Electromagnetic Vortices
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Electromagnetic Vortices
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Author : Zhi Hao Jiang
language : en
Publisher: John Wiley & Sons
Release Date : 2021-12-09
Electromagnetic Vortices written by Zhi Hao Jiang and has been published by John Wiley & Sons this book supported file pdf, txt, epub, kindle and other format this book has been release on 2021-12-09 with Science categories.
Discover the most recent advances in electromagnetic vortices In Electromagnetic Vortices: Wave Phenomena and Engineering Applications, a team of distinguished researchers delivers a cutting-edge treatment of electromagnetic vortex waves, including their theoretical foundation, related wave properties, and several potentially transformative applications. The book is divided into three parts. The editors first include resources that describe the generation, sorting, and manipulation of vortex waves, as well as descriptions of interesting wave behavior in the infrared and optical regimes with custom-designed nanostructures. They then discuss the generation, multiplexing, and propagation of vortex waves at the microwave and millimeter-wave frequencies. Finally, the selected contributions discuss several representative practical applications of vortex waves from a system perspective. With coverage that incorporates demonstration examples from a wide range of related sub-areas, this essential edited volume also offers: Thorough introductions to the generation of optical vortex beams and transformation optical vortex wave synthesizers Comprehensive explorations of millimeter-wave metasurfaces for high-capacity and broadband generation of vector vortex beams, as well as orbital angular momentum (OAM) detection and its observation in second harmonic generations Practical discussions of microwave SPP circuits and coding metasurfaces for vortex beam generation and OAM-based structured radio beams and their applications In-depth examinations and explorations of OAM multiplexing for wireless communications, wireless power transmission, as well as quantum communications and simulations Perfect for students of wireless communications, antenna/RF design, optical communications, and nanophotonics, Electromagnetic Vortices: Wave Phenomena and Engineering Applications is also an indispensable resource for researchers in academia, at large defense contractors, and in government labs.
Electromagnetic Magnetostatic And Exchange Interaction Vortices In Confined Magnetic Structures
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Author : Eugene Kamenetskii
language : en
Publisher:
Release Date : 2008-01-01
Electromagnetic Magnetostatic And Exchange Interaction Vortices In Confined Magnetic Structures written by Eugene Kamenetskii and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2008-01-01 with categories.
There is currently much interest in studying vortex behaviors in different kinds of physical phenomena. Vortices can be easily observed in water. They are well recognized effects in plasma and atmospheric science. In vacuum, one can observe electromagnetic processes with broken symmetry characterizing by different topological effects. Manifestations of phase singularities in optical vortices have opened up a new frontier in optics. There is a large variety of vortex phenomena in condensed matter. It is well known that when a system consisting of many interacting particles is set rotating, it may form vortices. The concept of a vortex is at the center of our understanding of superfluidity. Vortices can appear in magnetically ordered structures and in Bose-Einstein condensates. In the vortex description, there can be used classical or quantum approaches. Vortices can or cannot carry the angular momentum. They can or cannot be characterized by some invariant, such as the flux of vorticity. In spite of the fact that vortices are in common occurrence in many physical problems, it seems very difficult at present to introduce an all-inclusive definition of such 'swirling' entities. Although not being an exhaustive treatise on vortices, this book intends to give a general overview on recent research topics on vortex phenomena in confined magnetic structures. In magnetic structures one can clearly distinguish three characteristic scales. There are the scales of the spin (exchange interaction) fields, the magnetostatic (dipole-dipole interaction) fields, and the electromagnetic fields. These characteristic scales may define different vortex states. It has been shown that in micrometer- or submicrometer-size ferromagnetic dots a magnetization vortex structure will be stable because of competition between the exchange and magnetic dipole interactions. Such magnetic vortices are topologically distinct and robust magnetic states. This stability has a potential as a unit cell for high density magnetic storage and magnetic logic devices. Magnetic vortex dynamics is closely related to their topological structure. One can observe chiral symmetry violation of the vortex states in ferromagnetic dots. A mechanism for changing the topological number of a magnetic configuration makes it possible to obtain controlled switching between the vortex structures. The influence of the vortices on the magnetization reversal was observed in thin ferromagnetic elements. There is a strong interest in study and implementation of vortex states in periodic arrays of magnetic dots. In dilute atomic Bose-Einstein condensates with spin degrees of freedom (the so-called spinor condensates), the anisotropic nature of the dipole interaction greatly enriches the dynamic properties of atoms. The interplay between the dipolar interaction and the spin exchange interaction may lead to the vortex state in the Bose-Einstein condensates that is analogous to the magnetic vortex found in thin magnetic films. Quantized vortices in BECs manifest the long-range phase coherence of many-particle quantum systems which are described by a complex-valued order parameter field, and their existence and stability is intimately related to the superfluid properties of the system. The dipole interaction provides us with a long-range mechanism of interaction. The importance of magnetostatic energy increases gradually as the magnetic structure size increases. Magnetostatic ferromagnetism has a character essentially different from exchange ferromagnetism. This statement finds strong confirmation in confinement phenomena of magnetic-dipolar-mode oscillations. In magnetic structures with the sizes from several micrometers up to tens of micrometers, one can observe peculiar magnetostatic (or magnetic-dipolar-mode) vortices. In quasi-2D magnetic-dipolar-mode ferrite disks two kinds of quantum-like conservation rules are encounted: the symmetry conservation and the double-valued-function electric flux quantization. The interplay between these conservation rules gives rise to unique vortex patterns. It is very interesting that together with the exchange-interaction and magnetic-dipolar vortex behaviors, electromagnetic (Poynting-vector) vortices can exist in ferromagnetic systems. A ferrite is a magnetic dielectric with low losses. This may allow for electromagnetic waves to penetrate the ferrite and results in an effective interaction between the electromagnetic waves and magnetization within the ferrite. At the ferromagnetic resonance conditions, such an interaction can demonstrate the electromagnetic vortex behaviors. One of the most exciting thing is that there can be found a certain resemblance between topological structures of phase singularities in quasi-2D electromagnetic and magnetization patterns. The book has 21 chapters. The chapters were written by top experts from 18 countries (Italy, Ukraine, UK, Mexico, USA, China, Germany, Brazil, Japan, Russia, France, Chile, Finland, Singapore, Greece, India, Canada, and Israel), who have contributed significantly to the advancement of the science and engineering of the magnetic vortex behaviors. I hope that the book will be a valuable aid to understand current studies in vortex phenomena in magnetic structures for scientists, researchers, and graduate students working in the field of electronic engineering, materials science, and condense matter physics. I would like to express my thanks to all of the authors who accepted my invitation to contribute the respective chapters. I would like to acknowledge Dr. S. G. Pandalai at Transworld Research Network for his invitation to me of editing this book. I would like to thank Prof. Reuven Shavit at the Electrical and Computer Engineering Department of Ben Gurion University of the Negev for his interest in new vortex behaviors in microwave magnetic systems, useful discussions, and valuable support in realization of this project. I would also like to thank my PhD student, Michael Sigalov, who is responsible in part for my scientific contribution to this book.
Innovation In Maxwell S Electromagnetic Theory
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Author : Daniel M. Siegel
language : en
Publisher: Cambridge University Press
Release Date : 2003-12-11
Innovation In Maxwell S Electromagnetic Theory written by Daniel M. Siegel and has been published by Cambridge University Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 2003-12-11 with Science categories.
Siegel's close analysis of the original texts - with careful attention to the equations as well as to the words - reveals that mechanical modeling played a crucial role in Maxwell's initial conceptualizations of the displacement current and the electromagnetic character of light.
Vortices In Unconventional Superconductors And Superfluids
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Author : R.P. Huebener
language : en
Publisher: Springer Science & Business Media
Release Date : 2013-03-09
Vortices In Unconventional Superconductors And Superfluids written by R.P. Huebener and has been published by Springer Science & Business Media this book supported file pdf, txt, epub, kindle and other format this book has been release on 2013-03-09 with Technology & Engineering categories.
Presents a modern treatment of the physics of vortex matter, mainly applied to unconventional superconductors and superfluids but with extensions to other areas of physics.
Coherent Vortex Structures In Fluids And Plasmas
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Author : Anatoli Tur
language : en
Publisher: Springer
Release Date : 2017-04-09
Coherent Vortex Structures In Fluids And Plasmas written by Anatoli Tur and has been published by Springer this book supported file pdf, txt, epub, kindle and other format this book has been release on 2017-04-09 with Science categories.
This monograph introduces readers to the hydrodynamics of vortex formation, and reviews the last decade of active research in the field, offering a unique focus on research topics at the crossroads of traditional fluids and plasmas. Vortices are responsible for the process of macroscopic transport of momentum, energy and mass, and are formed as the result of spontaneous self-organization. Playing an important role in nature and technology, localized, coherent vortices are regularly observed in shear flows, submerged jets, afterbody flows and in atmospheric boundary layers, sometimes taking on the form of vortex streets. In addition, the book addresses a number of open issues, including but not limited to: which singularities are permitted in a 2D Euler equation besides point vortices? Which other, even more complex, localized vortices could be contained in the Euler equation? How do point vortices interact with potential waves?
Vortices And Nanostructured Superconductors
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Author : Adrian Crisan
language : en
Publisher: Springer
Release Date : 2017-07-19
Vortices And Nanostructured Superconductors written by Adrian Crisan and has been published by Springer this book supported file pdf, txt, epub, kindle and other format this book has been release on 2017-07-19 with Technology & Engineering categories.
This book provides expert coverage of modern and novel aspects of the study of vortex matter, dynamics, and pinning in nanostructured and multi-component superconductors. Vortex matter in superconducting materials is a field of enormous beauty and intellectual challenge, which began with the theoretical prediction of vortices by A. Abrikosov (Nobel Laureate). Vortices, vortex dynamics, and pinning are key features in many of today’s human endeavors: from the huge superconducting accelerating magnets and detectors at the Large Hadron Collider at CERN, which opened new windows of knowledge on the universe, to the tiny superconducting transceivers using Rapid Single Flux Quanta, which have opened a revolutionary means of communication. In recent years, two new features have added to the intrinsic beauty and complexity of the subject: nanostructured/nanoengineered superconductors, and the discovery of a range of new materials showing multi-component (multi-gap) superconductivity. In this book, leading researchers survey the most exciting and important recent developments in the field. Topics covered include: the use of scanning Hall probe microscopy to visualize interactions of a single vortex with pinning centers; Magneto-Optical Imaging for investigating what vortex avalanches are, why they appear, and how they can be controlled; and the vortex interactions responsible for the second magnetization peak. Other chapters discuss nanoengineered pinning centers of vortices for improved current-carrying capabilities, current anisotropy in cryomagnetic devices in relation to the pinning landscape, and the new physics associated with the discovery of new superconducting materials with multi-component superconductivity. The book offers something for almost everybody interested in the field: from experimental techniques to visualize vortices and study their dynamics, to a state-of-the-art theoretical microscopic approach to multicomponent superconductivity.
A Vortex Theory Of The Electro Magnetic Field
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Author : Edmund Joseph Rendtorff
language : en
Publisher: Legare Street Press
Release Date : 2023-07-18
A Vortex Theory Of The Electro Magnetic Field written by Edmund Joseph Rendtorff and has been published by Legare Street Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 2023-07-18 with categories.
A Vortex Theory of the Electro-Magnetic Field is a groundbreaking work of theoretical physics that proposes a new model of the electromagnetic field as a series of interlocking vortices. Edmund Joseph Rendtorff argues that this model can explain many of the phenomena observed in electrical and magnetic experiments, as well as the behavior of light and other forms of radiation. Written in clear and accessible language, this book is a must-read for anyone interested in the frontiers of modern physics. This work has been selected by scholars as being culturally important, and is part of the knowledge base of civilization as we know it. This work is in the "public domain in the United States of America, and possibly other nations. Within the United States, you may freely copy and distribute this work, as no entity (individual or corporate) has a copyright on the body of the work. Scholars believe, and we concur, that this work is important enough to be preserved, reproduced, and made generally available to the public. We appreciate your support of the preservation process, and thank you for being an important part of keeping this knowledge alive and relevant.
Quantized Vortex Dynamics And Superfluid Turbulence
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Author : C.F. Barenghi
language : en
Publisher: Springer
Release Date : 2008-01-11
Quantized Vortex Dynamics And Superfluid Turbulence written by C.F. Barenghi and has been published by Springer this book supported file pdf, txt, epub, kindle and other format this book has been release on 2008-01-11 with Technology & Engineering categories.
This book springs from the programme Quantized Vortex Dynamics and Sup- ?uid Turbulence held at the Isaac Newton Institute for Mathematical Sciences (University of Cambridge) in August 2000. What motivated the programme was the recognition that two recent developments have moved the study of qu- tized vorticity, traditionally carried out within the low-temperature physics and condensed-matter physics communities, into a new era. The ?rst development is the increasing contact with classical ?uid dynamics and its ideas and methods. For example, some current experiments with - lium II now deal with very classical issues, such as the measurement of velocity spectra and turbulence decay rates. The evidence from these experiments and many others is that super?uid turbulence and classical turbulence share many features. The challenge is now to explain these similarities and explore the time scales and length scales over which they hold true. The observed classical aspects have also attracted attention to the role played by the ?ow of the normal ?uid, which was somewhat neglected in the past because of the lack of direct ?ow visualization. Increased computing power is also making it possible to study the coupled motion of super?uid vortices and normal ?uids. Another contact with classical physics arises through the interest in the study of super?uid vortex - connections. Reconnections have been studied for some time in the contexts of classical ?uid dynamics and magneto-hydrodynamics (MHD), and it is useful to learn from the experience acquired in other ?elds.
Vortex Electronics And Squids
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Author : Takeshi Kobayashi
language : en
Publisher: Springer Science & Business Media
Release Date : 2003-12-08
Vortex Electronics And Squids written by Takeshi Kobayashi and has been published by Springer Science & Business Media this book supported file pdf, txt, epub, kindle and other format this book has been release on 2003-12-08 with Science categories.
Understanding the nature of vortices in high-Tc superconductors is a crucial subject for research on superconductive electronics, especially for superconducting interference devices (SQUIDs), it is also a fundamental problem in condensed-matter physics. Recent technological progress in methods for both direct and indirect observation of vortices, e.g. scanning SQUID, terahertz imaging, and microwave excitation, has led to new insights into vortex physics, the dynamic behavior of vortices in junctions and related questions of noise. This book presents the current status of research activity and provides new information on the applications of SQUIDs, including magnetocardiography, immunoassays, and laser-SQUID microscopes, all of which are close to being commercially available.
Vortex Molecular Spin And Nanovorticity
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Author : Percival McCormack
language : en
Publisher: Springer Science & Business Media
Release Date : 2011-09-21
Vortex Molecular Spin And Nanovorticity written by Percival McCormack and has been published by Springer Science & Business Media this book supported file pdf, txt, epub, kindle and other format this book has been release on 2011-09-21 with Science categories.
The subject of this book is the physics of vortices. A detailed analysis of the dynamics of vortices will be presented. The important topics of vorticity and molecular spin will be dealt with, including the electromagnetic analogy and quantization in superfluids. The effect of molecular spin on the dynamics of molecular nano-confined fluids using the extended Navier-Stokes equations will also be covered –especially important to the theory and applicability of nanofluidics and associated devices. The nanoscale boundary layer and nanoscale vortex core are regions of intense vorticity (molecular spin). It will be shown, based on molecular kinetic theory and thermodynamics, that the macroscopic (solid body) rotation must be accompanied by internal rotation of the molecules. Electric polarization of the internal molecular rotations about the local rotation axis –the Barnett effect – occurs. In such a spin aligned system, major changes in the physical properties of the fluid result.