Vortex Dynamics And Optical Vortices
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Vortex Dynamics And Optical Vortices
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Author : Hector Perez-De-Tejada
language : en
Publisher: BoD – Books on Demand
Release Date : 2017-03-01
Vortex Dynamics And Optical Vortices written by Hector Perez-De-Tejada and has been published by BoD – Books on Demand this book supported file pdf, txt, epub, kindle and other format this book has been release on 2017-03-01 with Science categories.
The contents of the book cover a wide variety of topics related to the analysis of the dynamics of vortices and describe the results of experiments, computational modeling and their interpretation. The book contains 13 chapters reaching areas of physics in vortex dynamics and optical vortices including vortices in superfluid atomic gases, vortex laser beams, vortex-antivortex in ferromagnetic hybrids, and optical vortices illumination in chiral nanostructures. Also, discussions are presented on particle motion in vortex flows, on the simulation of vortex-dominated flows, on vortices in saturable media, on achromatic vortices, and on ultraviolet vortices. Fractal light vortices, coherent vortex beams, together with vortices in electric dipole radiation, and spin wave dynamics in magnetic vortices are examined as well.
Vortex Dynamics And Optical Vortices
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Author :
language : en
Publisher:
Release Date : 19??
Vortex Dynamics And Optical Vortices written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 19?? with categories.
Optical Vortex And Poincar Analysis For Biophysical Dynamics
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Author :
language : en
Publisher:
Release Date : 2019
Optical Vortex And Poincar Analysis For Biophysical Dynamics written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2019 with categories.
Abstract : Coherent light - such as that from a laser - on interaction with biological tissues, undergoes scattering. This scattered light undergoes interference and the resultant field has randomly added phases and amplitudes. This random interference pattern is known as speckles, and has been the subject of multiple applications, including imaging techniques. These speckle fields inherently contain optical vortices, or phase singularities. These are locations where the intensity (or amplitude) of the interference pattern is zero, and the phase is undefined. In the research presented in this dissertation, dynamic speckle patterns were obtained through computer simulations as well as laboratory setups involving scattering from phantoms and animal tissues. Optical vortices were tracked within these patterns. Novel techniques were applied to relate scattering media dynamics with the temporal evolution of the speckle fields and the optical vortex locations. Parameters, such as optical vortex trail lengths, mobility of optical vortices and charge separation between different types of vortices were introduced and calculated. Mathematical formulations, namely Poincaré descriptors, were employed to analyze the statistics of speckle intensity and optical vortex dynamics. A brief review of the advancements in the understanding and detection of optical vortices is presented. This is followed by the theory behind Poincaré analysis. It is concluded that Poincaré descriptors can be used to characterize the correlation in a data series. Speckle patterns with different dynamic behaviors - such as Brownian and Lorentzian modes of decorrelation between consecutive frames, at varying rates - were studied. It was noted that measuring the optical vortex parameters in a dynamically evolving field, provided insights into the decorrelation characteristics of the scattering medium. As speckle size is a statistical measure of the intensity variation in the field, the use of Poincaré descriptors to estimate speckle size is demonstrated. Additionally, these descriptors differentiate between short- and long-range orders in data. Laser speckle images obtained from flow in fluid phantoms and animal tissues indicated that Poincaré analysis provides an alternate method of quantifying flow.
Optical Vortices
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Author : M. Vasnetsov
language : en
Publisher:
Release Date : 1999
Optical Vortices written by M. Vasnetsov and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1999 with Science categories.
This compilation is the first book entirely devoted to the phrase singularities of light, marking the coming-of-age of the subject. Therefore it is appropriate here to recall the circumstances in which John Nye and the authors wrote their original paper on wave dislocations in 1974, and also to set optical vortices in a more general context.
Vortex Dynamics Theories And Applications
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Author : Zambri Harun
language : en
Publisher: BoD – Books on Demand
Release Date : 2020-12-09
Vortex Dynamics Theories And Applications written by Zambri Harun and has been published by BoD – Books on Demand this book supported file pdf, txt, epub, kindle and other format this book has been release on 2020-12-09 with Science categories.
The book comprises of different areas in which vortex dynamics is important, its generation, evolution, interactions with other motions, and finally the ways it can be controlled. Vortex characteristics are important in many aspects of our lives, from blood circulation in the arteries to the high-speed jet. Flow control and manipulation of vortices have been used to reduce drag for large tankers resulting in billions of dollars in savings. An effective smoke management system must be put in place for critical areas to ensure the safety of people, for example in a very large shopping complex or a large airport. Advanced computational and cloud-computing facilities have contributed significantly to large-scale simulation projects. Therefore, validations could be performed for larger windows of study so that it can now cover the entire e.g. central business district (CBD) for urban heat island (UHI) study or land-ocean interactions.
Vortex Dynamics
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Author : İlkay Bakırtaş
language : en
Publisher: BoD – Books on Demand
Release Date : 2022-09-28
Vortex Dynamics written by İlkay Bakırtaş and has been published by BoD – Books on Demand this book supported file pdf, txt, epub, kindle and other format this book has been release on 2022-09-28 with Science categories.
This book discusses vortex dynamics theory from physics, mathematics, and engineering perspectives. It includes nine chapters that cover a variety of research results related to vortex dynamics including nonlinear optics, fluid dynamics, and plasma physics.
Vorticity And Vortex Dynamics
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Author : Jie-Zhi Wu
language : en
Publisher: Springer
Release Date : 2006-04-04
Vorticity And Vortex Dynamics written by Jie-Zhi Wu and has been published by Springer this book supported file pdf, txt, epub, kindle and other format this book has been release on 2006-04-04 with Technology & Engineering categories.
Vortex Dynamics And Vortex Methods
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Author : Christopher Radcliff Anderson
language : en
Publisher: American Mathematical Soc.
Release Date : 1991-12-23
Vortex Dynamics And Vortex Methods written by Christopher Radcliff Anderson and has been published by American Mathematical Soc. this book supported file pdf, txt, epub, kindle and other format this book has been release on 1991-12-23 with Science categories.
Understanding vortex dynamics is the key to understanding much of fluid dynamics. For this reason, many researchers, using a great variety of different approaches--analytical, computational, and experimental--have studied the dynamics of vorticity. The AMS-SIAM Summer Seminar on Vortex Dynamics and Vortex Methods, held in June 1990 at the University of Washington in Seattle, brought together experts with a broad range of viewpoints and areas of specialization. This volume contains the proceedings from that seminar. The focus here is on the numerical computation of high Reynolds number incompressible flows. Also included is a smaller selection of important experimental results and analytic treatments. Many of the articles contain valuable introductory and survey material as well as open problems. Readers will appreciate this volume for its coverage of a wide variety of numerical, analytical, and experimental tools and for its treatment of interesting important discoveries made with these tools.
Vortex Dominated Flows
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Author : Denis L. Blackmore
language : en
Publisher: World Scientific
Release Date : 2005
Vortex Dominated Flows written by Denis L. Blackmore and has been published by World Scientific this book supported file pdf, txt, epub, kindle and other format this book has been release on 2005 with Science categories.
Honoring the contributions of one of the field's leading experts, Lu Ting, this indispensable volume contains important new results at the cutting edge of research. A wide variety of significant new analytical and numerical results in critical areas are presented, including point vortex dynamics, superconductor vortices, cavity flows, vortex breakdown, shock/vortex interaction, wake flows, magneto-hydrodynamics, rotary wake flows, and hypersonic vortex phenomena.The book will be invaluable for those interested in the state of the art of vortex dominated flows, both from a theoretical and applied perspective.Professor Lu Ting and Joe Keller have worked together for over 40 years. In their first joint work entitled ?Periodic vibrations of systems governed by nonlinear partial differential equations?, perturbation analysis and bifurcation theory were used to determine the frequencies and modes of vibration of various physical systems. The novelty was the application to partial differential equations of methods which, previously, had been used almost exclusively on ordinary differential equations. Professsor Lu Ting is an expert in both fluid dynamics and the use of matched asymptotic expansions. His physical insight into fluid flows has led the way to finding the appropriate mathematical simplications used in the solutions to many difficult flow problems.
Generation And Manipulation Of Optical Vortices
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Author : Hari Kishore Allamsetty
language : en
Publisher:
Release Date : 2004
Generation And Manipulation Of Optical Vortices written by Hari Kishore Allamsetty and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2004 with categories.
Optical vortices are singularities in phase fronts of laser beams. They are characterized by a dark core due to phase dislocation emanating from the zero in field. A "charge" can be associated with the dislocation, the sign of which changes depending on whether the phase increases or decreases by an integer multiple of 2[pi] upon circling the zero. The object of the research presented in this dissertation was to explore ways for triggering or exploding a higher order vortex and to examine arithmetic properties of optical vortices using analytical and numerical methods. Diffractive optical masks can be produced to generate complex array patterns. Horizontal and vertical shift of complex patterns can be done with great ease. Rouche's theorem was used for analyzing and then providing a means for dramatically modifying a vortex structure for vortex-order conversion. We also report an efficient method for destroying an optical vortex. We have shown how fabricating masks for observing vortices in the complex space (off the real plane) one can super resolve submicron sized features. The results presented in the thesis offer us a better understanding of dynamics of exploded vortices which may result in application in optical switching, optical data storage, manipulation of micro particles and free-space data communication.