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Photonics
Special Issues
Emerging Trends in Metamaterials and Metasurfaces Research
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Emerging Trends in Metamaterials and Metasurfaces Research

A special issue of Photonics (ISSN 2304-6732). This special issue belongs to the section "Optoelectronics and Optical Materials".

Deadline for manuscript submissions: 10 November 2024 | Viewed by 797

Special Issue Editors

Dr. David E. Fernandes

E-Mail Website
Guest Editor
Instituto de Telecomunicações, Lisbon, Portugal
Interests: metamaterials; photonics
Dr. Tiago A. Morgado

E-Mail Website
Guest Editor
Instituto de Telecomunicações, Department of Electrical and Computer Engineering, University of Coimbra, Coimbra, Portugal
Interests: metamaterials; plasmonics; nanophotonics

Special Issue Information

Dear Colleagues,

Metamaterials and metasurfaces are artificially structured materials crafted through the precise arrangement of metallic or dielectric inclusions, often organized in a periodic lattice. Crucially, the way these structures behave at the mesoscopic level is determined not only by the chemical composition of their constituent elements, but also by the specific geometric characteristics (size, shape, orientation, and more) of these elements. As a result, metamaterials and metasurfaces provide a multitude of design possibilities and, consequently, a wide range of physically attainable responses. These intricately engineered materials have the potential to yield unconventional and advantageous electromagnetic responses that extend beyond the capabilities of natural media. Their meticulous manipulation of electromagnetic fields and unprecedented control over electromagnetic wave propagation have positioned metamaterials and metasurfaces at the forefront of scientific research for over two decades. The objective of this Special Issue is to showcase the most current developments in metamaterial design and applications, with a focus on configurations offering advanced properties, versatile functionalities and intriguing applications. We invite you to submit a research paper on the theoretical aspects and/or practical applications of artificially structured media in this Special Issue of Photonics entitled “Emerging Trends in Metamaterials and Metasurfaces Research”.

We welcome submissions on topics that include (but not limited to) emerging trends on :

  • Nonlinear metamaterials and metasurfaces;
  • Reconfigurable and programmable (smart) metamaterials and metasurfaces;
  • Spacetime-modulated structures;
  • Metamaterials and metasurfaces for enhanced imaging capabilities;
  • Active metamaterials and metasurfaces;
  • Metamaterials and metasurfaces for biomedical applications;
  • Metamaterials and metasurfaces for wavefront control;
  • Topological metamaterials and metasurfaces;
  • Extreme wave phenomena in metamaterials and metasurfaces；
  • Metamaterial antennas and sensors.

Dr. David E. Fernandes
Dr. Tiago A. Morgado
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. Photonics 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 2400 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

  • nonlinear metamaterials and metasurfaces
  • reconfigurable and programmable (smart) metamaterials and metasurfaces
  • space-time modulated structures
  • metamaterials and metasurfaces for enhanced imaging capabilities
  • active metamaterials and metasurfaces
  • metamaterials and metasurfaces for biomedical applications
  • metamaterials and metasurfaces for wavefront control
  • topological metamaterials and metasurfaces
  • extreme wave phenomena in metamaterials and metasurfaces
  • metamaterial antennas and sensors

Published Papers (2 papers)

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Research

11 pages, 854 KiB  
Article
A Terahertz Programmable Digital Metasurface Based on Vanadium Dioxide
by Tianrui Pan, Chenxi Liu, Shuang Peng, Haiying Lu, Han Zhang, Xiaoming Xu and Fei Yang
Photonics 2024, 11(6), 527; https://doi.org/10.3390/photonics11060527 (registering DOI) - 1 Jun 2024
Abstract
Metasurfaces can realize the flexible manipulation of electromagnetic waves, which have the advantages of a low profile and low loss. In particular, the coding metasurface can flexibly manipulate electromagnetic waves through controllable sequence encoding of the coding units to achieve different functions. In [...] Read more.
Metasurfaces can realize the flexible manipulation of electromagnetic waves, which have the advantages of a low profile and low loss. In particular, the coding metasurface can flexibly manipulate electromagnetic waves through controllable sequence encoding of the coding units to achieve different functions. In this paper, a three−layer active coding metasurface is designed based on vanadium dioxide (VO2), which has an excellent phase transition. For the designed unit cell, the top patterned layer is composed of two split square resonant rings (SSRRs), whose gaps are in opposite directions, and each SSRR is composed of gold and VO2. When VO2 changes from the dielectric state to the metal state, the resonant mode changes from microstrip resonance to LC resonance, correspondingly. According to the Pancharatnam−Berry (P−B) phase, the designed metasurface can actively control terahertz circularly polarized waves in the near field. The metasurface can manipulate the order of the generated orbital angular momentum (OAM) beams: when the dielectric VO2 changes to metal VO2, the order l of the OAM beams generated by the metasurface changes from −1 to −2, and the purity of the generated OAM beams is relatively high. It is expected to have important application values in terahertz wireless communication, radar, and other fields. Full article
(This article belongs to the Special Issue Emerging Trends in Metamaterials and Metasurfaces Research)
13 pages, 3797 KiB  
Article
Optimized Wide-Angle Metamaterial Edge Filters: Enhanced Performance with Multi-Layer Designs and Anti-Reflection Coatings
by Baidong Wu, James N. Monks, Liyang Yue, Andrew Hurst and Zengbo Wang
Photonics 2024, 11(5), 446; https://doi.org/10.3390/photonics11050446 - 10 May 2024
Viewed by 433
Abstract
This study presents a systematic optimization of wide-angle metamaterial long-pass (LP) edge filters based on silicon nanospheres (SiNP). Multi-layered configurations incorporating SiNP-meta-films and anti-reflection coating (ARC) elements not previously considered in the literature are explored to enhance their filter performance in both stop [...] Read more.
This study presents a systematic optimization of wide-angle metamaterial long-pass (LP) edge filters based on silicon nanospheres (SiNP). Multi-layered configurations incorporating SiNP-meta-films and anti-reflection coating (ARC) elements not previously considered in the literature are explored to enhance their filter performance in both stop and pass bands. This research has successfully developed an accurate model for the effective refractive index using Kramers–Kronig relations, enabling the use of classical thin-film design software for rapid device performance optimization, which is verified by full-wave numerical software. This systematic optimization has produced highly efficient, near-shift-free long-pass metamaterial filters, evidenced by their high optical density (OD = 2.55) and low spectral shift across a wide angular range (0°–60°). These advancements herald the development of high-efficiency metamaterial optical components suitable for a variety of applications that require a consistent performance across diverse angles of incidence. Full article
(This article belongs to the Special Issue Emerging Trends in Metamaterials and Metasurfaces Research)
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