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Journal articles on the topic 'Finite-Difference Time Domain (FDTD)'

Author: Grafiati

Published: 4 June 2021

Last updated: 26 July 2025

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1

Kim, Yong-Jin, Jeahoon Cho, and Kyung-Young Jung. "Efficient Finite-Difference Time-Domain Modeling of Time-Varying Dusty Plasma." Journal of Electromagnetic Engineering and Science 22, no. 4 (2022): 502–8. http://dx.doi.org/10.26866/jees.2022.4.r.115.

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The finite-difference time-domain (FDTD) method has been widely used for the electromagnetic analysis of dusty plasma sheath in reentering hypersonic vehicles. The time-varying characteristics of dusty plasma should be considered to accurately analyze THz wave propagation in dusty plasma. In this work, we propose an efficient FDTD modeling of time-varying dusty plasma based on the combination of the bilinear transform and the state-space approach. The proposed FDTD formulation for time-varying dusty plasma can lead to a significant improvement in computational efficiency against the convention

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Na, Dong-Yeop, and Weng Cho Chew. "Quantum Electromagnetic Finite-Difference Time-Domain Solver." Quantum Reports 2, no. 2 (2020): 253–65. http://dx.doi.org/10.3390/quantum2020016.

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We employ another approach to quantize electromagnetic fields in the coordinate space, instead of the mode (or Fourier) space, such that local features of photons can be efficiently, physically, and more intuitively described. To do this, coordinate-ladder operators are defined from mode-ladder operators via the unitary transformation of systems involved in arbitrary inhomogeneous dielectric media. Then, one can expand electromagnetic field operators through the coordinate-ladder operators weighted by non-orthogonal and spatially-localized bases, which are propagators of initial quantum electr

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Aznavourian, Ronald, Sébastien Guenneau, Bogdan Ungureanu, and Julien Marot. "Morphing for faster computations with finite difference time domain algorithms." EPJ Applied Metamaterials 9 (2022): 2. http://dx.doi.org/10.1051/epjam/2021011.

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In the framework of wave propagation, finite difference time domain (FDTD) algorithms, yield high computational time. We propose to use morphing algorithms to deduce some approximate wave pictures of their interactions with fluid-solid structures of various shapes and different sizes deduced from FDTD computations of scattering by solids of three given shapes: triangular, circular and elliptic ones. The error in the L2 norm between the FDTD solution and approximate solution deduced via morphing from the source and destination images are typically less than 1% if control points are judiciously

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Dawood, A. "Finite Difference Time-Domain Modelling of Metamaterials: GPU Implementation of Cylindrical Cloak." Advanced Electromagnetics 2, no. 2 (2013): 10. http://dx.doi.org/10.7716/aem.v2i2.171.

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Finite difference time-domain (FDTD) technique can be used to model metamaterials by treating them as dispersive material. Drude or Lorentz model can be incorporated into the standard FDTD algorithm for modelling negative permittivity and permeability. FDTD algorithm is readily parallelisable and can take advantage of GPU acceleration to achieve speed-ups of 5x-50x depending on hardware setup. Metamaterial scattering problems are implemented using dispersive FDTD technique on GPU resulting in performance gain of 10x-15x compared to conventional CPU implementation.

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Jin, Xiu Hai, Yi Wang Chen, and Pin Zhang. "An Algorithm of 3-D ADI-R-FDTD Based on Non-Zero Divergence Relationship." Advanced Materials Research 317-319 (August 2011): 1172–76. http://dx.doi.org/10.4028/www.scientific.net/amr.317-319.1172.

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In this letter, an alternating-direction reduced finite-difference time-domain (ADI-R-FDTD) method is presents. It is proven that the divergence relationship of electric-field and magnetic-field is non-zero even in charge-free regions, when the electric-field and magnetic-field are calculated with alternating-direction finite-difference time-domain (ADI-FDTD) method in 3 dimensions case, and the expression of the divergence relationship is derived. Based on the non-zero divergence relationship, the ADI-FDTD method is combined with the reduced finite-difference time-domain (R-FDTD) method. In t

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Zhang, Lei, Tong Bin Yu, De Xin Qu, and Xiao Gang Xie. "Analysis of Microstrip Circuit by Using Finite Difference Time Domain (FDTD) Method." Applied Mechanics and Materials 347-350 (August 2013): 1758–62. http://dx.doi.org/10.4028/www.scientific.net/amm.347-350.1758.

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The microstrip circuit is mostly analyzed in transform domain, because its equivalent circuit equation is often nonlinear differential equation, which is easily analyzed in transform domain relatively, but hardly did in time domain, so the analysis of microstrip circuit is a hard work in time domain. In this paper, the FDTD method is used to analyze the microstrip circuit in time domain, by transforming the nonlinear differential equation into time domain iterative equation, selecting suitable time step, and having an iterative computing, the time domain numerical solution can be solved. The F

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Chen, Juan, and Chunhui Mou. "The HIE-FDTD Method for Simulating Dispersion Media Represented by Drude, Debye, and Lorentz Models." Nanomaterials 13, no. 7 (2023): 1180. http://dx.doi.org/10.3390/nano13071180.

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The hybrid implicit–explicit finite-difference time-domain (HIE-FDTD) method is a weakly conditionally stable finite-difference time-domain (FDTD) method that has attracted much attention in recent years. However due to the dispersion media such as water, soil, plasma, biological tissue, optical materials, etc., the application of the HIE-FDTD method is still relatively limited. Therefore, in this paper, the HIE-FDTD method was extended to solve typical dispersion media by combining the Drude, Debye, and Lorentz models with hybrid implicit–explicit difference techniques. The advantage of the p

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8

Varadarajan, V., and R. Mittra. "Finite-difference time-domain (FDTD) analysis using distributed computing." IEEE Microwave and Guided Wave Letters 4, no. 5 (1994): 144–45. http://dx.doi.org/10.1109/75.289515.

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9

Holland, R. "Finite-difference time-domain (FDTD) analysis of magnetic diffusion." IEEE Transactions on Electromagnetic Compatibility 36, no. 1 (1994): 32–39. http://dx.doi.org/10.1109/15.265477.

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10

HENDI, A., F. ALKALLAS, H. ALMOUSSA, et al. "FINITE DIFFERENCE TIME-DOMAIN METHOD FOR SIMULATING DIELECTRIC MATERIALS AND METAMATERIALS." Digest Journal of Nanomaterials and Biostructures 15, no. 3 (2020): 707–19. http://dx.doi.org/10.15251/djnb.2020.153.707.

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In this study, Finite Difference Time Domain (FDTD) is employed to model and simulate both dielectric materials and metamaterials. Interestingly, the metamaterials own very peculiar characteristics that are related to the simultaneous negative permittivity and permeability. Based on FDTD technique, we can simulate the electromagnetic devices with the inclusion of the simultaneous electric and magnetic fields over time. The striking features of metamaterials illustrate the increase and backward propagation as well as the energy absorption inone-dimensional(1D) ortwo-dimensional(2D)systems. Thes

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11

Angraini, Lily Maysari, and I. Wayan Sudiarta. "Non-Standard and Numerov Finite Difference Schemes for Finite Difference Time Domain Method to Solve One- Dimensional Schrödinger Equation." Journal of Physics: Theories and Applications 2, no. 1 (2018): 27. http://dx.doi.org/10.20961/jphystheor-appl.v2i1.26352.

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<span>The purpose of this paper is to show some improvements of the finite-difference time domain (FDTD) method using Numerov and non-standard finite difference (NSFD) schemes for solving the one-dimensional Schr</span><span>ö</span><span>dinger equation. Starting with results of the unmodified FDTD method, Numerov-FD and NSFD are applied iteratively to produce more accurate results for eigen energies and wavefunctios. Three potential wells, infinite square well, harmonic oscillator and Poschl-Teller, are used to compare results of FDTD calculations. Significant i

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12

Biskin, Osman Said, and Serkan Aksoy. "A Simplified Novel Link for A Simplified Stability Analysis of Finite Difference Time Domain Method." WSEAS TRANSACTIONS ON ELECTRONICS 14 (June 21, 2023): 34–42. http://dx.doi.org/10.37394/232017.2023.14.4.

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Numerical stability and numerical dispersion analyses are critical subjects for Finite Difference Time Domain (FDTD) method. To perform these analyses, first of all, an equivalency of the FDTD numerical dispersion equation for Maxwell’s equations and wave equation is proven in this study. Then, based on those calculations, a simplified version of a novel link is developed. Using this simplified version, a stability criterion and an amplification factor of the FDTD method are more easily extracted. Therefore, the FDTD stability analysis becomes simpler. The theoretical findings are validated by

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Commer, Michael, G. Michael Hoversten, and Evan Schankee Um. "Transient-electromagnetic finite-difference time-domain earth modeling over steel infrastructure." GEOPHYSICS 80, no. 2 (2015): E147—E162. http://dx.doi.org/10.1190/geo2014-0324.1.

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Including highly conductive steel infrastructure into electromagnetic (EM) earth modeling is motivated by the fact that long metal-cased boreholes have the potential to be used as boosting antennas that enable larger source dipole moments and greater signal penetration depths. Unfortunately, geophysical algorithms designed to simulate EM responses over rather regional scales are complicated by material property contrasts and structure geometries that are more typical for EM engineering applications. Hence, the great majority of earth-modeling algorithms that consider EM responses from steel-ca

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Tong, Xiaozhong, and Ya Sun. "A Hybrid Chebyshev Pseudo-Spectral Finite-Difference Time-Domain Method for Numerical Simulation of 2D Acoustic Wave Propagation." Mathematics 12, no. 1 (2023): 117. http://dx.doi.org/10.3390/math12010117.

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In this study, a hybrid Chebyshev pseudo-spectral finite-difference time-domain (CPS-FDTD) algorithm is proposed for simulating 2D acoustic wave propagation in heterogeneous media, which is different from the other traditional numerical schemes such as finite element and finite difference. This proposed hybrid method integrates the efficiency of the FDTD approach in the time domain and the high accuracy of the CPS technique in the spatial domain. We present the calculation formulas of this novel approach and conduct simulation experiments to test it. The biconjugate gradient is solved by combi

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Xu, Bo-Ao, Yan-Tao Duan, Bin Chen, Yun Yi, and Kang Luo. "A New Efficient Algorithm for the 2D WLP-FDTD Method Based on Domain Decomposition Technique." International Journal of Antennas and Propagation 2016 (2016): 1–6. http://dx.doi.org/10.1155/2016/3163781.

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This letter introduces a new efficient algorithm for the two-dimensional weighted Laguerre polynomials finite difference time-domain (WLP-FDTD) method based on domain decomposition scheme. By using the domain decomposition finite difference technique, the whole computational domain is decomposed into several subdomains. The conventional WLP-FDTD and the efficient WLP-FDTD methods are, respectively, used to eliminate the splitting error and speed up the calculation in different subdomains. A joint calculation scheme is presented to reduce the amount of calculation. Through our work, the iterati

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Kast, Joshua, and Atef Elsherbeni. "Finite-Difference Time-Domain Simulation of Arbitrary Impedance using One Port S-Parameter." Applied Computational Electromagnetics Society 35, no. 9 (2020): 985–91. http://dx.doi.org/10.47037/2020.aces.j.350902.

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Many modern radio-frequency devices comprise both lumped-element components and complex geometries. Simulation of such a device requires modeling the electromagnetic interactions with both geometric features and lumped components. We present a method for including arbitrary lumped-element components into finite-difference time-domain (FDTD) simulations. The lumped-element components, which are described by their scattering parameters, are modeled in the Yee grid as dependent voltage sources. The mathematical formulation is described, along with its implementation into a FDTD simulator. For ver

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17

Kim, Minhyuk, and SangWook Park. "Modified Finite-Difference Time-Domain Method for Hertzian Dipole Source under Low-Frequency Band." Electronics 10, no. 22 (2021): 2733. http://dx.doi.org/10.3390/electronics10222733.

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In this paper, a modified finite-difference time-domain (FDTD) method is proposed for the rapid analysis of a Hertzian dipole source in the low-frequency band. The FDTD technique is one of the most widely used methods for interpreting high-resolution problems such as those associated with the human body. However, this method has been difficult to use in the low-frequency band as the required number of iterations has increased significantly in such cases. To avoid this problem, FDTD techniques using quasi-static assumptions in low-frequency bands were used. However, this method was applied only

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Teguh Puja Negara, Hendradi Hardhienata, Irzaman, and Husin Alatas. "Design Simulation of Circular Photonic Crystal Structures for the Development of Biomedical Sensor Based on Finite Difference Method." International Journal of Nanoelectronics and Materials (IJNeaM) 16, DECEMBER (2023): 9–16. http://dx.doi.org/10.58915/ijneam.v16idecember.381.

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Optical analysis of a circular photonic crystal structure consisting of a metal-dielectric layer and a defect layer sandwiched between two dielectric layers has been carried out using the Finite Difference Frequency Domain (FDFD) method and the Finite Difference Time Domain (FDTD) method. The FDTD method can describe the propagation of electromagnetic waves on the structure at any time, while the FDFD method can describe the characteristics of the wave interaction with the structure in a steady state. We observed strong resonances at certain wavelengths when using three different dielectric ma

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Hussein, Yasser, James E. Spencer, and Samir El-Ghazaly. "Finite-Difference Time-Domain (FDTD) Simulation of Novel Terahertz Structures." INTERNATIONAL JOURNAL OF COMPUTERS & TECHNOLOGY 13, no. 2 (2014): 4164–82. http://dx.doi.org/10.24297/ijct.v13i2.2903.

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Previous work on compact, variable, efficient, high brightness radiation sources is extended by calculating the radiated power and angular distributions for different configurations and drive sources. Figures of merit are defined in terms of efficiencies or effective impedances such as the radiation coupling impedance Zr .Characteristics of representative cases are discussed in terms of a few basic parameters. Conditions for interference are discussed and demonstrated. Finally, we discuss some further possibilities together with various impediments to realizing such devices. The differences be

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Kong, Soon-Cheol, and Young-Wan Choi. "Finite-Difference Time-Domain (FDTD) Model for Traveling-Wave Photodetectors." Journal of Computational and Theoretical Nanoscience 6, no. 11 (2009): 2380–87. http://dx.doi.org/10.1166/jctn.2009.1292.

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21

Johnson, J. Michael, and Yahya Rahmat-Samil. "MR/FDTD: A multiple-region finite-difference--time-domain method." Microwave and Optical Technology Letters 14, no. 2 (1997): 101–5. http://dx.doi.org/10.1002/(sici)1098-2760(19970205)14:2<101::aid-mop8>3.0.co;2-j.

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22

Reineix, A., T. Monediere, and F. Jecko. "Ferrite analysis using the finite-difference time-domain (FDTD) method." Microwave and Optical Technology Letters 5, no. 13 (1992): 685–86. http://dx.doi.org/10.1002/mop.4650051311.

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23

WAGNER, CHRISTOPHER L., and JOHN B. SCHNEIDER. "AN ACOUSTIC FINITE-DIFFERENCE TIME-DOMAIN ALGORITHM WITH ISOTROPIC DISPERSION." Journal of Computational Acoustics 13, no. 02 (2005): 365–84. http://dx.doi.org/10.1142/s0218396x05002670.

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The classic Yee Finite-Difference Time-Domain (FDTD) algorithm employs central differences to achieve second-order accuracy, i.e., if the spatial and temporal step sizes are reduced by a factor of n, the phase error associated with propagation through the grid will be reduced by a factor of n2. The Yee algorithm is also second-order isotropic meaning the error as a function of the direction of propagation has a leading term which depends on the square of the discretization step sizes. An FDTD algorithm is presented here that has second-order accuracy but fourth-order isotropy. This algorithm p

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DU, LIU-GE, KANG LI, FAN-MIN KONG, and YUAN HU. "PARALLEL 3D FINITE-DIFFERENCE TIME-DOMAIN METHOD ON MULTI-GPU SYSTEMS." International Journal of Modern Physics C 22, no. 02 (2011): 107–21. http://dx.doi.org/10.1142/s012918311101618x.

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Finite-difference time-domain (FDTD) is a popular but computational intensive method to solve Maxwell's equations for electrical and optical devices simulation. This paper presents implementations of three-dimensional FDTD with convolutional perfect match layer (CPML) absorbing boundary conditions on graphics processing unit (GPU). Electromagnetic fields in Yee cells are calculated in parallel millions of threads arranged as a grid of blocks with compute unified device architecture (CUDA) programming model and considerable speedup factors are obtained versus sequential CPU code. We extend the

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Xu, Penglong, and Jinjie Liu. "Iteration-Based Temporal Subgridding Method for the Finite-Difference Time-Domain Algorithm." Mathematics 12, no. 2 (2024): 302. http://dx.doi.org/10.3390/math12020302.

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A novel temporal subgridding technique is proposed for the finite-difference time-domain (FDTD) method to solve two-dimensional Maxwell’s equations of electrodynamics in the TEz mode. Based on the subgridding FDTD algorithm with a separated spatial and temporal interface, our method focuses on the temporal subgridding region, as it is the main source of late-time instability. Different from other subgridding algorithms that work on the interpolation between coarse and fine meshes, our method stabilizes the solution by using iterative updating equations on the temporal coarse–fine mesh interfac

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Rafiee, Mehran, Hind Ahmed, Subhash Chandra, Conor Mc Loughlin, Aaron Glenn, and Sarah McCormack. "Towards Reducing Computational Costs of Finite Difference Time Domain Algorithm in Plasmonic Optical Properties Modelling of Metal Nanoparticles." Materials Science Forum 995 (June 2020): 203–8. http://dx.doi.org/10.4028/www.scientific.net/msf.995.203.

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Finite difference time domain (FDTD) method is a grid-based, robust and straightforward method to model and study the optical properties of metal nanoparticles (MNPs). However, high computational costs of FDTD including simulation time and memory demand mitigate the interest in this algorithm. In this paper, FDTD algorithm is reviewed and reasons of high computational cost requirement in FDTD are investigated. Computational costs are directly characterised by the resolution and size of FDTD grid (known as Yee grid). High FDTD grid resolution is essentially required in MNPs plasmonic modelling

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Shragge, Jeffrey, and Benjamin Tapley. "Solving the tensorial 3D acoustic wave equation: A mimetic finite-difference time-domain approach." GEOPHYSICS 82, no. 4 (2017): T183—T196. http://dx.doi.org/10.1190/geo2016-0691.1.

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Generating accurate numerical solutions of the acoustic wave equation (AWE) is a key computational kernel for many seismic imaging and inversion problems. Although finite-difference time-domain (FDTD) approaches for generating full-wavefield solutions are well-developed for Cartesian computational domains, several challenges remain when applying FDTD approaches to scenarios arguably best described by more generalized geometry. In particular, how best to generate accurate and stable FDTD solutions for scenarios involving grids conforming to complex topography or internal surfaces. We address th

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Mock, Adam. "Calculating Scattering Spectra using Time-domain Modeling of Time-modulated Systems." Applied Computational Electromagnetics Society 35, no. 11 (2021): 1288–89. http://dx.doi.org/10.47037/2020.aces.j.351113.

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Obtaining agreement between theoretical predictions that assume single-frequency excitation and finite-difference time-domain (FDTD) simulations that employ broadband excitation in the presence of time-varying materials is challenging due to frequency mixing. A simple solution is proposed to reduce artifacts in FDTD-calculated spectra from the frequency mixing induced by harmonic refractive index modulation applicable to scenarios in which second order and higher harmonics are negligible. Advantages of the proposed method are its simplicity and applicability to arbitrary problems including res

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Dunn, Kyle G., and Michael B. Muhlestein. "An implementation of a finite difference time domain method for second-order nonlinear acoustic equations." Journal of the Acoustical Society of America 152, no. 4 (2022): A251. http://dx.doi.org/10.1121/10.0016177.

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The framework of the numerical scheme presented in this talk is that of the finite-difference time-domain (FDTD) method published by Sparrow and Raspet [J. Acoust. Soc. Am. 90, 1991]. The method is fourth-order in space and second-order in time when propagating in homogeneous media. Our implementation resides in a Cartesian coordinate system and is meant to be used in inhomogeneous media. In the neighborhood of inhomogeneities the FDTD method is reduced to second-order in space. Of interest to our applications is the simulation of infinite domains, which is achieved using the perfectly matched

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Ruiz Cabello, Miguel, Antonio J. Martín Valverde, Borja Plaza, et al. "A Subcell Finite-Difference Time-Domain Implementation for Narrow Slots on Conductive Panels." Applied Sciences 13, no. 15 (2023): 8949. http://dx.doi.org/10.3390/app13158949.

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Efficiently modeling thin features using the finite-difference time-domain (FDTD) method involves a considerable reduction in the spatial mesh size. However, in real-world scenarios, such reductions can lead to unaffordable memory and CPU requirements. In this manuscript, we present two stable and efficient techniques in FDTD to handle narrow apertures on conductive thin panels. One technique employs conformal methods, while the other utilizes subgridding methods. We validate their performance compared to the classical Gilbert-Holland model and present experimental results in reverberation env

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Mankotia, Amit, and Anil Kumar Shukla. "Detection of Vitiligo Using Optical Sensor Based on 2-D Photonic Crystals." Journal of Physics: Conference Series 2426, no. 1 (2023): 012020. http://dx.doi.org/10.1088/1742-6596/2426/1/012020.

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Abstract This structure proposes the creation of the optical biosensor that can be used to detect vitiligo caused to pigment loss. For accomplishing this, a pair of 2-D photonic crystal structures, such as the K3 and K7 resonators, are examined. The study of both resonator structures is succeeded using (FDTD) Finite Difference Time Domain. The Lumerical simulation tool is used to model these structures in the Finite Difference Time Domain (FDTD). The subsequent optical properties of different pigmentation in human skin are investigated, and the refractive indexes information are entered into L

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Higgins, Alex, and Martin Siderius. "Acoustic scattering from dynamic rough ocean surfaces using finite-difference time-domain modeling techniques." Journal of the Acoustical Society of America 152, no. 4 (2022): A252—A253. http://dx.doi.org/10.1121/10.0016183.

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Established models for underwater acoustic propagation and scattering typically assume the sea-surface to be either perfectly smooth or rough but static in time. When the sea-surface is rough and moving, received signals show anomalies such as additional transmission losses (due to scattering) and Doppler effects (due to surface motion). Understanding the mechanisms behind these anomalies leads to better sonar system designs without having to perform expensive at-sea experiments. The Finite-Difference Time-Domain (FDTD) method is ideal to predict these physical phenomena. This work presents a

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Rajeswari, R., and R. Jothilakshmi. "Modeling and Simulation of Plasmonic Nanoparticles Using Finite-Difference Time-Domain Method: A Review." Materials Science Forum 781 (March 2014): 33–44. http://dx.doi.org/10.4028/www.scientific.net/msf.781.33.

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In recent years, plasmonic nanoparticles are widely used in a wide range of applications including, biomedicine, spectroscopy, catalysis and energy harvesting. The properties of these particles are due to the interaction of these particles with electromagnetic irradiation that gives rise to the localized surface plasmons that are collective oscillations of their surface conduction electrons. This interaction influences its light absorption and scattering and thus, the particle color. Simulation of particle plasmons can be done by solving Maxwells equations for metallic nanoparticles embedded i

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LIANG, G. Q., and Y. D. CHONG. "OPTICAL RESONATOR ANALOG OF A PHOTONIC TOPOLOGICAL INSULATOR: A FINITE-DIFFERENCE TIME-DOMAIN STUDY." International Journal of Modern Physics B 28, no. 02 (2013): 1441007. http://dx.doi.org/10.1142/s0217979214410070.

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A periodic lattice of optical ring resonators can act as a photonic topological insulator, with the role of spin played by the direction of propagation of light within each ring. Using finite-difference time-domain (FDTD) simulations, we compute the projected band diagram of the system and its transmission spectrum, and demonstrate the existence of the topological edge states. The FDTD results are in good agreement with the predictions of transfer matrix theory.

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Wei, Jianguo, Song Wang, Qingzhi Hou, and Jianwu Dang. "Generalized Finite Difference Time Domain Method and Its Application to Acoustics." Mathematical Problems in Engineering 2015 (2015): 1–13. http://dx.doi.org/10.1155/2015/640305.

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A meshless generalized finite difference time domain (GFDTD) method is proposed and applied to transient acoustics to overcome difficulties due to use of grids or mesh. Inspired by the derivation of meshless particle methods, the generalized finite difference method (GFDM) is reformulated utilizing Taylor series expansion. It is in a way different from the conventional derivation of GFDM in which a weighted energy norm was minimized. The similarity and difference between GFDM and particle methods are hence conveniently examined. It is shown that GFDM has better performance than the modified sm

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Adão, Ricardo M. R., Manuel Caño-Garcia, Christian Maibohm, Bruno Romeira, and Jana B. Nieder. "Oscillator Finite-Difference Time-Domain (O-FDTD) electric field propagation model: integrated photonics and networks." EPJ Web of Conferences 255 (2021): 01005. http://dx.doi.org/10.1051/epjconf/202125501005.

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The recently developed Lorentz Oscillator Model-inspired Oscillator Finite-Difference Time-Domain (O-FDTD) is one of the simplest FDTD models ever proposed, using a single field equation for electric field propagation. We demonstrate its versatility on various scales and benchmark its simulation performance against theory, conventional FDTD simulations, and experimental observations. The model’s broad applicability is demonstrated for (but not limited to) three contrasting realms: integrated photonics components on the nano- and micrometer scale, city-wide propagating radiofrequency signals re

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He, Xinbo, Shenggang Mu, Xudong Han, and Bing Wei. "Novel Research on a Finite-Difference Time-Domain Acceleration Algorithm Based on Distributed Cluster Graphic Process Units." Applied Sciences 15, no. 9 (2025): 4834. https://doi.org/10.3390/app15094834.

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In computational electromagnetics, the finite-difference time-domain (FDTD) method is recognized for its volumetric discretization approach. However, it can be computationally demanding when addressing large-scale electromagnetic problems. This paper introduces a novel approach by incorporating Graphic Process Units (GPUs) into an FDTD algorithm. It leverages the Compute Unified Device Architecture (CUDA) along with OpenMPI and the NVIDIA Collective Communications Library (NCCL) to establish a parallel scheme for the FDTD algorithm in distributed cluster GPUs. This approach enhances the comput

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Zhu, Bao, Jiefu Chen, Wanxie Zhong, and Qing Huo Liu. "A Hybrid FETD-FDTD Method with Nonconforming Meshes." Communications in Computational Physics 9, no. 3 (2011): 828–42. http://dx.doi.org/10.4208/cicp.230909.140410s.

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AbstractA quasi non-overlapping hybrid scheme that combines the finite-difference time-domain (FDTD) method and the finite-element time-domain (FETD) method with nonconforming meshes is developed for time-domain solutions of Maxwell’s equations. The FETD method uses mixed-order basis functions for electric and magnetic fields, while the FDTD method uses the traditional Yee’s grid; the two methods are joined by a buffer zone with the FETD method and the discontinuous Galerkin method is used for the domain decomposition in the FETD subdomains. The main features of this technique is that it allow

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Vu, Duc-Quang, Nhat-Nam Nguyen, and Phan-Tu Vu. "RBF-FDTD Analysis of Lightning-Induced Voltages on Multi-Conductor Distribution Lines." Energies 18, no. 10 (2025): 2451. https://doi.org/10.3390/en18102451.

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Lightning-induced voltages on overhead distribution lines present a formidable obstacle to ensuring the reliability of power systems, evaluated through conventional numerical techniques, such as the Finite Difference Time Domain (FDTD) method and the Finite Element Time Domain (FETD) method. This study proposes a novel implementation of the Radial Basis Function-Finite Difference Time Domain (RBF-FDTD) method, extending the foundation of our previous work to address the field-to-line coupling equations governing such systems. The effectiveness and accuracy of this approach are rigorously valid

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40

Nicolini, Julio L., and José Ricardo Bergmann. "Finite-Difference Time Domain Techniques Applied to Electromagnetic Wave Interactions with Inhomogeneous Plasma Structures." International Journal of Antennas and Propagation 2018 (2018): 1–20. http://dx.doi.org/10.1155/2018/3476462.

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Motivated by the emerging field of plasma antennas, electromagnetic wave propagation in and scattering by inhomogeneous plasma structures are studied through finite-difference time domain (FDTD) techniques. These techniques have been widely used in the past to study propagation near or through the ionosphere, and their extension to plasma devices such as antenna elements is a natural development. Simulation results in this work are validated with comparisons to solutions obtained by eigenfunction expansion techniques well supported by the literature and are shown to have an excellent agreement

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41

Teshima, Yu, Takumi Nomura, Megumi Kato, Takao Tsuchiya, Genki Shimizu, and Shizuko Hiryu. "Effect of bat pinna on sensing using acoustic finite difference time domain simulation." Journal of the Acoustical Society of America 151, no. 6 (2022): 4039–45. http://dx.doi.org/10.1121/10.0011737.

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The practicality of the finite-difference time-domain (FDTD) method was confirmed by comparing head-related transfer functions obtained from a three-dimensional (3D) digital model of a bat ( Rhinolophus ferrumequinum nippon) head with acoustic experiments using a 3D printed physical model. Furthermore, we simulated the auditory directionality using a 3D digital model that was modified based on the pinna movement of a bat during echolocation and found that the alternating movements of the left and right pinna result in a binaural sound pressure difference for vertical sources. Using the FDTD me

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42

Fratoni, Giulia, Brian Hamilton, and Dario D'Orazio. "Feasibility of a finite-difference time-domain model in large-scale acoustic simulations." Journal of the Acoustical Society of America 152, no. 1 (2022): 330–41. http://dx.doi.org/10.1121/10.0012218.

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Wave-based techniques for room acoustics simulations are commonly applied to low frequency analysis and small-sized simplified environments. The constraints are generally the inherent computational cost and the challenging implementation of proper complex boundary conditions. Nevertheless, the application field of wave-based simulation methods has been extended in the latest research decades. With the aim of testing this potential, this work investigates the feasibility of a finite-difference time-domain (FDTD) code simulating large non-trivial geometries in wide frequency ranges. A representa

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43

Giovannetti, Giulio, Yong Wang, Naveen Kumar Tumkur Jayakumar, Jeff Barney, and Gianluigi Tiberi. "Magnetic Resonance Wire Coil Losses Estimation with Finite-Difference Time-Domain Method." Electronics 11, no. 12 (2022): 1872. http://dx.doi.org/10.3390/electronics11121872.

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Radiofrequency (RF) coils are used to transmit and receive signals in magnetic resonance (MR) systems. Optimized RF coil design has to take into account strategies to maximize the coil performance by choosing coil sizes and geometry for achieving the best signal-to-noise ratio (SNR). In particular, coil conductor and radiative loss contributions strongly affect the SNR value, with the first mainly playing a role in low-field MR systems especially, while the second could be the dominant coil loss mechanism for high-frequency tuned coils. This paper investigates the accuracy of the finite-differ

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44

Becker, A., and V. Hansen. "A hybrid method combining the Time-Domain Method of Moments, the Time-Domain Uniform Theory of Diffraction and the FDTD." Advances in Radio Science 5 (June 12, 2007): 107–13. http://dx.doi.org/10.5194/ars-5-107-2007.

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Abstract. In this paper a hybrid method combining the Time-Domain Method of Moments (TD-MoM), the Time-Domain Uniform Theory of Diffraction (TD-UTD) and the Finite-Difference Time-Domain Method (FDTD) is presented. When applying this new hybrid method, thin-wire antennas are modeled with the TD-MoM, inhomogeneous bodies are modelled with the FDTD and large perfectly conducting plates are modelled with the TD-UTD. All inhomogeneous bodies are enclosed in a so-called FDTD-volume and the thin-wire antennas can be embedded into this volume or can lie outside. The latter avoids the simulation of wh

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45

Teshima, Yu, Takumi Nomura, Megumi Kato, Takao Tsuchiya, Genki Shimizu, and Shizuko Hiryu. "Effect of bat pinna on sensing using acoustic finite difference time domain simulation." Journal of the Acoustical Society of America 151, no. 6 (2022): 4039–45. https://doi.org/10.5281/zenodo.13423966.

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Abstract:

(Uploaded by Plazi for the Bat Literature Project) The practicality of the finite-difference time-domain (FDTD) method was confirmed by comparing head-related transfer functions obtained from a three-dimensional (3D) digital model of a bat (Rhinolophus ferrumequinum nippon) head with acoustic experiments using a 3D printed physical model. Furthermore, we simulated the auditory directionality using a 3D digital model that was modified based on the pinna movement of a bat during echolocation and found that the alternating movements of the left and right pinna result in a binaural sound pressure

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46

Teshima, Yu, Takumi Nomura, Megumi Kato, Takao Tsuchiya, Genki Shimizu, and Shizuko Hiryu. "Effect of bat pinna on sensing using acoustic finite difference time domain simulation." Journal of the Acoustical Society of America 151, no. 6 (2022): 4039–45. https://doi.org/10.5281/zenodo.13423966.

Full text

Abstract:

(Uploaded by Plazi for the Bat Literature Project) The practicality of the finite-difference time-domain (FDTD) method was confirmed by comparing head-related transfer functions obtained from a three-dimensional (3D) digital model of a bat (Rhinolophus ferrumequinum nippon) head with acoustic experiments using a 3D printed physical model. Furthermore, we simulated the auditory directionality using a 3D digital model that was modified based on the pinna movement of a bat during echolocation and found that the alternating movements of the left and right pinna result in a binaural sound pressure

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47

Teshima, Yu, Takumi Nomura, Megumi Kato, Takao Tsuchiya, Genki Shimizu, and Shizuko Hiryu. "Effect of bat pinna on sensing using acoustic finite difference time domain simulation." Journal of the Acoustical Society of America 151, no. 6 (2022): 4039–45. https://doi.org/10.5281/zenodo.13423966.

Full text

Abstract:

(Uploaded by Plazi for the Bat Literature Project) The practicality of the finite-difference time-domain (FDTD) method was confirmed by comparing head-related transfer functions obtained from a three-dimensional (3D) digital model of a bat (Rhinolophus ferrumequinum nippon) head with acoustic experiments using a 3D printed physical model. Furthermore, we simulated the auditory directionality using a 3D digital model that was modified based on the pinna movement of a bat during echolocation and found that the alternating movements of the left and right pinna result in a binaural sound pressure

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48

Teshima, Yu, Takumi Nomura, Megumi Kato, Takao Tsuchiya, Genki Shimizu, and Shizuko Hiryu. "Effect of bat pinna on sensing using acoustic finite difference time domain simulation." Journal of the Acoustical Society of America 151, no. 6 (2022): 4039–45. https://doi.org/10.5281/zenodo.13423966.

Full text

Abstract:

(Uploaded by Plazi for the Bat Literature Project) The practicality of the finite-difference time-domain (FDTD) method was confirmed by comparing head-related transfer functions obtained from a three-dimensional (3D) digital model of a bat (Rhinolophus ferrumequinum nippon) head with acoustic experiments using a 3D printed physical model. Furthermore, we simulated the auditory directionality using a 3D digital model that was modified based on the pinna movement of a bat during echolocation and found that the alternating movements of the left and right pinna result in a binaural sound pressure

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49

Teshima, Yu, Takumi Nomura, Megumi Kato, Takao Tsuchiya, Genki Shimizu, and Shizuko Hiryu. "Effect of bat pinna on sensing using acoustic finite difference time domain simulation." Journal of the Acoustical Society of America 151, no. 6 (2022): 4039–45. https://doi.org/10.5281/zenodo.13423966.

Full text

Abstract:

(Uploaded by Plazi for the Bat Literature Project) The practicality of the finite-difference time-domain (FDTD) method was confirmed by comparing head-related transfer functions obtained from a three-dimensional (3D) digital model of a bat (Rhinolophus ferrumequinum nippon) head with acoustic experiments using a 3D printed physical model. Furthermore, we simulated the auditory directionality using a 3D digital model that was modified based on the pinna movement of a bat during echolocation and found that the alternating movements of the left and right pinna result in a binaural sound pressure

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50

Teshima, Yu, Takumi Nomura, Megumi Kato, Takao Tsuchiya, Genki Shimizu, and Shizuko Hiryu. "Effect of bat pinna on sensing using acoustic finite difference time domain simulation." Journal of the Acoustical Society of America 151, no. 6 (2022): 4039–45. https://doi.org/10.5281/zenodo.13423966.

Full text

Abstract:

(Uploaded by Plazi for the Bat Literature Project) The practicality of the finite-difference time-domain (FDTD) method was confirmed by comparing head-related transfer functions obtained from a three-dimensional (3D) digital model of a bat (Rhinolophus ferrumequinum nippon) head with acoustic experiments using a 3D printed physical model. Furthermore, we simulated the auditory directionality using a 3D digital model that was modified based on the pinna movement of a bat during echolocation and found that the alternating movements of the left and right pinna result in a binaural sound pressure

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