Electromagnetic interactions of dipole distributions with a stratified medium: Power fluxes and scattering cross sections

Kalogeropoulos, Andreas P.; Tsitsas, Nikolaos L.

doi:10.1111/sapm.12469

Cited by 6 publications

(8 citation statements)

References 28 publications

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“…Extinction cross‐section is the attenuation of the passing plane wave and is the result of the absorption and scattering cross‐section. [ 52,53 ] As determined through the Poynting vector, the absorption cross‐section, σ abs, and scattering cross‐sections, σ scatt , are given as

\left(\sigma\right)_{\text{abs}} = 4 \pi k a^{3} I m \left(\right. \frac{\epsilon - \left(\epsilon\right)_{m}}{\epsilon + 2 \left(\epsilon\right)_{m}} \left.\right)

$$\left(\sigma\right)_{\text{scatt}} = \frac{8 \pi}{3} k^{4} a^{6} \left(\left|\right.

…”

Section: Lspr and Plasmonic Materialsmentioning

confidence: 99%

“…Extinction cross-section is the attenuation of the passing plane wave and is the result of the absorption and scattering cross-section. [52,53] As determined through the Poynting vector, the absorption cross-section, σ abs, and scattering cross-sections, σ scatt , are given as…”

Section: Fundamentals Of Plasmonic Visible Light Harvestingmentioning

confidence: 99%

“…The cross-sections, namely, extinction, absorption, and scattering (shown in Figure 4), influence how much of the light interacting with the plasmonic nanomaterial is being utilized. [51][52][53] The shape of the NP is one of the major governing factors for optical absorption and losses. The spherical NP has been hugely studied for this reason.…”

Section: Light Absorption and Scatteringmentioning

confidence: 99%

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Plasmonic Solar Energy Harvesting by ZnO Nanostructures and Their Composite Interfaces: A Review on Fundamentals, Recent Advances, and Applications

et al. 2023

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Zinc oxide is one of the inexpensive semiconductors with rich electronic and optical properties. It is studied in energy applications for a long time. The wide bandgap of ZnO either needs structural change or sensitizing via quantum dots, dyes, or metallic nanoparticles (through the plasmonic effect) to absorb visible light for applications in solar energy harvesting devices. This review provides a fundamental insight of plasmonic visible light harvesting by ZnO and an account of recent advances in solar photovoltaic, photoelectrochemical water splitting, and other photoredox activities, such as water quality enhancement and CO2 reduction.

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\left(\sigma\right)_{\text{abs}} = 4 \pi k a^{3} I m \left(\right. \frac{\epsilon - \left(\epsilon\right)_{m}}{\epsilon + 2 \left(\epsilon\right)_{m}} \left.\right)

$$\left(\sigma\right)_{\text{scatt}} = \frac{8 \pi}{3} k^{4} a^{6} \left(\left|\right.

…”

Section: Lspr and Plasmonic Materialsmentioning

confidence: 99%

Section: Fundamentals Of Plasmonic Visible Light Harvestingmentioning

confidence: 99%

Section: Light Absorption and Scatteringmentioning

confidence: 99%

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Plasmonic Solar Energy Harvesting by ZnO Nanostructures and Their Composite Interfaces: A Review on Fundamentals, Recent Advances, and Applications

et al. 2023

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“…Inside the host medium Vh, the acoustic intensity boldIh is decomposed as follows [17]: boldIhfalse(rfalse)=boldIhprfalse(rfalse)+boldIhscfalse(rfalse)+boldIhintfalse(rfalse),where the primary intensity boldIhpr, scattered intensity boldIhsc and interaction intensity boldIhint are, respectively, given by right left right left right left right left right left right left3pt0em 2em 0em 2em 0em 2em 0em 2em 0em 2em 0emtrueIhpr=uhpr∇ϕhprfalse¯, right left right left right left right left right left right left3pt0em 2em 0em 2em 0em 2em 0em 2em 0em 2em 0emtrueIhsc=…”

Section: Multiple Scattering Problem Formulation and Geometry Settingmentioning

confidence: 99%

“…Specifically, the study of the energy process in sound propagation and scattering, in problems like propagation in acoustic waveguides [15] and reverberant spaces [16], requires the investigation of the complex form of the acoustic intensity vector. In particular, the imaginary part of the acoustic intensity accounts for the reactive intensity and enables a more global understanding of the various power exchanges occurring when more than one field coexist in the same volume [17,18]. The use of the complex form of the energy functionals reveals additional information about the energy transfer process [19,20], yet, requires an alteration in the mathematical approach for delivering scattering relations.…”

Section: Introductionmentioning

confidence: 99%

Analysis of the energy transfer process for multiple scattering problems involving lossy media

Kalogeropoulos,

Tsitsas

2023

Proc. R. Soc. A.

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The energy transfer process for acoustic propagation and scattering in inhomogeneous, lossy media is rigorously investigated. Two problems are considered: an arbitrarily composed cluster of lossy scatterers, excited by a single point source and a layered, lossy medium excited by an internal point-source distribution. Energy conservation laws and optical theorems are established. The connection of active intensity with the scattering cross section and the relation between reactive intensity and Lagrangian density are determined. Furthermore, the influence of the losses of the involved media to the kinetic energy is unveiled. Reductions to lossless media and near-zero frequency values are derived.

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Analytical algorithms for direct and inverse problems pertaining to the electromagnetic excitation of a layered medium by N dipoles

Kalogeropoulos,

Tsitsas

2023

Math Methods in App Sciences

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The direct problem of exciting a multilayered spherical medium by a distribution of arbitrarily located (internal and external) electric dipoles is considered. A formulation based on excitation operators is adopted. The solution of the direct problem is obtained by means of an overall superposition method that combines elements of the T‐matrix approach, the Sommerfeld's method, and Green's functions' techniques. Approximations are extracted for the obtained far‐field patterns in the long‐wavelength (low‐frequency) regime. A set of source‐localization inverse problems is considered. Analytical algorithms are devised in which nonlinear systems are obtained from specifically selected low‐frequency far‐field measurements. These systems are subsequently solved explicitly including all special cases. The developed algorithms are noninvasive and can determine accurately the characteristics of internal sources.

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Electromagnetic interactions of dipole distributions with a stratified medium: Power fluxes and scattering cross sections

Cited by 6 publications

References 28 publications

Plasmonic Solar Energy Harvesting by ZnO Nanostructures and Their Composite Interfaces: A Review on Fundamentals, Recent Advances, and Applications

Plasmonic Solar Energy Harvesting by ZnO Nanostructures and Their Composite Interfaces: A Review on Fundamentals, Recent Advances, and Applications

Analysis of the energy transfer process for multiple scattering problems involving lossy media

Analytical algorithms for direct and inverse problems pertaining to the electromagnetic excitation of a layered medium by N dipoles

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