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Optical Materials, Structures, and Devices

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

Deadline for manuscript submissions: 20 May 2025 | Viewed by 1289

Special Issue Editor


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Guest Editor
School of Natural (SNS), Massey University Albany, Auckland 0632, New Zealand
Interests: thin films; photoconductive detectors; scintillators; optical materials; vacuum ultraviolet laser materials; ultraviolet laser and amplifier systems; spectroscopy of rare earth-doped crystals and glasses
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

This Special Issue aims to publish new experimental and theoretical results as well as concise reviews relating to the broad field of optical materials, structures, and devices. The topics are not limited strictly to fundamental research. We also strongly encourage the submission of manuscripts focusing on the practical applications of optical materials, structures, and devices, including, but not limited to, lasers, optical sensors, scintillators, photovoltaics, light-emitting devices, phosphors, nanomaterials, thin films, and other related topics.

It is open to both original research articles and review articles covering the relevant progress in, but not limited to, the following fields:

  • Crystal growth technologies (bulks, fibres);
  • Fabrication and characterisation of transparent ceramics and glasses;
  • Synthesis and optical properties of nano- and microcrystals;
  • Thin films for optical applications;
  • Spectroscopy of luminescent materials;
  • Persistent luminescent materials;
  • Laser materials and laser systems;
  • Scintillator materials and mechanisms;
  • Light-emitting devices and phosphors;
  • Optical sensors;
  • Piezoelectric crystals and component design;
  • Nonlinear optical materials;
  • Magneto-optic materials;
  • Modelling and computational methods in luminescent materials;
  • Metamaterials;
  • Nanomaterials;
  • Nanostructures.

Dr. Marilou Cadatal Raduban
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. 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 2400 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 materials
  • structures
  • devices
  • nanomaterials
  • sensors
  • materials science

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Published Papers (2 papers)

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Research

7 pages, 2126 KiB  
Article
Application of Photo-Induced Chirality in Covert Authentication
by Konstantin B. Borisenko, Janaki Shanmugam, Andrew Luers, Paul Ewart, Benjamin A. O. Williams, Daniel W. Hewak, Rohanah Hussain, Tamás Jávorfi, Giuliano Siligardi and Angus I. Kirkland
Appl. Sci. 2024, 14(21), 9743; https://doi.org/10.3390/app14219743 - 24 Oct 2024
Viewed by 478
Abstract
A new technology to write and read covert information in authentication labels is described. This technology uses the phenomenon of photo-induced chirality in Ge2Sb2Te5 thin films to encode the left- or right-circular or linear polarization of the laser [...] Read more.
A new technology to write and read covert information in authentication labels is described. This technology uses the phenomenon of photo-induced chirality in Ge2Sb2Te5 thin films to encode the left- or right-circular or linear polarization of the laser beam used to write the label. The written polarization can be revealed by a simple reading device, which is demonstrated to provide the same qualitative information as reading based on cyclotron circular dichroism spectroscopy and imaging. The suggested method, while based on existing manufacturing approaches, offers a balance between technological complexity for writing and simplicity for reading, and may be advantageous as a new authentication technology. Full article
(This article belongs to the Special Issue Optical Materials, Structures, and Devices)
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13 pages, 5155 KiB  
Article
Electronic, Optical and Thermoelectric Properties of Two-Dimensional Molybdenum Carbon Mo2C-MXenes
by Doan Thi Kieu Anh, Pham Hong Minh, Kohei Yamanoi, Marilou Cadatal-Raduban, Luong Viet Mui, Do Minh Hieu and Nguyen Dai Hung
Appl. Sci. 2024, 14(20), 9257; https://doi.org/10.3390/app14209257 - 11 Oct 2024
Viewed by 567
Abstract
We investigate the structural, electronic, optical, and thermoelectric properties of three compositions of Mo2C-MXenes (Mo2CF2, Mo2C(OH)2, and Mo2CO2) from monolayer to multilayer by first principles calculation within Density Functional [...] Read more.
We investigate the structural, electronic, optical, and thermoelectric properties of three compositions of Mo2C-MXenes (Mo2CF2, Mo2C(OH)2, and Mo2CO2) from monolayer to multilayer by first principles calculation within Density Functional Theory (DFT) and Boltzmann transport theory. Firstly, the atomic structures of Mo2C-MXenes are optimized, and their respective structures are created with comparative research. Secondly, their electronic band structures and optical properties are studied in detail. The estimation of the bandgap energy of Mo2C-MXenes with its functionalization reveal that most Mo2CF2 and Mo2C(OH)2 layers are semiconductors, while Mo2CO2 behaves as a metal. The electrical and optical properties can be altered by controlling the on-surface functional groups and the number of layers. Computation of the thermoelectric (TE) properties of Mo2C-MXenes reveals that, upon heating to 600 K, Mo2CF2 and Mo2C(OH)2 exhibit a high Seebeck coefficient and a relatively high electrical conductivity. The Seebeck coefficient reaches ~400 µV K−1 at room temperature for all layers of Mo2CF2 MXenes. Our results prove that Mo2CF2 is considered a promising material for thermoelectric devices, while Mo2CO2 does not possess better thermoelectric performance. Mo2C-MXenes from monolayer to multilayer have outstanding properties, such as flexible bandgap energy and high thermal stability, making them promising candidates for many applications, including energy storage and electrode applications. Full article
(This article belongs to the Special Issue Optical Materials, Structures, and Devices)
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