Last edited by Aragul
Saturday, April 25, 2020 | History

2 edition of Electromagnetic resonances of metallic bodies found in the catalog.

Electromagnetic resonances of metallic bodies

  • 388 Want to read
  • 26 Currently reading

Published by Naval Postgraduate School, Available from National Technical Information Service in Monterey, Calif, Springfield, Va .
Written in English

    Subjects:
  • RESONANT FREQUENCY,
  • ELECTROMAGNETIC RADIATION

  • About the Edition

    Every object has the ability to radiate and scatter electromagnetic waves. The ability to predict frequencies of maximum radiation or scattering has been limited to simple objects, such as dipoles, or objects with high degrees of symmetry. This thesis describes modifications that can be made to a computational electromagnetic technique, the Method of Moments, to allow for such. predictions to be made for complex metallic objects. This new technique has been implemented as a MATLAB computer program and tested on objects with known resonance frequencies. Finally, the code"s ability to handle large complex objects is demonstrated by investigating the resonance frequencies for a Cessna aircraft.

    Classifications
    LC ClassificationsL6717
    The Physical Object
    Paginationviii, 47 p. ;
    Number of Pages47
    ID Numbers
    Open LibraryOL25310345M
    OCLC/WorldCa640492873

    EMR - Electromagnetic Resonance. Looking for abbreviations of EMR? It is Electromagnetic Resonance. Electromagnetic resonances control over the 3D space by structural manipulation allows precise control over the propagation of light. "Electromagnetic resonances of sub-wavelength rectangular metallic gratings," Eur. In , German physicist and professor W.O. Schumann hypothesized there were measurable electromagnetic waves in the atmosphere that existed in the cavity (or space) between the surface of the earth and the ionosphere. According to NASA, the ionosphere is an abundant layer of electrons, ionized atoms, and molecules that stretches from approximately 30 miles above.


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Electromagnetic resonances of metallic bodies by William A. Lintz Download PDF EPUB FB2

Electromagnetic resonances of metallic Bodies [William A Lintz] on *FREE* Electromagnetic resonances of metallic bodies book on Electromagnetic resonances of metallic bodies book offers. Every object has the ability to radiate and scatter electromagnetic waves. The ability to predict frequencies of maximum radiation or scattering has been limited to simple objects, such as dipoles, or objects with high degrees of : Electromagnetism (Dover Books on Physics) Paperback – January The Electromagnetic Field (Dover Books on Physics) Albert Shadowitz.

out of 5 stars Kindle Edition. $ A good night's sleep is essential for keeping our minds and bodies strong. Explore Audible's collection of free sleep and relaxation audio experiences/5(15).

predictionstobemadeforcomplexmetallicobjects. This new techniquehasbeen implemented as a MATLAB computerprogram and tested on objects with known resonance y. This book is devoted to the numerous phenomena arising from the interplay between electromagnetic resonances and nonlinear optical interactions.

These resonances are associated with surface plasmas or guided waves, excited in nonlinear optical resonators such as prisms or grating by: Approved for public release; distribution is unlimitedEvery object has the ability to radiate and scatter electromagnetic waves. The ability to predict frequencies of maximum radiation or scattering has been limited to simple objects, such as dipoles, or Author: William A Lintz.

The electromagnetic modes and the resonances of homogeneous, finite size, two-dimensional bodies are. examined in the frequency domain by a rigorous full wave approach based on an integro-differential.

formulation of the electromagnetic scattering problem. viii Electromagnetic Modeling of Composite Metallic and Dielectric Structures CSIE Thin-Plate Approximation Thin-Wire Approximation Hallen Equation IBC-IE Optimal Choice of BIEs for Analysis of Metallic Structures BIEs for Combined Metallic and Dielectric Structures   Modeling the shielding effectiveness and resonances of metallic shielding enclosures loaded with PCBs Abstract: In this paper, a method of moments formulation is proposed to characterise the shielding effectiveness and the position of resonance frequencies in partitioned metallic rectangular enclosures.

A metallic Fabry-Perot directive antenna Abstract: We report the design of a directive antenna using the electromagnetic resonances of a Fabry-Perot cavity. The Fabry-Perot cavity is made of a ground plane and a single metallic by:   The fields scattered by metallic bodies or radiated by some types of antennas are created by the surfaces currents and therefore they are subject to some restrictions.

The book is the first one where the properties of these fields are investigated in details. Electromagnetic resonances of sub-wavelength rectangular metallic gratings Article (PDF Available) in The European Physical Journal D 23(1) April with Reads How we measure 'reads'.

Electromagnetic Resonance. Electromagnetic resonance is a phenomenon produced by simultaneously applying steady magnetic field and electromagnetic radiation (usually radio waves) to a sample of electrons and then adjusting both the strength of the magnetic field and the frequency of the radiation to produce absorption of the radiation.

Additionally, metallic NPs with sizes smaller than the wavelength of light show strong dipolar excitations in the form of localized surface plasmon resonances (LSPR).

LSPRs are non-propagating excitations of the conduction electrons of metallic NPs coupled to the electromagnetic field [ 1 ].Cited by: The electromagnetic scattering resonances of a collection of macroscopic bodies with uniform electric properties are used to construct a spectral representation for the scattered field.

Electromagnetic waves interact with all objects in space but differently at different frequencies. For example, the physical dimensions of an antenna, such as the length of a dipole or the diameter of a circular horn, determine the frequency range of antenna operation.

Any metallic object can operate as an efficient antenna at a number of : William A. Lintz. Publisher Summary. The presence of a metallic object strongly affects the electromagnetic field in its vicinity, and this is the main origin of most plasmon-related effects, including surface-enhanced Raman scattering (SERS).

This chapter describes the issue of. We report the optical response of dielectric sub-micrometer particle dimers with resonances in the visible, illustrating a hybridization of electric and magnetic dipolar modes of their individual constituents.

The experimental results, corroborated by the numerical calculations, reveal the contributions to the scattering from homogeneous pairs of dipolar electric–electric and Cited by: In this study, a wavelength selective absorber with a film-coupled fishnet grating metamaterial using W and SiO 2 was proposed and discussed.

Compared to the flat W surface, the simple fishnet-structured metallic absorber showed a significant enhancement in its by: 6. Overview. Resonance occurs when a system is able to store and easily transfer energy between two or more different storage modes (such as kinetic energy and potential energy in the case of a simple pendulum).

However, there are some losses from cycle to cycle, called damping is small, the resonant frequency is approximately equal to the natural frequency of. This book presents a comprehensive treatment of electromagnetic analysis and design of three critical devices for an MRI system - the magnet, gradient coils, and radiofrequency (RF) coils.

Electromagnetic Analysis and Design in Magnetic Resonance Imaging is unique in its detailed examination of the analysis and design of the hardware for an MRI system.5/5(1). Dark-hot resonances. In atoms and molecules subjected to electromagnetic fields, resonances show up in spectra as narrow peaks of absorption, emission or scattering.

3 at the systems Cited by: Electromagnetic resonances are associated with surface plasmas or guided waves, excited in nonlinear optical resonators such as prisms or grating couplers.

This volume is devoted to the numerous phenomena arising from the interplay between electromagnetic resonances and nonlinear optical interactions. 7 Wire metallic antennas and scatterers in the presence of dielectric bodies, Introduction, Entire-domain method for analysis of wire metallic antennas and scatterers, General expressions for potentials and field vectors of currents and charges along the antenna modeled by straight wire segments,   This value is in sync with the frequencies on which our bodies work, particularly the brain and the heart.

The electromagnetic field generated by our hearts is evolutionarily tuned to a frequency of Hz. The fact is, however, that the Schumann resonances have been increasing steadily since the s. experimental study of the electromagnetic resonances of conducting bodies with attached wires.

This work is similar to a previous investi- gation described in NASA CR [Ref. 11; the major difference in the present case is the use of smaller, more resistive wires. The conducting bodies included two cylinders and an approximate scale model. The electromagnetic properties of two-dimensional meta-materials consisting of an array of metallic strips pairs (MSPs) are investigated using electromagnetic simulations.

Simulated transmission through a single layer of MSPs show that electromagnetic resonances corresponding to electric and magnetic dipole resonances can be excited. Plasmonic and Metamaterial Structures as Electromagnetic Absorbers Yanxia Cui1,2, Yingran He1, Yi Jin1, Fei Ding1, Liu Yang1, Yuqian Ye3, Shoumin Zhong1, Yinyue Lin2, Sailing He1,* 1 State Key Laboratory of Modern Optical Instrumentation, Centre for Optical and Electromagnetic Research, Zhejiang University, HangzhouChina 2 Key Lab of Advanced Transducers.

Full-wave electromagnetic modes and hybridization in nanoparticle dimers Mariano Pascale1, Giovanni Miano1, Roberto Tricarico1,2, and Carlo Forestiere1,* 1Department of Electrical Engineering and Information Technology, Universita degli Studi di Napoli Federico II, via` Clau Napoli,Italy 2ICFO Institut de Ciencies Fot`oniques, The Barcelona Institute of Author: Mariano Pascale, Giovanni Miano, Roberto Tricarico, Carlo Forestiere.

Resonance is a common phenomenon, which is observed both in nature and in numerous devices and structures. It occurs in literally all types of vibrations. To mention just a few examples, acoustic, mechanical, or electromagnetic resonance can be distinguished.

In the present book, 12 chapters dealing with different aspects of resonance phenomena have been presented. Abstract Electromagnetic absorbers have drawn increasing attention in many areas. A series of plasmonic and metama-terial structures can work as efficient narrowband absorbers due to the excitation of plasmonic or photonic resonances, pro-viding a great potential for applications in designing selective thermal emitters, biosensing, by: Schumann resonances.

The Schumann resonances (SR) are a set of spectrum peaks in the extremely low frequency (ELF) portion of the Earth's electromagnetic field spectrum. Schumann resonances are global electromagnetic resonances, generated and excited by lightning discharges in the cavity formed by the Earth's surface and the ionosphere.

Plasmonic nanoclusters: a path towards based on clusters of metallic nanoparticles which we will term Artificial Plasmonic Molecules (APMs). APMs comprising four nanoparticles in a “Theory of resonances in the electromagnetic scattering by macroscopic bodies,”. Along with Earth’s basic static field, the Schumann resonances make up what people tend to refer to as a set of “earth-based frequencies.” The Schumann resonances are a set of peaks in the extremely low frequency portion of the Earth’s electromagnetic spectrum, between about 3Hz and 60Hz, with obvious peaks at Hz, Hz, Hz.

where, and λ d =30μm, introduced in (Wallén et al., ).This model is a curve fit on Johnson and Christy experimental data for bulk is a widely used reference material, mostly due to its strong plasmonic resonances occurring at the optical‐near UV spectrum (Kreibig & Vollmer, ).Since the used model is a simple Drude model, all of the presented results can be Cited by: 2.

PLASMONS AND DIFFRACTION OF AN ELECTRO-MAGNETIC PLANE WAVE BY A METALLIC SPHERE M. Apostol and G. Vaman Department of Theoretical Physics Institute for Atomic Physics Magurele-Bucharest MG-6, P. Box MG, Romania Abstract|The difiraction of a plane electromagnetic wave by an ideal metallic sphere (Mie’s theory) is investigated by.

Purchase Principles of Surface-Enhanced Raman Spectroscopy - 1st Edition. Print Book & E-Book. ISBNSurface shape resonances in lamellar metallic gratings Item Preview remove-circle For the first time, experimental evidence of the excitation of electromagnetic surface shape resonances for optical frequencies is given.

In these resonances the electric field is highly localized inside the grooves and is almost zero in all other regions. 2 1 Basic Electromagnetic Theory of SERS Plasmon Resonances and Field Enhancements Optical Properties of Simple Metals None of the modern optical techniques such as surface-enhanced fluorescence (SEF) [18–20], surface plasmon resonance spectroscopy [21–23] or.

ConspectusPlasmonic surface lattice resonances (SLRs) are mixed light–matter states emergent in a system of periodically arranged metallic nanoparticles (NPs) under the constraint that the array spacing is able to support a standing wave of optical-frequency light.

The properties of SLRs derive from two separate physical effects; the electromagnetic (plasmonic) response of metal Cited by: 2. Schumann resonances are the principal background in the electromagnetic spectrum beginning at 3 Hz and extending to 60 Hz, and appear as distinct peaks at extremely low frequencies (ELF) around 7.The Huygens' box (HB) method of replacing an arbitrary module inside an electronic apparatus with a set of current sources on a closed surface is discussed.

A numerical study is performed, with a typical printed circuit board (PCB) representing the module placed inside a tight metallic Cited by: 1.In nanophotonics, subwavelength localization of light is usually associated with plasmonics, the collective excitation of electrons and electromagnetic waves at metallic surfaces.

Recent developments in the physics of high-index dielectric nanoparticles, however, suggest an alternative mechanism of light localization: low-order dipole and higherorder multipole Mie resonances.