Results 121 to 130 of about 8,562 (255)

Chiral Light–Matter Interaction for Controlling Nanoplasmonic Fields

open access: yesNanophotonics, Volume 15, Issue 11, 13 June 2026.
This paper demonstrates plasmonic circular dichroism using gold nanoparticle dimers that exhibit high near‐field contrast under left‐ and right‐circularly polarized illumination. SNOM mapping reveals that the dichroic behavior of the dimers transforms hot spots into cold spots with full optical control. Additionally, the eigenmode excitations and their
Lázár Tóth   +5 more
wiley   +1 more source

Accuracy-efficiency comparison of finite-difference time-domain and adaptive integral method based simulators for bioelectromagnetics

open access: yes, 2013
textA detailed study of the performance of finite-difference time-domain (FDTD) and adaptive integral method (AIM) based simulators is presented for bioelectromagnetic (BIOEM) analysis in the UHF band.
Geyik, Cemil Serdar
core  

A Colloidal Quantum Dot Thermistor and Bolometer

open access: yesAdvanced Materials, Volume 38, Issue 32, 8 June 2026.
This work introduces colloidal quantum dot thermistors employing a potential barrier structure to tune the activation energy of transport and hence the temperature coefficient of resistance (TCR). Upon integration with plasmonic absorbers, the CQD‐based bolometer device enables room‐temperature wavelength‐selective photodetection across the mid‐ to ...
Gaurav Kumar   +7 more
wiley   +1 more source

Two-Dimensional FDTD and TLM

open access: yes, 1994
Applying the method of moments to Maxwell's equations, Yee's two-dimensional FDTD scheme with central difference approximations and the two-dimensional TLM method are dervied from first principles of field theory.
Krumpholz, Michael;Russer, Peter
core   +1 more source

Tailoring Electric and Magnetic Dipole Emission of Er3+ Ions via Toroidal Dipole Resonance of Si Nanodisk Hexagonal Array

open access: yesAdvanced Optical Materials, Volume 14, Issue 21, 5 June 2026.
Hexagonal arrays of silicon nanodisks are proposed to control 1.5 µm emission of Er3+ ions. Toroidal dipole resonance of the nanodisk array generates accessible magnetic hot spots at the surface, leading to enhanced and highly directional magnetic dipole emission along the surface‐normal direction via the magnetic Purcell effect.
Keisuke Moriasa   +3 more
wiley   +1 more source

Minimizing Dispersion in FDTD Methods with CFL Limit Extension

open access: yes, 2017
The CFL extension in FDTD methods is receiving considerable attention in order to reduce the computational effort and save the simulation time. One of the major issues in the CFL extension methods is the increased dispersion. We formulate a decomposition
Sun, Chen
core  

k‐Selective Electrical‐to‐Magnon Transduction with Finite‐Element‐Resolved Sub‐Micron Nanoantennas

open access: yesAdvanced Physics Research, Volume 5, Issue 6, June 2026.
We introduce a coupled finite‐element‐finite‐difference framework that links impedance‐matched nanoantenna geometries to propagating spin‐wave dynamics, capturing skin effects, proximity effects, and taper leakage beyond uniform‐current models. Applied to coplanar‐waveguide and stripline nanoantennas on yttrium‐iron‐garnet, the simulations achieve ...
Andreas Höfinger   +11 more
wiley   +1 more source

Hybridization of FDTD and Device Behavioral-Modeling Techniques [PDF]

open access: yes, 2003
Stievano, Igor Simone   +3 more
core   +1 more source

Implementation of Microwave Active/Passive Elements Using the FDTD Methods

open access: yes, 2003
The FDTD method is a numerical method that uses the second-order central-difference method to discrete the Maxwell\ue2s equations in differential form, and positioning electromagnetic field in space grids and time grids.
Wu, Bo-Zhang
core  

Stability analyses of nonuniform time-step LOD-FDTD methods for electromagnetic and thermal simulations

open access: yes, 2017
This paper presents the stability analyses of nonuniform time-step (NUTS) locally one-dimensional finite-difference time-domain (LOD-FDTD) methods for electromagnetic (EM) and thermal simulations.
Tan, Eng Leong   +3 more
core   +1 more source

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