Physical Review Letters, 2012
A peaked ion temperature profile is observed inside the magnetic island during mode locking after the back transition from H mode to L mode in JT-60U. The thermal diffusivity evaluated inside the magnetic island is 0.1 m(2)/s, which is much smaller than ...
K. Ida, K. Kamiya, A. Isayama, Y. Sakamoto   +3 more
semanticscholar   +1 more source

Recent Progress on Flexible Multimodal Sensors: Decoupling Strategies, Fabrication and Applications

Advanced Materials, EarlyView.
In this review, we establish a tripartite decoupling framework for flexible multimodal sensors, which elucidates the underlying principles of signal crosstalk and their solutions through material design, structural engineering, and AI algorithms. We also demonstrate its potential applications across environmental monitoring, health monitoring, human ...
Tao Wu, Yu‐Tao Li, Luyu Zhao, Yi Zhang, Zhaojie Zhang, Jian Yuan, Yiwen Wu, Anqi Che, Yuanxiao Ma, Yang Chai, Yeliang Wang   +10 more
wiley   +1 more source

Gyrokinetic simulations of the effects of magnetic islands on microturbulence in KSTAR

Nuclear Fusion
Gyrokinetic simulations are utilized to study effects of magnetic islands (MIs) on the ion temperature gradient (ITG) turbulence in the KSTAR tokamak with resonant magnetic perturbations. Simulations show that the transport is controlled by the nonlinear
Xishuo Wei, Javier H Nicolau, Gyungjin Choi, Zhihong Lin, Seong-Moo Yang, SangKyeun Kim, WooChang Lee, Chen Zhao, Tyler Cote, JongKyu Park, Dmitri Orlov   +10 more
doaj   +1 more source

Self‐Assembled Cobalt Oxide Nanobeads on the Conducting Van der Waals Semi‐Metal PtTe2 for Catalytic Heterostructure

Advanced Materials Interfaces, EarlyView.
Self‐assembled CoO nanobeads on the Van der Waals surface of PtTe2 were synthesized through simple thermal annealing utilizing the residual oxygen in the annealing chamber. In this study, the electrocatalytic effect for oxygen evolution reaction from CoO nanobeads on conducting PtTe2 was confirmed, elucidating the new pathway to design a ...
Minhyuk Choi, Hyeryeon Lee, Ki Chang Kwon, Seungwook Choi, Gyeongbo Kim, Nurul Hasanah, Ansoon Kim, Mun Seok Jeong, Eun Kyu Kim, Seungwoo Song   +9 more
wiley   +1 more source

Error field predictability and consequences for ITER

Nuclear Fusion
ITER coil tolerances are re-evaluated using the modern understanding of coupling to least-stable plasma modes and an updated center-line-traced model of ITER’s coil windings. This reassessment finds the tolerances to be conservative through a statistical,
M. Pharr, N.C. Logan, C. Paz-Soldan, J.K. Park, C. Hansen   +4 more
doaj   +1 more source

Nonlinear study of tearing modes and plasma flows around magnetic islands in tokamak plasmas

AIP Advances, 2020
The behavior of non-linear tearing modes and the plasma flows around magnetic islands is studied numerically in a cylindrical geometry using the method of reduced magneto-hydro-dynamic simulation.
Jizong Yang, Jingchun Li, Jiaqi Dong, Songfen Liu, Peng Shi, Yizhen Zhao, Shaoyong Chen   +6 more
doaj   +1 more source

Strategies for Enhancing Thermal Conductivity of PDMS in Electronic Applications

Advanced Materials Technologies, EarlyView.
This review explores effective strategies for enhancing heat dissipation in Polydimethylsiloxane (PDMS)‐based composites, focusing on particle optimization, 3D network design, and multifunctional integration. It offers key insights into cutting‐edge methods and simulations that are advancing thermal management in modern electronic devices.
Xiang Yan, Marisol Martin‐Gonzalez
wiley   +1 more source

Turbulence spreading induced vortex flow generation in a magnetic island

Nuclear Fusion
We derive a self-consistent relation between turbulence spreading flux and vortex flow acceleration for time-stationary turbulence inside a magnetic island (MI) by extending the Charney-Drazin momentum theorem.
E.S. Yoon, T.S. Hahm, G.J. Choi, Y.W. Cho, A. Ishizawa, M.J. Choi, J.M. Kwon   +6 more
doaj   +1 more source