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Transformation Optics based Antennas

Transformation Optics based Antennas Book
Author : Shah Nawaz Burokur,André de Lustrac,Jianjia Yi,Paul-Henri Tichit
Publisher : Elsevier
Release : 2016-06-25
ISBN : 0081017715
Language : En, Es, Fr & De

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Book Description :

Transformation Optics-based Antennas is organized into two chapters that follow an introduction that presents the basic principles of the transformation optics concept. Two types of transformation are presented, coordinate transformation and space transformation. Implementations using metamaterials are also discussed. Chapter One focuses on coordinate transformation in the design of devices capable of modifying the electromagnetic appearance of a radiating source. Transformation of a directive radiation pattern into an isotropic one (and vice-versa) through space stretching and compression, respectively, and the possibility of creating multiple beams are also studied. Chapter Two deals with devices designed using space transformation concepts. Quasi-conformal transformation optics (QCTO) are applied for the design of lenses, either to compensate for the phase shift created by the conformation of an array of sources or to steer a beam to an off-normal direction. Focuses firstly on the theoretical tools that define transformation optics Address the origin of these concepts by analyzing Fermat’s principle Details the basic approaches and methods needed to design practical applications of transformation optics concepts

High Frequency Microwave and Antenna Devices Based on Transformation Optics and Glide Symmetric Metasurfaces

High Frequency Microwave and Antenna Devices Based on Transformation Optics and Glide Symmetric Metasurfaces Book
Author : Mahsa Ebrahimpouri
Publisher : Unknown
Release : 2019
ISBN : 9789178733767
Language : En, Es, Fr & De

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Book Description :

Download High Frequency Microwave and Antenna Devices Based on Transformation Optics and Glide Symmetric Metasurfaces book written by Mahsa Ebrahimpouri, available in PDF, EPUB, and Kindle, or read full book online anywhere and anytime. Compatible with any devices.

Transformation Electromagnetics and Metamaterials

Transformation Electromagnetics and Metamaterials Book
Author : Douglas H. Werner,Do-Hoon Kwon
Publisher : Springer Science & Business Media
Release : 2013-07-19
ISBN : 1447149963
Language : En, Es, Fr & De

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Book Description :

Transformation electromagnetics is a systematic design technique for optical and electromagnetic devices that enables novel wave-material interaction properties. The associated metamaterials technology for designing and realizing optical and electromagnetic devices can control the behavior of light and electromagnetic waves in ways that have not been conventionally possible. The technique is credited with numerous novel device designs, most notably the invisibility cloaks, perfect lenses and a host of other remarkable devices. Transformation Electromagnetics and Metamaterials: Fundamental Principles and Applications presents a comprehensive treatment of the rapidly growing area of transformation electromagnetics and related metamaterial technology with contributions on the subject provided by a collection of leading experts from around the world. On the theoretical side, the following questions will be addressed: “Where does transformation electromagnetics come from?,” “What are the general material properties for different classes of coordinate transformations?,” “What are the limitations and challenges of device realizations?,” and “What theoretical tools are available to make the coordinate transformation-based designs more amenable to fabrication using currently available techniques?” The comprehensive theoretical treatment will be complemented by device designs and/or realizations in various frequency regimes and applications including acoustic, radio frequency, terahertz, infrared, and the visible spectrum. The applications encompass invisibility cloaks, gradient-index lenses in the microwave and optical regimes, negative-index superlenses for sub-wavelength resolution focusing, flat lenses that produce highly collimated beams from an embedded antenna or optical source, beam concentrators, polarization rotators and splitters, perfect electromagnetic absorbers, and many others. This book will serve as the authoritative reference for students and researchers alike to the fast-evolving and exciting research area of transformation electromagnetics/optics, its application to the design of revolutionary new devices, and their associated metamaterial realizations.

Aperture Antennas for Millimeter and Sub Millimeter Wave Applications

Aperture Antennas for Millimeter and Sub Millimeter Wave Applications Book
Author : Artem Boriskin,Ronan Sauleau
Publisher : Springer
Release : 2017-09-05
ISBN : 3319627732
Language : En, Es, Fr & De

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Book Description :

This book presents the technology of millimetre waves and Terahertz (THz) antennas. It highlights the importance of moderate and high-gain aperture antennas as key devices for establishing point-to-point and point-to-multipoint radio links for far-field and near-field applications, such as high data-rate communications, intelligent transport, security imaging, exploration and surveillance systems. The book provides a comprehensive overview of the key antenna technologies developed for the mm wave and THz domains, including established ones – such as integrated lens antennas, advanced 2D and 3D horn antennas, transmit and reflect arrays, and Fabry-Perot antennas – as well as emerging metasurface antennas for near-field and far-field applications. It describes the pros and cons of each antenna technology in comparison with other available solutions, a discussion supplemented by practical examples illustrating the step-by-step implementation procedures for each antenna type. The measurement techniques available at these frequency ranges are also presented to close the loop of the antenna development cycle. In closing, the book outlines future trends in various antenna technologies, paving the way for further developments. Presenting content originating from the five-year ESF research networking program ‘Newfocus’ and co-authored by the most active and highly cited research groups in the domain of mm- and sub-mm-wave antenna technologies, the book offers a valuable guide for researchers and engineers in both industry and academia.

Metamaterials

Metamaterials Book
Author : Tie Jun Cui,Wen Xuan Tang,Xin Mi Yang,Zhong Lei Mei,Wei Xiang Jiang
Publisher : CRC Press
Release : 2017-12-19
ISBN : 1482223112
Language : En, Es, Fr & De

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Book Description :

Metamaterials: Beyond Crystals, Noncrystals, and Quasicrystals is a comprehensive and updated research monograph that focuses on recent advances in metamaterials based on the effective medium theory in microwave frequencies. Most of these procedures were conducted in the State Key Laboratory of Millimeter Waves, Southeast University, China. The book conveys the essential concept of metamaterials from the microcosmic structure to the macroscopic electromagnetic properties and helps readers quickly obtain needed skills in creating new devices at microwave frequencies using metamaterials. The authors present the latest progress on metamaterials and transformation optics and provide abundant examples of metamaterial-based devices accompanied with detailed procedures to simulate, fabricate, and measure them. Comprised of ten chapters, the book comprehensively covers both the fundamentals and the applications of metamaterials. Along with an introduction to the subject, the first three chapters discuss effective medium theory and artificial particles. The next three chapters cover homogeneous metamaterials (super crystals), random metamaterials (super noncrystals), and inhomogeneous metamaterials (super quasicrystals). The final four chapters examine gradient-index inhomogeneous metamaterials, nearly isotropic inhomogeneous metamaterials, and anisotropic inhomogeneous metamaterials, after which the authors provide their conclusions and closing remarks. The book is completely self-contained, making it easy to follow.

Metamaterials and Wave Control

Metamaterials and Wave Control Book
Author : Eric Lheurette
Publisher : John Wiley & Sons
Release : 2013-12-04
ISBN : 1118761855
Language : En, Es, Fr & De

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Book Description :

Since the concept was first proposed at the end of the 20thCentury, metamaterials have been the subject of much research anddiscussion throughout the wave community. More than 10 years later,the number of related published articles is increasingsignificantly. On the one hand, this success can be attributed to dreams of newphysical objects which are the consequences of the singularproperties of metamaterials. Among them, we can consider theexamples of perfect lensing and invisibility cloaking. On otherhand, metamaterials also provide new tools for the design of well-knownwave functions such as antennas for electromagnetic waves. The goal of this book is to propose an overview of the concept ofmetamaterials as a perspective on a new practical tool for wavestudy and engineering. This includes both the electromagnetic spectrum,from microwave to optics, and the field of acoustic waves. Contents 1. Overview of Microwave and Optical Metamaterial Technologies,Didier Lippens. 2. MetaLines: Transmission Line Approach for the Design ofMetamaterial Devices, Bruno Sauviac. 3. Metamaterials for Non-Radiative Microwave Functions andAntennas, Divitha Seetharamdoo and Bruno Sauviac. 4. Toward New Prospects for Electromagnetic Compatibility, DivithaSeetharamdoo. 5. Dissipative Loss in Resonant Metamaterials, Philippe Tassin,Thomas Koschny, and Costas M. Soukoulis. 6. Transformation Optics and Antennas, André de Lustrac, ShahNawaz Burokur and Paul-Henri Tichit. 7. Metamaterials for Control of Surface Electromagnetic and LiquidWaves, Sébastien Guenneau, Mohamed Farhat, Muamer Kadic,Stefan Enoch and Romain Quidant. 8. Classical Analog of Electromagnetically Induced Transparency,Philippe Tassin, Thomas Koschny and Costas M. Soukoulis.

Photonic Aspects of Modern Radar

Photonic Aspects of Modern Radar Book
Author : Henry Zmuda,Edward N. Toughlian
Publisher : Artech House on Demand
Release : 1994
ISBN : 0987650XXX
Language : En, Es, Fr & De

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Book Description :

Here's all the engineering information needed to integrate the fields of optics and electronics. Assembling a unique blend of expertise from industry, academia, and government, Photonic Aspects of Modern Radar shows the applications of this technology, both in the evolution of today's radar and in future systems.

Metamaterials

Metamaterials Book
Author : Tie Jun Cui,Wen Xuan Tang,Xin Mi Yang,Zhong Lei Mei,Wei Xiang Jiang
Publisher : CRC Press
Release : 2017-12-19
ISBN : 131535618X
Language : En, Es, Fr & De

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Book Description :

Metamaterials: Beyond Crystals, Noncrystals, and Quasicrystals is a comprehensive and updated research monograph that focuses on recent advances in metamaterials based on the effective medium theory in microwave frequencies. Most of these procedures were conducted in the State Key Laboratory of Millimeter Waves, Southeast University, China. The book conveys the essential concept of metamaterials from the microcosmic structure to the macroscopic electromagnetic properties and helps readers quickly obtain needed skills in creating new devices at microwave frequencies using metamaterials. The authors present the latest progress on metamaterials and transformation optics and provide abundant examples of metamaterial-based devices accompanied with detailed procedures to simulate, fabricate, and measure them. Comprised of ten chapters, the book comprehensively covers both the fundamentals and the applications of metamaterials. Along with an introduction to the subject, the first three chapters discuss effective medium theory and artificial particles. The next three chapters cover homogeneous metamaterials (super crystals), random metamaterials (super noncrystals), and inhomogeneous metamaterials (super quasicrystals). The final four chapters examine gradient-index inhomogeneous metamaterials, nearly isotropic inhomogeneous metamaterials, and anisotropic inhomogeneous metamaterials, after which the authors provide their conclusions and closing remarks. The book is completely self-contained, making it easy to follow.

Design and Additive Manufacturing of Broadband Beamforming Lensed Antennas and Load Bearing Conformal Antennas

Design and Additive Manufacturing of Broadband Beamforming Lensed Antennas and Load Bearing Conformal Antennas Book
Author : Soumitra Biswas
Publisher : Unknown
Release : 2019
ISBN : 9781687974778
Language : En, Es, Fr & De

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Book Description :

Graded-Index (GRIN) spherical dielectric lens antennas such as Luneburg lens or Maxwell fish-eye lens are an attractive choice for use as low-cost, wide angle and wideband beamforming and beamscanning elements in a number of military and commercial applications for satellite communication, remote sensing, and radar imaging. When implementing these designs, however, there are many practical challenges involved with the GRIN lens technology. First, the lens's spherical shape complicates the integration of an antenna feed networks such as waveguide, antenna arrays, detectors, and other associated external electronics. Second, practical implementation of such a continuously graded permittivity profile is a challenge and requires a robust fabrication approach to realize graded-index lens structures in a minimum fabrication time with the ability of mass production. To solve the design problem, a modified GRIN lens antenna, where portion of the lens's spherical surface will be modified into a flat surface, can be integrated with the feed networks in a compatible way. However, this approach requires the optimization and redistribution of permittivity profile inside the lens structures to ensure intended beamsteering and electromagnetic performances. In this thesis, I will describe the detail design methodology of quasi-conformal transformation optics (QCTO) based modified GRIN lens structure design. Electromagnetic structures designed with QCTO technique usually suffer from reflection problems at the planar excitation boundary due to the absence of material's magnetic response and result in degraded device performance. In the following work, I will be addressing the reflection problems associated with the QCTO approximations and design a novel anti-reflective layer along with the QCTO-enabled modified GRIN lens antennas to mitigate the impedance mismatch problems across the entire planar excitation surface. To solve the graded dielectrics realization problem, I will be using fused deposition modeling (FDM) based additive manufacturing technique to realize continuously graded dielectric lens antennas. In addition, I will demonstrate the use of additive manufacturing to embed the antenna elements within a curved surface load-bearing structure.

IEICE Transactions on Electronics

IEICE Transactions on Electronics Book
Author : Anonim
Publisher : Unknown
Release : 2007
ISBN : 0987650XXX
Language : En, Es, Fr & De

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Book Description :

Download IEICE Transactions on Electronics book written by , available in PDF, EPUB, and Kindle, or read full book online anywhere and anytime. Compatible with any devices.

Metamaterials

Metamaterials Book
Author : Tie Jun Cui,David Smith,Ruopeng Liu
Publisher : Springer Science & Business Media
Release : 2009-10-30
ISBN : 9781441905734
Language : En, Es, Fr & De

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Book Description :

Metamaterials:Theory, Design, and Applications goes beyond left-handed materials (LHM) or negative index materials (NIM) and focuses on recent research activity. Included here is an introduction to optical transformation theory, revealing invisible cloaks, EM concentrators, beam splitters, and new-type antennas, a presentation of general theory on artificial metamaterials composed of periodic structures, coverage of a new rapid design method for inhomogeneous metamaterials, which makes it easier to design a cloak, and new developments including but not limited to experimental verification of invisible cloaks, FDTD simulations of invisible cloaks, the microwave and RF applications of metamaterials, sub-wavelength imaging using anisotropic metamaterials, dynamical metamaterial systems, photonic metamaterials, and magnetic plasmon effects of metamaterials.

Metamaterials

Metamaterials Book
Author : Source Wikipedia
Publisher : University-Press.org
Release : 2013-09
ISBN : 9781230540627
Language : En, Es, Fr & De

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Book Description :

Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. Pages: 96. Chapters: Dielectric, Superlens, Metamaterial antennas, Terahertz metamaterials, Metamaterial cloaking, Photonic metamaterials, Negative index metamaterials, Acoustic metamaterials, History of metamaterials, Tunable metamaterials, Split-ring resonator, Transformation optics, Photonic crystal, Theories of cloaking, Nonlinear metamaterials, Chirality, Richard W. Ziolkowski, Victor Veselago, Evanescent wave, Plasmonic metamaterials, Seismic metamaterials, Metamaterials: Physics and Engineering Explorations, Winston E. Kock, Bloch wave - MoM method, Surface plasmon polaritons, Artificial dielectrics, Negative refraction, Metamaterials Handbook, Metamaterial absorber, Acoustic dispersion.

Efficient Optimization of Antenna and Electromagnetic Devices at Medium Radio and Optical Frequencies

Efficient Optimization of Antenna and Electromagnetic Devices at Medium  Radio  and Optical Frequencies Book
Author : Donovan Brocker
Publisher : Unknown
Release : 2016
ISBN : 0987650XXX
Language : En, Es, Fr & De

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Book Description :

The fast growth of computer technology has led to aggressive advancement in engineering design, where in the past, analytical methods and/or intuitive trial and error through experiments were the most lucrative tools. Specifically in electromagnetics, powerful computers can be used to run simulation models subject to numerical solutions of Maxwells equations, providing extremely accurate predictions of the device performance. Growing computer resources also offer the ability to optimize devices via simulation, facilitating fine-tuning before fabrication. Hence, engineering design has drifted more and more towards computer modeling and optimization and has, in some cases, drifted away from intuition-based design and experimental fine-tuning. Although the former approach has the tendency to lower research and development costs and, at times, predict novel devices, the latter is still essential to the overall advancement of engineering design. With this in mind, this dissertation summarizes multiple efforts, ranging across many sub-fields of electromagnetics, where computer modeling and optimization was strongly coupled to intuitive design. This approach leads to efficient optimization of high performance designs that would likely not be possible with analytical or brute-force computer optimization alone. First, a hybrid approach combining transmission line equations and full-wave models is developed to optimize large communication networks in coal mines for emergency response applications. Secondly, a miniaturized dual-band antenna with an interdigitated slot load is proposed based on transmission line models and fine-tuned using computer simulation models. The antenna was fabricated and characterized, showing excellent agreement with simulation predictions. Next, an ultra-thin electromagnetic absorber design is proposed based on an equivalent circuit model. In particular, the circuit model is used to optimize the absorber design for wide bandwidth. Subsequently, the circuit model is used to simplify the optimization routine by cascading the scattering properties of the different absorber regions. Finally, gradient-index lens design methodology is developed based on transformation optics, enabling superior mono- and polychromatic lens performances.

EMPLOYING DIELECTRIC BASED MEDIA FOR CONTROLLING FIELD PATTERNS AND WAVE PROPAGATION IN ADVANCED ELECTROMAGNETIC DEVICES

EMPLOYING DIELECTRIC BASED MEDIA FOR CONTROLLING FIELD PATTERNS AND WAVE PROPAGATION IN ADVANCED ELECTROMAGNETIC DEVICES Book
Author : Anonim
Publisher : Unknown
Release : 2018
ISBN : 0987650XXX
Language : En, Es, Fr & De

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Book Description :

Abstract : Rapid progress in developing electromagnetic devices and in governing the wave propagation during last years caused renewed interest to dielectric materials. First, engineered dielectric structures with spatial dispersion of their parameters came to replace uniform substrates in antennas and other resonance devices. Then additional boom of dielectric applications was caused by the possibility to employ dielectrics as materials of artificial media. Later, attention of researchers was attracted to properties of the media composed of dielectric resonators (DRs). Currently DRs are used to create metamaterials - the media with unprecedented properties, which cannot be found in nature. Dielectric photonic crystals and metamaterials are considered as the most perspective materials for photonics, since they can be integrated in devices without loss problems, which characterize, for example, plasmonic techniques. Recently, a booming interest emerged to employing in photonics directional light scattering from dielectric particles, since the wavelengths of this light could be controlled by dimensions of particles and their dielectric permittivity. Our work followed basic innovations, which defined contemporary employment of dielectrics in electromagnetics and photonics. In particular, we started from working out new engineering approaches to developing dielectric substrates in patch structures inspired by microstrip patch antennas, which are proposed to serve as MRI RF probes (Chapter 2). Then we redirected our attention to the problems, which restricted employment of dielectrics in left-handed media. In particular, we have shown that negative refraction in all-dielectric metamaterials is irrelevant to Mie resonances in dielectric elements (Chapter 3). Next, we turned to analysis of problems defining directional scattering from dielectric metasurfaces and have demonstrated that the nature of observed phenomena cannot be correctly understood without accounting for strong interaction between "atoms" of metasurafces (Chapter 4). Finally we discussed selected problems met at implementation of photonic crystals in the media of transformation optics based devices and have shown that some of the problems can be solved at employing the phenomenon of self-collimation, characteristic for periodic photonic structures (Chapter 5).

A Switchable Magnetic Low index Metamaterial for Use in a Dynamically Reconfigurable Beam scanning Lens Antenna with a Single Feed

A Switchable Magnetic Low index Metamaterial for Use in a Dynamically Reconfigurable Beam scanning Lens Antenna with a Single Feed Book
Author : Jeremiah Turpin
Publisher : Unknown
Release : 2014
ISBN : 0987650XXX
Language : En, Es, Fr & De

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Book Description :

Metamaterials and Transformation Optics (TO) have been used to design and implement many novel electromagnetic devices that can achieve effects not possible using conventional materials. Compact high-gain antennas are one of the more popular and successful emerging applications for the new TO and metamaterial design approaches. This dissertation details an extension of uniaxial near-zero index metamaterial lenses through the incorporation of a tunable or reconfigurable metamaterial as a replacement for the static metamaterial of the original antenna. A design is presented for a beam-scanning TO lens that allows an arbitrary number of beams at controlled magnitudes to be dynamically synthesized from a single omnidirectional source, unlike the equivalent antenna constructed using an array. A cylindrical slab of zero-index magnetic metamaterial controls the radiation pattern by altering the effective shape of the lens through switching of selected regions 'off' to emulate free-space conditions. A design for a switchable metamaterial is presented that allows for digital control over its bulk properties, from near-zero-index to near-free-space at the targeted operational frequency. Extensive modeling and simulations were performed for the design of the lens and metamaterial and during the analysis of measurement results. Initial prototypes of the tunable metamaterial were fabricated and characterized to confirm the original measurements, and the design updated to incorporate the measured data. These measurements were performed using custom test fixtures manufactured specifically for this project. Finally, a simplified prototype lens was manufactured and characterized in an anechoic as a proof-of-concept for the design. This dissertation presents the lens and metamaterial specifications, as well as the design process and considerations that were determined for practical tunable and reconfigurable metamaterials. Although the focus is on the particular example of the beam-scanning reconfigurable antenna, the analysis and modeling methods presented here are applicable to any reconfigurable metamaterial application.

Analysis and Design of Microwave Communication Antennas Based on Periodic Structures

Analysis and Design of Microwave Communication Antennas Based on Periodic Structures Book
Author : Ravi Arya
Publisher : Unknown
Release : 2017
ISBN : 0987650XXX
Language : En, Es, Fr & De

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Book Description :

Presently, there is considerable interest in the world of Metamaterial (MTM) andFrequency Selective Surfaces (FSSs) in constructing and using crystals with 3Delements. These elements provide the flexibility in controlling the performancecharacteristics in regards to frequency bandwidth, polarization sensitivity andangular range. Frequency selective surfaces (FSSs) are periodic structures witha bandpass or a bandstop frequency response dependent upon the geometricalparameters of its elements. Periodic structures are typically modeled as infinitearrays of scatterers, and are commonly analyzed by imposing periodic boundaryconditions to a unit cell to reduce the original problem to a manageable size.Analysis of only a single unit cell reduces the computational burden. However,this benefit is marred if the illuminating plane wave has a large incident angle.Large incident angles in numerical simulations require lowering of the step size,which in turn might lead to instability. Even though several Finite-DifferenceTime-Domain (FDTD)/ Periodic Boundary Condition (PBC) methods are capableof handling the large angle condition in different ways, solving the unit cell remainsa computationally intensive problem. The conventional Method of Moments (MoM)approach provides an efficient means to simulating FSSs though given the caveatthat the periodic elements are PEC and not inhomogeneous, complex objects, whichare more amenable to convenient analysis through the use of Finite Methods (FM).This dissertation starts by presenting a novel approach that is numericallyefficient and accurate for the analysis of threedimensional arbitrarily shapedperiodic structures with arbitrary incidence angles. This technique does not sufferfrom the stability issues encountered in the FDTD/PBC algorithm, which canbecome unstable and computationally intensive with wide angles of incidence.Next, the design of the flat lenses is explored using modified commercial off-the-shelf (COTS) materials, as opposed to metamaterials (MTMs) that are oftenrequired in lens designs based on the Transformation Optics (TO) approach. Whilelens designs based on Ray Optics (RO) do not suffer from the drawback of havingto use metamaterials, they still require dielectric materials that may not be commerciallyavailable off-the-shelf. A systematic procedure for realizing the desired materials is demonstrated by modifying the COTS types of materials, and illustrates its application with some practical examples. This dissertation investigates the use of 3Dprinting for such examples and illustrates its benefits by combining it with the proposed method.Normally, the FSS structure is numerically simulated during the design processand then fabricated to verify if indeed it has the predicted characteristics. It is notunusual to find that there is considerable discrepancy between the simulated andmeasured results, even when there is only a minor difference between the designedand fabricated structures. This is especially true for Metamaterials used at opticalwavelengths, where the difficulties in fabrication almost always introduce smallvariations in the dimensions of the elements that comprise the periodic array.This dissertation explores the resulting effect to the performance of the presence ofthis type of variation in the unit cell parameters by using the Polynomial Chaosmethod instead of the traditional Monte Carlo method, which can be extremelyexpensive in terms of computational resources.Finally, two designs of offsetfed dielectric reflectarray are presented. Bothreflectarrays feature broadband designs realized by using dielectric blocks backedby a PEC plane. One of these arrays uses a phase compensating flat lens to reducethe maximum permittivity of the dielectric blocks covering the PEC plane. Wecompare the performances of both reflectarrays and list their benefits as comparedto traditional reflectarrays that use resonant elements for their designs, whichrender them narrowband.

International Aerospace Abstracts

International Aerospace Abstracts Book
Author : Anonim
Publisher : Unknown
Release : 1999
ISBN : 0987650XXX
Language : En, Es, Fr & De

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Book Description :

Download International Aerospace Abstracts book written by , available in PDF, EPUB, and Kindle, or read full book online anywhere and anytime. Compatible with any devices.

Transformation Wave Physics

Transformation Wave Physics Book
Author : Mohamed Farhat,Pai-Yen Chen,Sebastien Guenneau,Stefan Enoch
Publisher : CRC Press
Release : 2016-11-18
ISBN : 1315341085
Language : En, Es, Fr & De

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Book Description :

Space–time transformations as a design tool for a new class of composite materials (metamaterials) have proved successful recently. The concept is based on the fact that metamaterials can mimic a transformed but empty space. Light rays follow trajectories according to Fermat’s principle in this transformed electromagnetic, acoustic, or elastic space instead of laboratory space. This allows one to manipulate wave behaviors with various exotic characteristics such as (but not limited to) invisibility cloaks. This book is a collection of works by leading international experts in the fields of electromagnetics, plasmonics, elastodynamics, and diffusion waves. The experimental and theoretical contributions will revolutionize ways to control the propagation of sound, light, and other waves in macroscopic and microscopic scales. The potential applications range from underwater camouflaging and electromagnetic invisibility to enhanced biosensors and protection from harmful physical waves (e.g., tsunamis and earthquakes). This is the first book that deals with transformation physics for all kinds of waves in one volume, covering the newest results from emerging topical subjects such as transformational plasmonics and thermodynamics.

Government Reports Announcements Index

Government Reports Announcements   Index Book
Author : Anonim
Publisher : Unknown
Release : 1995
ISBN : 0987650XXX
Language : En, Es, Fr & De

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Book Description :

Download Government Reports Announcements Index book written by , available in PDF, EPUB, and Kindle, or read full book online anywhere and anytime. Compatible with any devices.