Results 21 to 30 of about 189,025 (287)

Experimental observation of edge states in SSH-Stub photonic lattices

open access: yesPhysical Review Research, 2022
We reveal unconventional edge states in a one-dimensional Stub lattice of coupled waveguides with staggered hoppings. The edge states appear for the same values of hoppings as topological edge states in the Su-Schrieffer-Heeger model. They have different
Gabriel Cáceres-Aravena   +5 more
doaj   +1 more source

Near-field scanning optical microscopy of photonic crystal nanocavities [PDF]

open access: yes, 2003
Near-field scanning optical microscopy was used to observe high-resolution images of confined modes and photonic bands of planar photonic crystal (PPC) nanocavities fabricated in active InGaAsP material. We have observed the smallest optical cavity modes,
Gogna, Pawan   +5 more
core   +2 more sources

Effect of electromechanical coupling on locally resonant quasiperiodic metamaterials

open access: yesAIP Advances, 2023
Electromechanical metamaterials have been the focus of many recent studies for use in simultaneous energy harvesting and vibration control. Metamaterials with quasiperiodic patterns possess many useful topological properties that make them a good ...
Joshua LeGrande   +2 more
doaj   +1 more source

Localized Conical Edge Modes of Higher Orders in Photonic Liquid Crystals

open access: yesCrystals, 2019
Most studies of the localized edge (EM) and defect (DM) modes in cholesteric liquid crystals (CLC) are related to the localized modes in a collinear geometry, i.e., for the case of light propagation along the spiral axis.
Vladimir A. Belyakov   +1 more
doaj   +1 more source

Spatial structure of unstable normal modes in a glass-forming liquid

open access: yesSciPost Physics, 2021
The phenomenology of glass-forming liquids is often described in terms of their underlying, high-dimensional potential energy surface. In particular, the statistics of stationary points sampled as a function of temperature provides useful insight into
Masanari Shimada, Daniele Coslovich, Hideyuki Mizuno, Atsushi Ikeda
doaj   +1 more source

Isochronism and tangent bifurcation of band edge modes in Hamiltonian lattices [PDF]

open access: yes, 2004
In {\em Physica D} {\bf 91}, 223 (1996), results were obtained regarding the tangent bifurcation of the band edge modes ($q=0,\pi$) of nonlinear Hamiltonian lattices made of $N$ coupled oscillators.
Aubry   +43 more
core   +1 more source

Dynamics of Quasiperiodic Beams

open access: yesCrystals, 2020
Quasiperiodic metastrucures are characterized by edge localized modes of topological nature, which can be of significant technological interest. We here investigate such topological modes for stiffened and sandwich beams, which can be employed as ...
Mohit Gupta, Massimo Ruzzene
doaj   +1 more source

Edge Localized Modes as New Bifurcation in Tokamaks

open access: yesPhysical 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

Surface breathers in discrete magnetic metamaterials [PDF]

open access: yes, 2015
We analyze the properties of discrete breathers excited near the edge of a one-dimensional metamaterial created by a truncated array of nonlinear split-ring resonators.
Kivshar, Yuri   +2 more
core   +1 more source

Helical mode localization and mode locking of ideal MHD instabilities in magnetically perturbed tokamak plasmas

open access: yesNuclear Fusion, 2023
In H-mode tokamak plasmas, the achievable pressure-gradient is limited by type-I Edge Localized Modes (ELMs), which are projected to cause severe damage to future fusion devices.
Jonas Puchmayr   +6 more
doaj   +1 more source

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