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Nanomaterials
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Plasmonic Nanostructures: Properties, Characterization, and Applications
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Plasmonic Nanostructures: Properties, Characterization, and Applications

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

Deadline for manuscript submissions: closed (31 December 2021) | Viewed by 7251

Special Issue Editor

Prof. Dr. Yiping Zhao

E-Mail Website
Guest Editor
Department of Physics and Astronomy, The University of Georgia, Athens, GA 30602, USA
Interests: nanostructure/thin film fabrication and characterization; metamaterials and plasmonic nanostructures; chemical and biological sensors; nano-photocatalysts; antimicrobial materials; nanomotors and their applications
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

In the past few decades, plasmonics has not only significantly advanced modern optics, but also empowered many applications beyond the physical science communities. Nevertheless, new understandings, materials, devices, and applications based on plasmonics keep on emerging. In this Special Issue of Nanomaterials, we aim to focus on the following specific areas of plasmonics:

  1. The fabrication of plasmonic structures, especially on new fabrication and design (for example, machine learning or AI-based) strategies, scale-up fabrications, novel self-assemble technologies, synthesis of hybrid plasmonics structures, etc.;
  2. Fundamental understanding of plasmonics and plasmon–materials interactions: new plasmonic phenomena, plasmonics of topological materials or structures, non-linear plasmonics, quantum plasmonics, plasmonics in 2D materials or other complicated materials systems, plasmon enhanced materials properties (in including 2D materials), etc.;
  3. Plasmonics-enhanced spectroscopy and its applications, including surface plasmon resonance, localized surface plasmon resonance, extraordinary optical transmission, surface enhanced Raman scattering, metal enhanced florescence, surface enhanced IR absorption spectroscopy, etc. and their applications in sensors, flexible electronics, etc.;
  4. The application of plasmonics and plasmon-enhanced materials properties in areas such as sensors, optical engineering, renewable energy, environmental science, drug delivery and disease treatment, etc.;
  5. Other plasmonics-related applications, such as plasmonic waveguides, circuits, plasmon laser, etc.

We warmly welcome original article and review submissions.

Dr. Yiping Zhao
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. 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

  • Plasmonic structure fabrication
  • Self-assembled plasmonic structures
  • Hybrid plasmonic structures
  • Plasmonic structure design
  • Plasmon enhanced spectroscopy
  • Plasmon enhanced material properties
  • Non-linear plasmonics
  • Quantum plasmonics
  • Plasmonic applications

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Published Papers (3 papers)

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Research

16 pages, 4099 KiB  
Article
Ultra-Low-Loss Mid-Infrared Plasmonic Waveguides Based on Multilayer Graphene Metamaterials
by Chia-Chien Huang, Ruei-Jan Chang and Ching-Wen Cheng
Nanomaterials 2021, 11(11), 2981; https://doi.org/10.3390/nano11112981 - 6 Nov 2021
Cited by 7 | Viewed by 2366
Abstract
Manipulating optical signals in the mid-infrared (mid-IR) range is a highly desired task for applications in chemical sensing, thermal imaging, and subwavelength optical waveguiding. To guide highly confined mid-IR light in photonic chips, graphene-based plasmonics capable of breaking the optical diffraction limit offer [...] Read more.
Manipulating optical signals in the mid-infrared (mid-IR) range is a highly desired task for applications in chemical sensing, thermal imaging, and subwavelength optical waveguiding. To guide highly confined mid-IR light in photonic chips, graphene-based plasmonics capable of breaking the optical diffraction limit offer a promising solution. However, the propagation lengths of these materials are, to date, limited to approximately 10 µm at the working frequency f = 20 THz. In this study, we proposed a waveguide structure consisting of multilayer graphene metamaterials (MLGMTs). The MLGMTs support the fundamental volume plasmon polariton mode by coupling plasmon polaritons at individual graphene sheets over a silicon nano-rib structure. Benefiting from the high conductivity of the MLGMTs, the guided mode shows ultralow loss compared with that of conventional graphene-based plasmonic waveguides at comparable mode sizes. The proposed design demonstrated propagation lengths of approximately 20 µm (four times the current limitations) at an extremely tight mode area of 10−6A0, where A0 is the diffraction-limited mode area. The dependence of modal characteristics on geometry and material parameters are investigated in detail to identify optimal device performance. Moreover, fabrication imperfections are also addressed to evaluate the robustness of the proposed structure. Moreover, the crosstalk between two adjacent present waveguides is also investigated to demonstrate the high mode confinement to realize high-density on-chip devices. The present design offers a potential waveguiding approach for building tunable and large-area photonic integrated circuits. Full article
(This article belongs to the Special Issue Plasmonic Nanostructures: Properties, Characterization, and Applications)
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12 pages, 3969 KiB  
Article
Impact of Nonlocality on Group Delay and Reflective Behavior Near Surface Plasmon Resonances in Otto Structure
by Lin Wang, Shangqing Liang, Yuanguo Zhou and Li-Gang Wang
Nanomaterials 2021, 11(7), 1780; https://doi.org/10.3390/nano11071780 - 8 Jul 2021
Cited by 1 | Viewed by 2024
Abstract
In this work, we study the effects of nonlocality on the optical response near surface plasmon resonance of the Otto structure, and such nonlocality is considered in the hydrodynamic model. Through analyzing the dispersion relations and optical response predicted by the Drude’s and [...] Read more.
In this work, we study the effects of nonlocality on the optical response near surface plasmon resonance of the Otto structure, and such nonlocality is considered in the hydrodynamic model. Through analyzing the dispersion relations and optical response predicted by the Drude’s and hydrodynamic model in the system, we find that the nonlocal effect is sensitive to the large propagation wavevector, and there exists a critical incident angle and thickness. The critical point moves to the smaller value when the nonlocal effect is taken into account. Before this point, the absorption of the reflected light pulse enhances; however, the situation reverses after this point. In the region between the two different critical points in the frequency scan calculated from local and nonlocal theories, the group delay of the reflected light pulse shows opposite behaviors. These results are explained in terms of the pole and zero phenomenological model in complex frequency plane. Our work may contribute to the fundamental understanding of light–matter interactions at the nanoscale and in the design of optical devices. Full article
(This article belongs to the Special Issue Plasmonic Nanostructures: Properties, Characterization, and Applications)
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15 pages, 5205 KiB  
Article
Optical Spin Hall Effect in Closed Elliptical Plasmonic Nanoslit with Noncircular Symmetry
by Xiaorong Ren, Xiangyu Zeng, Chunxiang Liu, Chuanfu Cheng, Ruirui Zhang, Yuqin Zhang, Zijun Zhan, Qian Kong, Rui Sun and Chen Cheng
Nanomaterials 2021, 11(4), 851; https://doi.org/10.3390/nano11040851 - 26 Mar 2021
Cited by 1 | Viewed by 2106
Abstract
We investigated the optical spin Hall effect (OSHE) of the light field from a closed elliptical metallic curvilinear nanoslit instead of the usual truncated curvilinear nanoslit. By making use of the characteristic bright spots in the light field formed by the noncircular symmetry [...] Read more.
We investigated the optical spin Hall effect (OSHE) of the light field from a closed elliptical metallic curvilinear nanoslit instead of the usual truncated curvilinear nanoslit. By making use of the characteristic bright spots in the light field formed by the noncircular symmetry of the elliptical slit and by introducing a method to separate the incident spin component (ISC) and converted spin component (CSC) of the output field, the OSHE manifested in the spot shifts in the CSC was more clearly observable and easily measurable. The slope of the elliptical slit, which was inverse along the principal axes, provided a geometric phase gradient to yield the opposite shifts of the characteristic spots in centrosymmetry, with a double shift achieved between the spots. Regarding the mechanism of this phenomenon, the flip of the spin angular momentum (SAM) of CSC gave rise to an extrinsic orbital angular momentum corresponding to the shifts of the wavelet profiles of slit elements in the same rotational direction to satisfy the conservation law. The analytical calculation and simulation of finite-difference time domain were performed for both the slit element and the whole slit ellipse, and the evolutions of the spot shifts as well as the underlying OSHE with the parameters of the ellipse were achieved. Experimental demonstrations were conducted and had consistent results. This study could be of great significance for subjects related to the applications of the OSHE. Full article
(This article belongs to the Special Issue Plasmonic Nanostructures: Properties, Characterization, and Applications)
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