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Nanomaterials
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Nanostructure-Based Plasmonic Sensing and Devices
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Nanostructure-Based Plasmonic Sensing and Devices

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

Deadline for manuscript submissions: closed (31 May 2023) | Viewed by 4292

Special Issue Editor

Dr. Hongyan Zou

E-Mail Website
Guest Editor
Key Laboratory on Luminescence and Real-Time Analytical Chemistry (Southwest University), Ministry of Education, Chongqing Key Laboratory of Biomedical Analysis (Southwest University), Chongqing Science & Technology Commission, College of Pharmaceutical Sciences, Southwest University, Chongqing, 400715, China
Interests: sensors; imaging; nanomedicine; photocatalysis

Special Issue Information

Dear Colleagues,

The rapid and sustained production of breakthroughs in the exciting field of plasmonics motivated us to solicit a Special Issue dedicated to “Nanostructure-Based Plasmonic Sensors and Devices”. Original research and review articles regarding the development of plasmonic nanostructures and their sensing applications are welcome. Research also focusing on plasmon–exciton interactions, plasmon-induced energy transfer, and plasmonic imaging are particularly encouraged. Topics of interest include, but are not limited to:

  • Design/synthesis of plasmonic nanostructures;
  • Plasmonic sensors;
  • Plasmonic devices;
  • Plasmon-exciton interactions;
  • Plasmon-induced energy transfer;
  • Plasmonic imaging.

Dr. Hongyan Zou
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 nanostructures
  • plasmonic sensors
  • plasmonic devices
  • plasmon-exciton interactions
  • plasmon-induced energy transfer
  • plasmonic imaging

Published Papers (4 papers)

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Research

11 pages, 3704 KiB  
Article
Plasmonic Cu2−xSe Mediated Colorimetric/Photothermal Dual-Readout Detection of Glutathione
by Guojuan Yan, Huanhuan Ni, Xiaoxiao Li, Xiaolan Qi, Xi Yang and Hongyan Zou
Nanomaterials 2023, 13(11), 1787; https://doi.org/10.3390/nano13111787 - 01 Jun 2023
Viewed by 1235
Abstract
Plasmonic nanomaterials have attracted great attention in the field of catalysis and sensing for their outstanding electrical and optical properties. Here, a representative type of nonstoichiometric Cu2−xSe nanoparticles with typical near-infrared (NIR) localized surface plasma resonance (LSPR) properties originating from their [...] Read more.
Plasmonic nanomaterials have attracted great attention in the field of catalysis and sensing for their outstanding electrical and optical properties. Here, a representative type of nonstoichiometric Cu2−xSe nanoparticles with typical near-infrared (NIR) localized surface plasma resonance (LSPR) properties originating from their copper deficiency was applied to catalyze the oxidation of colorless TMB into their blue product in the presence of H2O2, indicating they had good peroxidase-like activity. However, glutathione (GSH) inhibited the catalytic oxidation of TMB, as it can consume the reactive oxygen species. Meanwhile, it can induce the reduction of Cu(II) in Cu2−xSe, resulting in a decrease in the degree of copper deficiency, which can lead to a reduction in the LSPR. Therefore, the catalytic ability and photothermal responses of Cu2−xSe were decreased. Thus, in our work, a colorimetric/photothermal dual-readout array was developed for the detection of GSH. The linear calibration for GSH concentration was in the range of 1–50 μM with the LOD as 0.13 μM and 50–800 μM with the LOD as 39.27 μM. To evaluate the practicability of the assay, tomatoes and cucumbers were selected as real samples, and good recoveries indicated that the developed assay had great potential in real applications. Full article
(This article belongs to the Special Issue Nanostructure-Based Plasmonic Sensing and Devices)
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15 pages, 2911 KiB  
Article
Beyond Conventional Sensing: Hybrid Plasmonic Metasurfaces and Bound States in the Continuum
by Dominic Bosomtwi and Viktoriia E. Babicheva
Nanomaterials 2023, 13(7), 1261; https://doi.org/10.3390/nano13071261 - 03 Apr 2023
Cited by 7 | Viewed by 1923
Abstract
Fano resonances result from the strong coupling and interference between a broad background state and a narrow, almost discrete state, leading to the emergence of asymmetric scattering spectral profiles. Under certain conditions, Fano resonances can experience a collapse of their width due to [...] Read more.
Fano resonances result from the strong coupling and interference between a broad background state and a narrow, almost discrete state, leading to the emergence of asymmetric scattering spectral profiles. Under certain conditions, Fano resonances can experience a collapse of their width due to the destructive interference of strongly coupled modes, resulting in the formation of bound states in the continuum (BIC). In such cases, the modes are simultaneously localized in the nanostructure and coexist with radiating waves, leading to an increase in the quality factor, which is virtually unlimited. In this work, we report on the design of a layered hybrid plasmonic-dielectric metasurface that facilitates strong mode coupling and the formation of BIC, resulting in resonances with a high quality factor. We demonstrate the possibility of controlling Fano resonances and tuning Rabi splitting using the nanoantenna dimensions. We also experimentally demonstrate the generalized Kerker effect in a binary arrangement of silicon nanodisks, which allows for the tuning of the collective modes and creates new photonic functionalities and improved sensing capabilities. Our findings have promising implications for developing plasmonic sensors that leverage strong light-matter interactions in hybrid metasurfaces. Full article
(This article belongs to the Special Issue Nanostructure-Based Plasmonic Sensing and Devices)
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12 pages, 5680 KiB  
Article
Step-Index (Semi-Immersed) Model for Photonic Nanojet and Experimental Characterization via Near-Field Optical Microscopy with Microcylinder
by Tal Elbaz, Ankit Chauhan, Aviran Halstuch, Gil Shalev and Alina Karabchevsky
Nanomaterials 2023, 13(6), 1033; https://doi.org/10.3390/nano13061033 - 13 Mar 2023
Cited by 1 | Viewed by 1468
Abstract
Experimental limitations such as design complexity and low optical throughput have prevented photonic nanojet (PNJ) and photonic hook (PH) measurements from demonstrating and characterizing the implementation of narrow intense electromagnetic beams generated from dielectric microelements with circular symmetry. Near-fields optical microscopy can mitigate [...] Read more.
Experimental limitations such as design complexity and low optical throughput have prevented photonic nanojet (PNJ) and photonic hook (PH) measurements from demonstrating and characterizing the implementation of narrow intense electromagnetic beams generated from dielectric microelements with circular symmetry. Near-fields optical microscopy can mitigate these limitations and still present a capability of detecting a highly localized electromagnetic beam for applications in step-index media. Here we model a localized PNJ and PH formation in step-index media. We show that despite negligible refractive index contrast between the water (nwater=1.33) and silica microcylinder (∼1.1), a formation of PNJ and PH is observed with equivalent performance compared to that of silica microcylinder embedded in air (nair=1). This model features a practical fiber source and silica microcylinder as an auxiliary structure. Simultaneously, we performed experimental characterization of a photonic nanojet generated from an optical fiber and studied the resulting near-fields. Our electromagnetic simulation results are in good agreement with the experimental ones, demonstrating a full width at half maximum (FHWM) with a relative error of 0.64%. This system will make fiber-based nanojet realization and characterization accessible and practical for optics and laser engineering applications, super-resolution imaging, and nanolithography. Full article
(This article belongs to the Special Issue Nanostructure-Based Plasmonic Sensing and Devices)
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13 pages, 1745 KiB  
Article
Highly Sensitive Plasmonic Structures Utilizing a Silicon Dioxide Overlayer
by Jakub Chylek, Petra Maniakova, Petr Hlubina, Jaroslav Sobota and Dusan Pudis
Nanomaterials 2022, 12(18), 3090; https://doi.org/10.3390/nano12183090 - 06 Sep 2022
Cited by 3 | Viewed by 1092
Abstract
In this paper, simple and highly sensitive plasmonic structures are analyzed theoretically and experimentally. A structure comprising a glass substrate with a gold layer, two adhesion layers of chromium, and a silicon dioxide overlayer is employed in liquid analyte sensing. The sensing properties [...] Read more.
In this paper, simple and highly sensitive plasmonic structures are analyzed theoretically and experimentally. A structure comprising a glass substrate with a gold layer, two adhesion layers of chromium, and a silicon dioxide overlayer is employed in liquid analyte sensing. The sensing properties of two structures with distinct protective layer thicknesses are derived based on a wavelength interrogation method. Spectral reflectance responses in the Kretschmann configuration with a coupling BK7 prism are presented, using the thicknesses of individual layers obtained by a method of spectral ellipsometry. In the measured spectral reflectance, a pronounced dip is resolved, which is strongly red-shifted as the refractive index (RI) of the analyte increases. Consequently, a sensitivity of 15,785 nm per RI unit (RIU) and a figure of merit (FOM) of 37.9 RIU−1 are reached for the silicon dioxide overlayer thickness of 147.5 nm. These results are in agreement with the theoretical ones, confirming that both the sensitivity and FOM can be enhanced using a thicker silicon dioxide overlayer. The designed structures prove to be advantageous as their durable design ensures the repeatability of measurement and extends their employment compared to regularly used structures for aqueous analyte sensing. Full article
(This article belongs to the Special Issue Nanostructure-Based Plasmonic Sensing and Devices)
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