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XLIM Research Institute, UMR 7252, CNRS/University of Limoges, Avenue Albert Thomas, 87060 Limoges, France
Interests: nanophotonics; plasmonics; optical biosensors; fibre optics; 2D materials
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Dr. Anne-Laure Baudrion

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Light, Nanomaterials, Nanotechnologies (L2n) Laboratory, CNRS ERL 7004, University of Technology of Troyes, 12 rue Marie Curie, F-10004 Troyes, CEDEX, France
Interests: nano-optics; nanospectroscopy; plasmonics; non-linear plasmonics; active plasmonics

Dr. Yuye Wang

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Institute of Biomedical and Health Engineering, Shenzhen Institutes of Advanced Technology, Chinese Academy of Science, Shenzhen, China
Interests: optical biosensing; plasmonics; lab-on-a-chip; droplet microfluidics

Special Issue Information

Dear Colleagues,

Recent decades have witnessed the rapid development of nanoplasmonic sensors in a variety of application scenarios such as clinical diagnostics, food safety and environmental monitoring, etc. Motivated by the recent advances in micro- and nano-fabrication technologies, many researchers have exploited nanostructured devices and systems for nanoplasmonic sensors. The design and fabrication of novel micro- or nanostructures can greatly enhance the performance of nanoplasmonic sensors, increase the level of integration and provide new opportunities for multiplexed sensing applications. The aim of this Special Issue is to explore and report the recent progress in the design, fabrication and various applications related to nanoplasmonic sensors. This may include the enhancement in sensor performance enabled by the design and fabrication of novel nanostructures with plasmonic properties, the construction of portable microfluidic devices integrated with plasmonic sensors, as well as the demonstration of their potential in biological, chemical and clinical applications.

In this Special Issue, original research articles and reviews are welcome. Research areas may include (but not limited to) the following:

Micro-nano devices and systems for sensing applications;
Novel optical sensing systems;
Optical biosensors;
2D-materials-assisted plasmonic sensors;
Novel design and fabrication of plasmonic devices;
Novel lab-on-a-chip devices.

Dr. Shuwen Zeng
Dr. Anne-Laure Baudrion
Dr. Yuye Wang
Guest Editors

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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 2600 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

optical sensors
plasmonic devices
nanosensors
surface plasmon resonance sensors
2D-materials-assisted sensors
micro-nano fabrication
lab-on-a-chip devices

Published Papers (2 papers)

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Research

Open AccessArticle

Asymmetrical Dimer Photonic Crystals Enabling Outstanding Optical Sensing Performance

and

Nanomaterials 2023, 13(3), 375; https://doi.org/10.3390/nano13030375 - 17 Jan 2023

Viewed by 545

Abstract

The exploration of the propensity of engineered materials to bring forward innovations predicated on their periodic nanostructured tailoring rather than the features of their individual compounds is a continuous pursuit that has propelled optical sensors to the forefront of ultra-sensitive bio-identification. Herein, a numerical analysis based on the Finite Element Method (FEM) was used to investigate and optimize the optical properties of a unidirectional asymmetric dimer photonic crystal (PhC). The proposed device has many advantages from a nanofabrication standpoint compared to conventional PhCs sensors, where integrating defects within the periodic array is imperative. The eigenvalue and transmission analysis performed indicate the presence of a protected, confined mode within the structure, resulting in a Fano-like response in the prohibited states. The optical sensor demonstrated a promising prospect for monitoring the DNA hybridization process, with a quality factor (QF) of roughly

1.53 \times 10^{5}

and a detection limit (DL) of

4.4 \times 10^{- 5}

RIU. Moreover, this approach is easily scalable in size while keeping the same attributes, which may potentially enable gaze monitoring. Full article

(This article belongs to the Special Issue Advances in Nanoplasmonic Sensors: Fabrication, Design and Perspectives)

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Open AccessArticle

Sensitivity Enhanced Plasmonic Biosensor Using Bi₂Se₃-Graphene Heterostructures: A Theoretical Analysis

and

Nanomaterials 2022, 12(22), 4078; https://doi.org/10.3390/nano12224078 - 19 Nov 2022

Cited by 2 | Viewed by 628

Abstract

This study provided a theoretical insight for designing novel plasmonic biosensors using bismuth selenide (Bi₂Se₃)-Graphene heterostructures. It was a van der Waals (vdWs) stacked configuration composed of gold (Au) film, few quintuple layer (QL) Bi₂Se₃ and few-layered graphene. In particular, the proposed biosensor was created by Goos-Hänchen (GH) shift rather than phase, resulting in a more sensitive biosensing response. Under the excitation of 632.8 nm, significant sensitivity enhancement performance was obtained via varying the thickness of Bi₂Se₃-Graphene heterostructures. The best configuration was 32 nm Au film−2-QL Bi₂Se₃-3-layer graphene, generating the largest GH shift, as high as −1.0202 × 10⁴ µm. Moreover, the highest detection sensitivity was determined to be 8.5017 × 10⁶ µm/RIU, responding to a tiny refractive index (RI) change of 0.0012 RIU (RIU, refractive index unit). More importantly, our proposed biosensor has shown a theoretical feasibility of monitoring virus samples. For example, there was an efficient linear detection range for severe acute respiratory syndrome coronavirus 2 (SARS-CoV−2, 0~13.44 nanomole (nM)) and its Spike (S) glycoprotein (0~59.74 nM), respectively. It is expected that our proposed plasmonic biosensor has a potential application in performing sensitive detection of SARS-CoV−2. Full article

(This article belongs to the Special Issue Advances in Nanoplasmonic Sensors: Fabrication, Design and Perspectives)

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Planned Papers

The below list represents only planned manuscripts. Some of these manuscripts have not been received by the Editorial Office yet. Papers submitted to MDPI journals are subject to peer-review.

Authors: Weifang Yang 1,2, Jie Shao 2, Yuting Zhang 2, Wentao Zhang 2 and Yi Xu 2

Affiliations: 1. School of Electronic Engineering and Automation, Guilin University of Electronic Technology, Guilin 541004, China; 2. Guangxi Key Laboratory of Optoelectronic Information Processing, School of Optoelectronic Engineering, Guilin University of Electronic Technology, Guilin 541004, China;

Title: Highly sensitive plasmonic refractive index sensors based on SnSe enhanced Goos-Hänchen shifts

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