Results 11 to 20 of about 8,816 (222)

CALCULATION OF TEMPERATURE DISTRIBUTION IN HEAVY OIL RESERVOIRS BY ELECTROMAGNETIC HEATING

CT&F Ciencia, Tecnología & Futuro, 2023
The introduction of heat into a reservoir has proven to be an effective way to reduce the viscosity of heavy oils by increasing the temperature in the formation.
Herling Gonzalez Alvarez, Alberto Raul Pinzon Díaz, Claudia Lorena Delgadillo Aya, Eduin Orlando Muñoz Mazo   +3 more
doaj   +1 more source

Peculiarities of focusing circularly and radially polarized super-Gaussian beams using ring gratings with varying relief height

Компьютерная оптика, 2022
The focusing features of a super-Gaussian beam, as well as Laguerre-super-Gaussian (1,0) modes with radial and circular polarizations on ring gratings (direct and inverse) with a variable height of individual relief rings were investigated in this paper.
D.A. Savelyev
doaj   +1 more source

Unified GSTC-FDTD Algorithm for the Efficient Electromagnetic Analysis of 2D Dispersive Materials [PDF]

Journal of Electromagnetic Engineering and Science, 2023
The finite-difference time-domain (FDTD) method has been widely used for the electromagnetic wave analysis of complex media. Conventional FDTD analyses of very thin two-dimensional (2D) dispersive materials require overwhelming computing resources ...
Sangeun Jang, Jae-Woo Baek, Jeahoon Cho, Kyung-Young Jung   +3 more
doaj   +1 more source

Partially Implicit FDTD (PI-FDTD) Method for Lower Dispersion and Anisotropic Errors

IEEE Access, 2022
A new partially implicit 3D FDTD (PI-FDTD) method is introduced. The method is not unconditionally stable, but its stability limit is 6 times higher than that of the classic Yee’s FDTD method.
Mehmet Kusaf, Abdullah Yucel Oztoprak
doaj   +1 more source

Research on Crosstalk Characteristics between Intersecting Polymer Micro-nano Fibers

Guangtongxin yanjiu, 2021
In order to reduce the crosstalk between the densely arranged polymer micro-nano fibers, this paper proposes to analyze the dependence of crosstalk on the intersection angle, diameter, separation, modal polarizations and wavelength of two intersecting ...
Yu-ling SHANG, Jia-qi WANG, Wen-jie GUO, Chun-quan LI   +3 more
doaj   +1 more source

Estudo comparativo de códigos paralelos em Fortran, C e Java na análise de uma antena monopolo, utilizando técnica numérica de FDTD

Revista Principia, 2006
As técnicas numéricas são ferramentas extremamente poderosas utilizadas na solução de diversos problemas, pois são capazes de manipular grandes quantidades de dados, com complicadas geometrias, que são tão comuns na prática de simulações empregadas nas ...
Josivaldo de Souza Araújo, Carlos Leonidas da Silva Souza Sobrinho, Rodrigo Melo e Silva de Oliveira, Carlos Renato Lisboa Francês   +3 more
doaj   +1 more source

Features of a Gaussian beam near-field diffraction upon variations in the relief height of subwavelength silicon optical elements

Компьютерная оптика, 2023
Features of the near-field diffraction of Gaussian beams and Laguerre-Gauss modes by silicon subwavelength optical elements with varying relief height were studied in this paper using a finite-difference time-domain method.
D.A. Savelyev
doaj   +1 more source

AI-Enhanced GWO-FDTD Co-Design of Multi-Band Plasmonic Nanorings for Multiplexed Biosensing [PDF]

Journal of Optoelectronical Nanostructures
In this paper, we explore the notable advancements in optical biosensors that have emerged over the past decade. This analysis includes innovative fabrication techniques and the growing areas of application.
Mohsen Nasrolahi, Ali farmani, Ashkan Horri, Hossein Hatami   +3 more
doaj   +1 more source

Efficient Finite-Difference Time-Domain Modeling of Time-Varying Dusty Plasma [PDF]

Journal of Electromagnetic Engineering and Science, 2022
The finite-difference time-domain (FDTD) method has been widely used for the electromagnetic analysis of dusty plasma sheath in reentering hypersonic vehicles.
Yong-Jin Kim, Jeahoon Cho, Kyung-Young Jung   +2 more
doaj   +1 more source

Performance Improvement of Ultrathin CIGS Solar Cells Using Al Plasmonic Nanoparticles: The Effect of the Position of Nanoparticles [PDF]

Journal of Optoelectronical Nanostructures, 2020
CIGS solar cells are regarded to be one of the best thin film solar cells withefficiencies up to 22.6%, which exceeds the current multicrystalline Si record efficiency(21.9%).
Ali Abdolahzadeh Ziabari, Sahar Royanian, Reza Yousefi, Saleh Ghoreishi   +3 more
doaj