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Advances in Photonics and Optics: Materials and Structures for Emerging Applications

A special issue of Applied Sciences (ISSN 2076-3417). This special issue belongs to the section "Optics and Lasers".

Deadline for manuscript submissions: closed (31 January 2025) | Viewed by 9420

Special Issue Editors

Dr. Giovanni Magno

E-Mail Website
Guest Editor
Department of Electrical and Information Engineering, Politecnico di Bari, Bari, Italy
Interests: design and characterization of photonic devices; photonic crystals; integrated plasmonic waveguides and nanotweezers; graphene based nanostructures; nanoantennas; metasurfaces
Dr. Marco Grande

E-Mail Website
Guest Editor
Department of Electrical and Information Engineering, Politecnico di Bari, Bari, Italy
Interests: design; fabrication and characterization of integrated photonic; graphene-based and plasmonic devices; metasurfaces; optical sensors; microwaves devices; antennas
Special Issues, Collections and Topics in MDPI journals
Dr. Ilaria Marasco

E-Mail Website
Guest Editor Assistant
Department of Electrical and Information Engineering, Politecnico di Bari, Bari, Italy
Interests: graphene-based components; reconfigurable intelligent surface; coding based metasurface; design; fabrication and characterization of microwaves devices and antennas

Special Issue Information

Dear Colleagues,

This Special Issue aims to bring together theoretical and experimental contributions to illustrate the latest advances in the fields of photonics and optics originating in the engineering of structures, materials or their synergistic combination, to outline research trends in addressing current and future challenges. For example, metamaterials, freeform optics, and transformation optics have highlighted the power of this intelligent synergy in controlling the local or orbital properties of light, enabling the enormous potential of optical and photonic devices to be unleashed in a boundless range of applications. In addition, two-dimensional materials, liquid crystals and phase-change materials can further enhance this paradigm by revealing new capabilities and functions even in traditional dielectric or plasmonic structures, such as cavities, couplers, optical interconnections and photonic crystals.

Possible areas in which the intelligent and combined exploitation of the properties of novel geometries, structures, and materials has brought breakthrough innovations include telecommunications, sensing, imaging, computing, energy, and biomedicine.

Dr. Giovanni Magno
Dr. Marco Grande
Guest Editors

Dr. Ilaria Marasco
Guest Editor Assistant

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. Applied Sciences is an international peer-reviewed open access semimonthly 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
  • plasmonics
  • photonics
  • optics
  • smart materials
  • graphene, 2D materials
  • phase-change materials
  • nanoantennas
  • nonlinear materials
  • structure engineering

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Published Papers (5 papers)

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Research

Jump to: Review

18 pages, 9742 KiB  
Article
Physical and Chemical Approaches of Photovoltaic Parameters in Dye-Sensitized Solar Cells to ZnO/ZnS:rGO-Based Photoelectrodes
by Thiago Kurz Pedra, Ramon Dadalto Carvalho, Cristian Dias Fernandes, Luciano Timm Gularte, Carolina Ferreira de Matos Jauris, Eduardo Ceretta Moreira, Mateus Meneghetti Ferrer, Cristiane Wienke Raubach, Sérgio da Silva Cava, Pedro Lovato Gomes Jardim, Elson Longo and Mario Lucio Moreira
Appl. Sci. 2025, 15(1), 291; https://doi.org/10.3390/app15010291 - 31 Dec 2024
Viewed by 926
Abstract
This study proposes an alternative process for obtaining ZnO/ZnS:rGO heterostructures for use in DSSCs and as promising materials for potential applications in other photonic process, such as photocatalysis and photodetection. The compound was obtained through a microwave-assisted hydrothermal method, where the electromagnetic waves [...] Read more.
This study proposes an alternative process for obtaining ZnO/ZnS:rGO heterostructures for use in DSSCs and as promising materials for potential applications in other photonic process, such as photocatalysis and photodetection. The compound was obtained through a microwave-assisted hydrothermal method, where the electromagnetic waves and temperature were crucial points for forming ZnO, ZnO/ZnS and reducing graphene oxide (GO). The XRD, Raman, FT-IR, and FESEM results presented the structural, morphological, and chemical structures, which suggest the conversion of ZnO to ZnS for samples with higher concentrations of reduced graphene oxide (rGO). Additionally, the optical properties were analyzed through photoluminescence and UV-Vis measurements. The electrical behavior of the photoelectrodes was investigated through J-V measurements in light and dark conditions. In addition, electrochemical impedance spectroscopy (EIS) was performed and Bode phase plots were created, analyzing the recombination processes and electron lifetime. The J-V results showed that for smaller amounts of rGO, the dye-sensitized solar cells (DSSC) efficiency improved compared to the ZnO/ZnS single structure. However, it was observed that with more significant amounts of rGO, the photocurrent value decreased due to the presence of charge-trapping centers. On the other hand, the best results were obtained for the ZnO/ZnS:1% rGO sample, which showed an increase of 14.2% in the DSSC efficiency compared to the pure ZnO/ZnS photoelectrode. Full article
(This article belongs to the Special Issue Advances in Photonics and Optics: Materials and Structures for Emerging Applications)
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13 pages, 1398 KiB  
Article
Nanogap Plasmon Resonator: An Analytical Model
by Andrey K. Sarychev, Grégory Barbillon and Andrey Ivanov
Appl. Sci. 2023, 13(23), 12882; https://doi.org/10.3390/app132312882 - 30 Nov 2023
Cited by 1 | Viewed by 1364
Abstract
Generic, analytical equations are suggested for the localized plasmon excited in a narrow gap formed between a metal/dielectric cylinder and a metal surface. The local distribution of the electric field was found by employing the quasi-static approximation. A strong electric field can be [...] Read more.
Generic, analytical equations are suggested for the localized plasmon excited in a narrow gap formed between a metal/dielectric cylinder and a metal surface. The local distribution of the electric field was found by employing the quasi-static approximation. A strong electric field can be achieved in the nanogap in the optical and infrared frequency regimes. The maximum electric field was reached when the incident light was in resonance with the mode of the plasmon gap and can be expressed in terms of the incident field E0 as Emax/E0∝εmδ−2 with δ=ℑεm/ℜεm. This aspect of the maximum field achievable in the nanogap can be enhanced by many orders of magnitude. The results of the analytical model were in relatively good agreement with a known theoretical model and the experimental results of surface-enhanced Raman scattering (SERS). The narrow gap resonator seems to be a powerful and flexible tool for different spectroscopies such as SERS and infrared absorption. Full article
(This article belongs to the Special Issue Advances in Photonics and Optics: Materials and Structures for Emerging Applications)
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Review

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26 pages, 1292 KiB  
Review
Recent Progress in Multiplexed Single-Photon Sources
by Peter Adam and Matyas Mechler
Appl. Sci. 2024, 14(23), 11249; https://doi.org/10.3390/app142311249 - 2 Dec 2024
Viewed by 1228
Abstract
We review the progress in multiplexed single-photon sources, including overviews on heralded single-photon sources and photon-number-resolving detectors, the various approaches to multiplexing, and their successful experimental realizations. We also summarize the recent results on the theoretical description and optimization of multiplexed single-photon sources, [...] Read more.
We review the progress in multiplexed single-photon sources, including overviews on heralded single-photon sources and photon-number-resolving detectors, the various approaches to multiplexing, and their successful experimental realizations. We also summarize the recent results on the theoretical description and optimization of multiplexed single-photon sources, focusing on the procedures and methods that enable the improvement of the performance of these sources. Full article
(This article belongs to the Special Issue Advances in Photonics and Optics: Materials and Structures for Emerging Applications)
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23 pages, 3089 KiB  
Review
Recent Advances in Black Silicon Surface Modification for Enhanced Light Trapping in Photodetectors
by Abdulrahman Alsolami, Hadba Hussain, Radwan Noor, Nourah AlAdi, Nada Almalki, Abdulaziz Kurdi, Thamer Tabbakh, Adnan Zaman, Salman Alfihed and Jing Wang
Appl. Sci. 2024, 14(21), 9841; https://doi.org/10.3390/app14219841 - 28 Oct 2024
Cited by 4 | Viewed by 1812
Abstract
The intricate nanostructured surface of black silicon (BSi) has advanced photodetector technology by enhancing light absorption. Herein, we delve into the latest advancements in BSi surface modification techniques, specifically focusing on their profound impact on light trapping and resultant photodetector performance improvement. Established [...] Read more.
The intricate nanostructured surface of black silicon (BSi) has advanced photodetector technology by enhancing light absorption. Herein, we delve into the latest advancements in BSi surface modification techniques, specifically focusing on their profound impact on light trapping and resultant photodetector performance improvement. Established methods such as metal-assisted chemical etching, electrochemical etching, reactive ion etching, plasma etching, and laser ablation are comprehensively analyzed, delving into their mechanisms and highlighting their respective advantages and limitations. We also explore the impact of BSi on the emerging applications in silicon (Si)-based photodetectors, showcasing their potential for pushing the boundaries of light-trapping efficiency. Throughout this review, we critically evaluate the trade-offs between fabrication complexity and performance enhancement, providing valuable insights for future development in this rapidly evolving field. This knowledge on the BSi surface modification and its applications in photodetectors can play a crucial role in future implementations to substantially boost light trapping and the performance of Si-based optical detection devices consequently. Full article
(This article belongs to the Special Issue Advances in Photonics and Optics: Materials and Structures for Emerging Applications)
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25 pages, 9585 KiB  
Review
Integration of Plasmonic Structures in Photonic Waveguides Enables Novel Electromagnetic Functionalities in Photonic Circuits
by Giovanni Magno, Vy Yam and Béatrice Dagens
Appl. Sci. 2023, 13(23), 12551; https://doi.org/10.3390/app132312551 - 21 Nov 2023
Cited by 6 | Viewed by 3089
Abstract
The development of integrated, compact, and multifunctional photonic circuits is crucial in increasing the capacity of all-optical signal processing for communications, data management, and microsystems. Plasmonics brings compactness to numerous photonic functions, but its integration into circuits is not straightforward due to insertion [...] Read more.
The development of integrated, compact, and multifunctional photonic circuits is crucial in increasing the capacity of all-optical signal processing for communications, data management, and microsystems. Plasmonics brings compactness to numerous photonic functions, but its integration into circuits is not straightforward due to insertion losses and poor mode matching. The purpose of this article is to detail the integration strategies of plasmonic structures on dielectric waveguides, and to show through some examples the variety and the application prospect of integrated plasmonic functions. Full article
(This article belongs to the Special Issue Advances in Photonics and Optics: Materials and Structures for Emerging Applications)
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