Electromagnetic Theory

Stratton, J. A.

doi:10.1002/9781119134640

Cited by 724 publications

(778 citation statements)

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“…(1), in the coordinate system of the particle. Using a standard wave transformation technique (Stratton 1941), one can rewrite the incident sound field in the spherical coordinate system , ∑ The unknown scattering coefficients have to be determined by imposing appropriate boundary conditions at particle's inner and outer surfaces. This will be dealt with later.…”

Section: Mathematical Formulationmentioning

confidence: 99%

Application of Acoustic Bessel Beams for Handling of Hollow Porous Spheres

Azarpeyvand

2014

Ultrasound in Medicine & Biology

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ABSTRACT-Acoustic manipulation of porous spherical shells, widely used as drug delivery carriers and magnetic resonance imaging contrast agents, is investigated analytically. The technique used for this purpose is based on the application of high-order Bessel beams for as a single-beam acoustic manipulation device, using which particles lying on the axis of the beam can be pulled toward the beam source. The exerted acoustic radiation force is calculated using the standard partial-wave series method and the wave propagation within the porous media is modeled using Biot's theory of poroelasticity. Numerical simulations are performed for porous aluminum and silica shells of different thicknesses and porosities.Results have shown that manipulation of low-porosity shells is possible using Bessel beams with large conical angles, over a number of broadband frequency ranges; while that for highly porous shells generally occurs over some narrowband frequency domains at much smaller conical angles.

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Section: Mathematical Formulationmentioning

confidence: 99%

Application of Acoustic Bessel Beams for Handling of Hollow Porous Spheres

Azarpeyvand

2014

Ultrasound in Medicine & Biology

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“…Based on the properties of surface plasmons, which are "transverse magnetic (TM) in nature" and on known properties of TM electromagnetic waves [24], one can write for the H y -component of the magnetic field [19]:…”

Section: Mathieu's Equationmentioning

confidence: 99%

Application of the Mathieu’s equation for a design of a photonic crystal supporting surface electromagnetic waves

Rostova

Dietler

Sekatskii

2015

AEM

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Nowadays, unique characteristics of surface electromagnetic waves, particularly, surface plasmons supported by a specially designed photonic crystal find numerous applications. We propose to exploit an evident analogy between such a photonic crystal and a structure with a sine-modulated refractive index. The light propagation inside the latter is described by the famous Mathieu's differential equation. This application of the Mathieu's equation can be useful for a design of multilayer structures, and also for fundamental understanding of electromagnetic phenomena in inhomogeneous media.

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“…Finally, Maxwell Garnett formula [42] for effective permittivity of a mixture in i direction, having ellipsoidal particles with permittivity suspended in a medium with permittivity a is given as:…”

Section: Permittivitymentioning

confidence: 99%

Review and Assessment of Electromagnetic Wave Propagation in Sand and Dust Storms at Microwave and Millimeter Wave Bands --- Part I

Musa¹,

Bashir²,

Abdalla³

2014

PIER M

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Abstract-Electromagnetic wave propagation in arid and semi-arid regions is influenced by sand and dust storms. Meagre information has hitherto been reported as to the effect of storms on telecommunication systems operating in such regions. This paper presents a survey of current understanding of the wave propagation during storms. In this first part of the review-Part I, detailed parametric assessment of some electrical and mechanical properties affecting wave propagation in sand and dust storms is given. The second part of the review-Part II describes the principle of approach and technology adopted for the investigation highlighting both strengths and drawbacks. The results demonstrate that most authors have calculated signal attenuation effect, revealing that it is not very significant unless during severe storms. A few papers indicate the possibility of more significant cross polarisation. Part I explicitly gives an account of the sand and dust storms' phenomenon, reviews the storms' parameters affecting electromagnetic wave propagations and discusses the microwave and millimeter wave bands.

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Electromagnetic Theory

Cited by 724 publications

References 0 publications

Application of Acoustic Bessel Beams for Handling of Hollow Porous Spheres

Application of Acoustic Bessel Beams for Handling of Hollow Porous Spheres

Application of the Mathieu’s equation for a design of a photonic crystal supporting surface electromagnetic waves

Review and Assessment of Electromagnetic Wave Propagation in Sand and Dust Storms at Microwave and Millimeter Wave Bands --- Part I

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