2 edition of **Periodic finite-difference time-domain analysis of negative-refractive-index metamaterials.** found in the catalog.

Periodic finite-difference time-domain analysis of negative-refractive-index metamaterials.

Titos Kokkinos

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- 8 Currently reading

Published
**2005**
.

Written in English

This thesis reports on a periodic Finite-Difference Time-Domain methodology for the analysis of loaded Transmission-Line Negative-Refractive-Index metamaterials. The modular unit cell of this periodic structure is simulated using the Finite-Difference Time-Domain technique and the computational domain is terminated with periodic boundary conditions. The proposed methodology is applied to the accurate and efficient dispersion analysis of the aforementioned structure and the calculation of the field patterns of the major supported modes. In turn, this methodology is properly extended in order to be employed for the full-wave analysis of Negative-Refractive-Index metamaterial-based leaky-wave antennas and the extraction of their radiation patterns, in a much more numerically efficient way than previously reported approaches.

The Physical Object | |
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Pagination | 127 leaves. |

Number of Pages | 127 |

ID Numbers | |

Open Library | OL19216866M |

ISBN 10 | 0494072628 |

T. Kokkinos, C.D. Sarris, G.V. Eleftheriades, Periodic finite-difference time-domain analysis of loaded transmission-line negative-refractive-index metamaterials. IEEE Trans. Microwave Theory Tech. 53(4), – () CrossRef Google Scholar. Periodic finite-difference time-domain modeling of leaky-wave structures applied to the analysis of negative-refractive-index metamaterial-based leaky-wave antennas May

The aim of this book is to develop efficient computational algorithms to analyze the scattering properties of various electromagnetic periodic structures using the finite-difference time-domain periodic boundary condition (FDTD/PBC) method. The periodic analysis of candidate plasmonic topologies for the implementation of left-handed media at optical frequencies is pursued through a triangular mesh based finite-difference time-domain (FDTD), equipped with Floquet boundary conditions. The technique is shown to possess excellent convergence and accuracy properties, as opposed to the conventional rectangular cell based FDTD.

Finite-difference time-domain or Yee's method (named after the Chinese American applied mathematician Kane S. Yee, born ) is a numerical analysis technique used for modeling computational electrodynamics (finding approximate solutions to the associated system of differential equations).Since it is a time-domain method, FDTD solutions can cover a wide frequency range with . The accuracy of finite-difference time-domain (FDTD) modelling of left-handed metamaterials (LHMs) is dramatically improved by using an averaging technique along the boundaries of.

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Periodic finite-difference time-domain analysis of loaded transmission-line negative-refractive-index metamaterials Article in IEEE Transactions on Microwave Theory and Techniques 53(4) A finite-difference time-domain method, combined with thin-wire and thin-slot algorithms, which is used to analyse a metamaterial based on periodic mushroom structures, is proposed.

Periodic Finite-Difference Time-Domain Analysis of Loaded Transmission-Line Negative-Refractive-Index Metamaterials Titos Kokkinos, Costas D. Sarris, Member, IEEE, and George V.

Eleftheriades, Senior Member, IEEE Abstract—In this paper, a systematic methodology is proposed for the full-wave time-domain analysis of planar loaded trans. sion properties of the latter [7].

Yet, the time-domain model-ing of metamaterials, via the Finite-Difference Time-Domain (FDTD) method, is motivated by the richness of the transient behavior that it captures.

While it is practically impossible to include the whole volume of NRI time-domain modeling re. An efficient and powerful full-wave electromagnetic technique is presented to characterise and design periodic metamaterial structures. First, the spectral finite-difference time-domain (FDTD) method with periodic boundary conditions and uniaxial perfect matched layer is employed to predict the performance of a mushroom-like artificial magnetic conductor (AMC) surface and further extended to Cited by: An efficient and powerful full-wave electromagnetic technique is presented to characterise and design periodic metamaterial structures.

First, the spectral finite-difference time-domain (FDTD. Scattering Analysis of Periodic Structures Using Finite-Difference Time-Domain M. Abstract.

(EBG) structures, periodic absorbers, meta-materials, and many others. The aim of this book is to develop efficient computational algorithms to analyze the scattering properties of various electromagnetic periodic structures using the finite.

In particular, the time-domain modeling of metamaterials, via the Finite-Difference Time-Domain (FDTD) method, is motivated by the richness of the transient behavior that it captures. Using finite-difference time-domain (FDTD) simulations we investigate the propagation of light pulses in waveguides having a core made of a negative-refractive-index metamaterial.

In order to validate our model we carry out separate simulations for a variety of waveguide core thickness. Periodic structures are common in electromagnetics and photonics, appearing in forms such as metamaterials, elec-tromagnetic band gap materials, phased arrays and photonic crystals.

Dealing with these structures in the context of the Finite-Difference Time-Domain algorithm (FDTD) is usually handled by simulating a single unit cell terminated by.

Scattering Analysis of Periodic Structures Using Finite-Difference Time-Domain Abstract: Periodic structures are of great importance in electromagnetics due to their wide range of applications such as frequency selective surfaces (FSS), electromagnetic band gap (EBG) structures, periodic absorbers, meta-materials, and many others.

Master powerful new modeling tools that let you quantify and represent metamaterial properties with never-before accuracy. This first-of-its-kind book brings you up to speed on breakthrough finite-difference time-domain techniques for modeling metamaterial characteristics and behaviors in electromagnetic systems.

Periodic finite-difference time-domain analysis of loaded transmission-line negative-refractive-index metamaterials. Master powerful new modeling tools that let you quantify and represent metamaterial properties with never-before accuracy. This first-of-its-kind book brings you up to speed on breakthrough finite-difference time-domain techniques for modeling metamaterial characteristics and behaviors in electromagnetic systems.

This practical resource comes complete with sample FDTD scripts to help. In this paper, the periodic analysis of candidate plasmonic topologies for the implementation of left-handed media at optical frequencies is pursued through a triangular-mesh-based finite-difference time-domain (FDTD), equipped with Floquet boundary conditions.

The technique is shown to possess excellent convergence and accuracy properties, as opposed to the conventional rectangular-cell. Efcient Finite-Difference Time-Domain (FDTD) Modeling of Periodic Leaky-Wave Structures the emergence of negative refractive index (NRI) metamaterials has motivated the study of guidance the results of the present periodic analysis are compared to the values of, obtained by simulating.

In this paper, we apply a relativistic finite-difference time-domain (FDTD) method by using the Lorentz transformation to analyze metamaterials moving at a. Li, C.D. Sarris, ``Efficient Finite-Difference Time-Domain Modeling of Driven Periodic Structures and Related Microwave Circuit Applications'', IEEE Transactions on Microwave Theory and Techniques, pp.Aug.

JP An efficient and powerful full-wave electromagnetic technique is presented to characterise and design periodic metamaterial structures. First, the spectral finite-difference time-domain (FDTD) method with periodic boundary conditions and uniaxial perfect matched layer is employed to predict the performance of a mushroom-like artificial magnetic conductor (AMC) surface and further extended to.

Triangular-Mesh FDTD Technique for Modeling Optical Metamaterials with Plasmonic Elements. Analysis of a Sub-Wavelength Plasmonic Photonic Crystal Using the Triangular-Mesh FDTD Technique. Summary and Conclusions.; Computational Optical Imaging Using the Finite-Difference Time-Domain Method -Introduction.

Basic Principles of Optical Coherence. Abstract: In this paper, a novel technique for the efficient modeling of 2D negative-refractive-index (NRI) metamaterial leaky-wave antennas (LWA) is proposed. Specifically, the array factor method is combined with full-wave finite-difference time-domain (FDTD) simulations of a single unit cell of the NRI metamaterial structure in order to calculate the radiation patterns of these LWA.tigate the possibility of transferring the concepts of negative-refractive-index transmission-lines from the microwave to the optical regime (along the lines of [17]), a conformal periodic Finite-Difference Time-Domain analysis of plasmonic nano-particle arrays in a triangular mesh, was presented in [18].

The simulation results based on the finite-difference time-domain method illustrating the process of diffraction cancellation in a soliton lens are shown in fig.

19b. The possibility of delivering optical needle-like beams from one point in space to another may be important for the development of future sub-wavelength all-optical chips.