Metamaterials with Negative Parameters

Metamaterials with Negative Parameters

Devoted mainly to metamaterials that can be characterized by a negative effective permittivity and/or permeability, the book includes a wide overview of the most important topics, scientific fundamentals, and technical applications of ...

Author: Ricardo Marqués

Publisher: John Wiley & Sons

ISBN: 9781118211564

Category: Technology & Engineering

Page: 315

View: 862

The first general textbook to offer a complete overview ofmetamaterial theory and its microwave applications Metamaterials with Negative Parameters represents theonly unified treatment of metamaterials available in one convenientbook. Devoted mainly to metamaterials that can be characterized bya negative effective permittivity and/or permeability, the bookincludes a wide overview of the most important topics, scientificfundamentals, and technical applications of metamaterials. Chapter coverage includes: the electrodynamics of left-handedmedia, synthesis of bulk metamaterials, synthesis of metamaterialsin planar technology, microwave applications of metamaterialconcepts, and advanced and related topics, including SRR- andCSRR-based admittance surfaces, magneto- and electro-inductivewaves, and sub-diffraction imaging devices. A list of problems andreferences is included at the end of each chapter, and abibliography offers a complete, up-to-daterepresentation of thecurrent state of the art in metamaterials. Geared toward students and professionals alike, Metamaterialswith Negative Parameters is an ideal textbook for postgraduatecourses and also serves as a valuable introductory reference forscientists and RF/microwave engineers.
Categories: Technology & Engineering

Metamaterials with Negative Parameters

Metamaterials with Negative Parameters

Devoted mainly to metamaterials that can be characterized by a negative effective permittivity and/or permeability, the book includes a wide overview of the most important topics, scientific fundamentals, and technical applications of ...

Author: Ricardo Marqués

Publisher: John Wiley & Sons

ISBN: 0470191724

Category: Technology & Engineering

Page: 264

View: 224

The first general textbook to offer a complete overview of metamaterial theory and its microwave applications Metamaterials with Negative Parameters represents the only unified treatment of metamaterials available in one convenient book. Devoted mainly to metamaterials that can be characterized by a negative effective permittivity and/or permeability, the book includes a wide overview of the most important topics, scientific fundamentals, and technical applications of metamaterials. Chapter coverage includes: the electrodynamics of left-handed media, synthesis of bulk metamaterials, synthesis of metamaterials in planar technology, microwave applications of metamaterial concepts, and advanced and related topics, including SRR- and CSRR-based admittance surfaces, magneto- and electro-inductive waves, and sub-diffraction imaging devices. A list of problems and references is included at the end of each chapter, and a bibliography offers a complete, up-to-daterepresentation of the current state of the art in metamaterials. Geared toward students and professionals alike, Metamaterials with Negative Parameters is an ideal textbook for postgraduate courses and also serves as a valuable introductory reference for scientists and RF/microwave engineers.
Categories: Technology & Engineering

Mechanics of Metamaterials with Negative Parameters

Mechanics of Metamaterials with Negative Parameters

This book discusses bulk solids that derive their mechanical properties not from those of their base materials, but from their designed microstructures.

Author: Teik-Cheng Lim

Publisher: Springer Nature

ISBN: 9789811564468

Category:

Page:

View: 940

Categories:

Physics and Applications of Negative Refractive Index Materials

Physics and Applications of Negative Refractive Index Materials

Surveying this explosive growth, Physics and Applications of Negative Refractive Index Materials covers the fundamental physical principles and emerging engin

Author: S. Anantha Ramakrishna

Publisher: CRC Press

ISBN: 9781420068764

Category: Science

Page: 416

View: 821

Ever since the first experimental demonstration was reported in 2000, the interest in metamaterials and left-handed media that exhibit a negative refractive index has increased exponentially. Surveying this explosive growth, Physics and Applications of Negative Refractive Index Materials covers the fundamental physical principles and emerging engineering applications of structured electromagnetic metamaterials that yield a negative refraction as well as other unexpected physical properties. It provides detailed explanations on the history, development, and main achievements of metamaterials. Making it easy to access relevant, up-to-date information on the field, the authors bring together the most important and influential papers related to metamaterials. They present the principles of negative refraction and compare the uniqueness of novel metamaterials with other media that exhibit similar properties. The book discusses the design, optimization, and testing of structured metamaterials as well as applications of metamaterials at frequencies ranging from radio wave to optical. It also explores novel concepts and phenomena, such as the perfect lens for super-resolution imaging, hyper lenses that couple the near-field to radiative modes, electromagnetic cloaking and invisibility, and near-field optical imaging. Connecting theoretical ideas to recent experimental techniques and results, this state-of-the-art book enables an understanding of the basic principles of and research contributions to metamaterials with negative refractive index and their electromagnetic properties.
Categories: Science

Theory and Phenomena of Metamaterials

Theory and Phenomena of Metamaterials

A volume in the Metamaterials Handbook, this book provides a comprehensive guide to working with metamaterials using topics presented in a concise review format along with numerous references.

Author: Filippo Capolino

Publisher: CRC Press

ISBN: 1420054260

Category: Technology & Engineering

Page: 974

View: 510

Theory and Phenomena of Metamaterials offers an in-depth look at the theoretical background and basic properties of electromagnetic artificial materials, often called metamaterials. A volume in the Metamaterials Handbook, this book provides a comprehensive guide to working with metamaterials using topics presented in a concise review format along with numerous references. With contributions from leading researchers, this text covers all areas where artificial materials have been developed. Each chapter in the text features a concluding summary as well as various cross references to address a wide range of disciplines in a single volume.
Categories: Technology & Engineering

Fields Networks Computational Methods and Systems in Modern Electrodynamics

Fields  Networks  Computational Methods  and Systems in Modern Electrodynamics

On this occasion on June 1St and 2nd 2004 at the Technische Universitat Miinchen a symposium on "Fields, Networks, Computational Methods, and Systems: A Modern View of Engineering Electrodynamics" in honor of Leopold B. Felsen was organized ...

Author: Peter Russer

Publisher: Springer Science & Business Media

ISBN: 9783662072219

Category: Science

Page: 280

View: 172

On June 1St 2004 the Faculty of Electrical Engineering and Information Technology of the Technische Universitat Miinchen bestowed the degree of the doctor honoris causa to Leopold B. Felsen, for extraordinary achievements in the theory of electromag netic fields. On this occasion on June 1St and 2nd 2004 at the Technische Universitat Miinchen a symposium on "Fields, Networks, Computational Methods, and Systems: A Modern View of Engineering Electrodynamics" in honor of Leopold B. Felsen was organized. The symposium topic focused on an important area of Leopold Felsen research interests and, as the title emphasizes, on a modern view of applied Electro dynamics. While the fundamental physical laws of electrodynamics are well known, research in this field is experiencing a steady continuous growth. The problem -solving approaches of, say, twenty years ago may seem now fairly obsolete since considerable progress has been made in the meantime. In this monograph we collect samples of present day state of the art in dealing with electromagnetic fields, their network theory representation, their computation and, finally, on system applications. The network formulation of field problems can improve the problem formulation and also contribute to the solution methodology. Network theory systematic approaches for circuit analysis are based on the separation of the circuit into the connection circuit and the circuit elements. Many applications in science and technology rely on computations of the electromagnetic field in either man-made or natural complex structures.
Categories: Science

Negative Refraction Metamaterials

Negative Refraction Metamaterials

Next, a broad spectrum of exciting new research and emerging applications is examined, including: * Theory and experiments behind a super-resolving, negative-refractive-index transmission-line lens * 3-D transmission-line metamaterials with ...

Author: G. V. Eleftheriades

Publisher: John Wiley & Sons

ISBN: 9780471744740

Category: Science

Page: 316

View: 820

Learn about the revolutionary new technology of negative-refractionmetamaterials Negative-Refraction Metamaterials: Fundamental Principles andApplications introduces artificial materials that support theunusual electromagnetic property of negative refraction. Readerswill discover several classes of negative-refraction materialsalong with their exciting, groundbreaking applications, such aslenses and antennas, imaging with super-resolution, microwavedevices, dispersion-compensating interconnects, radar, anddefense. The book begins with a chapter describing the fundamentals ofisotropic metamaterials in which a negative index of refraction isdefined. In the following chapters, the text builds on thefundamentals by describing a range of useful microwave devices andantennas. Next, a broad spectrum of exciting new research andemerging applications is examined, including: * Theory and experiments behind a super-resolving,negative-refractive-index transmission-line lens * 3-D transmission-line metamaterials with a negative refractiveindex * Numerical simulation studies of negative refraction of Gaussianbeams and associated focusing phenomena * Unique advantages and theory of shaped lenses made ofnegative-refractive-index metamaterials * A new type of transmission-line metamaterial that is anisotropicand supports the formation of sharp steerable beams (resonancecones) * Implementations of negative-refraction metamaterials at opticalfrequencies * Unusual propagation phenomena in metallic waveguides partiallyfilled with negative-refractive-index metamaterials * Metamaterials in which the refractive index and the underlyinggroup velocity are both negative This work brings together the best minds in this cutting-edgefield. It is fascinating reading for scientists, engineers, andgraduate-level students in physics, chemistry, materials science,photonics, and electrical engineering.
Categories: Science

Metamaterials

Metamaterials

This book stands alone as a must-read for any engineer or researcher working with metamaterials.

Author: Tie Jun Cui

Publisher: Springer Science & Business Media

ISBN: 1441905731

Category: Technology & Engineering

Page: 367

View: 205

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.
Categories: Technology & Engineering

Metamaterials

Metamaterials

With full-color illustrations throughout to clarify concepts and help visualize actual results, this book provides a dynamic, user-friendly resource for students, engineers, physicists, and other researchers in the areas of electromagnetic ...

Author: Nader Engheta

Publisher: John Wiley & Sons

ISBN: 9780471784180

Category: Technology & Engineering

Page: 352

View: 612

Leading experts explore the exotic properties and excitingapplications of electromagnetic metamaterials Metamaterials: Physics and Engineering Explorations givesreaders a clearly written, richly illustrated introduction to themost recent research developments in the area of electromagneticmetamaterials. It explores the fundamental physics, the designs,and the engineering aspects, and points to a myriad of excitingpotential applications. The editors, acknowledged leaders in thefield of metamaterials, have invited a group of leading researchersto present both their own findings and the full array ofstate-of-the-art applications for antennas, waveguides, devices,and components. Following a brief overview of the history of artificialmaterials, the publication divides its coverage into two majorclasses of metamaterials. The first half of the publicationexamines effective media with single (SNG) and double negative(DNG) properties; the second half examines electromagnetic band gap(EBG) structures. The book further divides each of these classesinto their three-dimensional (3D volumetric) and two-dimensional(2D planar or surface) realizations. Examples of each type ofmetamaterial are presented, and their known and anticipatedproperties are reviewed. Collectively, Metamaterials: Physics and EngineeringExplorations presents a review of recent research advancesassociated with a highly diverse set of electromagneticmetamaterials. Its multifaceted approach offers readers acombination of theoretical, numerical, and experimentalperspectives for a better understanding of their behaviors andtheir potentialapplications in components, devices, and systems.Extensive reference lists provide opportunities to exploreindividual topics and classes of metamaterials in greaterdepth. With full-color illustrations throughout to clarify concepts andhelp visualize actual results, this book provides a dynamic,user-friendly resource for students, engineers, physicists, andother researchers in the areas of electromagnetic materials,microwaves, millimeter waves, and optics. It equips newcomers witha basic understanding of metamaterials and their potentialapplications. Advanced researchers will benefit fromthought-provoking perspectives that will deepen their knowledge andlead them to new areas of investigation.
Categories: Technology & Engineering

Fiber Optic Communication Systems

Fiber Optic Communication Systems

... AND PRACTICE OF INFRARED TECHNOLOGY FOR NONDESTRUCTIVE
TESTING e Xavier P. V. Maldague METAMATERIALS WITH NEGATIVE
PARAMETERS: THEORY, DESIGN, AND MICROWAVE APPLICATIONS •
Ricardo Marqués, ...

Author: Govind P. Agrawal

Publisher: John Wiley & Sons

ISBN: 9780470922828

Category: Science

Page: 626

View: 200

This book provides a comprehensive account of fiber-optic communication systems. The 3rd edition of this book is used worldwide as a textbook in many universities. This 4th edition incorporates recent advances that have occurred, in particular two new chapters. One deals with the advanced modulation formats (such as DPSK, QPSK, and QAM) that are increasingly being used for improving spectral efficiency of WDM lightwave systems. The second chapter focuses on new techniques such as all-optical regeneration that are under development and likely to be used in future communication systems. All other chapters are updated, as well.
Categories: Science

Solar Cells and Their Applications

Solar Cells and Their Applications

Zhao THEORY AND PRACTICEOF INFRARED TECHNOLOGY FOR
NONDESTRUCTIVE TESTING ∙ Xavier P. V. Maldague METAMATERIALS
WITH NEGATIVE PARAMETERS: THEORY, DESIGN, AND MICROWAVE
APPLICATIONS ...

Author: Lewis M. Fraas

Publisher: John Wiley & Sons

ISBN: 1118024052

Category: Technology & Engineering

Page: 627

View: 404

A major update of solar cell technology and the solar marketplace Since the first publication of this important volume over a decade ago, dramatic changes have taken place with the solar market growing almost 100-fold and the U.S. moving from first to fourth place in the world market as analyzed in this Second Edition. Three bold new opportunities are identified for any countries wanting to improve market position. The first is combining pin solar cells with 3X concentration to achieve economic competitiveness near term. The second is charging battery-powered cars with solar cell–generated electricity from arrays in surrounding areas—including the car owners' homes—while simultaneously reducing their home electricity bills by over ninety percent. The third is formation of economic "unions" of sufficient combined economic size to be major competitors. In this updated edition, feed-in tariffs are identified as the most effective approach for public policy. Reasons are provided to explain why pin solar cells outperform more traditional pn solar cells. Field test data are reported for nineteen percent pin solar cells and for ~500X concentrating systems with bare cell efficiencies approaching forty percent. Paths to bare cell efficiencies over fifty percent are described, and key missing program elements are identified. Since government support is needed for new technology prototype integration and qualification testing before manufacturing scale up, the key economic measure is identified in this volume as the electricity cost in cents per kilowatt-hour at the complete installed system level, rather than just the up-front solar cell modules' costs in dollars per watt. This Second Edition will benefit technologists in the fields of solar cells and systems; solar cell researchers; power systems designers; academics studying microelectronics, semiconductors, and solar cells; business students and investors with a technical focus; and government and political officials developing public policy.
Categories: Technology & Engineering

Selected Topics in Photonic Crystals and Metamaterials

Selected Topics in Photonic Crystals and Metamaterials

CHAPTER 14 SLOW LIGHT IN NEGATIVE PERMEABILITY METAMATERIAL
WAVEGUIDES Salvatore Savo1,2, Wentao T. ... relies on numerical simulations
of the electromagnetic properties of SRRs which provide the scattering
parameters.

Author: Antonello Andreone

Publisher: World Scientific

ISBN: 9789814355193

Category: Electronic books

Page: 548

View: 820

This volume focuses on a research field that has emerged in the last decade as one of the most promising and rapidly advancing. The interest towards photonic crystals and metamaterials and their strategic importance are evident in the steadily growing rate of topical publications, the recent creation of topical journals, conferences and workshops promoted by several scientific societies, the research efforts at international level, and the number of proposed novel applications based on them. The various contributions, by renowned scientists from academia and industry, address wide-ranging topics, including aspects pertaining to modeling, phenomenologies, experiments, technologies and applications.
Categories: Electronic books

Optical Metamaterials by Block Copolymer Self Assembly

Optical Metamaterials by Block Copolymer Self Assembly

Nat Photonics 5:523–530 Pendry JB (2004) A chiral route to negative refraction.
Science (New York, N.Y.) 306(5700):1353–1355 Zhao R, Koschny T, Soukoulis
CM (2010) Chiral metamaterials: retrieval of the effective parameters with and ...

Author: Stefano Salvatore

Publisher: Springer

ISBN: 9783319053325

Category: Science

Page: 83

View: 740

Metamaterials are artificially designed materials engineered to acquire their properties by their specific structure rather than their composition. They are considered a major scientific breakthrough and have attracted enormous attention over the past decade. The major challenge in obtaining an optical metamaterial active at visible frequencies is the fabrication of complex continuous metallic structures with nano metric features. This thesis presents the fabrication and characterization of optical metamaterials made by block copolymer self assembly. This approach allows fabrication of an intriguing and complex continuous 3D architecture called a gyroid, which is replicated into active plasmonic materials such as gold. The optical properties endowed by this particular gyroid geometry include reduction of plasma frequency, extraordinarily enhanced optical transmission, and a predicted negative refractive index. To date, this is the 3D optical metamaterial with the smallest features ever made.
Categories: Science

Metamaterials

Metamaterials

Unsupported science has appeared in force in recent years in the area of
negative parameter materials: for example, “perfect lenses” that cannot produce a
usable modulation transfer function and may not even satisfy the standard lens ...

Author: Benedikt A. Munk

Publisher: John Wiley & Sons

ISBN: 0470423862

Category: Science

Page: 220

View: 875

A Convincing and Controversial Alternative Explanation of Metamaterials with a Negative Index of Refraction In a book that will generate both support and controversy, one of the world's foremost authorities on periodic structures addresses several of the current fashions in antenna design—most specifically, the popular subject of double negative metamaterials. Professor Munk provides a comprehensive theoretical electromagnetic investigation of the issues and concludes that many of the phenomena claimed by researchers may be impossible. While denying the existence of negative refraction, the author provides convincing alternative explanations for some of the experimental examples in the literature. Although the debate on this subject is just beginning, Professor Munk has received support by various numerical simulations, winning him the encouragement of numerous experts in the field. The issues that are raised here have not been addressed thoroughly by the metamaterials community, and this book will serve as a catalyst for much healthy debate and discussion. Metamaterials: Critique and Alternatives is destined to become a classic resource for graduate students and researchers in electromagnetics, antenna theory, materials research, and chemistry.
Categories: Science

Phenomena of Optical Metamaterials

Phenomena of Optical Metamaterials

The optical response of the double fishnet combines the negative effective
permittivity of the wire mesh and the negative resonant permeability of the paired
nanorods and leads to a structure with both effective parameters and the
refractive ...

Author: Ortwin Hess

Publisher: Elsevier

ISBN: 9780128138977

Category: Science

Page: 277

View: 812

Phenomena of Optical Metamaterials provides an overview of phenomena enabled by artificial and designed metamaterials and their application for photonic devices. The book explores the study of active metamaterials with tunable and switchable properties and novel functionalities, such as the control of spontaneous emission and enhancement. Topics addressed cover theory, modelling and design, applications in practical devices, fabrication, characterization, and measurement, thus helping readers understand and develop new artificial, functional materials. Addresses disorder in metamaterials from the perspective of different viewpoints Introduces basic metamaterial modelling approaches and phenomena enabled by metamaterials Discusses the latest advances in metamaterials, including hyperbolic metamaterials, disorder in metamaterials, active metamaterials, quantum and atomic metamaterials
Categories: Science

Waves in Metamaterials

Waves in Metamaterials

The elements that were proved useful for showing the existence of negative
material parameters and negative refraction (Smith et al., 2000; Shelby et al.,
2001a) were metallic rods and split-ring resonators. The combination was new. It
is true ...

Author: Laszlo Solymar

Publisher: Oxford University Press

ISBN: 9780199215331

Category: Computers

Page: 385

View: 756

Metamaterials is a young subject born in the 21st century. It is concerned with artificial materials which can have electrical and magnetic properties difficult or impossible to find in nature. The building blocks in most cases are resonant elements much smaller than the wavelength of the electromagnetic wave. The book offers a comprehensive treatment of all aspects of research in this field at a level that should appeal to final year undergraduates in physics or in electrical and electronic engineering. The mathematics is kept at a minimum; the aim is to explain the physics in simple terms and enumerate the major advances. It can be profitably read by graduate and post-graduate students in order to find out what has been done in the field outside their speciality, and by experts who may gain new insight about the inter-relationship of the physical phenomena involved.
Categories: Computers

Tutorials in Metamaterials

Tutorials in Metamaterials

From science fiction to science laboratoriesDiscover the State of the Art in Photonic MetamaterialsMetamaterials-composite media with unusual optical properties-have revolutionized the landscape of optical science and engineering over the ...

Author: Mikhail A. Noginov

Publisher: CRC Press

ISBN: 9781420092196

Category: Technology & Engineering

Page: 308

View: 739

From science fiction to science laboratories Discover the State of the Art in Photonic Metamaterials Metamaterials—composite media with unusual optical properties—have revolutionized the landscape of optical science and engineering over the past decades. Metamaterials have transformed science-fiction-like concepts of superresolution imaging and optical cloaking to the realm of science laboratories, and further promise to transform these into the realm of our everyday life. This new era of optical metamaterials calls for the development of experimental and theoretical methods capable of analyzing optical behavior on the multitude of scales—from the nanometer scale of individual inhomogeneity, to the micrometer level and the larger scale of metamaterials-based devices. Tutorials in Metamaterials offers a collection of chapters that were designed as self-contained tutorials describing photonic metamaterials and the state of the art in metamaterials research. Chapters cover: Linear and nonlinear properties of photonic metamaterials and their potential applications Fabrication techniques for optical metamaterials, ranging from electron-beam lithography, focused ion beam milling, and nanoimprint lithography to direct laser writing Recent achievements in metatamerial research at visible, IR, and microwave frequencies Novel applications of metamaterials for light guiding, steering, and refraction Efforts to compensate and eliminate optical loss by introducing optical gain into the metamaterial matrix A comprehensive overview of metamaterial photonics, this reference is suitable for graduate students as well as physicists and engineers interested in entering this dynamic new field.
Categories: Technology & Engineering

Investigation of Negative Refractive Index in Isotropic Chiral Metamaterials Under First and Second order Material Dispersion with and Without Conductive Loss

Investigation of Negative Refractive Index in Isotropic Chiral Metamaterials Under First and Second order Material Dispersion with and Without Conductive Loss

The motivation of this work has two parts- the first part is to determine if using second- as opposed to first-order material dispersion may lead to more practically realizable negative index behavior in the lossless material; the second ...

Author: Tarig Abobaker Algadey

Publisher:

ISBN: OCLC:952414387

Category: Electromagnetic waves

Page: 79

View: 305

In recent years, considerable research has been carried out relative to the electromagnetic (EM) propagation and refraction characteristics in metamaterials with emphasis on the origins of negative refractive index. Negative refractive index may be introduced in metamaterials via different methods; one such is the condition whereby the Poynting vector of the EM wave is in opposition to the group velocity in the material. Alternatively, negative refractive index also occurs when the group and phase velocities in the medium are in opposition. The latter phenomenon has been investigated extensively in the literature, including recent work involving chiral metamaterials with material dispersion up to the first order. This dissertation examines the possible emergence of negative refractive index in dispersive chiral (lossless and lossy) metamaterials with material dispersion up to the first and second order. The motivation of this work has two parts- the first part is to determine if using second- as opposed to first-order material dispersion may lead to more practically realizable negative index behavior in the lossless material; the second part is to determine if including the conductive loss to the medium with material dispersion up to the first order (a feature likely to be present in most realistic cases; conductive losses in such materials as nanometals, or dielectric losses in a variety of other nanomaterials, such as lithium niobate and Sic+Ag) may lead to the emergence of negative index. This dissertation investigates the above problems (with the exception of lossy dielectrics, the determination of which is currently ongoing) by using spectral and phasor plane-wave based analytical approaches as well as alternative analysis incorporating practical physical models into the electromagnetic equations. In this work, a spectral approach combined with slowly time-varying phasor analysis is applied leading to the derivation of EM phase and group velocities analytically, and the resulting phase and group velocities and the corresponding phase and group indices are evaluated by selecting somewhat arbitrary dispersive parameters. The results indicate the emergence of negative index (via negative phase indices along with positive group indices, as reported in the literature) or NIM behavior over information bandwidths in the low RF range. The second-order results are not significantly better than those for first-order based on the theoretical analysis; however, greater parametric flexibility exists for the second order system leading to higher likelihood of achieving NIM over practical frequency bands. The velocities and indices computed using the Lorentzian and Condon models. More importantly, NIM is found not to occur in first-order when using practical models. Also we have revisited the first order calculations and it is seen that (In the lossless -first order calculations) to match up with all negative index conditions or requirements, the relative electric permittivity and relative magnetic permeability must be negative in the NIM region. We investigated that the relative electric permittivity and magnetic permeability just can be negative in the negative sideband frequency. In the lossy case, the loss is introduced via the material's dispersive conductivity, and its effect in achieving NIM is carefully explored. Emergence of NIM is again established. Interestingly, it is found that the usual circular (RCP and LCP) spatial polarization states for the lossless material morph into right-handed spiral states once loss is introduced. These results derived via dispersive spectral analyses are in overall good agreement with corresponding findings in the literature.
Categories: Electromagnetic waves

FDTD Modeling of Metamaterials Theory and Applications

FDTD Modeling of Metamaterials  Theory and Applications

Moreover, this comprehensive volume offers guidance for handling the unique properties possessed by metamaterials, including how to define material parameters, characterize the interface of metamaterial slabs, and quantify their spatial as ...

Author: Yang Hao

Publisher: Artech House

ISBN: 9781596931602

Category: Technology & Engineering

Page: 360

View: 417

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 you pave the way to new metamaterial applications and advances in antenna, microwave, and optics engineering. You get in-depth coverage of state-of-the-art FDTD modeling techniques and applications for electromagnetic bandgap (EBG) structures, left-handed metamaterials (LHMs), wire medium, metamaterials for optics, and other practical metamaterials. You find steps for computing dispersion diagrams, dealing with material dispersion properties, and verifying the left-handedness. Moreover, this comprehensive volume offers guidance for handling the unique properties possessed by metamaterials, including how to define material parameters, characterize the interface of metamaterial slabs, and quantify their spatial as well as frequency dispersion characteristics. The book also presents conformal and dispersive FDTD modeling of electromagnetic cloaks, perfect lens, and plasmonic waveguides, as well as other novel antenna, microwave, and optical applications. Over 190 illustrations support key topics throughout the book.
Categories: Technology & Engineering

Physics of Negative Refraction and Negative Index Materials

Physics of Negative Refraction and Negative Index Materials

For the parameters we have chosen, the metamaterial is left-handed in the linear
regime for the frequency range from f1 = 5.787 GHz to f2 = 6.05 GHz. Our
simulations show that for the incident wave with the frequency f0 = 5.9 GHz (i.e.,
inside ...

Author: Clifford M. Krowne

Publisher: Springer Science & Business Media

ISBN: 9783540721321

Category: Science

Page: 380

View: 150

This book deals with the subject of optical and electronic negative refraction (NR) and negative index materials NIM). Diverse approaches for achieving NR and NIM are covered, such as using photonic crystals, phononic crystals, split-ring resonators (SRRs) and continuous media, focusing of waves, guided-wave behavior, and nonlinear effects. It is perhaps the most comprehensive book on the new class of negative refraction materials, covering all aspects of negative refraction and negative index materials.
Categories: Science