Results 41 to 50 of about 66,629 (316)
Design of Multifunctional Tunable Metasurface Assisted by Elastic Substrate
Nanomaterials, 2022 Metasurfaces with both multifunctionality and tunability hold great application potential in next-generation optical devices. In this paper, we propose a stretchable metasurface composed of arrays of identical dielectric rectangular resonators embedded ...
Jing Li +6 more
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Manipulating light at distance by a metasurface using momentum transformation
, 2014 A momentum conservation approach is introduced to manipulate light at distance using metasurfaces. Given a specified field existing on one side of the metasurface and specified desired field transmitted from the opposite side, a general momentum boundary
Caloz, Christophe, Salem, Mohamed A.
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Planar immersion lens with metasurfaces [PDF]
, 2015 The solid immersion lens is a powerful optical tool that allows light entering material from air or vacuum to focus to a spot much smaller than the free-space wavelength. Conventionally, however, they rely on semispherical topographies and are non-planar
Fan, Shanhui +5 more
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Optics Express, 2022 We numerically study metasurfaces that incorporate electro-optic materials and show that they can achieve large amplitude and phase modulations across a distance that is a fraction of the operation wavelength. We show that the metasurfaces made of dielectric discs placed on a film of lithium niobate can exhibit three main types of resonances ...
Luyao Wang, Ilya Shadrivov
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Dielectric Resonator Metasurface for Dispersion Engineering
, 2016 We introduce a practical dielectric metasurface design for microwave frequencies. The metasurface is made of an array of dielectric resonators held together by dielectric connections thus avoiding the need of a mechanical support in the form of a ...
Achouri, Karim +4 more
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A Smart Metasurface for Electromagnetic Manipulation Based on Speech Recognition
Engineering, 2023 In this work, we propose and realize a smart metasurface for programming electromagnetic (EM) manipulations based on human speech recognition. The smart metasurface platform is composed of a digital coding metasurface, a speech-recognition module, a ...
Lin Bai +7 more
doaj +1 more source
, 2017 We demonstrate that a self-complementary checkerboard-like metasurface works as a broadband coherent perfect absorber (CPA) when symmetrically illuminated by two counter-propagating incident waves.
Kitano, Masao +3 more
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Luminescent hyperbolic metasurfaces [PDF]
Nature Communications, 2017 AbstractWhen engineered on scales much smaller than the operating wavelength, metal-semiconductor nanostructures exhibit properties unobtainable in nature. Namely, a uniaxial optical metamaterial described by a hyperbolic dispersion relation can simultaneously behave as a reflective metal and an absorptive or emissive semiconductor for electromagnetic ...
Smalley, JST +9 more
openaire +5 more sources
Cancer Diagnosis Using Terahertz-Graphene-Metasurface-Based Biosensor with Dual-Resonance Response
Nanomaterials, 2022 Owing to the outstanding physical properties of graphene, its biosensing applications implemented by the terahertz metasurface are widely concerned and studied.
Chunjian Tan +6 more
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Coherent optical control of polarization with a critical metasurface
, 2015 We describe the mechanism by which a metamaterial surface can act as an ideal phase-controlled rotatable linear polarizer. With equal-power linearly polarized beams incident on each side of the surface, varying the relative phase rotates the polarization
Chong, Y. D., Kang, Ming
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