Hybrid plasmonic metasurfaces

Kang, Eul Son; Chaharsoughi, Mina Shiran; Rossi, Stefano; Jonsson, Magnus P.

doi:10.1063/1.5116885

Cited by 23 publications

(26 citation statements)

References 230 publications

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“…Interfaces constructed from such structures have been extensively studied for gigahertz to terahertz detection [ 6 ], attenuation [ 7 ], and polarization control [ 8 ]. For frequencies drifting away from resonance, the metamaterials were responsible for the complete control of electromagnetic fields [ 9 , 10 , 11 , 12 ], together with a full series of new, exotic optical phenomena, such as regional cloaking [ 13 ], generalized reflection and refraction [ 14 , 15 , 16 ], polarization phase control [ 17 , 18 ], and a new class of exotic properties based on hyperbolic-tensor properties instead of conventional ellipsoid ones [ 19 , 20 ]. Real-time adjustment of the resonant response is made possible by the use of materials that are responsive to external fields, such as liquid crystal composites [ 21 , 22 ] layered on top of the unit cell, or the direct use piezoelectric unit cell components [ 23 ].…”

Section: Introductionmentioning

confidence: 99%

Polyvinylidene Fluoride-Based Metasurface for High-Quality Active Switching and Spectrum Shaping in the Terahertz G-Band

Dănilă

2021

Polymers

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We report theoretical investigations performed in the terahertz G-band, in the 228–232 GHz spectral window for a piezoelectrically-responsive ring-cone element metasurface composed of polyvinylidene fluoride (PVDF)/Silicon and PVDF/Silica glass. The choosing of this spectral window is motivated by a multitude of applications in terahertz detection and terahertz imaging, that commonly make use of this band. The uniqueness of the envisioned architecture resides in the combination between the readily-available polyvinylidene fluoride polymer and silicon/silica glass substrates, together with the introduction of an extra degree of freedom, in the form of a ring-cone architecture , and the active control of the geometric sizes through the longitudinal piezoelectric effect exhibited by the polymer. The spectral response of the metasurface is dependent on the combination between the polymer elements and the substrate, and ranges from near-zero absorption switching to a resonant behavior and significant absorption. The interaction between the electromagnetic field and the polymer-based metasurface also modifies the phase of the reflected and transmitted waves over a full 2π range, permitting complete control of the electric field polarization. Moreover, we take advantage of the longitudinal piezoelectric effect of PVDF and analyze the spectrum shaping capability of the polymer-based metasurface. Our analysis highlights the capability of the proposed architecture to achieve complete electric field polarization control, near-zero optical switching and resonant behavior, depending on the geometries and sizes of the architecture elements resulting from construction considerations and from the externally applied voltages through the piezoelectric effect.

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Section: Introductionmentioning

confidence: 99%

Polyvinylidene Fluoride-Based Metasurface for High-Quality Active Switching and Spectrum Shaping in the Terahertz G-Band

Dănilă

2021

Polymers

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“…where D is the irradiance of the incident light (power per unit area). The generated heat can also be separated into the heat power density z({) inside the nanoparticle as: [66,67]…”

Section: Physics Of Plasmonic Heatingmentioning

confidence: 99%

Hybrid Plasmonics for Energy Harvesting and Sensing of Radiation and Heat

Chaharsoughi

2020

Linköping Studies in Science and Technology. Dissertations

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“…The almost limitless possibilities of material combinations, as well as sizes and geometries allow “artificial atoms” to control any parameter of light in all spectral ranges. More recently, versions of hybrid [ 35 , 36 , 37 , 38 ] and all-dielectric [ 39 , 40 , 41 ] metasurfaces have been proposed, with superior qualities in terms of wave front control, transmission coefficient, and cross-polarization. Furthermore, when combined with soft materials such as liquid crystals, on-demand external control of the metacell can be obtained, resulting in addressable absorbers and switches [ 42 , 43 ].…”

Section: Introductionmentioning

confidence: 99%

Bifunctional Metamaterials Using Spatial Phase Gradient Architectures: Generalized Reflection and Refraction Considerations

Dănilă

Mănăilă-Maximean

2021

Materials

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We report the possibility of achieving normal-incidence transmission at non-normal incidence angles using thin interfaces made of metasurface structures with an appropriately-designed positive spatial phase distributions. The reported effect represents a consequence of generalized reflection and refraction, which, although having been studied for discovering exotic effects such as negative refraction, to the best of our knowledge fails to address normal incidence conditions in positive phase distribution and its underlying consequences. Normal-incidence conditions can be angle-tuned by modifying the vales of the phase distribution gradients. Furthermore, for configurations around the normal-incidence angles, the metasurface will exhibit a bifunctional behavior—either divergent or convergent. All these properties are essential for applications such as optical guiding in integrated optics, wave front sensing devices, polarization controllers, wave front-to-polarization converters, holographic sensors, and spatially-resolved polarization measurement.

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Hybrid plasmonic metasurfaces

Cited by 23 publications

References 230 publications

Polyvinylidene Fluoride-Based Metasurface for High-Quality Active Switching and Spectrum Shaping in the Terahertz G-Band

Polyvinylidene Fluoride-Based Metasurface for High-Quality Active Switching and Spectrum Shaping in the Terahertz G-Band

Hybrid Plasmonics for Energy Harvesting and Sensing of Radiation and Heat

Bifunctional Metamaterials Using Spatial Phase Gradient Architectures: Generalized Reflection and Refraction Considerations

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