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Photonics
Special Issues
Advanced Metamaterials and Metadevices
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Advanced Metamaterials and Metadevices

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

Deadline for manuscript submissions: closed (31 July 2021) | Viewed by 9715

Special Issue Editor

Dr. Arash Ahmadivand

E-Mail Website
Guest Editor
Metamaterial Technologies Inc., Pleasanton, CA 94588, USA
Interests: plasmonics; nanophotonics; metamaterials; metadevices; nonlinear optics; metasensors; plexcitonics

Special Issue Information

Dear Colleagues,

Prominent progress in the development of integrated all-optical and optoelectronic instruments based on 3D and quasi-infinite photonic and plasmonic metastructures has entered a new level in recent years due to possessing intriguing properties and having an undeniable role in the implementation of modern applications in diverse fields, including but not limited to medical diagnostics and label-free genetic analysis, cellular level imaging, astronomy, security and military, nondestructive quality control, high-bandwidth communication, and advanced computational systems. Such an extensive range of applications has thrust metadevice research from relative obscurity into the limelight. Pioneering attempts in metaphotonic and metaplasmonic devices and platforms date back to the previous century with the demonstration of waveguides, routers, lasers, filters, detectors, light harvesters, and sensors. Recent advancements in artificial materials research have enabled the emergence of efficient optical tools. Driven by the ongoing race to augment both responsivity and efficiency of photonic tools, researchers are now able to devise on-chip instruments in unique architectures. Keeping the progresses, challenges, and prospects in mind, this Special Issue of Photonics entitled “Advanced Metamaterials and Metadevices” focuses on fundamental and applied research in the field of metamaterials and associating devices in order to develop efficient, responsive, and integrated photonic and plasmonic metadevices.

Dr. Arash Ahmadivand
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

  • plasmonics
  • nanophotonics
  • metamaterials
  • metadevices
  • nonlinear optics
  • metasensors
  • plexcitonics

Published Papers (4 papers)

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Research

8 pages, 1510 KiB  
Communication
All-Metal Terahertz Metamaterial Absorber and Refractive Index Sensing Performance
by Jing Yu, Tingting Lang and Huateng Chen
Photonics 2021, 8(5), 164; https://0-doi-org.brum.beds.ac.uk/10.3390/photonics8050164 - 14 May 2021
Cited by 27 | Viewed by 3474
Abstract
This paper presents a terahertz (THz) metamaterial absorber made of stainless steel. We found that the absorption rate of electromagnetic waves reached 99.95% at 1.563 THz. Later, we analyzed the effect of structural parameter changes on absorption. Finally, we explored the application of [...] Read more.
This paper presents a terahertz (THz) metamaterial absorber made of stainless steel. We found that the absorption rate of electromagnetic waves reached 99.95% at 1.563 THz. Later, we analyzed the effect of structural parameter changes on absorption. Finally, we explored the application of the absorber in refractive index sensing. We numerically demonstrated that when the refractive index (n) is changing from 1 to 1.05, our absorber can yield a sensitivity of 74.18 μm/refractive index unit (RIU), and the quality factor (Q-factor) of this sensor is 36.35. Compared with metal–dielectric–metal sandwiched structure, the absorber designed in this paper is made of stainless steel materials with no sandwiched structure, which greatly simplifies the manufacturing process and reduces costs. Full article
(This article belongs to the Special Issue Advanced Metamaterials and Metadevices)
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8 pages, 2515 KiB  
Communication
Meta-Deflectors Made of Dielectric Nanohole Arrays with Anti-Damage Potential
by Haichao Yu, Feng Tang, Jingjun Wu, Zao Yi, Xin Ye and Yiqun Wang
Photonics 2021, 8(4), 107; https://0-doi-org.brum.beds.ac.uk/10.3390/photonics8040107 - 06 Apr 2021
Cited by 3 | Viewed by 1939
Abstract
In intense-light systems, the traditional discrete optical components lead to high complexity and high cost. Metasurfaces, which have received increasing attention due to the ability to locally manipulate the amplitude, phase, and polarization of light, are promising for addressing this issue. In the [...] Read more.
In intense-light systems, the traditional discrete optical components lead to high complexity and high cost. Metasurfaces, which have received increasing attention due to the ability to locally manipulate the amplitude, phase, and polarization of light, are promising for addressing this issue. In the study, a metasurface-based reflective deflector is investigated which is composed of silicon nanohole arrays that confine the strongest electric field in the air zone. Subsequently, the in-air electric field does not interact with the silicon material directly, attenuating the optothermal effect that causes laser damage. The highest reflectance of nanoholes can be above 99% while the strongest electric fields are tuned into the air zone. One presentative deflector is designed based on these nanoholes with in-air-hole field confinement and anti-damage potential. The 1st order of the meta-deflector has the highest reflectance of 55.74%, and the reflectance sum of all the orders of the meta-deflector is 92.38%. The optothermal simulations show that the meta-deflector can theoretically handle a maximum laser density of 0.24 W/µm2. The study provides an approach to improving the anti-damage property of the reflective phase-control metasurfaces for intense-light systems, which can be exploited in many applications, such as laser scalpels, laser cutting devices, etc. Full article
(This article belongs to the Special Issue Advanced Metamaterials and Metadevices)
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26 pages, 2221 KiB  
Article
On the Transmittance of Metallic Superlattices in the Optical Regime and the True Refraction Angle
by Pedro Pereyra
Photonics 2021, 8(3), 86; https://0-doi-org.brum.beds.ac.uk/10.3390/photonics8030086 - 23 Mar 2021
Cited by 3 | Viewed by 1682
Abstract
Transmission of electromagnetic fields through (dielectric/metallic)n superlattices, for frequencies below the plasma frequency ωp, is a subtle and important topic [...] Read more.
Transmission of electromagnetic fields through (dielectric/metallic)n superlattices, for frequencies below the plasma frequency ωp, is a subtle and important topic that is reviewed and further developed here. Recently, an approach for metallic superlattices based on the theory of finite periodic systems was published. Unlike most, if not all, of the published approaches that are valid in the n→∞ limit, the finite periodic systems approach is valid for any value of n, allows one to determine analytical expressions for scattering amplitudes and dispersion relations. It was shown that, for frequencies below ωp, large metallic-layer thickness, and electromagnetic fields moving along the so-called “true” angle, anomalous results with an apparent parity effect appear. We show here that these results are related to the lack of unitarity and the underlying phenomena of absorption and loss of energy. To solve this problem we present two compatible approaches, both based on the theory of finite periodic systems, which is not only more accurate, but has also the ability to reveal and predict the intra-subband resonances. In the first approach we show that by keeping complex angles, above and below ωp, the principle of flux conservation is fully satisfied. The results above ωp remain the same as in Pereyra (2020). This approach, free of assumptions, where all the information of the scattering process is preserved, gives us insight to improve the formalism where the assumption of electromagnetic fields moving along the real angles is made. In fact, we show that by taking into account the induced currents and the requirement of flux conservation, we end up with an improved approach, with new Fresnel and transmission coefficients, fully compatible with those of the complex-angle approach. The improved approach also allows one to evaluate the magnitude of the induced currents and the absorbed energy, as functions of the frequency and the superlattice parameters. We show that the resonant frequencies of intra-subband plasmons, which may be of interest for applications, in particular for biosensors, can be accurately determined. We also apply the approach for the transmission of electromagnetic wave packets, defined in the optical domain, and show that the predicted space-time positions agree extremely well with the actual positions of the wave packet centroids. Full article
(This article belongs to the Special Issue Advanced Metamaterials and Metadevices)
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8 pages, 3288 KiB  
Communication
Numerical Investigation on a Hyperlens with a Large Radius Inner-Surface for Super-Resolution Imaging
by Jiming Yang, Jiangtao Lv, Qiongchan Gu, Yu Ying, Xiaoxiao Jiang and Guangyuan Si
Photonics 2020, 7(4), 107; https://0-doi-org.brum.beds.ac.uk/10.3390/photonics7040107 - 10 Nov 2020
Cited by 1 | Viewed by 1913
Abstract
Hyperlensing devices have drawn great attention in recent years due to their ability to amplify the subwavelength image of objects with more detail and information. In this work, a hyperlens with a radian inner surface is designed and demonstrated. The proposed hyperlens is [...] Read more.
Hyperlensing devices have drawn great attention in recent years due to their ability to amplify the subwavelength image of objects with more detail and information. In this work, a hyperlens with a radian inner surface is designed and demonstrated. The proposed hyperlens is capable of imaging different types of sub-wavelength objects efficiently. Plasmonic resonant cavity is also employed in order to achieve a super-resolution imaging effect. Different objects are investigated to test the performance of the proposed hyperlens. As expected, our hyperlens shows better tolerance than the conventional hyperlensing designs and can achieve imaging resolution down to 60 nm for different types of objects. Full article
(This article belongs to the Special Issue Advanced Metamaterials and Metadevices)
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