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Open AccessArticle

Enhancing Spectral Reflection through Controlled Phase Distribution Using Doped Polar-Dielectric Metasurfaces

Faculty of Engineering and Natural Science, Sabanci University, Istanbul 34956, Turkey
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Materials 2020, 13(9), 2007; https://doi.org/10.3390/ma13092007
Received: 20 March 2020 / Revised: 18 April 2020 / Accepted: 21 April 2020 / Published: 25 April 2020
(This article belongs to the Special Issue Design and Development of Plasmonic Functional Materials)
Controlling the phase distribution of wavefronts using optical metasurfaces has led to interesting optical properties and applications. Here, we explore the control of phase distribution through polar-dielectric metasurfaces composed of doped SiC nanosphere arrays. We investigate the impact of doping concentration on the optical properties of SiC nano-spheres. Our results indicate that increasing the doping of SiC nanoparticles influenced electric dipolar resonances, whereas it did not change the dipolar resonances. Using this concept, we numerically studied the extension of this idea to form metasurface arrays of single, dimer and linear trimers of the doped SiC nano-spheres. Using different doping schemes, we studied the improvement of the reflectivity at frequencies greater than the longitudinal optical phonon frequency. View Full-Text
Keywords: reststrahlen band; plasmon polariton; phonon polariton; carrier concentration; localized resonance; reflection bandwidth reststrahlen band; plasmon polariton; phonon polariton; carrier concentration; localized resonance; reflection bandwidth
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Janipour, M.; Şendur, K. Enhancing Spectral Reflection through Controlled Phase Distribution Using Doped Polar-Dielectric Metasurfaces. Materials 2020, 13, 2007.

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