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- W2949968682 abstract "In this work, we develop frameworks to study anddesign the scattering properties in two kinds of systems. For thefirst problem, we find approximate angle/ frequency-averaged limitson absorption enhancement due to multiple scattering from arrays ofmetaparticles, applicable to general wave-scattering problems andmotivated here by ocean-buoy energy extraction. We show thatgeneral limits, including the well known Yablonovitch result insolar cells, arise from reciprocity conditions. The use ofreciprocity in the radiative transfer equation (similar to astochastic regime neglecting coherent effects) justify the use of adiffusion model as an upper estimation for the enhancement. Thisallows us to write an analytical formula for the maximumangle/frequency-averaged enhancement. We use this result to proposeand quantify approaches to increase performance through carefulparticle design and/or using external reflectors. For the secondproblem, we develop a design method for multi-grid frequencyselective metasurfaces based on temporal coupled mode theory (CMT).In particular, we design an elliptic passband filter with a centerfrequency of 10 GHz, bandwidth of 10% and relatively good angledependence." @default.
- W2949968682 created "2019-06-27" @default.
- W2949968682 creator A5065481220 @default.
- W2949968682 date "2018-01-01" @default.
- W2949968682 modified "2023-09-27" @default.
- W2949968682 title "Scattering design : absorption enhancement andfrequency selective metasurfaces; Absorption enhancement and frequency selectivemetasurfaces" @default.
- W2949968682 hasPublicationYear "2018" @default.
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