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Advances in Metamaterials and Metasurface
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Advances in Metamaterials and Metasurface

A special issue of Materials (ISSN 1996-1944). This special issue belongs to the section "Materials Physics".

Deadline for manuscript submissions: closed (20 September 2023) | Viewed by 4867

Special Issue Editors

Prof. Dr. Cheng Huang

E-Mail Website
Guest Editor
State Key Laboratory of Optical Technologies On Nano-Fabrication and Micro-Engineering, Institute of Optics and Electronics, Chinese Academy of Sciences, Chengdu 610209, China
Interests: metasurface; metamaterial; infrared camouflage; electromagnetic radiation/scattering manipulation; flat electromagnetic device
Prof. Dr. Ting Xu

E-Mail Website
Guest Editor
College of Engineering and Applied Science, Nanjing University, Nanjing 210093, China
Interests: nanophotonics; surface plasma optics; artificial electromagnetic structural materials; micro / nano processing technology

Special Issue Information

Dear Colleagues,

Recently, metamaterials have generated significant interest due to their powerful capability for tailoring effective medium parameters. Due to the flexible design of sub-wavelength-scale meta-atoms and their arrangements, the effective medium parameters can be arbitrarily controlled and, thus, various exotic electromagnetic properties have been generated, such as negative refraction, perfect lensing, perfect absorption, and invisibility cloaking. Metasurfaces, as the 2D versions of metamaterials, have attracted more attention due to their advantages of lower profile, lower loss, and easy fabrication. More importantly, they provide a concise and efficient method for manipulating amplitude, phase, polarization, and propagation of electromagnetic waves. So far, metasurfaces have shown great promises for novel applications, and a variety of intriguing devices with the specific functionality having been reported in the microwave, terahertz, visible, and even acoustic frequencies. Especially, the latest developments of reconfigurable metasurfaces, coding metasurfaces, and even intelligent metasurfaces have further enriched their functionalities, and bring significant impact on modern electromagnetic and photonic systems, such as intelligent metadevices, vector light-field manipulation, high-performance photoelectric devices, etc. It is expected that the development of advanced metamaterials and metasurfaces will yield unlimited opportunities in the scientific field. This Special Issue aims to bring together the most recent advances associated with the latest techniques and methods for metamaterial/metasurface design. We encourage the submissions of original research articles, perspectives, opinion articles, and reviews that focus on, but are not limited to, the latest developments and achievements based on the newly emergent materials, structures, and physics, as well as their practical applications in engineering.

Prof. Dr. Cheng Huang
Prof. Dr. Ting Xu
Guest Editors

Manuscript Submission Information

Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All submissions that pass pre-check are peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 100 words) can be sent to the Editorial Office for announcement on this website.

Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Materials is an international peer-reviewed open access semimonthly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 2600 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

Keywords

  • metasurfaces/metamaterials
  • thermal metamaterials
  • reconfigurable metasurfaces/metamaterials
  • intelligent metasurface
  • optical metasurfaces/metamaterials
  • coding metamaterials
  • novel electromagnetic manipulation device
  • photoelectric modulation devices
  • vector-light field manipulation

Published Papers (4 papers)

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Research

14 pages, 8452 KiB  
Article
Research on Design Method of Multilayer Metamaterials Based on Stochastic Topology
by Zhipeng Xi, Xiaochi Lu, Tongsheng Shen, Chunrong Zou, Li Chen and Shaojun Guo
Materials 2023, 16(15), 5229; https://doi.org/10.3390/ma16155229 - 25 Jul 2023
Viewed by 804
Abstract
Metamaterials are usually designed using biomimetic technology based on natural biological characteristics or topology optimization based on prior knowledge. Although satisfactory results can be achieved to a certain extent, there are still many performance limitations. For overcoming the above limitations, this paper proposes [...] Read more.
Metamaterials are usually designed using biomimetic technology based on natural biological characteristics or topology optimization based on prior knowledge. Although satisfactory results can be achieved to a certain extent, there are still many performance limitations. For overcoming the above limitations, this paper proposes a rapid metamaterials design method based on the generation of random topological patterns. This method realizes the combined big data simulation and structure optimization of structure-electromagnetic properties, which makes up for the shortcomings of traditional design methods. The electromagnetic properties of the proposed metamaterials are verified by experiments. The reflection coefficient of the designed absorbing metamaterial unit is all lower than −15 dB over 12–16 GHz. Compared with the metal floor, the radar cross section (RCS) of the designed metamaterial is reduced by a minimum of 14.5 dB and a maximum of 27.6 dB over the operating band. The performance parameters of metamaterial obtained based on the random topology design method are consistent with the simulation design results, which further verifies the reliability of the algorithm in this paper. Full article
(This article belongs to the Special Issue Advances in Metamaterials and Metasurface)
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18 pages, 10546 KiB  
Article
Broadband Waterborne Multiphase Pentamode Metastructure with Simultaneous Wavefront Manipulation and Energy Absorption Capabilities
by Yi An, Han Zou and Aiguo Zhao
Materials 2023, 16(14), 5051; https://doi.org/10.3390/ma16145051 - 17 Jul 2023
Cited by 1 | Viewed by 863
Abstract
Acoustic metastructures are artificial structures which can manipulate the wavefront in sub-wavelength dimensions, and previously proposed acoustic metastructures have been mostly realized with single materials. An acoustic metastructure with composite structure is proposed for underwater acoustic stealth considering both wavefront manipulation and sound [...] Read more.
Acoustic metastructures are artificial structures which can manipulate the wavefront in sub-wavelength dimensions, and previously proposed acoustic metastructures have been mostly realized with single materials. An acoustic metastructure with composite structure is proposed for underwater acoustic stealth considering both wavefront manipulation and sound absorption. The unit cells of the metastructure are composed of a metallic supporting lattice, interconnecting polymer materials and mass balancing columns. With the gradual modulations of equivalent physical properties along the horizontal direction of metastructure, the incident acoustic wave is reflected to other directions. Meanwhile, the polymer material inside the unit cells will dissipate the acoustic wave energy due to inherent damping properties. With the simultaneous modulations of reflected wave direction and scattering acoustic amplitude, significant improvement of the underwater stealth effect is achieved. Compared with single-phase metastructure, the Far-Field Sound Pressure Level (FFSPL) of multiphase metastructure decreases by 4.82 dB within the frequency range of 3 kHz~30 kHz. The linearized mean stress for multiphase metastructure is only 1/3 of that of single-phase metastructure due to it having much thicker struts and much more uniform stress distribution under the same hydrostatic pressure. The proposed composite structure possesses potential applications due to its acceptable thickness (80 mm) and low equivalent density (1100 kg/m3). Full article
(This article belongs to the Special Issue Advances in Metamaterials and Metasurface)
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15 pages, 5347 KiB  
Article
Design of Tunable Broadband Graphene-Based Metasurface with Amplitude-Phase Modulation
by Huixia Jiang, Lili Sheng, Yumei Luo, Liang Meng and Weiping Cao
Materials 2023, 16(13), 4633; https://doi.org/10.3390/ma16134633 - 27 Jun 2023
Viewed by 1040
Abstract
Due to the growing scarcity of spectrum resources in the low-frequency band, the requirement of beam-reconfigurable antennas in the millimeter wave band is urgent. In this paper, a W-band graphene-based metasurface working in a broad bandwidth is proposed with reflective amplitude coding. Here, [...] Read more.
Due to the growing scarcity of spectrum resources in the low-frequency band, the requirement of beam-reconfigurable antennas in the millimeter wave band is urgent. In this paper, a W-band graphene-based metasurface working in a broad bandwidth is proposed with reflective amplitude coding. Here, graphene sheets play a dual role in radiating and regulating electromagnetic waves. By adjusting the Fermi levels of graphene, the reflective amplitude and phase of the metasurface can be modulated simultaneously, enabling multi-beam switching and beam deflection in far-field. The proposed metasurface achieves amplitude-phase modulation within a significantly wide bandwidth which covers 75–91.5 GHz and 99.3–115 GHz. By optimizing the coding patterns, the proposed graphene-based metasurfaces are able to not only realize 2-D beam steering, but also achieve beam switching from single beam to four beams at 87 GHz. The proposed design provides a novel solution for the flexible manipulation of millimeter waves, which can be applied to various fields such as vehicle radar, satellite communication, 6G wireless communication, and beyond. Full article
(This article belongs to the Special Issue Advances in Metamaterials and Metasurface)
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15 pages, 4218 KiB  
Article
Asymmetric Cross Metasurfaces with Multiple Resonances Governed by Bound States in the Continuum
by Hongjie Fan, Jing Li, Yuhang Sun, Xueyu Wang, Tiesheng Wu and Yumin Liu
Materials 2023, 16(6), 2227; https://doi.org/10.3390/ma16062227 - 10 Mar 2023
Cited by 3 | Viewed by 1638
Abstract
The bound state in the continuum (BIC) has paved a new way to achieve excellent localization of the resonant mode coexisting with a continuous spectrum in the metasurface. Here, we propose an all-dielectric metasurface consisting of periodic pairs of asymmetric crosses that supports [...] Read more.
The bound state in the continuum (BIC) has paved a new way to achieve excellent localization of the resonant mode coexisting with a continuous spectrum in the metasurface. Here, we propose an all-dielectric metasurface consisting of periodic pairs of asymmetric crosses that supports multiple Fano resonances. Due to the sufficient degrees of freedom in the unit cell, we displaced the vertical bars horizontally to introduce in-plane perturbation, doubling the unit cell structure. Dimerization directly resulted in the folding of the Brillouin zone in k space and transformed the BIC modes into quasi-BIC resonances. Then, simultaneous in-plane symmetry breaking was introduced in both the x and y directions to excite two more resonances. The physical mechanisms of these BIC modes were investigated by multipole decomposition of the scattering cross section and electromagnetic near-field analysis, confirming that they are governed by toroidal dipole (TD) modes and magnetic dipole (MD) modes. We also investigated the flexible tunability and evaluated the sensing performance of our proposed metasurface. Our work is promising for different applications requiring stable and tunable resonances, such as optical switching and biomolecule sensing. Full article
(This article belongs to the Special Issue Advances in Metamaterials and Metasurface)
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