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Sol-Gel Materials for Optics and Photonics: Design, Processing, Characterization, and Implementation

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

Deadline for manuscript submissions: 20 September 2024 | Viewed by 1260

Special Issue Editors

Dr. Magdalena Zięba

E-Mail Website
Guest Editor
Department of Optoelectronics, Silesian University of Technology, B. Krzywoustego 2, 44-100 Gliwice, Poland
Interests: integrated optics; sol-gel materials; dip-coating technique optical waveguide film; rare-earth luminescence
Dr. Andrzej Kaźmierczak

E-Mail Website
Guest Editor
Institute of Microelectronics and Optoelectronics, Warsaw University of Technology, Koszykowa 75, 00-662, Warszawa, Poland
Interests: integrated photonics devices; circuits and systems for multiple applications
Special Issues, Collections and Topics in MDPI journals
Prof. Dr. Paweł Karasiński

E-Mail Website
Guest Editor
Department of Optoelectronics, Silesian University of Technology, B. Krzywoustego 2, 44-100 Gliwice, Poland
Interests: integrated optics; planar waveguide films; sol-gel method; optical sensors; evanescent field spectroscopy; grating couplers; antireflective coatings
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

Sol-gel technology is advantageous when developing materials from liquid rather than gaseous phases (such as in various CVD technologies). This process allows for the precise administration of the necessary compounds, while drastically reducing equipment costs (this is possible when replacing the gas flow control used in CVD via the weighting of sol components). Consequently, Sol-gel-derived techniques can be applied for the successful and low-cost procurement of numerous optical and photonic components, including antireflective coatings, multilayer structures, or waveguide films to name a few.

In this Special Issue, we invite you to submit your innovative  research on the design, processing, characterisation, and application of sol-gel materials. The scope of this Special Issue covers the development of material systems, leading to improved optical properties, processes easing, and cost reductions for optic and photonic components and systems. Papers covering the design and characterisation of sol-gel-derived optical and photonic devices and systems are also welcome. We welcome both original research papers and in-depth reviews.

Dr. Magdalena Zięba
Dr. Andrzej Kaźmierczak
Prof. Dr. Paweł Karasiński
Guest Editors

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

  • waveguide films
  • antireflective coatings
  • multilayer structures
  • integrated photonics/optics
  • photonic devices
  • fabrication technologies
  • optical materials
  • sol-gel materials

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Published Papers (2 papers)

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Research

19 pages, 3221 KiB  
Article
Crystal Structural Characteristics and Electrical Properties of Novel Sol-Gel Synthesis of Ceramic Bi0.75Ba0.25(FeMn)0.5O3
by Faouzia Tayari, Ramzi Dhahri, Elkenany Brens Elkenany, Sílvia Soreto Teixeira, Manuel Pedro Fernandes Graça, A. M. Al-Syadi, Manel Essid and Kais Iben Nassar
Materials 2024, 17(15), 3797; https://doi.org/10.3390/ma17153797 - 1 Aug 2024
Viewed by 451
Abstract
In this investigation, our primary objective is to explore the structural, morphological, and electrical characteristics of Bi0.75Ba0.25(FeMn)0.5O3 ceramic material synthesized by the sol-gel method. The prepared sample underwent synthesis through the conventional sol-gel technique. Examination through [...] Read more.
In this investigation, our primary objective is to explore the structural, morphological, and electrical characteristics of Bi0.75Ba0.25(FeMn)0.5O3 ceramic material synthesized by the sol-gel method. The prepared sample underwent synthesis through the conventional sol-gel technique. Examination through X-ray diffraction (XRD) unveiled a well-defined rhombohedral structure within the R3´C space group. Moreover, to evaluate the purity and nano-grain morphology, we utilized energy dispersive spectroscopy (EDX) and scanning electron microscopy (SEM). Electrical assessments were carried out over a frequency span of 100 Hz to 1 MHz and temperatures ranging from 200 to 340 K. Employing the correlated barrier hopping (CBH) model, we analyzed the AC conductivity of our specimen. The activation energy, determined from both DC conductivity and impedance spectra, demonstrated close correspondence, suggesting that both conductivity and r laxation processes are influenced by similar factors. Notably, the dielectric properties hold significant importance, potentially rendering our sample suitable for electronic applications. Furthermore, we calculated thermodynamic parameters, such as enthalpy (ΔH), entropy change (ΔS), and free energy of activation (ΔF), offering deeper insights into the material’s behavior and conductivity mechanisms. Full article
(This article belongs to the Special Issue Sol-Gel Materials for Optics and Photonics: Design, Processing, Characterization, and Implementation)
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15 pages, 4683 KiB  
Article
Demonstration of the Optical Isotropy of TiO2 Thin Films Prepared by the Sol–Gel Method
by Jacek Nizioł, Magdalena Zięba, Maciej Śniechowski, Ewa Gondek, Wojciech Pakieła and Paweł Karasiński
Materials 2024, 17(14), 3391; https://doi.org/10.3390/ma17143391 - 9 Jul 2024
Viewed by 547
Abstract
Titanium dioxide (TiO2) thin films prepared by the sol–gel technique have been shown to be optically isotropic and, unlike the films obtained by competitive methods, do not exhibit measurable birefringence. A series of submicrometer-thin titanium dioxide films were prepared using the [...] Read more.
Titanium dioxide (TiO2) thin films prepared by the sol–gel technique have been shown to be optically isotropic and, unlike the films obtained by competitive methods, do not exhibit measurable birefringence. A series of submicrometer-thin titanium dioxide films were prepared using the sol–gel technique and then thermally annealed at different temperatures. The samples were analyzed by spectroscopic ellipsometry using the Mueller matrix formalism, X-ray diffractometry and scanning electron microscopy. The conversion of amorphous titanium dioxide to polycrystalline anatase occurred at 400 °C or higher. Crystallites of a few percent of the film thickness were observed. Nevertheless, the crystallization process did not trigger the appearance of birefringence. These observations demonstrate that high-quality planar optical waveguides can be successfully fabricated on flexible substrates, in particular those composed of efficient polymers that can withstand the aforementioned temperatures. Full article
(This article belongs to the Special Issue Sol-Gel Materials for Optics and Photonics: Design, Processing, Characterization, and Implementation)
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