Results 71 to 80 of about 2,196 (202)
Компьютерная оптикаIn this work, the propagation of optical vortices with circular, radial, and azimuthal polarization through subwavelength ring gratings with standard and GRIN substrates using a finite difference time domain method is numerically simulated.
D.A. Savelyev
doaj +1 more source
Direct-Splitting-Based CN-FDTD for Modeling 2D Material Nanostructure Problems
IEEE Open Journal of Antennas and Propagation, 2020 Incorporating a truncation of the complex-frequency-shifted perfectly matched layer (CFS-PML), the direct-splitting- based Crank-Nicolson finite-difference time-domain (CNDS-FDTD) is developed and applied to the infrared two-dimensional layered material (
Naixing Feng +5 more
doaj +1 more source
Advanced Materials Interfaces, EarlyView.This study investigates the plasmonic properties and biosensing capabilities of a nanocomposite incorporating Cu and Ag nanoparticles for detecting anti‐DbpA antibodies associated with Lyme disease. The enhanced LSPR response is explained through FDTD simulations of Cu–Ag near‐field interactions and increased surface roughness.
Sanjay Kumar +10 more
wiley +1 more source
Efficient Computation of High-Order Electromagnetic Field Derivatives for Multiple Design Parameters in FDTD [PDF]
, 2019 This paper introduces a new computational framework to derive electromagnetic field derivatives with respect to multiple design parameters up to any order with the Finite-Difference Time-Domain (FDTD) technique. Specifically, only one FDTD simulation is needed to compute the first-order field derivatives with respect to N parameters, while two FDTD ...
arxiv +1 more source
A modified FDTD algorithm for processing ultra-wide-band response [PDF]
arXiv, 2023 Finite-difference time-domain (FDTD) is an effective algorithm for resolving Maxwell equations directly in time domain. Although FDTD has obtained sufficient development, there still exists some improvement space for it, such as ultra-wide-band response and frequency-dependent nonlinearity. In order to resolve these troubles, a modified version of FDTD
arxiv
Subcell Treatment of Sloped Interfaces between Debye Materials in the FDTD Method
Journal of Amasya University the Institute of Sciences and Technology, 2020 This paper presents the application of the subcell technique for the treatment of sloped interface in finite-difference time-domain method. The technique is based on the averaging of permittivities in each cell crossed by the material interface.
Kenan Tekbas
doaj
Advancement in Colloidal Metasurfaces: Approaches for Scalable Photonic Devices
Advanced Materials Interfaces, EarlyView.This perspective explores colloidal metasurfaces composed of plasmonic and emitting nanoparticles assembled by laser interference lithography and template‐assisted self‐assembly methods. Precise design strategies achieve directional emission, low‐threshold lasing, and tunable photonic bandgaps.
Sezer Seçkin +2 more
wiley +1 more source
Hybrid FDTD algorithm for electromagnetic analysis of fine structures
Results in Physics, 2021 A new hybrid Finite-Difference Time-Domain (hybrid FDTD) algorithm is proposed in this paper. This hybrid FDTD method combines the superiorities of explicit unconditionally stable FDTD (US-FDTD) and traditional FDTD methods to achieve unconditional ...
Sihan Zhao +4 more
doaj
Fabricating Mass‐Producible High‐Performance Metaholograms Using Sol‐Gel‐Processed TiO2
Advanced Materials Interfaces, EarlyView.Mass production of metaholograms on 6‐in. glass is achieved through nanoimprint lithography. TiO₂ sol‐gel is used as an imprint resist, exhibiting a high refractive index in the visible region. Through heat treatment at 600 °C, TiO₂ gel crystallizes into the anatase phase, allowing the fabrication of high‐resolution images with high optical efficiency.
Hyoin Song +6 more
wiley +1 more source
InfoMat, Volume 4, Issue 12, December 2022., 2022 Metamaterials provide unique opportunities for exciting sensing functionalities and applications, while suffering from severe performance limitations due to noise interference and design constraints. By subtly controlling and integrating different Fano‐resonant phases, a dual‐phase strategy is developed to breakthrough these limitations.
Hong Zhou +4 more
wiley +1 more source