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Photonic Sensor Materials: Properties and Applications
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Photonic Sensor Materials: Properties and Applications

A special issue of Materials (ISSN 1996-1944). This special issue belongs to the section "Optical and Photonic Materials".

Deadline for manuscript submissions: closed (20 January 2024) | Viewed by 5249

Special Issue Editor

Dr. Piotr Lesiak

E-Mail Website
Guest Editor
Faculty of Physics, Warsaw University of Technology, 00-662 Warszawa, Poland
Interests: propagation, spectral and polarization properties of liquid crystals and optical fibers; optical fiber sensors systems embedded in composite materials; nanomaterials and optofluidic photonic devices
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

Photonics is closely related to the technology of generating and using light and other forms of radiant energy whose quantum unit is the photon. Photonics involves a wide range of applications of lasers, optics, solid-state lighting, fiber optics, electro-optical devices, and inter alia photonic sensors.

This Special Issue aims to present recent advances in photonic sensors based on different configurations and materials that can be used in numerous and diverse fields of technology as alternate energy, manufacturing, health care, telecommunication, environmental monitoring, homeland security, and aerospace.

The applications of photonic sensors may cover many areas, ranging from new concepts still experienced in laboratories to sensing systems to be made available on the market, even in highly differentiated sectors, such as biomedicine and biotechnology, micro- and nanotechnology, construction and engineering, alternate energy and green solutions, chemical technology, transportation, gas sensing, defense, space, and so on.

We invite you to submit a manuscript(s) for this Special Issue. Full papers, communications, and reviews will be more than welcome.

Dr. Piotr Lesiak
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. Materials 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

  • sensors
  • photonics
  • plasmonics
  • nanomaterials
  • liquid crystals
  • optofluidics
  • security
  • optical fiber sensors
  • environmental monitoring

Related Special Issue

Published Papers (4 papers)

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Research

11 pages, 2454 KiB  
Article
Dual Role of Beam Polarization and Power in Nematic Liquid Crystals: A Comprehensive Study of TE- and TM-Beam Interactions
by Michał Kwaśny, Bartłomiej Wojciech Klus and Urszula Anna Laudyn
Materials 2024, 17(5), 999; https://doi.org/10.3390/ma17050999 - 22 Feb 2024
Cited by 1 | Viewed by 577
Abstract
Optical spatial solitons are self-guided wave packets that maintain their transverse profile due to the self-focusing effect of light. In nematic liquid crystals (NLC), such light beams, called nematicons, can be induced by two principal mechanisms: light-induced reorientation of the elongated molecules and [...] Read more.
Optical spatial solitons are self-guided wave packets that maintain their transverse profile due to the self-focusing effect of light. In nematic liquid crystals (NLC), such light beams, called nematicons, can be induced by two principal mechanisms: light-induced reorientation of the elongated molecules and thermal changes in the refractive index caused by partial light absorption. This paper presents a detailed investigation of the propagation dynamics of light beams in nematic liquid crystals (NLCs) doped with Sudan Blue dye. Building on the foundational understanding of reorientational and thermal solitons in NLCs and the effective breaking of the action–reaction principle in spatial solitons, this study examines the interaction of infrared (IR) and visible beams in a [-4-(trans-4′-exylcyclohexyl)isothiocyanatobenzene] (6CHBT) NLC. Our experimental results highlight the intricate interplay of beam polarizations, power levels, and the nonlinear properties of NLCs, offering new insights into photonics and nonlinear optics in liquid crystals. Full article
(This article belongs to the Special Issue Photonic Sensor Materials: Properties and Applications)
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11 pages, 2409 KiB  
Article
Dual-Period Polarization-Dependent Diffraction Gratings Based on a Polymer-Stabilized Liquid Crystal
by Marta Kajkowska, Miłosz Sławomir Chychłowski, Sławomir Ertman and Piotr Lesiak
Materials 2023, 16(23), 7313; https://doi.org/10.3390/ma16237313 - 24 Nov 2023
Viewed by 865
Abstract
In this paper, we demonstrate the first ever dual-period diffraction gratings that do not require electrical tuning to obtain the effect of period change. Our method allows for multiplication of the base period by proper modification of the subsequent slits of the grating. [...] Read more.
In this paper, we demonstrate the first ever dual-period diffraction gratings that do not require electrical tuning to obtain the effect of period change. Our method allows for multiplication of the base period by proper modification of the subsequent slits of the grating. The proposed elements are fabricated by selective photopolymerization of a composite based on a nematic liquid crystal. The gratings are formed by polymer stabilization of a liquid crystal in different orientations of the molecules in selected grating slits to allow for period manipulation. The operating principle is based on changing the phase delay introduced by the slits depending on polarization direction of incident light with respect to the director in each type of slit, which allows to change the grating’s period. The proposed technique was successfully utilized to obtain diffraction gratings with either doubling or tripling of the period. Full article
(This article belongs to the Special Issue Photonic Sensor Materials: Properties and Applications)
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11 pages, 2821 KiB  
Article
Surface Relief Modulated Grating in Azo Polymer—From the Tailoring of Diffraction Order to Reshaping of a Laser Beam
by Anna Kozanecka-Szmigiel, Aleksandra Hernik, Katarzyna Rutkowska, Jolanta Konieczkowska, Ewa Schab-Balcerzak and Dariusz Szmigiel
Materials 2022, 15(22), 8088; https://doi.org/10.3390/ma15228088 - 15 Nov 2022
Cited by 4 | Viewed by 1616
Abstract
Among light-responsive materials for photonics, azo polymers occupy an important position due to their optical response and the related concepts of consecutive applications. However, scientific insight is still needed to understand the effects of irradiation on the modification of the azo polymer structure [...] Read more.
Among light-responsive materials for photonics, azo polymers occupy an important position due to their optical response and the related concepts of consecutive applications. However, scientific insight is still needed to understand the effects of irradiation on the modification of the azo polymer structure and the effect of this modification on incoming probing light. In this work, we report on a surface relief grating with a maximum depth of a record-high value of 1.7 µm, inscribed holographically in a custom synthesized glassy azo polymer belonging to the poly(ether imide) family. We show that the specifically deformed polymer, forming an amplitude-modulated relief grating, has a unique dual effect on an incoming light beam of different diameters. When illuminated by a narrow probe beam, the structure acts as a variable-depth grating, enabling a continuous tuning of the diffraction efficiencies in the entire theoretically predicted range and, thus, generating or eliminating diffracted waves of specified order. Alternatively, when illuminated by a wide probe beam, the whole structure acts as an optical component reshaping the Gaussian light intensity profile into the profiles resembling the squares of Bessel functions of the zeroth- or higher orders. Moreover, a physical justification of the effects observed is provided. Full article
(This article belongs to the Special Issue Photonic Sensor Materials: Properties and Applications)
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12 pages, 4518 KiB  
Article
A Gaussian to Vector Vortex Beam Generator with a Programmable State of Polarization
by Jacek Piłka, Michał Kwaśny, Adam Filipkowski, Ryszard Buczyński, Mirosław A. Karpierz and Urszula A. Laudyn
Materials 2022, 15(21), 7794; https://doi.org/10.3390/ma15217794 - 4 Nov 2022
Cited by 1 | Viewed by 1703
Abstract
We study an optical device designed for converting the polarized Gaussian beam into an optical vortex of tunable polarization. The proposed device comprised a set of three specially prepared nematic liquid crystal cells and a nano-spherical phase plate fabricated from two types of [...] Read more.
We study an optical device designed for converting the polarized Gaussian beam into an optical vortex of tunable polarization. The proposed device comprised a set of three specially prepared nematic liquid crystal cells and a nano-spherical phase plate fabricated from two types of glass nanotubes. This device generates a high-quality optical vortex possessing one of the multiple polarization states from the uniformly polarized input Gaussian beam. Its small size, simplicity of operation, and electrical steering can be easily integrated into the laboratory and industrial systems, making it a promising alternative to passive vortex retarders and spatial light modulators. Full article
(This article belongs to the Special Issue Photonic Sensor Materials: Properties and Applications)
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