Results 61 to 70 of about 8,562 (255)

Photonic Time Crystals and Time‐Varying Electromagnetic Metamatter: A New Direction for Ultrafast Tunable Photonic and Microwave Materials and Devices

Advanced Science, EarlyView.
Photonic time crystals (PTCs) are systems in which electromagnetic parameters are modulated periodically in time, producing momentum bandgaps via temporal scattering rather than spatial Bragg processes. This review examines the theoretical frameworks, modeling, and computational tools for time‐varying media, and summarizes experimental demonstrations ...
Ranjan Kumar Patel, Shriram Ramanathan, Ronald P. Jenkins, Michael J. Carter   +3 more
wiley   +1 more source

A FDTD model for the post-reception synthetic focusing surface penetrating radar with mine detecting applications

, 1999
Surface penetrating radar (SPR) is extensively used in military, civil, geophysical and archaeological applications. There has been an increasing emphasis on the use of SPR in the identification of buried unexploded ordnance, such as anti-tank mines ...
Nilavalan, R, Benjamin, R, Hilton, GS
core   +1 more source

Modified Splitting FDTD Methods for Two-Dimensional Maxwell’s Equations [PDF]

, 2017
In this paper, we develop a new method to reduce the error in the splitting finite-difference method of Maxwell’s equations. By this method two modified splitting FDTD methods (MS-FDTDI, MS-FDTDII) for the two-dimensional Maxwell equations are proposed ...
Liping Gao, Shouhui Zhai
core   +1 more source

Singularity Processing Method of Microstrip Line Edge Based on LOD-FDTD

International Journal of Antennas and Propagation, 2014
In order to improve the performance of the accuracy and efficiency for analyzing the microstrip structure, a singularity processing method is proposed theoretically and experimentally based on the fundamental locally one-dimensional finite difference ...
Lei Li, Xin Zhang, Yingsong Li
doaj   +1 more source

Combined Ray-Tracing/FDTD and Network Planner Methods for the Design of Massive MIMO Networks

IEEE Access, 2020
The design of a massive MIMO network requires a channel model that captures the Spatio-temporal dimensions of the propagation environment. In this paper, we propose a novel method combining Hybrid Raytracing - Finite difference time domain (FDTD) and ...
Michel Matalatala Tamasala, Sergei Shikhantsov, Margot Deruyck, Emmeric Tanghe, David Plets, Sotirios K. Goudos, Luc Martens, Wout Joseph   +7 more
doaj   +1 more source

Ultrabroadband and Highly Sensitive Short‐Wave Infrared Molecular Fingerprinting via Acoustic MXene Plasmons

Advanced Science, EarlyView.
Acoustic plasmons in Ti3C2Tx MXene strongly compress infrared electromagnetic fields and enhance light–matter interactions at the nanoscale. This platform couples broadband plasmon excitations with molecular vibrations, enabling simultaneous sensing of high‐ and low‐frequency vibrational modes in ultrathin PMMA and graphene oxide films, and extending ...
Changhoon Park, Jisung Kwon, Nu‐Ri Park, Hyerim Kim, Hyeju Kim, Yury Gogotsi, Chong Min Koo, Myung‐Ki Kim   +7 more
wiley   +1 more source

Comparison of Geoelectric Fields Computed by the Complex Image, Magnetotelluric, and Finite‐Difference Time‐Domain Methods

Space Weather
It is important to be able to accurately predict geoelectric field behavior so that potential space weather hazards to large grounded infrastructure, such as electric power grids, smart grids, oil and gas pipelines, and railway systems, can be better ...
Prashanna S. Paneru, Darcy Cordell, Jamesina J. Simpson, Mark B. Moldwin   +3 more
doaj   +1 more source

Comparison of FDTD and TDWP Methods for Simulating Electromagnetic Wave Propagation above Terrains

Journal of Microwaves, Optoelectronics and Electromagnetic Applications
Researchers have always been in face of path loss calculation in different media for applications such as telecommunication link design. Wave propagation calculations in large spaces using the FDTD method is time-consuming and imposes a great ...
Mahmoud Fallah, Amir. H Nazeri
doaj   +1 more source

Improving High-Speed Interconnect Modeling: The Theta-Method for Accurate Simulation of Skin Effect and Computational Efficiency [PDF]

ITM Web of Conferences
This paper presents a novel θ-method for modeling coupled interconnects in high-speed electronic circuits, addressing the limitations of conventional Finite-Difference Time-Domain (FDTD) techniques.
Ait Errais Mouaad, Ait Belaid Khaoula, Belahrach Hassan, Zeroual Abdelouhab   +3 more
doaj   +1 more source

Dumbbell‐Structured Plasmonic‐Enhanced Optical Nanoprobes Boosting Photo‐Magnetic‐Acoustic Multimodal Imaging‐Guided Photodynamic‐Photothermal Synergistic Treatment and Immunogenic Death in Nasopharyngeal Carcinoma

Advanced Science, EarlyView.
This study reports a novel rationally‐designed optical nanoprobe based on dumbbell‐shaped mesoporous silica‐coated gold nanorods, loaded with rare‐earth oxides, photosensitizers, and tumor‐targeted peptides, enabling plasmonic‐enhanced multimodal imaging and PTT‐PDT synergy.
Baikang Zhuang, Yubiao Yang, Wen Han, Yi Tang, Chengxin Yao, Fuli Zhao, Wenxiao Fang, Jinjie Li, Xiaolan Huo, Yiqian An, Yuanzhi Shao, Botao Gao, Jinchang Yin   +12 more
wiley   +1 more source