Results 71 to 80 of about 474,973 (216)

Plasmonic toroidal metamaterials at optical frequencies

, 2012
Toroidal dipole is created by currents flowing on a surface of a doughnut-shaped structure along its meridians first considered by Zel'dovich in 1957 [1]. Toroidal metamaterials were first theoretically proposed in 2007 [2].
Ho, You Zhe, Chau, Yuan-Fong, Chen, Wei Ting, Wu, Pin Chieh, Huang, Yao-Wei, Tsai, Din Ping, Zheludev, Nikolay I.   +6 more
core   +1 more source

A Time‐Continuous Model of the 3D Ionospheric Current System and Associated Magnetic Fields in the Diurnal Variation Band

Journal of Geophysical Research: Space Physics, Volume 131, Issue 10, October 2026.
Abstract Ionospheric currents and their associated magnetic perturbations are difficult to predict due to the high variability of their driving mechanisms. In addition, the 3D structure of the currents is challenging to unravel due to the lack of direct observations within the current flow region, particularly in the E $E$‐layer.
P. Alken, G. D. Egbert, A. Maute, A. D. Richmond, G. Lu, K. Pham, M. Fillion   +6 more
wiley   +1 more source

Effects of neutral beam injection on tearing mode stability: insights from hybrid simulations

Nuclear Fusion
In tokamak plasmas, tangential neutral beam injection (NBI) produces (a large fraction of) circulating energetic ions (CEIs) and induces plasma toroidal rotation, both of which play an important role in the stability of tearing mode (TM).
Sizhe Duan, Xiang Zhu, Huishan Cai
doaj   +1 more source

Episodic Change, Quiescence, and Recovery of Earth's Inner Core Surface

Journal of Geophysical Research: Solid Earth, Volume 131, Issue 10, October 2026.
Abstract While a consensus has emerged that the hypothesis of inner core differential rotation cannot provide a consistent explanation for the seismic data, it remains debated whether the seismic data indicate a concurrence of a temporal change of inner core surface with an inner core differential rotation or the temporal change of inner core surface ...
Xin Zhang, Lianxing Wen
wiley   +1 more source

Large Rabi Splitting Driven by Plasmon‐Enhanced Hybrid Anapole States in Si–Au–WSe2 Heterostructures

Nanophotonics, Volume 15, Issue 18, 25 September 2026.
A silicon hybrid‐anapole microcavity coupled with a plasmonic array enables tripartite strong coupling with WSe2 excitons. Spatially extended field enhancement and coherent cavity–plasmon hybridization strengthen light–matter interactions, producing a giant 330 meV Rabi splitting at room temperature and offering a compact platform for low‐exciton ...
Yanhui Deng, Mingyang Yu, Xizhen Xing, Chenxi Zhao, Tianyu Yang, Yujie Ma, Zhang‐Kai Zhou   +6 more
wiley   +1 more source

Predicting the Toroidal Rotation Profile for ITER

, 2021
Experiments on DIII-D have increased confidence in a prediction of moderate intrinsic rotation in ITER[1] by investigating the effect of fast-ions and edge neutrals in rotation studies. In a large tokamak like ITER, intrinsic sources of rotation are important because evidence suggests they will be comparable to the neutral beam torque.
Salmi Antti, Tala Tuomas
openaire   +3 more sources

Effect of toroidal rotation on impurity transport in tokamak improved confinement

Nuclear Fusion
The centrifugal force effects from toroidal rotation in improved confinement plasmas are analyzed on high- Z impurities in tokamaks. Tungsten (W) transport simulations are performed using the impurity transport code developed in the integrated code TASK.
Shota Mochinaga, Naohiro Kasuya, Atsushi Fukuyama, Masatoshi Yagi   +3 more
doaj   +1 more source

Velocity profile shapes in Alcator C-Mod plasmas

Nuclear Fusion
Toroidal rotation velocity spatial profiles ( $r/a$ $ \lt $ 0.8) have been obtained from C-Mod over a wide range of operational conditions, including H-mode, I-mode, ICRF-heated L-mode and Ohmic L-mode (LOC and SOC), and in plasmas with ITBs, LH wave ...
J.E. Rice, N.M. Cao, A.E. Hubbard, J.W. Hughes   +3 more
doaj   +1 more source

Constraints and observational manifestations of failed solar eruptions in a toroidal magnetic cage

Astronomy & Astrophysics
Context. Observations show that many solar eruptions remain confined in the magnetic configuration of strong overlying magnetic fields, which is commonly referred to as the magnetic cage. Aims.
Guo J. H., Guo Y., Wu H., Schmieder B., Démoulin P., Ni Y. W., Wang C., Poedts S., Li T., Wang W. S., Zhou Y. H., Chen P. F.   +11 more
doaj   +1 more source

Field theory in normal toroidal coordinates

MATEC Web of Conferences, 2018
Field theory is widely represented in spherical and cylindrical coordinate systems, since the mathematical apparatus of these coordinate systems has been thoroughly studied.
Nesnov Dmitry V.
doaj   +1 more source