Results 61 to 70 of about 2,688 (224)

An optimized perfectly matched layer for the Schrödinger equation

open access: yes, 2009
A perfectly matched layer (PML) for the Schrödinger equation using a modal ansatz is presented. We derive approximate error formulas for the modeling error from the outer boundary of the PML and for the error from the discretization and show how these ...
Kreiss, Gunilla, Nissen, Anna
core   +1 more source

Numerical Study of Solid Core Photonic Crystal Fibres with Endlessly Single Mode

open access: yesIbn Al-Haitham Journal for Pure and Applied Sciences, 2018
       In this work, a solid core photonic crystal fibre (SC-PCF) has been designed with endlessly single mode of which both centerd core and holes in the cladding are organized by circles.
Nadia Fateh Muhammed   +2 more
doaj   +1 more source

Hot Electron‐Informed Quantum Plasmonics in Nanoparticle‐on‐Mirror Nanocavities

open access: yesNanophotonics, Volume 15, Issue 12, 25 June 2026.
A computational model for ultrafast optical modulation of quantum phenomena at plasmonic metal interfaces is developed. Focusing on nanoparticle‐on‐mirror nanocavities, it describes temperature‐induced variations in electronic quantum behavior. This facilitates analysis of quantum plasmonics in non‐equilibrium systems, thereby expanding the realm of ...
Artur Avdizhiyan   +2 more
wiley   +1 more source

Adaptive-Coefficient Finite Difference Frequency Domain Method for Solving Time-Fractional Cattaneo Equation with Absorbing Boundary Condition

open access: yesFractal and Fractional
The time-fractional Cattaneo (TFC) equation is a practical tool for simulating anomalous dynamics in physical diffusive processes. The existing numerical solutions to the TFC equation generally deal with the Dirichlet boundary conditions.
Wenhao Xu   +3 more
doaj   +1 more source

Single‐Photon Emission From TMDCs through Strong Coupling to EQ Plasmon Modes of an Au Metasurface

open access: yesNanophotonics, Volume 15, Issue 11, 13 June 2026.
Compact, deterministic solid‐state single‐photon sources that operate at room temperature and integrate with planar nanophotonics are essential for the development of scalable quantum photonic technologies. This work presents a TMDC monolayer strongly coupled to a gold (Au) metasurface featuring an electric quadrupole mode, enabling high‐purity single ...
Andergachew Mekonnen Berhe   +2 more
wiley   +1 more source

Higher-Order Matrix Exponential Perfectly Matched Layer Scheme With Sub-Gridding Technique Based on the Factorization Approximate Crank–Nicolson Algorithm

open access: yesIEEE Open Journal of Antennas and Propagation
Although finite difference time-domain (FDTD) algorithms are potentially applicable to broadband wave propagation and radiation problems, various problems related to the absorbing boundary condition and complex structural meshing limit the accuracy of ...
Weikang Si   +5 more
doaj   +1 more source

Numerical Simulation of the Effect of Structure-Structure Interaction in the Frequency Response

open access: yesJournal of Algorithms & Computational Technology, 2013
Various vibration phenomena of buildings occurred in recent earthquakes. Some of them were very complicated and might be caused by unknown structure-structure interactions through foundations and/or ground soil. The aim of this research is to investigate
T. Kawamura, T. Kako
doaj   +1 more source

Modified Structure Of Photonic Crystal Fiber With Dispersion And Confinement Loss Properties For Wideband Applications

open access: yesJISR on Computing, 2019
In this article, an optimized structure of Photonic Crystal Fiber (PCF) has been planned that investigates the effect of dispersion and confinement loss of square shaped photonic crystal fiber, intended for wideband applications ranges from 1.35um to 1 ...
Kubra Bashir, Rabia Zaman, Seema Ansari
doaj   +1 more source

High‐Order Multipolar Excitations Governing Circular Dichroism in an All‐Dielectric Chiral Metasurface

open access: yesNanophotonics, Volume 15, Issue 11, 13 June 2026.
An all‐dielectric asymmetric gammadion metasurface exhibits visible circular dichroism governed by helicity‐selective multipolar excitations. Quadrupole‐dominated and weaker mixed‐mode resonances are identified, and their distinct near‐field optical chirality and angular responses are revealed, establishing a direct link between structural asymmetry ...
Chien‐Feng Chien   +4 more
wiley   +1 more source

On the computation of eigen modes for lossy microwave transmission lines including perfectly matched layer boundary conditions

open access: yes, 2001
The design of microwave circuits requires detailed knowledge on the electromagnetic properties of the transmission lines used. This can be obtained by applying Maxwell’s equations to a longitudinally homogeneous waveguide structure, which results in an ...
Heinrich, Wolfgang   +5 more
core   +1 more source

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