Special Issue "Optical Sensors and Gauges Based on Plasmonic Resonance"

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

Deadline for manuscript submissions: 30 September 2021.

Special Issue Editor

Prof. Dr. Francisco Pérez-Ocón
E-Mail Website
Guest Editor
Department of Optics, University of Granada, 18071 Granada, Spain
Interests: optical sensing; SPR sensors and gauges

Special Issue Information

Dear Colleagues,

Plasmonic sensors are the object of continuous, dynamic, fundamental, and applied research today.

Every day, sensors based on surface plasmon resonance (SPR) are used more and more in a great variety of new applications and developments, for instance, in engineering, physics, chemistry, biotechnology, environment, medicine, etc. They have been shown to have a high sensitivity and resolution and to be able to integrate easily since they are in the dimensions of nano-optics.

In this Special Issue, both theoretical and experimental research will be considered, provided they offer new knowledge or substantial improvements in the field of SPR. In more detail, articles should describe new detection techniques or substantial improvements over an existing one or a major new application of an existing method. All types of plasmonic sensors will be considered in applications (physical sensors, chemical sensors, biological sensors, environmental sensors, etc.), sensor elements (new materials, new combinations of materials, dopants, new structures, etc.), plasmonic structures, functionalization protocols for metallic surfaces, or any other innovation in the field of plasmonic sensors. Due to the pandemic and the rapid proliferation of COVID-19, research on SPR sensors related to the detection of SARS-CoV-2 will also be considered.

An essential factor in terms of acceptance of a submitted manuscript will be the innovation it brings, as well as its potential for practical applications.

I encourage you to contribute to this Special Issue through research, design, development, and applications outlined in articles that demonstrate the most recent advances in plasmonic sensors with new scientific knowledge, designs, and their practical applications.

Prof. Dr. Francisco Pérez-Ocón
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 papers will be 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 2000 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

  • surface plasmon resonance
  • localized surface plasmon
  • SPR sensor
  • novel applications of plasmonic sensors

Published Papers (2 papers)

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Research

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Article
Surface Plasmon Resonance Sensor of CO2 for Indoors and Outdoors
Appl. Sci. 2021, 11(15), 6869; https://doi.org/10.3390/app11156869 - 26 Jul 2021
Viewed by 198
Abstract
The ability to detect CO2 with the smallest possible devices, equipped with alarms and having great precision, is vital for human life, whether indoors or outdoors. It is essential to know if we are being subjected to this gas to establish the [...] Read more.
The ability to detect CO2 with the smallest possible devices, equipped with alarms and having great precision, is vital for human life, whether indoors or outdoors. It is essential to know if we are being subjected to this gas to establish the level of ventilation in factories, houses, classrooms, etc., and to be protected against viruses or dangerous gas concentrations. Equally, when we are in the countryside, it is useful to be able to evaluate if the greenhouse effect, caused by this gas, is increasing. We propose a surface plasmon resonance (SPR) sensor for the measurement of CO2 concentrations taking into account that the refractive index of carbon dioxide depends on temperature, humidity, pressure, etc. With our sensor we can measure (in air) in any type of environment and concentration. Our sensor has a resolution of 5.15 × 10−5 RIU and a sensitivity of 19.4 RIU−1 for 400 ppm. Full article
(This article belongs to the Special Issue Optical Sensors and Gauges Based on Plasmonic Resonance)
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Review

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Review
Gas Sensors Based on Localized Surface Plasmon Resonances: Synthesis of Oxide Films with Embedded Metal Nanoparticles, Theory and Simulation, and Sensitivity Enhancement Strategies
Appl. Sci. 2021, 11(12), 5388; https://doi.org/10.3390/app11125388 - 10 Jun 2021
Viewed by 494
Abstract
This work presents a comprehensive review on gas sensors based on localized surface plasmon resonance (LSPR) phenomenon, including the theory of LSPR, the synthesis of nanoparticle-embedded oxide thin films, and strategies to enhance the sensitivity of these optical sensors, supported by simulations of [...] Read more.
This work presents a comprehensive review on gas sensors based on localized surface plasmon resonance (LSPR) phenomenon, including the theory of LSPR, the synthesis of nanoparticle-embedded oxide thin films, and strategies to enhance the sensitivity of these optical sensors, supported by simulations of the electromagnetic properties. The LSPR phenomenon is known to be responsible for the unique colour effects observed in the ancient Roman Lycurgus Cup and at the windows of the medieval cathedrals. In both cases, the optical effects result from the interaction of the visible light (scattering and absorption) with the conduction band electrons of noble metal nanoparticles (gold, silver, and gold–silver alloys). These nanoparticles are dispersed in a dielectric matrix with a relatively high refractive index in order to push the resonance to the visible spectral range. At the same time, they have to be located at the surface to make LSPR sensitive to changes in the local dielectric environment, the property that is very attractive for sensing applications. Hence, an overview of gas sensors is presented, including electronic-nose systems, followed by a description of the surface plasmons that arise in noble metal thin films and nanoparticles. Afterwards, metal oxides are explored as robust and sensitive materials to host nanoparticles, followed by preparation methods of nanocomposite plasmonic thin films with sustainable techniques. Finally, several optical properties simulation methods are described, and the optical LSPR sensitivity of gold nanoparticles with different shapes, sensing volumes, and surroundings is calculated using the discrete dipole approximation method. Full article
(This article belongs to the Special Issue Optical Sensors and Gauges Based on Plasmonic Resonance)
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