Prospects of Huygens’ Metasurfaces for Antenna Applications

Eleftheriades, George V.; Kim, Minseok; Ataloglou, Vasileios G.; Dorrah, Ayman H.

doi:10.1016/j.eng.2021.05.011

Cited by 17 publications

(4 citation statements)

References 27 publications

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“…The paper [ 171 ] presents a Huygens’ metasurface-based design of a beam deflector, a metalens, and a metasurface axicon [ 172 ] (lens with a conical surface, used to transform Gaussian beam into a Bessel-like one with an annular far field beam distribution, which is utilized in optical trapping). Huygens’ metasurfaces have also been proposed for the use in antenna applications [ 173 ].…”

Section: Membrane Metamaterialsmentioning

confidence: 99%

Bio-Inspired Nanomembranes as Building Blocks for Nanophotonics, Plasmonics and Metamaterials

2022

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Nanomembranes are the most widespread building block of life, as they encompass cell and organelle walls. Their synthetic counterparts can be described as freestanding or free-floating structures thinner than 100 nm, down to monatomic/monomolecular thickness and with giant lateral aspect ratios. The structural confinement to quasi-2D sheets causes a multitude of unexpected and often counterintuitive properties. This has resulted in synthetic nanomembranes transiting from a mere scientific curiosity to a position where novel applications are emerging at an ever-accelerating pace. Among wide fields where their use has proven itself most fruitful are nano-optics and nanophotonics. However, the authors are unaware of a review covering the nanomembrane use in these important fields. Here, we present an attempt to survey the state of the art of nanomembranes in nanophotonics, including photonic crystals, plasmonics, metasurfaces, and nanoantennas, with an accent on some advancements that appeared within the last few years. Unlimited by the Nature toolbox, we can utilize a practically infinite number of available materials and methods and reach numerous properties not met in biological membranes. Thus, nanomembranes in nano-optics can be described as real metastructures, exceeding the known materials and opening pathways to a wide variety of novel functionalities.

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Section: Membrane Metamaterialsmentioning

confidence: 99%

Bio-Inspired Nanomembranes as Building Blocks for Nanophotonics, Plasmonics and Metamaterials

2022

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“…Metasurfaces are two-dimensional metamaterials consisting of periodic arrays of subwavelength artificial units that offer the advantages of ultrathin thickness, lightweight, design flexibility, and ease of fabrication. − In particular, metasurfaces have the ability to arbitrarily manipulate the electromagnetic wave amplitude, phase, frequency, and polarization state. Examples of metasurfaces include absorbers, − antennas, − polarization converters, , beam shapers, − holographic imaging, − and other interesting applications. − These conventional metasurfaces are mostly static; in other words, their electrical, magnetic, and magnetoelectric responses are fixed by design, and once manufactured, their functions cannot be tuned to meet the requirements of increasingly complex applications. Hence, tunable metasurfaces provide a versatile platform for the dynamic manipulation of electromagnetic waves. − Various developments have been made using lumped elements (e.g., varactors and PIN diodes), − actively controlled materials (e.g., graphene, − ferroelectric materials, liquid crystals, − and phase change materials − ), and mechanically tunable metasurfaces. − …”

Section: Introductionmentioning

confidence: 99%

Metasurface with Electrically Tunable Microwave Transmission Amplitude and Broadband High Optical Transparency

Xia

Zhang

et al. 2023

ACS Appl. Mater. Interfaces

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Metasurfaces with tunable microwave transmission amplitude and broadband high optical transparency hold great promise for the next generation of optically transparent and smart electromagnetic transmission devices. In this study, a novel and electrically tunable metasurface with high optical transparency in the visible-infrared broadband is proposed and fabricated by integrating meshed electric-LC resonators and patterned VO 2 . Simulations and experiments demonstrate that the designed metasurface has a normalized transmittance greater than 88% over a wide wavelength range of 380−5000 nm, and the transmission amplitude can be continuously tuned from −1.27 to −15.38 dB at 10 GHz under current excitation, indicating significantly limited passband loss and strong electromagnetic shielding capability in the on and off cases, respectively. This study provides a simple, practical, and feasible method for optically transparent metasurfaces with electrically tunable microwave amplitude, paving the way for the application of VO 2 in multiple fields such as intelligent optical windows, smart radomes, microwave communications, and optically transparent electromagnetic stealth.

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“…These properties are not due to their chemical composition, but rather to their geometrical configuration. [1][2][3] They have been attracting increasing attention in recent years for their potential applications in a wide range of fields, including sound absorption, [4] optical components, heat insulation, [5] semiconductor devices, electromagnetic devices, [6] antenna applications, [7] and wireless communications. [8] Auxetic materials are types of mechanical metamaterials that exhibit a counterintuitive deformation behavior.…”

Section: Introductionmentioning

confidence: 99%

Reinforcement of 3D‐Printed Re‐Entrant Structures using Additional Supports under Three‐Point Bending, Experimental and Numerical Analyses

Zahed,

Ardeshiri Jouneghani,

Safarabadi

2023

Adv Eng Mater

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Because of the significant effect of geometry on the mechanical properties of auxetic structures, this work focuses on enhancing the re‐entrant hexagonal honeycomb properties, as an auxetic cellular structure with widespread use, by modifying its unit cell’s geometry. In this study, six novel structures with additional struts added as supports to the structure are designed in order to improve the specific energy absorption capacity and flexural modulus. The results reveal that adding supports significantly increases the maximum force tolerated by the structure in the same undergone displacement as the conventional re‐entrant. Furthermore, the findings indicate that honeycombs with concave curved supports outperform conventional re‐entrant honeycombs, showing a significant enhancement in flexural modulus (Ef) by approximately 282%, energy absorption (EA), and specific energy absorption (SEA) by over 297%. Moreover, angle support structures demonstrate outstanding outcomes compared to simple straight supports and single support structures. Additionally, a parametric study is carried out using the validated finite element model to analyze the influence of the supports’ thickness and radius as well as the distance between the middle of the unit cell and the support(L3) in honeycombs with concave curved supports and the β angle of angle supports in the double angle support structures.This article is protected by copyright. All rights reserved.

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Prospects of Huygens’ Metasurfaces for Antenna Applications

Cited by 17 publications

References 27 publications

Bio-Inspired Nanomembranes as Building Blocks for Nanophotonics, Plasmonics and Metamaterials

Bio-Inspired Nanomembranes as Building Blocks for Nanophotonics, Plasmonics and Metamaterials

Metasurface with Electrically Tunable Microwave Transmission Amplitude and Broadband High Optical Transparency

Reinforcement of 3D‐Printed Re‐Entrant Structures using Additional Supports under Three‐Point Bending, Experimental and Numerical Analyses

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