Recent advances in strongly resonant and gradient all-dielectric metasurfaces

Zografopoulos, Dimitrios C.; Tsilipakos, Odysseas

doi:10.1039/d2ma00910b

Cited by 30 publications

(14 citation statements)

References 191 publications

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“…A metasurface is a quasi-2D artificially designed interface with tailored properties, typically achieved by adding a structuring in the wavelength scale or smaller 9 . Metasurface engineered properties, which has been proved to be attainable over an ultra-wide spectral range 10 , depend on materials, position, size, density, shape, and orientation of the structuring, which can be controlled by the designer to obtain a specific electromagnetic response that cannot be achieved by means of natural interfaces 11,12 . The action that such meta-structures imparts on an electromagnetic wave interacting with them is expressed in a strong control of both their "simple" properties (such as amplitude, phase and polarization) and their "exotic" ones (such as orbital properties, topological phase-Pancharatnam-Berry phase-and orbital momentum [13][14][15][16] ).…”

Section: Design Of Optically Transparent Metasurfaces Based On Cvd Gr...mentioning

confidence: 99%

Design of optically transparent metasurfaces based on CVD graphene for mmWave applications

Magno

Caramia

Bianco

et al. 2023

Sci Rep

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We propose and numerically investigate a smart, optically transparent digital metasurface reflective in the mmWave range, based on CVD graphene programmable elements. For both TM and TE polarizations, we detail the optimization of the unit cells, designed to exhibit two distinct states that correspond to those of binary encoding. The whole metasurface encoding can be customized to provide different electromagnetic functions, such as wide-band beam splitting at a controlled angle and reduction of the Radar Cross Section. Optically transparent metasurfaces could be integrated and exploited in windows and transparent surfaces in future Beyond-5G and 6G ecosystems.

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Section: Design Of Optically Transparent Metasurfaces Based On Cvd Gr...mentioning

confidence: 99%

Design of optically transparent metasurfaces based on CVD graphene for mmWave applications

Magno

Caramia

Bianco

et al. 2023

Sci Rep

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“…However, there has been growing interest in emerging applications of metasurfaces such as quantum emission, computing, wireless communication, and biomedical applications, as shown in a review by C W Qiu et al [73]. The exploitation of novel optical phenomena such as quasi-bound states in the continuum resonances in metasurfaces for applications such as biosensing, emission, and nonlinear optics was reviewed by Dimitrios et al [74]. Additionally, the review mentions advances in resonant and non-resonant (geometric or Panchratnam Berry phase shift) metasurfaces for lensing, holography, and beam steering applications, along with brief mentions of the reconfigurability aspect in dynamic metasurfaces.…”

Section: Previous Reviews and Their Coveragementioning

confidence: 99%

Recent developments in Chalcogenide phase change material-based nanophotonics

Tripathi,

Vyas,

Kumar

et al. 2023

Nanotechnology

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There is now a deep interest in actively reconfigurable nanophotonics as they will enable the next generation of optical devices. Of the various alternatives being explored for reconfigurable nanophotonics, Chalcogenide phase change materials (PCMs) are considered highly promising owing to the nonvolatile nature of their phase change. Chalcogenide PCM nanophotonics can be broadly classified into integrated photonics (with guided wave light propagation) and Meta-optics (with free space light propagation). Despite some early comprehensive reviews, the pace of development in the last few years has shown the need for a topical review. Our comprehensive review covers recent progress on nanophotonic architectures, tuning mechanisms, and functionalities in tunable PCM Chalcogenides. In terms of integrated photonics, we identify novel PCM nanoantenna geometries, novel material utilization, the use of nanostructured waveguides, and sophisticated excitation pulsing schemes. On the meta-optics front, the breadth of functionalities has expanded, enabled by exploring design aspects for better performance. The review identifies immediate, and intermediate-term challenges and opportunities in (1) the development of novel chalcogenide PCM, (2) advance in tuning mechanism, and (3) formal inverse design methods, including machine learning augmented inverse design, and provides perspectives on these aspects. The topical review will interest researchers in further advancing this rapidly growing subfield of nanophotonics.

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“…Taking all of the above into account, metasurfaces may be proposed for such an application. Metasurfaces are defined as man-made, surfaces which exhibit substantial electromagnetic properties, that cannot be found in natural materials, such as perfect absorption, negative or large positive refractive index, magnetism at high frequencies, etc. , The basic component of a metasurface is called the meta-atom, which is of specific shape and dimensions. The appropriate arrangement of similar meta-atoms in the space is tightly correlated to the electromagnetic response of the metasurface.…”

Section: Introductionmentioning

confidence: 99%

Engraved Split-Ring Resonators as Potential Microwave Sensors for Olive Oil Quality Control

Viskadourakis,

Theodosi,

Katsara

et al. 2024

ACS Appl. Electron. Mater.

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In this study, microwave complementary split-ring resonators are explored regarding their sensing capability against olive oil adulteration. In particular, millimeter-scale complementary split-ring resonators were developed employing the computer numerical control method, in combination with a home-built mechanical engraver. Their electromagnetic behavior was comprehensively studied, both experimentally and theoretically, in the frequency range of 2–9 GHz. Furthermore, their electromagnetic response was investigated in the presence of different types of edible oils, such as virgin olive oil, corn oil, and soybean oil. Both experimental results and theoretical simulations clearly reveal the distinct response of the fabricated complementary resonators to different oil types. Even more, they exhibit a significant response in oil mixtures, enabling the detection of possible adulteration in olive oil. Consequently, it becomes evident that mechanically engraved microwave complementary split-ring resonators can be efficiently realized as potential sensors for olive oil quality control.

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Recent advances in strongly resonant and gradient all-dielectric metasurfaces

Abstract: All-dielectric metasurfaces have been intensively researched as a low-loss, flat-optics platform for the advanced manipulation of electromagnetic wave propagation. Among the numerous metasurface-enabled functionalities, particular focus has been recently placed...

Cited by 30 publications

References 191 publications

Design of optically transparent metasurfaces based on CVD graphene for mmWave applications

Design of optically transparent metasurfaces based on CVD graphene for mmWave applications

Recent developments in Chalcogenide phase change material-based nanophotonics

Engraved Split-Ring Resonators as Potential Microwave Sensors for Olive Oil Quality Control

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