Results 81 to 90 of about 140,562 (225)

Rogue waves in the Davey-Stewartson equation [PDF]

open access: yes, 2012
General rogue waves in the Davey-Stewartson-I equation are derived by the bilinear method. It is shown that the simplest (fundamental) rogue waves are line rogue waves which arise from the constant background with a line profile and then disappear into the constant background again.
arxiv   +1 more source

Capturing Extraction: Geology, Photography, Industry and Institutional History in the Bingley Archive

open access: yesBulletin of Latin American Research, EarlyView.
Godfrey Bingley was a British industrialist who took up geology, photography and travel in the 1880s. His photographs are housed at the University of Leeds, where he worked with its Chair of Geology. This article analyses the archive's projection of the imperial geological imaginary that emanated from Britain and extended to the Americas.
Rebecca Jarman
wiley   +1 more source

Germanium microlasers on metallic pedestals

open access: yesAPL Photonics, 2018
Strain engineering is a powerful approach in micro- and optoelectronics to enhance carrier mobility, tune the bandgap of heterostructures, or break lattice symmetry for nonlinear optics.
A. Elbaz   +8 more
doaj   +1 more source

Simulation and Analysis of a Metamaterial Sensor Based on a Microring Resonator

open access: yesSensors, 2011
Metamaterials are artificial media structured on a size scale smaller than the wavelength of external stimuli, that may provide novel tools to significantly enhance the sensitivity and resolution of the sensors.
Yaozhong Lan   +4 more
doaj   +1 more source

All‐Dielectric Metawaveguide Ring Resonators with Deeply Sub‐Diffractive Mode Volumes

open access: yesLaser &Photonics Reviews, Volume 19, Issue 11, June 5, 2025.
This article presents the theory, simulation, and experimental realization of whispering gallery mode resonators capable of achieving deeply sub‐diffractive mode volumes, V << 2πR(λ0/2n)2, while preserving high Q factors. Rather than relying on plasmonics to reduce the mode volume, this work relies on nanostructured all‐dielectric metamaterial ...
Saddam Gafsi, Judson D. Ryckman
wiley   +1 more source

Existence and positivity properties of solitary waves for a multicomponent long wave-short wave interaction system [PDF]

open access: yesarXiv, 2015
We study the existence of solitary-wave solutions and some of their properties for a general multicomponent long-wave-short-wave interaction system. The system considered here describes the nonlinear interaction of multiple short waves with a long-wave, and is of interest in plasma physics, nonlinear optics, and fluid dynamics.
arxiv  

Physical and virtual spaces across a continuum of remoteness: Exploring spatial ruptures in remote court hearings

open access: yesTransactions of the Institute of British Geographers, Volume 50, Issue 2, June 2025.
Short Abstract This paper uses geographical theorisations of space to make sense of digital developments in court space. It proposes that the introduction of remote platforms generates three spatial ruptures in court hearings: the space of remote hearings is dispersed across multiple sites, stretched into non‐traditional justice spaces, and sometimes ...
Jo Hynes
wiley   +1 more source

Multiwavelength magnetic coding of helical luminescence in ferromagnetic 2D layered CrI3

open access: yesiScience, 2022
Summary: Two-dimensional (2D) van der Waals (vdW) ferromagnets have opened new avenues for manipulating spin at the limits of single or few atomic layers, and for creating unique magneto-exciton devices through the coupling of ferromagnetic (FM) orders ...
Bo Peng   +5 more
doaj  

Optical Microfiber Biomedical Sensors: Classification, Applications, and Future Perspectives

open access: yesAdvanced Sensor Research, Volume 4, Issue 5, May 2025.
This review delves deeply into the various types of optical microfiber biosensors, grounded firmly in their fundamental principles, and underscores their indispensable roles in pushing forward biomedical advancements. It examines the latest advancements, challenges faced by these biosensors in practical applications, future directions, breakthroughs ...
Lili Liang   +5 more
wiley   +1 more source

Silicon‐Integrated Perovskite Photonic Laser Based on Bound States in Continuum

open access: yesLaser &Photonics Reviews, Volume 19, Issue 9, May 6, 2025.
A strategy to integrate perovskite coherent light sources onto commercial silicon platform is proposed. Based on the bound states in the continuum, the energy leakage from perovskite microdisk to silicon is totally removed, leading to the observation of perovskite lasers on silicon with a laser quality factor ∼4850.
Zhiyuan Gu   +9 more
wiley   +1 more source

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