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Photonics
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Metamaterials, Photonic Crystals and Plasmonics - Selected Papers from META...
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Metamaterials, Photonic Crystals and Plasmonics - Selected Papers from META 2021

A special issue of Photonics (ISSN 2304-6732).

Deadline for manuscript submissions: closed (31 January 2022) | Viewed by 10733

Special Issue Editor

Prof. Dr. Said Zouhdi

E-Mail Website
Guest Editor
Group of Electrical Engineering-Paris, Paris-Sud University, Orsay, France
Interests: computational electromagnetics; metamaterials and plasmonics; chiral and bianisotropic media; photonic crystals
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

META 2021, the 11th International Conference on Metamaterials, Photonic Crystals, and Plasmonics, will take place at the University of Warsaw, Warsaw, Poland, from 20 to 23 July 2021. The program will facilitate discussions around various current hot topics, such as metasurfaces and metadevices, topological effects in optics, two-dimensional materials, light–matter interaction in nanocavities, plasmonic circuits, thermal engineering, quantum photonic systems, etc.

This Special Issue will contain a selection of papers submitted and accepted at META 2021. Its main scope is to provide a timely and broad collection of the most innovative topics discussed at the latest edition of the congress related to nanophotonics and metamaterials.

We encourage all participants to submit papers to this Special Issue. Particularly impressive feature papers will be published free of charge, and discounts may also be available. Please do not hesitate to contact Ms. Max Pan ([email protected]) if you are interested.

Prof. Said Zouhdi
Guest Editor

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.

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Published Papers (3 papers)

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Research

20 pages, 8360 KiB  
Article
Optical Transmission Plasmonic Color Filter with Wider Color Gamut Based on X-Shaped Nanostructure
by Rehan Shafiq, Adnan Daud Khan, Fatemah F. Al-Harbi, Farman Ali, Ammar Armghan, Muhammad Asif, Anees Ur Rehman, Esraa Mousa Ali, Farhad Arpanaei, Mohammad Alibakhshikenari and Mariana Dalarsson
Photonics 2022, 9(4), 209; https://doi.org/10.3390/photonics9040209 - 23 Mar 2022
Cited by 6 | Viewed by 3259
Abstract
Extraordinary Optical Transmission Plasmonic Color Filters (EOT-PCFs) with nanostructures have the advantages of consistent color, small size, and excellent color reproduction, making them a suitable replacement for colorant-based filters. Currently, the color gamut created by plasmonic filters is limited to the standard red, [...] Read more.
Extraordinary Optical Transmission Plasmonic Color Filters (EOT-PCFs) with nanostructures have the advantages of consistent color, small size, and excellent color reproduction, making them a suitable replacement for colorant-based filters. Currently, the color gamut created by plasmonic filters is limited to the standard red, green, blue (sRGB) color space, which limits their use in the future. To address this limitation, we propose a surface plasmon resonance (SPR) color filter scheme, which may provide a RGB-wide color gamut while exceeding the sRGB color space. On the surface of the aluminum film, a unique nanopattern structure is etched. The nanohole functions as a coupled grating that matches photon momentum to plasma when exposed to natural light. Metals and surfaces create surface plasmon resonances as light passes through the metal film. The plasmon resonance wavelength can be modified by modifying the structural parameters of the nanopattern to obtain varied transmission spectra. The International Commission on Illumination (CIE 1931) chromaticity diagram can convert the transmission spectrum into color coordinates and convert the spectrum into various colors. The color range and saturation can outperform existing color filters. Full article
(This article belongs to the Special Issue Metamaterials, Photonic Crystals and Plasmonics - Selected Papers from META 2021)
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9 pages, 2316 KiB  
Article
Superscattering and Directive Antennas via Mode Superposition in Subwavelength Core-Shell Meta-Atoms
by Alexander W. Powell, Michal Mrnka, Alastair P. Hibbins and J. Roy Sambles
Photonics 2022, 9(1), 6; https://doi.org/10.3390/photonics9010006 - 22 Dec 2021
Cited by 9 | Viewed by 3451
Abstract
Designing a subwavelength structure with multiple degenerate resonances at the same frequency can vastly enhance its interaction with electromagnetic radiation, as well as define its directivity. In this work we demonstrate that such mode superposition or ‘stacking’ can be readily achieved through the [...] Read more.
Designing a subwavelength structure with multiple degenerate resonances at the same frequency can vastly enhance its interaction with electromagnetic radiation, as well as define its directivity. In this work we demonstrate that such mode superposition or ‘stacking’ can be readily achieved through the careful structuring of a high-permittivity spherical shell, with either a metallic or a low permittivity dielectric (air) core. We examine the behaviour of these structures both as scatterers of plane wave radiation and as directive antennas. In the case where the core is metallic this leads to a superposition of the magnetic and electric modes of the same order, causing suppression of backscattering and unidirectional antenna emission. For an air core, an electric mode can superimpose with the next-highest order magnetic mode, the backscattered power is maximized and antenna emission is bidirectional. This is shown experimentally at microwave frequencies by observing the backscattering of core-shell spheres and we propose two antenna designs demonstrating different emission patterns defined by the superposition of multiple modes. Full article
(This article belongs to the Special Issue Metamaterials, Photonic Crystals and Plasmonics - Selected Papers from META 2021)
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9 pages, 3560 KiB  
Communication
Flexible Broadband Metamaterial Perfect Absorber Based on Graphene-Conductive Inks
by Le Van Long, Nguyen Sy Khiem, Bui Son Tung, Nguyen Thanh Tung, Trinh Thi Giang, Pham Thanh Son, Bui Xuan Khuyen, Vu Dinh Lam, Liangyao Chen, Haiyu Zheng and Youngpak Lee
Photonics 2021, 8(10), 440; https://doi.org/10.3390/photonics8100440 - 13 Oct 2021
Cited by 17 | Viewed by 2782
Abstract
In this work, we proposed a flexible broadband metamaterial perfect absorber (FBMPA) by exploiting a pasted conductive-graphene ink on a polyimide substrate. For the flat FBMPA, an absorption over 90% was found to cover a wide frequency range (from 7.88 to 18.01 GHz). [...] Read more.
In this work, we proposed a flexible broadband metamaterial perfect absorber (FBMPA) by exploiting a pasted conductive-graphene ink on a polyimide substrate. For the flat FBMPA, an absorption over 90% was found to cover a wide frequency range (from 7.88 to 18.01 GHz). The high-absorption feature was polarization-insensitive and regarded as stable with respect to the oblique incidence up to 30 degrees of electromagnetic wave. The high absorption was maintained well even when the absorber was wrapped. That is, the FBMPA was attached to cylindrical surfaces (with the varying radius from 4 to 50 cm). For both flat and curved states, the absorption mechanism was explained by the perfect impedance matching and the dielectric loss of the proposed absorber. Our work provides the groundwork for the commercialization of future meta-devices such as sensors, optical filters/switchers, photodetectors, and energy converters. Full article
(This article belongs to the Special Issue Metamaterials, Photonic Crystals and Plasmonics - Selected Papers from META 2021)
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