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Photonics
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Advanced Photonics Metamaterials and Metasurfaces: Science and Applications
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Advanced Photonics Metamaterials and Metasurfaces: Science and Applications

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

Deadline for manuscript submissions: 15 September 2024 | Viewed by 3986

Special Issue Editors

Dr. Zhaojian Zhang

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Guest Editor
Department of Physics, National University of Defense Technology, Changsha 410073, China
Interests: photonic metasurfaces; polaritonic metasurfaces; photonic crystals; topological photonics
Special Issues, Collections and Topics in MDPI journals
Prof. Dr. Junbo Yang

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Guest Editor
Department of Physics, National University of Defense Technology, Changsha 410073, China
Interests: silicon photonics; inverse-designed photonics; metalenses; infrared stealth and camouflage

Special Issue Information

Dear Colleagues,

Photonics metamaterials and metasurfaces have emerged as a burgeoning field at the forefront of scientific research, offering unprecedented control over light–matter interactions. These artificially engineered meta-structures, with their tailored arrangements of nanostructured building blocks, possess extraordinary properties beyond those found in naturally occurring materials. With their ability to manipulate light at the subwavelength scale, they hold immense potential for groundbreaking advancements and applications in photonics, including sensing, imaging, energy harvesting, and communication.

This Special Issue aims to bring together researchers from diverse scientific backgrounds to showcase the latest advancements in advanced photonics metamaterials and metasurfaces, focusing on both fundamental science and practical applications. It serves as a platform for scientists and engineers to share their cutting-edge research and explore the unlimited possibilities brought about by these remarkable meta-structures. This collection of research articles will shed light on the profound impact of these meta-structures on various scientific and technological domains, while inspiring future investigations into their countless possibilities.

Original research articles and reviews are welcome. Research areas may include (but are not limited to) the following:

  • Topological metamaterials and metasurfaces;
  • Non-Hermitian metamaterials and metasurfaces;
  • Inverse-designed metamaterials and metasurfaces;
  • Active metamaterials and metasurfaces;
  • Multilayer metasurfaces and Moiré metasurfaces;
  • Multifunctional metasurfaces and multispectral metasurfaces;
  • Metalenses;
  • Nonlocal metasurfaces;
  • Ultra-high-Q metasurfaces;
  • High-temperature metasurfaces.

We are looking forward to receiving your contributions.

Dr. Zhaojian Zhang
Prof. Dr. Junbo Yang
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

  • metamaterials
  • metasurfaces
  • topological photonics
  • non-Hermitian photonics
  • Moiré photonics
  • metalenses
  • metalenses
  • metadevices
  • inverse design
  • bound states in the continuum

Published Papers (4 papers)

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Research

9 pages, 3226 KiB  
Communication
Thermally Controlled Broadband Ge2Sb2Te5-Based Metamaterial Absorber for Imaging Applications
by Zifeng Qiu, Gui Jin and Bin Tang
Photonics 2024, 11(3), 272; https://doi.org/10.3390/photonics11030272 - 19 Mar 2024
Viewed by 639
Abstract
In this paper, we theoretically and numerically demonstrate a thermally controlled broadband absorber based on the phase change material Ge2Sb2Te5 (GST). When GST operates in the amorphous state, the proposed metamaterial acts as a broadband nearly perfect absorber. [...] Read more.
In this paper, we theoretically and numerically demonstrate a thermally controlled broadband absorber based on the phase change material Ge2Sb2Te5 (GST). When GST operates in the amorphous state, the proposed metamaterial acts as a broadband nearly perfect absorber. The absorption can reach more than 90% in the wavelength range from 0.9 to 1.41 μm. As an application of the GST-based metamaterial absorber, the near-field imaging effect is achieved by using the intensity difference of optical absorption. Moreover, the thermally controlled switchable imaging can be performed by changing the phase transition characteristics of GST, and the imaging quality and contrast can be adjusted by changing the geometrical parameters. This designed metamaterial may have potential applications in near-infrared temperature control imaging, optical encryption, and information hiding. Full article
(This article belongs to the Special Issue Advanced Photonics Metamaterials and Metasurfaces: Science and Applications)
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15 pages, 8725 KiB  
Article
Multi-Layered Metamaterial Absorber: Electromagnetic and Thermal Characterization
by Bui Xuan Khuyen, Ngo Nhu Viet, Pham Thanh Son, Bui Huu Nguyen, Nguyen Hai Anh, Do Thuy Chi, Nguyen Phon Hai, Bui Son Tung, Vu Dinh Lam, Haiyu Zheng, Liangyao Chen and Youngpak Lee
Photonics 2024, 11(3), 219; https://doi.org/10.3390/photonics11030219 - 28 Feb 2024
Viewed by 841
Abstract
Metamaterials, recognized as advanced artificial materials endowed with distinctive properties, have found diverse applications in everyday life, military endeavors, and scientific research. Starting from monolayer metamaterials, multilayer ones are increasingly researched, especially in the field of electromagnetic wave absorption. In this article, we [...] Read more.
Metamaterials, recognized as advanced artificial materials endowed with distinctive properties, have found diverse applications in everyday life, military endeavors, and scientific research. Starting from monolayer metamaterials, multilayer ones are increasingly researched, especially in the field of electromagnetic wave absorption. In this article, we propose a multilayer metamaterial-absorber (MA) structure comprising two resonant layers crafted with copper and FR-4 dielectric. The presented multilayer MA structure exhibited an absorption greater than 90% in a frequency range from 4.84 to 5.02 GHz, with two maximum absorption peaks at 4.89 and 4.97 GHz. The bandwidth of the multilayer MA surpassed that of the individual single-layer MAs, with extension fractions reaching 360% and 257%, respectively. Through the simulation and calculation, the field distribution and equivalent circuit model elucidated that both individual magnetic resonances and their interplay contribute significantly to the absorption behavior of the multilayer MA. The absorption of the proposed multilayer MA structure was also investigated for the oblique incidence in the transverse electric (TE) and transverse magnetic (TM) modes. In the TE mode, the absorption intensity of two maximum peaks was maintained at over 93% up to an incident angle of 40 degrees and dropped to below 80% at an incident angle of 60 degrees. In the TM mode, the absorption was more stable and not significantly affected by the incident angle, ranging from 0 to 60 degrees. An absorption greater than 97% was observed when the incident angle increased from 0 to 60 degrees in the TM mode. Additionally, the approach in our work was further demonstrated by adding more resonant layers, making 3- and 4-layer structures. The results indicated that the absorption bandwidths of the 3- and 4-layer structures increased by 16% and 33%, respectively, compared to the bilayer structure. Furthermore, we analyzed the thermal distribution within the MA to understand the dissipation of absorbed electromagnetic energy. This research offers valuable insight into the augmented MA through a multilayer structure, presenting the implications for microwave applications like electromagnetic shielding, as well as in the design of MAs for terahertz devices and technologies, including emission and thermal imaging. These findings contribute to the advancement of knowledge in enhancing the absorption capabilities across various frequency ranges, expanding the potential applications of metamaterials. Full article
(This article belongs to the Special Issue Advanced Photonics Metamaterials and Metasurfaces: Science and Applications)
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18 pages, 5948 KiB  
Article
Using Planar Metamaterials to Design a Bidirectional Switching Functionality Absorber—An Ultra-Wideband Optical Absorber and Multi-Wavelength Resonant Absorber
by Shu-Han Liao, Chih-Hsuan Wang, Pei-Xiu Ke and Cheng-Fu Yang
Photonics 2024, 11(3), 199; https://doi.org/10.3390/photonics11030199 - 23 Feb 2024
Cited by 1 | Viewed by 657
Abstract
This study aimed to investigate a bidirectional switching functionality absorber, which exhibited an ultra-wideband characteristic in one direction, while in the other direction it demonstrated the absorption of three different resonant wavelengths (frequencies). The fully layered planar structure of the absorber consisted of [...] Read more.
This study aimed to investigate a bidirectional switching functionality absorber, which exhibited an ultra-wideband characteristic in one direction, while in the other direction it demonstrated the absorption of three different resonant wavelengths (frequencies). The fully layered planar structure of the absorber consisted of Al2O3, Zr, yttria-stabilized zirconia (YSZ), Zr, YSZ, Al, YSZ, and Al. The simulations were conducted using the COMSOL Multiphysics® simulation software (version 6.1) for analyses, and this study introduced three pivotal innovations. Firstly, there had been scarce exploration of YSZ and Zr as the materials for designing absorbers. The uses of YSZ and Zr in this context were a relatively uncharted territory, and our research endeavored to showcase their distinctive performance as absorber materials. Secondly, the development of a planar absorber with multifunctional characteristics was a rarity in the existing literature. This encompassed the integrations of an ultra-wideband optical absorber and the creation of a multi-wavelength resonant absorber featuring three resonant wavelengths. The design of such a multi-wavelength resonant absorber holds promise for diverse applications in optical detection and communication systems, presenting novel possibilities in related fields. Lastly, a notable discovery was demonstrated: a discernible redshift phenomenon in the wavelengths of the three resonant peaks when the thickness of YSZ, serving as the material of resonant absorber layer, was increased. Full article
(This article belongs to the Special Issue Advanced Photonics Metamaterials and Metasurfaces: Science and Applications)
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13 pages, 3326 KiB  
Article
Application of W-Doped VO2 Phase Transition Mechanism and Improvement of Hydrophobic Self-Cleaning Properties to Smart Windows
by Xiaoxian Song, Ze Xu, Dongdong Wei, Xuejie Yue, Tao Zhang, Haiting Zhang, Jingjing Zhang, Zijie Dai and Jianquan Yao
Photonics 2023, 10(11), 1198; https://doi.org/10.3390/photonics10111198 - 27 Oct 2023
Viewed by 922
Abstract
A passive responsive smart window is an emerging energy-saving building facility that does not require an active energy supply due to its passive excitation characteristics, which can fundamentally reduce energy consumption. Therefore, achieving passive excitation is the key to the application of such [...] Read more.
A passive responsive smart window is an emerging energy-saving building facility that does not require an active energy supply due to its passive excitation characteristics, which can fundamentally reduce energy consumption. Therefore, achieving passive excitation is the key to the application of such smart windows. In this paper, VO2 is used as a critical raw material for the preparation of smart windows, and we researched the feasibility of its phase transition function and hydrophobic self-cleaning function. VO2 has the characteristic of undergoing a reversible phase transition between metal and insulator under certain temperature conditions and can selectively absorb spectrum at different wavelengths while still maintaining a certain visible light transmission rate, making it a reliable material for smart window applications. The one-step hydrothermal method was used in this work, and different concentrations of tungsten (W) elements were utilized for doping to reduce the VO2 phase transition temperature to 35 °C and even below, thus adapting to the ambient outdoor temperature of the building and enabling the smart window to achieve a combined solar modulation capability of 14.5%. To ensure the environmental adaptability and anti-fouling self-cleaning function of the smart window, as well as to extend the usage period of the smart window, we have modified the smart window material to be hydrophobic, resulting in an environmental surface contact angle of 152.93°, which is a significant hydrophobic improvement over the hydrophilic properties of inorganic glass itself. The realization of the ideal phase transition function and the self-cleaning function echoes the social trend of environmental protection, enriches the use of scenarios and achieves energy saving and emission reduction. Full article
(This article belongs to the Special Issue Advanced Photonics Metamaterials and Metasurfaces: Science and Applications)
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