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Micromachines
Special Issues
Metasurfaces: Design, Fabrication and Applications
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Metasurfaces: Design, Fabrication and Applications

A special issue of Micromachines (ISSN 2072-666X). This special issue belongs to the section "A：Physics".

Deadline for manuscript submissions: closed (31 December 2023) | Viewed by 4551

Special Issue Editors

Dr. Shikai Deng

E-Mail Website
Guest Editor
Shanghai Institute of Microsystem and Information Technology, Chinese Academy of Sciences, Shanghai 200050, China
Interests: nanofabrication; plasmonics; metasurface
Dr. Rui Ma

E-Mail Website
Guest Editor
Shanghai Institute of Microsystem and Information Technology, Chinese Academy of Sciences, Shanghai 200050, China
Interests: plasmonics; metasurfaces; 2D materials; nonlinear optics
Dr. Lei Chen

E-Mail Website
Guest Editor
State Key Laboratory of Information Photonics and Optical Communications, Beijing University of Posts and Telecommunications, Beijing 100876, China
Interests: topological photonics; plasmonics; metasurface

Special Issue Information

Dear Colleagues,

Metasurfaces, artificial structures consisting of periodic sub-wavelength units, offer versatile platforms for light control and intrigue various novel phenomena and applications in physics, material science, chemistry, biology, and energy. Compared to conventional optics that rely on light refraction, reflection, and diffraction, metasurfaces control the local phase and intensity of electromagnetic waves at the unit level, exhibiting unprecedentedly high degrees of freedom for tailoring optical properties. Metasurfaces not only introduce revolutions of optical elements but also provide unprecedented opportunities for micro-/nano-cavities for light–matter interactions, which are essential for the development of electronic–photonic integrated circuits and quantum information devices. Notably, the thriving study of metasurfaces is building on the remarkable progress of nanophotonic simulation and nanofabrication techniques. In this Special Issue, we would like to cover the new design theory and methods of metasurfaces, the development of nanofabrication strategies to realize targeted nanostructures and nanopatterns, and the promising applications based on the metasurfaces. For this Special Issue, we aim to collect the top research and prospects for fundamentally understanding, fabricating, engineering, and developing novel applications of metasurfaces and stimulate new ideas and directions in the related fields.

Dr. Shikai Deng
Dr. Rui Ma
Dr. Lei Chen
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. Micromachines is an international peer-reviewed open access monthly 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
  • nanofabrication
  • nano-optical simulation
  • nanopatterning
  • light–matter interactions

Published Papers (3 papers)

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Research

15 pages, 9812 KiB  
Article
Graphene-Enabled Tunable Phase Gradient Metasurface for Broadband Dispersion Manipulation of Terahertz Wave
by Yin Zhang, Yijun Feng and Junming Zhao
Micromachines 2023, 14(11), 2006; https://doi.org/10.3390/mi14112006 - 28 Oct 2023
Cited by 3 | Viewed by 947
Abstract
With the increasing demand for the miniaturization and flexibility of optical devices, graphene-based metasurfaces have emerged as a promising ideal design platform for realizing planar and tunable electromagnetic or optical devices. In this paper, we propose a tunable metasurface with low-dispersion phase gradient [...] Read more.
With the increasing demand for the miniaturization and flexibility of optical devices, graphene-based metasurfaces have emerged as a promising ideal design platform for realizing planar and tunable electromagnetic or optical devices. In this paper, we propose a tunable metasurface with low-dispersion phase gradient characteristics that is composed of an array of double-layer graphene ribbons sandwiched with a thin insulating layer and a polymer substrate layer with a gold ground plane. As two typical proof-of-concept examples, metasurfaces act as a planar prism and a planar lens, respectively, and the corresponding performances of tunable broadband dispersion are demonstrated through full-wave simulation experiments. By changing the Fermi level of each graphene ribbon individually to introduce abrupt phase shifts along the metasurface, the broadband continuous dispersion effect of abnormal reflection and beam focusing is achieved within a terahertz (THz) frequency region from 3.0 THz to 4.0 THz, and the dispersion results can be freely regulated by reconfiguring the sequence of Fermi levels via the bias voltage. The presented graphene metasurface provides an avenue for the dispersion manipulation of a broadband terahertz wave and may have great prospects in the fields of optics, imaging, and wireless communication. Full article
(This article belongs to the Special Issue Metasurfaces: Design, Fabrication and Applications)
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12 pages, 5009 KiB  
Article
A Low-Cost Multibeam Switching Antenna Using Reconfigurable Hybrid Metasurface for Beamforming Applications
by Lili Sheng, Yumei Luo, Gangxin Ning, Liang Meng and Weiping Cao
Micromachines 2023, 14(8), 1631; https://doi.org/10.3390/mi14081631 - 18 Aug 2023
Viewed by 985
Abstract
In this paper, we proposed a multibeam switching antenna based on a low-cost reconfigurable hybrid metasurface applied for beamforming systems. The antenna consists of two parts: a microstrip feed antenna and a transmission hybrid metasurface. The latter is composed of three types of [...] Read more.
In this paper, we proposed a multibeam switching antenna based on a low-cost reconfigurable hybrid metasurface applied for beamforming systems. The antenna consists of two parts: a microstrip feed antenna and a transmission hybrid metasurface. The latter is composed of three types of units with different amplitude and phase responses to electromagnetic waves so as to control the beams of the feed antenna. Sixteen PIN diodes are arranged in the metasurface with a simple bias network. When two different direct-current voltages are applied to the PIN diodes, the antenna can dynamically switch between two beams and four beams. For demonstration, the proposed antenna is fabricated, and the measured results show that the antenna operates at 9.07–9.42 GHz (−10 dB bandwidth) with a total size of 1.80λ0 × 1.52λ0 × 0.22λ0 (λ0 corresponds to the wavelength of 9.28 GHz in free space). With the merits of a compact structure, low cost and good radiation performance, the proposed design is suitable for beamforming applications. Full article
(This article belongs to the Special Issue Metasurfaces: Design, Fabrication and Applications)
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26 pages, 7162 KiB  
Article
Metasurfaces and Blinking Jamming: Convergent Study, Comparative Analysis, and Challenges
by Rafael Gonçalves Licursi de Mello
Micromachines 2023, 14(7), 1405; https://doi.org/10.3390/mi14071405 - 11 Jul 2023
Viewed by 2087
Abstract
Blinking jamming is an active self-screening technique performed by at least two aircraft to tackle monopulse radars and all complexity related thereto. Nowadays, the technique can be performed with digital radiofrequency memories (DRFMs), which are cumbersome, complex, expensive, need a dedicated compartment and [...] Read more.
Blinking jamming is an active self-screening technique performed by at least two aircraft to tackle monopulse radars and all complexity related thereto. Nowadays, the technique can be performed with digital radiofrequency memories (DRFMs), which are cumbersome, complex, expensive, need a dedicated compartment and antenna, and introduce spurs in the signals. In this paper, we propose an alternative to the implementation of blinking jamming with DRFMs, namely with reconfigurable metasurfaces. By covering the aircraft parts that most contribute to the radar cross-section (RCS), reconfigurable metasurfaces can interchangeably absorb or amplify impinging waves, making the aircraft ‘blink’ from the radar perspective. To validate the feasibility, simulations accounting for realistic phenomena are conducted. It is seen that, if the aircraft RCS can be varied in a ratio of 10:1, either with absorptive or power-amplifying metasurfaces, a performance similar to that of the DRFM is achieved. Furthermore, a ratio of 2:1 is sufficient to make the radar antenna system movements exceed the angular range of the formation. We also anticipate our work to be a starting point for completely new ways of countering radars, e.g., with countless small drones performing passive or active stand-off blinking jamming. Full article
(This article belongs to the Special Issue Metasurfaces: Design, Fabrication and Applications)
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