Results 51 to 60 of about 21,815 (267)

Color Routing and Beam Steering of Single‐Molecule Emission with a Spherical Silicon Nanoantenna

open access: yesAdvanced Functional Materials, EarlyView.
We experimentally demonstrate broadband directional emission from single molecules using a single spherical silicon nanoparticle assembled via DNA origami. By varying nanoparticle (NP) size and emitter position, we achieve unidirectional emission, beam steering, and color routing at the nanoscale, revealing modal interference as the underlying ...
María Sanz‐Paz   +9 more
wiley   +1 more source

A new hybrid implicit-explicit FDTD method for local subgridding in multiscale 2-D TE scattering problems [PDF]

open access: yes, 2016
The conventional finite-difference time-domain (FDTD) method with staggered Yee scheme does not easily allow including thin material layers, especially so if these layers are highly conductive.
De Zutter, Daniël   +2 more
core   +2 more sources

Elucidating the Role of Surface Ligands on the Oxidative Etching of Au Bipyramids During Photothermia Using Liquid Cell Transmission Electron Microscopy

open access: yesAdvanced Functional Materials, EarlyView.
Gold bipyramids can act as efficient plasmonic nanoheaters, but they often reshape during laser heating. This study shows that oxygen nanobubbles drive oxidative etching and that surface ligands control stability. CTAB‐ and citrate‐coated particles blunt and lose optical performance, whereas polystyrene sulfonate preserves shape and heating by ...
Irene López‐Sicilia   +7 more
wiley   +1 more source

Analysis of GPR Wave Propagation in Complex Underground Structures Using CUDA-Implemented Conformal FDTD Method

open access: yesInternational Journal of Antennas and Propagation, 2019
Ground penetrating radar (GPR), as a kind of fast, effective, and nondestructive tool, has been widely applied to nondestructive testing of road quality. The finite-difference time-domain method (FDTD) is the common numerical method studying the GPR wave
Jianwei Lei   +6 more
doaj   +1 more source

A SCATTERING SIMULATION MODEL FOR NONSPHERICAL AEROSOL PARTICLES BASED ON PARALLEL FDTD SCHEME [PDF]

open access: yesThe International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2019
In order to simulate the scattering properties of nonspherical aerosol particles in visible and near infrared band precisely and efficiently, a scattering computation model for aerosol particles based on parallel FDTD (Finite Difference Time Domain) is ...
S. Hu   +5 more
doaj   +1 more source

A partial discharge detection method for high-voltage cables based on FDTD modeling

open access: yesZhejiang dianli, 2023
The partial discharge (PD) of high-voltage cables and the accessories directly affects the insulation performance of power cables. Therefore, a PD detection method for high-voltage cables based on finite-difference time-domain (FDTD) modeling is proposed.
PAN Biao   +5 more
doaj   +1 more source

Method for predicting whispering gallery mode spectra of spherical microresonators

open access: yes, 2015
A full three-dimensional Finite-Difference Time-Domain (FDTD)-based toolkit is developed to simulate the whispering gallery modes of a microsphere in the vicinity of a dipole source.
Francois, Alexandre   +6 more
core   +1 more source

Bioorthogonal Photoactivation of 2‐Nitrobenzyl Caged Doxorubicin Anticancer Prodrugs on Gold Nanostars

open access: yesAdvanced Materials, EarlyView.
Bioorthogonal chemistry was applied to intracellularly photoactivate Doxorubicin (Dox) using gold nanostars (AuNSt) and near‐infrared (NIR) light. Two prodrugs were used: one photoactivatable, masked with 2‐nitrobenzyl carbamate (proDox1) and another photolabile, masked with 2‐nitrobenzyl diol (proDox2), which was attached to the AuNSt surface.
Juan José Esteve‐Moreno   +15 more
wiley   +1 more source

Adaptive Wavelet Collocation Method for Simulation of Time Dependent Maxwell's Equations [PDF]

open access: yes, 2012
This paper investigates an adaptive wavelet collocation time domain method for the numerical solution of Maxwell's equations. In this method a computational grid is dynamically adapted at each time step by using the wavelet decomposition of the field at ...
Freude, Wolfgang   +3 more
core   +3 more sources

Opportunities of Semiconducting Oxide Nanostructures as Advanced Luminescent Materials in Photonics

open access: yesAdvanced Materials, EarlyView.
The review discusses the challenges of wide and ultrawide bandgap semiconducting oxides as a suitable material platform for photonics. They offer great versatility in terms of tuning microstructure, native defects, doping, anisotropy, and micro‐ and nano‐structuring. The review focuses on their light emission, light‐confinement in optical cavities, and
Ana Cremades   +7 more
wiley   +1 more source

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