Results 21 to 30 of about 48,614 (262)

Wide edge state supercontinuum in a Floquet–Lieb topological photonic insulator

APL Photonics, 2023
Conventional topological photonic insulators typically have narrow nontrivial band gaps truncated by broad dispersive bulk bands, resulting in limited edge mode transmission bandwidths that can be exploited for potential applications.
Hanfa Song, Tyler J. Zimmerling, Bo Leng, Vien Van   +3 more
doaj   +1 more source

The H-mode Pedestal and Edge Localized Modes in NSTX [PDF]

, 2004
The research program of the National Spherical Torus Experiment (NSTX) routinely utilizes the H-mode confinement regime to test and extend beta and pulse length limits. As in conventional aspect ratio tokamaks, NSTX observes a variety of edge localized modes (ELMs) in H-mode. Hence a significant part of the research program is dedicated to ELMs studies.
null R. Maingi, null E.D. Fredrickson, null J.E. Menard, null N. Nishino, null A.L. Roquemore, null S.A. Sabbagh, null K. Tritz, null the NSTX Team   +7 more
openaire   +2 more sources

Edge Localized Modes as New Bifurcation in Tokamaks

Physical Review Letters, 1996
A model of giant edge localized modes in tokamaks is developed. The theory of self-sustained turbulence of a current-diffusive ballooning mode is extended. A bifurcation from the H mode to a third state with magnetic braiding, the M mode, is found to occur if the pressure gradient reaches a critical value.
, Itoh, , Itoh, , Fukuyama, , Yagi
openaire   +2 more sources

Edge Modes and Nonlocal Conductance in Graphene Superlattices [PDF]

Physical Review Letters, 2018
We study the existence of edge modes in gapped Moiré superlattices in graphene monolayer ribbons. We find that the superlattice bands acquire finite Chern numbers, which lead to a Valley Hall Effect. The presence of dispersive edge modes is confirmed by calculations of the band structure of realistic nanoribbons using tight binding methods.
Brown, Rory, Walet, Niels; id_orcid 0000-0002-2061-5534, Guinea, Francisco   +2 more
openaire   +6 more sources

Visualization of core and edge MHD instabilities in 2D using ECEI

EPJ Web of Conferences, 2012
MHD instabilities in the core and edge of the KSTAR plasmas have been visualized in 2D using an electron cyclotron emission imaging (ECEI) system with sufficient time and space resolutions for the study of the underlying dynamics.
Donné A. J. H., Luhmann N.C., Domier C.W., Park H.K., Choe G.H., Lee J., Choi M.J., Lee W., Yun G.S., Lee J.H., Park S.I., Joung M., Bae Y.S., Jeon Y.M., Yoon S.W.   +14 more
doaj   +1 more source

Localization of edge state in acoustic topological insulators by curvature of space

New Journal of Physics, 2023
Topological insulators (TIs) with robust boundary states against perturbations and disorders have boosted intense research in classical systems. In general, two-dimensional (2D) TIs are designed on a flat surface with special boundary to manipulate the ...
Jia-Qi Quan, Hong-Wei Wu, Yun-Kai Liu, Peng-Xiang Xie, Zong-Qiang Sheng   +4 more
doaj   +1 more source

MHD simulations of formation, sustainment and loss of quiescent H-mode in the all-tungsten ASDEX Upgrade

Nuclear Fusion, 2023
Periodic edge localized modes (ELMs) are the non-linear consequences of pressure-gradient-driven ballooning modes and current-driven peeling modes becoming unstable in the pedestal region of high confinement fusion plasmas.
Lorenz Meier, Matthias Hoelzl, Andres Cathey, Guido Huijsmans, Eleonora Viezzer, Mike Dunne, Jan van Dijk, Diego José Cruz Zabala, Karl Lackner, Sibylle Günter, the ASDEX Upgrade Team, the EUROfusion MST1 Team, the JOREK Team   +12 more
doaj   +1 more source

Edge-localized-modes in tokamaks

Physics of Plasmas, 2014
Edge-localized-modes (ELMs) are a ubiquitous feature of H-mode in tokamaks. When gradients in the H-mode transport barrier grow to exceed the MHD stability limit the ELM instability grows explosively, rapidly transporting energy and particles onto open field lines and material surfaces.
openaire   +2 more sources

Effects of different interlaminar hybridization and localized edge loads on the vibration and buckling behavior of fiber metal composite laminates

Composites Part C: Open Access, 2021
This investigation presents the effect of different interlaminar hybridization and localized in-plane edge loads on the vibration and buckling characteristics of hybrid fiber metal laminates (HFMLs) by developing finite element formulation.
P.P. Yathish Muddappa, T. Rajanna, G. Giridhara   +2 more
doaj   +1 more source

Plasma performance and operational space with an RMP-ELM suppressed edge

Nuclear Fusion
The operational space and global performance of plasmas with edge-localized modes (ELMs) suppressed by resonant magnetic perturbations (RMPs) are surveyed by comparing AUG, DIII-D, EAST, and KSTAR stationary operating points.
C. Paz-Soldan, S. Gu, N. Leuthold, P. Lunia, P. Xie, M.W. Kim, S.K. Kim, N.C. Logan, J.-K. Park, W. Suttrop, Y. Sun, D.B. Weisberg, M. Willensdorfer, the ASDEX Upgrade Team, the DIII-D Team, the EAST Team, the KSTAR Team   +16 more
doaj   +1 more source