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Optical Sensors Based on Micro/Nanostructured Materials
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Optical Sensors Based on Micro/Nanostructured Materials

A special issue of Sensors (ISSN 1424-8220). This special issue belongs to the section "Optical Sensors".

Deadline for manuscript submissions: closed (1 December 2022) | Viewed by 5557

Special Issue Editor

Dr. Georgios Tsigaridas

E-Mail Website
Guest Editor
Department of Physics, School of Applied Mathematical and Physical Sciences, National Technical University of Athens, Zografou Campus, GR-15780 Zografou, Athens, Greece
Interests: nanophotonics; nanophotonic sensors; bragg grating sensors; nonlinear optics; optical solitons; ultrafast lasers; optical trapping; material processing; nanofabrication; electromagnetic interactions of Dirac and Weyl particles
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

This Special Issue covers all topics related to the design, development, testing, and application of optical sensors based on microstructured and nanostructured materials, such as photonic crystals, photonic crystal fibers, plasmonic materials, etc. We are interested in all sorts of sensing applications, such as refractive index sensors, chemical sensors, environmental sensors (temperature, pressure, humidity), strain sensors, magnetic field sensors, etc. We are especially interested in biological sensors and their applications.

Both theoretical and experimental works will be considered, provided that they offer a significant contribution in this field. We are especially interested in research showcasing innovation, e.g., proposing a novel device/sensing principle for a specific application or field of applications. However, authors can also submit their work on substantial improvements/extensions of existing devices and/or methods, including novel applications for existing sensors.

Furthermore, review articles will also be considered, provided that they offer a comprehensive summary of the important developments in a specific field within the scope of this Special Issue.

Dr. Georgios Tsigaridas
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. Sensors 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
  • photonic sensors
  • micro/nano sensors
  • optical fiber sensors
  • plasmonic sensors
  • biological sensors
  • chemical sensors
  • refractive index sensors
  • environmental sensors
  • strain sensors

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Published Papers (2 papers)

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Research

10 pages, 5233 KiB  
Communication
On the Use of Haloalkane/Acrylate-Based Holographic Gratings as Compression and Rotation Sensors
by Riccardo Castagna, Cristiano Riminesi, Andrea Di Donato, Oriano Francescangeli and Daniele Eugenio Lucchetta
Sensors 2023, 23(1), 183; https://doi.org/10.3390/s23010183 - 24 Dec 2022
Cited by 2 | Viewed by 1491
Abstract
In this work, we test the effectiveness of using highly transparent holographic phase reflection and transmission volume gratings based on multifunctional acrylates as linear compression and rotation sensors. The gratings are recorded in a holographic mixture based on multi-reticulated acrylate and haloalkanes. To [...] Read more.
In this work, we test the effectiveness of using highly transparent holographic phase reflection and transmission volume gratings based on multifunctional acrylates as linear compression and rotation sensors. The gratings are recorded in a holographic mixture based on multi-reticulated acrylate and haloalkanes. To activate the photo-polymerization process, we used a mixture of 6-oxocamphore and rhodamine 6G. The mixture is a simplified version of the mixture used in previous works and shows some interesting features mainly in connection with the different roles played by the rhodamine 6G dye at different writing wavelengths λ = 532 nm and λ = 460 nm. Regarding reflection gratings, the maximum achieved diffraction efficiency is ≈50% and their use as linear compression sensors produces a shift in the reflection peak of 2 nm. Following the removal of compression, the grating slowly returns to the initial state. Regarding transmission gratings, the maximum achieved diffraction efficiency is ≈45% and they demonstrate very high sensitivity to even small rotations in a free-standing configuration. Full article
(This article belongs to the Special Issue Optical Sensors Based on Micro/Nanostructured Materials)
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13 pages, 3772 KiB  
Article
Photon-Trapping Microstructure for InGaAs/Si Avalanche Photodiodes Operating at 1.31 μm
by Hewei Zhang, Yang Tian, Qian Li, Wenqiang Ding, Xuzhen Yu, Zebiao Lin, Xuyang Feng and Yanli Zhao
Sensors 2022, 22(20), 7724; https://doi.org/10.3390/s22207724 - 12 Oct 2022
Cited by 6 | Viewed by 3452
Abstract
With the rapid development of photo-communication technologies, avalanche photodiode (APD) will play an increasingly important role in the future due to its high quantum efficiency, low power consumption, and small size. The monolithic integration of optical components and signal processing electronics on silicon [...] Read more.
With the rapid development of photo-communication technologies, avalanche photodiode (APD) will play an increasingly important role in the future due to its high quantum efficiency, low power consumption, and small size. The monolithic integration of optical components and signal processing electronics on silicon substrate chips is crucial to driving cost reduction and performance improvement; thus, the technical research on InGaAs/Si APD is of great significance. This work is the first to demonstrate the use of a photon-trapping (PT) structure to improve the performance of the InGaAs/Si APD based on an SOI substrate, which exhibits very high absorption efficiency at 1310 nm wavelength while the thickness of the absorption layer is kept at 800 nm. Based on the optical and electrical simulations, an optimized InGaAs/Si PT-APD is proposed, which exhibits a better performance and a higher responsivity compared to the original InGaAs/Si APD. Full article
(This article belongs to the Special Issue Optical Sensors Based on Micro/Nanostructured Materials)
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