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Photonics
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Metamaterials for Advanced Photonic and Plasmonic Applications – Selected Papers...
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Metamaterials for Advanced Photonic and Plasmonic Applications – Selected Papers from Metamaterials’2019

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

Deadline for manuscript submissions: closed (31 May 2020) | Viewed by 16867

Special Issue Editors

Dr. Dimitrios Sounas

E-Mail Website
Guest Editor
Department of Electrical and Computer Engineering, Wayne State University, Detroit, MI 48202, USA
Interests: RF systems; non-reciprocal devices; metamaterials and metasurfaces; graphene; nanophotonics
Dr. Constantinos Valagiannopoulos

E-Mail Website
Guest Editor
Department of Physics, School of Science and Technology, Nazarbayev University, Qabanbay Batyr Ave 53, Astana 010000, Kazakhstan
Interests: photonics; metamaterials; plasmonics; graphene; inverse methods

Special Issue Information

Dear Colleagues,

The Thirteenth International Congress on Artificial Materials for Novel Wave Phenomena – Metamaterials'2019, will comprise a 4-day Conference (16–19 September), and a 2-day Doctoral School (20–21 September). Organized by the METAMORPHOSE VI AISBL (www.metamorphose-vi.org), this Congress follows the success of Metamaterials 2007-2018 and continues the traditions of the highly successful series of International Conferences on Complex Media and Metamaterials (Bianisotropics) and Rome International Workshops on Metamaterials and Special Materials for Electromagnetic Applications and Telecommunications. The Congress will provide a unique topical forum to share the latest results of the metamaterials research in Europe and worldwide. It will bring together the engineering, physics, applied mathematics and material science communities working on artificial materials and their applications in electromagnetism/optics, acoustics/mechanics, transport, and multi-physics.

We are very glad to serve as Guest Editors of this Special Issue to be published in Photonics that will contain a selection of papers submitted and accepted at Metamaterials’2019. 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 photonics and plasmonics. We warmly invite researchers to submit their contributions, both original research articles and review papers, to this Special Issue. Potential topics include, but are not limited to:

  • Fundamentals and applications of artificial materials and surfaces at infrared and optical frequencies;
  • Plasmonics and optical properties of metamaterials;
  • Novel optical effects enabled by metamaterials;
  • Experimental techniques and characterization of nanomaterials;
  • Biological and biomedical applications of metamaterials;
  • Metamaterials for nanoelectronics and nanophotonics;
  • Metamaterials for quantum electronics;
  • Energy harvesting and thermophotovoltaics;
  • Nanocarbon, nanotubes, graphene and bio-inspired materials

Dr. Dimitrios Sounas
Dr. Constantinos Valagiannopoulos
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.

Keywords

  • complex materials and metamaterials
  • structured surfaces and metasurfaces
  • novel optical effects
  • nanomaterials, nanoparticles and nanoplasmonics
  • nonlinear, quantum, superconducting metamaterials
  • optical cloaking and transformation optics

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Further information on MDPI's Special Issue polices can be found here.

Published Papers (4 papers)

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Research

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21 pages, 7011 KiB  
Article
Design of a Reconfigurable THz Filter Based on Metamaterial Wire Resonators with Applications on Sensor Devices
by João Pedro Pavia, Nuno Souto and Marco Alexandre Ribeiro
Photonics 2020, 7(3), 48; https://doi.org/10.3390/photonics7030048 - 10 Jul 2020
Cited by 6 | Viewed by 3067
Abstract
A study on the design, simulation and characterization of a reconfigurable terahertz (THz) filter, composed of two frequency-selective surfaces (FSSs) with applications on sensor devices in general and highly sensitive stress sensors, is presented in this paper. Using the developed theoretical model, we [...] Read more.
A study on the design, simulation and characterization of a reconfigurable terahertz (THz) filter, composed of two frequency-selective surfaces (FSSs) with applications on sensor devices in general and highly sensitive stress sensors, is presented in this paper. Using the developed theoretical model, we found out that by careful tuning the wire parameters, it is possible to control the filter sensitivity and also the energy transmission and reflection that passes through the structure. Numerical modelling of both the mechanical and electromagnetic components (using the elasticity equation and Maxwell’s equations, respectively) has been undertaken for two types of the device assemblies based on different thermoplastic polymers transparent to the THz radiation, namely: high-density polyethylene (HDPE) and polytetrafluoroethylene (PTFE), operating in a THz window from 395 to 455 GHz. The numerical results allowed us to characterize the relation between the reflectance/transmittance and the amount of force required to obtain a specific frequency shift along that window. It was found that the device assembled with HDPE presents a more linear response and it is able to pass from a full transparency to almost full opacity using only its linear operating zone. Due to its characteristics, this THz filter might be an interesting solution not only for THz sensors based on reconfigurable filters but also for optical modulators for the THz domain. Full article
(This article belongs to the Special Issue Metamaterials for Advanced Photonic and Plasmonic Applications – Selected Papers from Metamaterials’2019)
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19 pages, 1825 KiB  
Article
Photonic Transmittance in Metallic and Left Handed Superlattices
by Pedro Pereyra
Photonics 2020, 7(2), 29; https://doi.org/10.3390/photonics7020029 - 18 Apr 2020
Cited by 4 | Viewed by 3085 | Correction
Abstract
We study the transmission of electromagnetic waves through layered structures of metallic and left-handed media. Resonant band structures of transmission coefficients are obtained as functions of the incidence angle, the geometric parameters, and the number of unit cells of the superlattices. The theory [...] Read more.
We study the transmission of electromagnetic waves through layered structures of metallic and left-handed media. Resonant band structures of transmission coefficients are obtained as functions of the incidence angle, the geometric parameters, and the number of unit cells of the superlattices. The theory of finite periodic systems that we use is free of assumptions, the finiteness of the periodic system being an essential condition. We rederive the correct recurrence relation of the Chebyshev polynomials that carry the physical information of the coherent coupling of plasmon modes and interface plasmons and surface plasmons, responsible for the photonic bands and the resonant structure of the surface plasmon polaritons. Unlike the dispersion relations of infinite periodic systems, which at best predict the bandwidths, we show that the dispersion relation of this theory predicts not only the bands, but also the resonant plasmons’ frequencies, above and below the plasma frequency. We show that, besides the strong influence of the incidence angle and the characteristic low transmission of a single conductor slab for frequencies ω below the plasma frequency ω p , the coherent coupling of the bulk plasmon modes and the interface surface plasmon polaritons lead to oscillating transmission coefficients and, depending on the parity of the number of unit cells n of the superlattice, the transmission coefficient vanishes or amplifies as the conductor width increases. Similarly, the well-established transmission coefficient of a single left-handed slab, which exhibits optical antimatter effects, becomes highly resonant with superluminal effects in superlattices. We determine the space-time evolution of a wave packet through the λ / 4 photonic superlattice whose bandwidth becomes negligible, and the transmission coefficient becomes a sequence of isolated and equidistant peaks with negative phase times. We show that the space-time evolution of a Gaussian wave packet, with the centroid at any of these peaks, agrees with the theoretical predictions, and no violation of the causality principle occurs. Full article
(This article belongs to the Special Issue Metamaterials for Advanced Photonic and Plasmonic Applications – Selected Papers from Metamaterials’2019)
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Review

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15 pages, 3875 KiB  
Review
Scattering Properties of PT-Symmetric Chiral Metamaterials
by Ioannis Katsantonis, Sotiris Droulias, Costas M. Soukoulis, Eleftherios N. Economou and Maria Kafesaki
Photonics 2020, 7(2), 43; https://doi.org/10.3390/photonics7020043 - 17 Jun 2020
Cited by 9 | Viewed by 4475
Abstract
The combination of gain and loss in optical systems that respect parity–time (PT)-symmetry has pointed recently to a variety of novel optical phenomena and possibilities. Many of them can be realized by combining the PT-symmetry concepts with metamaterials. Here we investigate the case [...] Read more.
The combination of gain and loss in optical systems that respect parity–time (PT)-symmetry has pointed recently to a variety of novel optical phenomena and possibilities. Many of them can be realized by combining the PT-symmetry concepts with metamaterials. Here we investigate the case of chiral metamaterials, showing that combination of chiral metamaterials with PT-symmetric gain–loss enables a very rich variety of phenomena and functionalities. Examining a simple one-dimensional chiral PT-symmetric system, we show that, with normally incident waves, the PT-symmetric and the chirality-related characteristics can be tuned independently and superimposed almost at will. On the other hand, under oblique incidence, chirality affects all the PT-related characteristics, leading also to novel and uncommon wave propagation features, such as asymmetric transmission and asymmetric optical activity and ellipticity. All these features are highly controllable both by chirality and by the angle of incidence, making PT-symmetric chiral metamaterials valuable in a large range of polarization-control-targeting applications. Full article
(This article belongs to the Special Issue Metamaterials for Advanced Photonic and Plasmonic Applications – Selected Papers from Metamaterials’2019)
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Other

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7 pages, 1512 KiB  
Letter
Nonreciprocal Wavefront Manipulation in Synthetically Moving Metagratings
by Younes Ra’di and Andrea Alù
Photonics 2020, 7(2), 28; https://doi.org/10.3390/photonics7020028 - 18 Apr 2020
Cited by 17 | Viewed by 5316
Abstract
We introduce a metasurface platform for nonreciprocal wave manipulation. We study metagratings composed of nonreciprocal bianisotropic particles supporting synthetic motion, which enable nonreciprocal energy transfer between tailored Floquet channels with unitary efficiency. Based on this framework, we derive the required electromagnetic polarizabilities to [...] Read more.
We introduce a metasurface platform for nonreciprocal wave manipulation. We study metagratings composed of nonreciprocal bianisotropic particles supporting synthetic motion, which enable nonreciprocal energy transfer between tailored Floquet channels with unitary efficiency. Based on this framework, we derive the required electromagnetic polarizabilities to realize a metagrating supporting space wave circulation with unitary efficiency for free-space radiation and design a microwave metagrating supporting this functionality. The proposed concept opens new research venues to control free-space radiation with high efficiency beyond the limits dictated by Lorentz reciprocity. Full article
(This article belongs to the Special Issue Metamaterials for Advanced Photonic and Plasmonic Applications – Selected Papers from Metamaterials’2019)
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