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Nanomaterials
Special Issues
Optical Properties of Plasmonic/Photonic Nanosystems and Nanomaterials
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Optical Properties of Plasmonic/Photonic Nanosystems and Nanomaterials

A special issue of Nanomaterials (ISSN 2079-4991). This special issue belongs to the section "Nanophotonics Materials and Devices".

Deadline for manuscript submissions: closed (30 September 2023) | Viewed by 4014

Special Issue Editors

Dr. Marco Esposito

E-Mail Website
Guest Editor
Institute of Nanotechnology, CNR NANOTEC c/o Campus Ecotekne, Via Monteroni, 73100 Lecce, Italy
Interests: nanophotonics; metamaterials; chirality; plasmon nanoparticles; surface lattice resonances; nanofabrication; plamonics; strong light-matter coupling
Dr. Massimo Cuscunà

E-Mail Website1 Website2
Guest Editor
Institute of Nanotechnology, CNR NANOTEC c/o Campus Ecotekne, Via Monteroni, 73100 Lecce, Italy
Interests: nanophotonics; metamaterials; chirality; plasmonics; optoelectronic devices; nanofabrication
Special Issues, Collections and Topics in MDPI journals
Dr. David Maria Tobaldi

E-Mail Website
Guest Editor
Institute of Nanotechnology, CNR NANOTEC c/o Campus Ecotekne, Via Monteroni, 73100 Lecce, Italy
Interests: inorganic visible-light photo-responsive nanomaterials; energy materials and sustainable hydrogen generation; group III nitrides; 2D materials

Special Issue Information

Dear Colleagues,

Nanostructured materials for plasmonic/photonic applications have become a new research paradigm poised to transform current technologies. Nanofabrication and characterization of such structures are crucial to boost the performances of optical nanosystems.

There is a strong interest in the unconventional optical properties of chiral metamaterials, alternative plasmonic nanostructures (beyond noble metals), hybrid nanostructures and novel 2D or 3D nanostructure arrangements.

This Special Issue provides the possibility to highlight the most recent theoretical and experimental developments in the optical properties of plasmonic/photonic nanosystems and nanomaterials and to discuss their potential applications.

In this Special Issue, we expect to cover a variety of topics:

  • Chiral metamaterials;
  • Plasmonic and photonic nanostructures;
  • Nanostructures for strong light–matter coupling;
  • Hybrid nanophotonics;
  • Plasmonic/photonic nanostructures for sensing, energy and hydrogen production.

We look forward to receiving your contributions.

Dr. Marco Esposito
Dr. Massimo Cuscunà
Dr. David Maria Tobaldi
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. Nanomaterials 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 2900 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

  • nanophotonics
  • metamaterials
  • chirality
  • plasmon nanoparticles
  • surface lattice resonances
  • nanofabrication
  • plasmonics
  • strong light–matter coupling
  • optoelectronic devices
  • 2D materials
  • nanolasing
  • bound state in the continuum
  • sensing
  • energy and hydrogen production

Published Papers (3 papers)

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Research

12 pages, 6417 KiB  
Article
Two-Channel Indirect-Gap Photoluminescence and Competition between the Conduction Band Valleys in Few-Layer MoS2
by Ayaz H. Bayramov, Elnur A. Bagiyev, Elvin H. Alizade, Javid N. Jalilli, Nazim T. Mamedov, Zakir A. Jahangirli, Saida G. Asadullayeva, Yegana N. Aliyeva, Massimo Cuscunà, Daniela Lorenzo, Marco Esposito, Gianluca Balestra, Daniela Simeone, David Maria Tobaldi, Daniel Abou-Ras and Susan Schorr
Nanomaterials 2024, 14(1), 96; https://doi.org/10.3390/nano14010096 - 30 Dec 2023
Viewed by 863
Abstract
MoS2 is a two-dimensional layered transition metal dichalcogenide with unique electronic and optical properties. The fabrication of ultrathin MoS2 is vitally important, since interlayer interactions in its ultrathin varieties will become thickness-dependent, providing thickness-governed tunability and diverse applications of those properties. [...] Read more.
MoS2 is a two-dimensional layered transition metal dichalcogenide with unique electronic and optical properties. The fabrication of ultrathin MoS2 is vitally important, since interlayer interactions in its ultrathin varieties will become thickness-dependent, providing thickness-governed tunability and diverse applications of those properties. Unlike with a number of studies that have reported detailed information on direct bandgap emission from MoS2 monolayers, reliable experimental evidence for thickness-induced evolution or transformation of the indirect bandgap remains scarce. Here, the sulfurization of MoO3 thin films with nominal thicknesses of 30 nm, 5 nm and 3 nm was performed. All sulfurized samples were examined at room temperature with spectroscopic ellipsometry and photoluminescence spectroscopy to obtain information about their dielectric function and edge emission spectra. This investigation unveiled an indirect-to-indirect crossover between the transitions, associated with two different Λ and K valleys of the MoS2 conduction band, by thinning its thickness down to a few layers. Full article
(This article belongs to the Special Issue Optical Properties of Plasmonic/Photonic Nanosystems and Nanomaterials)
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14 pages, 2925 KiB  
Article
Synergistic Effects of Localized Surface Plasmon Resonance, Surface Plasmon Polariton, and Waveguide Plasmonic Resonance on the Same Material: A Promising Hypothesis to Enhance Organic Solar Cell Efficiency
by Issoufou Ibrahim Zamkoye, Bruno Lucas and Sylvain Vedraine
Nanomaterials 2023, 13(15), 2209; https://doi.org/10.3390/nano13152209 - 29 Jul 2023
Cited by 4 | Viewed by 1247
Abstract
This work explores the utilization of plasmonic resonance (PR) in silver nanowires to enhance the performance of organic solar cells. We investigate the simultaneous effect of localized surface plasmon resonance (LSPR), surface plasmon polariton (SPP), and waveguide plasmonic mode on silver nanowires, which [...] Read more.
This work explores the utilization of plasmonic resonance (PR) in silver nanowires to enhance the performance of organic solar cells. We investigate the simultaneous effect of localized surface plasmon resonance (LSPR), surface plasmon polariton (SPP), and waveguide plasmonic mode on silver nanowires, which have not been thoroughly explored before. By employing finite-difference time-domain (FDTD) simulations, we analyze the plasmonic resonance behavior of a ZnO/Silver nanowires/ZnO (ZAZ) electrode structure. Our investigations demonstrate the dominance of LSPR, leading to intense electric fields inside the nanowire and their propagation into the surrounding medium. Additionally, we observe the synergistic effects of SPP and waveguide plasmonic mode, contributing to enhanced light absorption within the active layer of the organic solar cell. This leads to an improvement in photovoltaic performance, as demonstrated by our previous work, showing an approximate 20% increase in photocurrent and overall power conversion efficiency of the organic solar cell. The incorporation of metallic nanostructures exhibiting these multiple plasmonic modes opens up new opportunities for improving light absorption and overall device efficiency. Our study highlights the potential of these combined plasmonic effects for the design and optimization of organic solar cells. Full article
(This article belongs to the Special Issue Optical Properties of Plasmonic/Photonic Nanosystems and Nanomaterials)
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12 pages, 4639 KiB  
Article
Trilayered Gires–Tournois Resonator with Ultrasensitive Slow-Light Condition for Colorimetric Detection of Bioparticles
by Jiwon Kang, Young Jin Yoo, Joo Hwan Ko, Abdullah Al Mahmud and Young Min Song
Nanomaterials 2023, 13(2), 319; https://doi.org/10.3390/nano13020319 - 12 Jan 2023
Cited by 6 | Viewed by 1514
Abstract
Over the past few decades, advances in various nanophotonic structures to enhance light–matter interactions have opened numerous opportunities for biosensing applications. Beyond the successful development of label-free nanophotonic biosensors that utilize plasmon resonances in metals and Mie resonances in dielectrics, simpler structures are [...] Read more.
Over the past few decades, advances in various nanophotonic structures to enhance light–matter interactions have opened numerous opportunities for biosensing applications. Beyond the successful development of label-free nanophotonic biosensors that utilize plasmon resonances in metals and Mie resonances in dielectrics, simpler structures are required to achieve improved sensor performance and multifunctionality, while enabling cost-effective fabrication. Here, we present a simple and effectual approach to colorimetric biosensing utilizing a trilayered Gires–Tournois (GT) resonator, which provides a sensitive slow-light effect in response to low refractive index (RI) substances and thus enables to distinguish low RI bioparticles from the background with spatially distinct color differences. For low RI sensitivity, by impedance matching based on the transmission line model, trilayer configuration enables the derivation of optimal designs to achieve the unity absorption condition in a low RI medium, which is difficult to obtain with the conventional GT configuration. Compared to conventional bilayered GT resonators, the trilayered GT resonator shows significant sensing performance with linear sensitivity in various situations with low RI substances. For extended applications, several proposed designs of trilayered GT resonators are presented in various material combinations by impedance matching using equivalent transmission line models. Further, comparing the color change of different substrates with low RI NPs using finite-difference time-domain (FDTD) simulations, the proposed GT structure shows surpassing colorimetric detection. Full article
(This article belongs to the Special Issue Optical Properties of Plasmonic/Photonic Nanosystems and Nanomaterials)
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