Flexible Metamaterial Electronics

Advanced Materials, Journal Year: 2022, Volume and Issue: 34(52)

Published: March 24, 2022

Abstract Over the last decade, extensive efforts have been made on utilizing advanced materials and structures to improve properties functionalities of flexible electronics. While conventional ways are approaching their natural limits, a revolutionary strategy, namely metamaterials, is emerging toward engineering structural break existing fetters. Metamaterials exhibit supernatural physical behaviors, in aspects mechanical, optical, thermal, acoustic, electronic that inaccessible materials, such as tunable stiffness or Poisson's ratio, manipulating electromagnetic elastic waves, topological programmable morphability. These salient merits motivate metamaterials brand‐new research direction inspired innovative applications Here, groundbreaking interdisciplinary field first coined “flexible metamaterial electronics,” focusing enhancing innovating electronics via design metamaterials. Herein, latest progress trends this infant reviewed while highlighting potential value. First, brief overview starts with introducing combination Then, developed discussed, self‐adaptive deformability, ultrahigh sensitivity, multidisciplinary functionality, followed by discussion prospects. Finally, challenges opportunities facing advance cutting‐edge summarized.

Language: Английский

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Reconfigurable metasurfaces towards commercial success

Nature Photonics, Journal Year: 2022, Volume and Issue: 17(1), P. 48 - 58

Published: Dec. 22, 2022

Language: Английский

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Metamaterials and Metasurfaces: A Review from the Perspectives of Materials, Mechanisms and Advanced Metadevices

Nanomaterials, Journal Year: 2022, Volume and Issue: 12(6), P. 1027 - 1027

Published: March 21, 2022

Throughout human history, the control of light, electricity and heat has evolved to become cornerstone various innovations developments in electrical electromagnetic technologies. Wireless communications, laser computer technologies have all been achieved by altering way light other energy forms act naturally how manage them a controlled manner. At nanoscale, heat, matured nanostructure fabrication techniques developed last two decades, wide range groundbreaking processes achieved. Photonic crystals, nanolithography, plasmonics phenomena nanoparticle manipulation are main areas where these applied successfully led an emergent material sciences branch known as metamaterials. Metamaterials functional development strategies focused on structures matter itself, which unconventional unique properties through light-and more general picture waves-in widespread Metamaterial's nanostructures precise shape, geometry, size, direction arrangement. Such configurations impacting waves generate novel that difficult or even impossible obtain with natural materials. This review discusses metamaterials metasurfaces from perspectives materials, mechanisms advanced metadevices depth, aim serve solid reference for future works this exciting rapidly emerging topic.

Language: Английский

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Design of Acoustic/Elastic Phase Gradient Metasurfaces: Principles, Functional Elements, Tunability, and Coding

Applied Mechanics Reviews, Journal Year: 2022, Volume and Issue: 74(2)

Published: March 1, 2022

Abstract Acoustic/elastic metasurfaces as a kind of two-dimensional metamaterials are subwavelength thickness and show remarkable ability acoustic/elastic wave manipulation. They have potential applications in various fields such acoustic imaging, communications, cloaking, camouflage, vibration/noise control, energy harvesting, nondestructive testing. In this review, we mainly summarize recent developments phase gradient metasurfaces, including design principles, functional elements, field manipulation with applications, tunable well the emerging digital coding metasurfaces. At last, outline future research directions field.

Language: Английский

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Metamaterial Absorbers: From Tunable Surface to Structural Transformation

Advanced Materials, Journal Year: 2022, Volume and Issue: 34(38)

Published: May 23, 2022

Since the first demonstration, remarkable progress has been made in theoretical analysis, structural design, numerical simulation, and potential applications of metamaterial absorbers (MAs). With continuous advancement novel materials creative designs, absorption MAs is significantly improved over a wide frequency spectrum from microwaves to optical regime. Further, integration active elements into MA design allows dynamical manipulation electromagnetic waves, opening new platform push breakthroughs metadevices. In last several years, numerous efforts have devoted exploring innovative approaches for incorporating tunability MAs, which highly desirable because progressively increasing demand on designing versatile Here, comprehensive systematical overview with adaptive on-demand manner presented, highlighting unique strategies precisely control response. addition mainstream method by manipulating periodic patterns, two additional approaches, including tailoring dielectric spacer transforming overall structure are called back. Following this, key parameters, such as operating frequency, relative tuning range, switching speed summarized compared guide optimum design. Finally, opportunities development discussed.

Language: Английский

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Optical metasurfaces towards multifunctionality and tunability

Nanophotonics, Journal Year: 2022, Volume and Issue: 11(9), P. 1761 - 1781

Published: Jan. 4, 2022

Abstract Optical metasurfaces is a rapidly developing research field driven by its exceptional applications for creating easy-to-integrate ultrathin planar optical devices. The tight confinement of the local electromagnetic fields in resonant photonic nanostructures can boost many effects and offer novel opportunities nanoscale control light–matter interactions. However, once structure-only are fabricated, their functions will be fixed, which limits it to make breakthroughs practical applications. Recently, persistent efforts have led functional multiplexing. Besides, dynamic light manipulation based on has been demonstrated, providing footing ground arbitrary full space-time dimensions. Here, we review latest progress multifunctional tunable metasurfaces. Firstly, introduce evolution then present concepts, basic principles, design methods metasurface. Then with more details, discuss how realize both multifunctionality tunability. Finally, also foresee various future directions including innovative methods, new material platforms, metadevices.

Language: Английский

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Graphene biosensor design based on glass substrate for forensic detection of illicit drugs

Optical and Quantum Electronics, Journal Year: 2024, Volume and Issue: 56(5)

Published: March 29, 2024

Language: Английский

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Reconfigurable flexible metasurfaces: from fundamentals towards biomedical applications

PhotoniX, Journal Year: 2024, Volume and Issue: 5(1)

Published: Jan. 22, 2024

Abstract Metamaterials and metasurfaces of artificial micro-/nano- structures functioning from microwave, terahertz, to infrared regime have enabled numerous applications bioimaging, cancer detection immunoassay on-body health monitoring systems in the past few decades. Recently, trend turning metasurface devices flexible stretchable has arisen that flexibility stretchability not only makes device more biocompatible wearable, but also provides unique control manipulation structural geometrical reconfiguration a creative manner, resulting an extraordinary tunability for biomedical sensing purposes. In this Review, we summarize recent advances design fabrication techniques reconfigurable their date thereof, put forward perspective future development metamaterials metasurfaces.

Language: Английский

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Focus control of wide-angle metalens based on digitally encoded metasurface

Opto-Electronic Advances, Journal Year: 2024, Volume and Issue: 7(8), P. 240095 - 240095

Published: Jan. 1, 2024

Based on the principle of super-symmetric lens with quadratic phase gradient transformation, combined digital coding metasurface, we propose a wide-angle coded metalens for focusing control in two-dimensional space. This achieves focus shift x-direction by changing oblique incidence angle incident wave, and y-direction combining convolution digitally metasurface to achieve flexible light plane. The unit is mainly composed three-layer metal structure two layers medium, transmission obtained middle layer structure, which turn obtains required distribution metalens. design realizes function large viewing at x-polarized incidence, control. Experimentally, prepared designed tested experimental results are good agreement results.

Language: Английский

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Varifocal Metalens Using Tunable and Ultralow‐loss Dielectrics

Advanced Science, Journal Year: 2023, Volume and Issue: 10(6)

Published: Jan. 3, 2023

Abstract The field of flat optics that uses nanostructured, so‐called metasurfaces, has seen remarkable progress over the last decade. Chalcogenide phase‐change materials (PCMs) offer a promising platform for realizing reconfigurable as their optical properties can be reversibly tuned. Yet, demonstrations metalenses to date have employed material compositions such Ge 2 Sb Te 5 , which show high absorption in visible near‐IR wavelengths particularly crystalline state, limiting applicability. Here, by using low‐loss PCM Se 3 first time, active polarization‐insensitive at with comparable efficiencies both states are shown. An metalens tunable focusing intensity 95% and efficiency 23% is demonstrated. A varifocal then demonstrated focal length from 41 123 µm (5.7% 3%). ultralow‐loss nature introduces exciting new possibilities communications, multi‐depth imaging, beam steering, routing, holography.

Language: Английский

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