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The 15th Anniversary of Materials—Recent Advances in Optical and Photonic Materials

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

Deadline for manuscript submissions: closed (31 December 2023) | Viewed by 4623

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Prof. Dr. Valery V. Tuchin

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1. Institute of Physics and Science Medical Center, Saratov State University, Saratov, Russia
2. Laboratory of Laser Molecular Imaging and Machine Learning, Tomsk State University, Tomsk, Russia
3. А.N. Bach Institute of Biochemistry, FRC “Fundamentals of Biotechnology”, Moscow, Russia
Interests: biological and medical physics; biophotonics; biomaterials, laser spectroscopy; laser and optical systems; optical and laser measurements; nanobiophotonics; terahertz dielectric spectroscopy and microscopy; LIBS; phototherapy
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Special Issue Information

Dear Colleagues,

Fifteen years have passed since the foundation of Materials. In connection with the large flow of articles on optical topics, a special Section on Optics and Photonics was created several years ago. Each quarter, up to 50 articles are published in this Section, which covers a wide range of topics in materials science, including innovative materials for lasers, light guides, sensors, thin films, solar cells, magnetic and plasmonic materials, metamaterials, etc., capable of operating in various wavelength ranges from X-ray/UV, VIS/IR and further to the terahertz range.

At the same time, optical technologies provide precision processing of all types of materials using widely used methods such as photolithography, laser printing and engraving, laser ablation to obtain nanomaterials, etc. Nowadays, it is difficult to characterize new materials without optical technologies; all types of spectroscopy and microscopy are widely used to test materials of various nature and state of aggregation. Confocal microscopy, Raman spectroscopy, optical coherence tomography, multiphoton microscopy, LIBS, polarization methods, speckle technologies, and dynamic light scattering methods and their combinations are effective and affordable tools in many laboratories around the world.

Biomedical optics and biophotonics is another rapidly developing interdisciplinary field that requires innovative biocompatible materials for implants, tissue phantoms, pathological cell labeling, cell and organ printing, light delivery to internal organs, etc. In addition, the complex biological tissue itself is an object of study in terms of investigation of its unique mechanical, electrical, molecular, optical, and atomic properties.

This Special Issue will present and discuss modern advances and trends in the development of optics and photonics of various materials, as well as the features of the interaction of optical radiation with these materials, including nanomaterials, metamaterials, and biological materials. The collected articles will contribute to the promotion of promising ideas for the creation of new smart and controlled materials with unusual properties, which are urgently needed in modern industry and medicine.

It is my great pleasure to invite you to submit a manuscript to this Special Issue. Full articles, letters, tutorials, and reviews are welcome.

Prof. Dr. Valery V. Tuchin
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

photonic crystals
micro- and nanostructured materials
plasmonic nanoparticles
magnetic materials
microcapsules
photoacoustics
optical imaging
optical elastography
lasers
LIBS
LEDs
waveguides
UV
terahertz
laser printing
tissues and cells
tissue phantoms
contrast agents
optical clearing
drug delivery
optogenetics
implants
regenerative materials
molecule diffusion
tissue regeneration
photodynamic therapy
photothermolysis
laser therapy

Published Papers (4 papers)

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Research

16 pages, 5545 KiB

Open AccessArticle

Polarization Characterization of Porous Particles Based on DDA Simulation and Multi-Angle Polarization Measurements

by Shuan Yao, Heng Zhang, Nan Zeng, Hui Ma, Honghui He and Yuelu Jiang

Materials 2024, 17(8), 1718; https://doi.org/10.3390/ma17081718 - 09 Apr 2024

Viewed by 327

Abstract

Porous suspended particles are hazardous to human health due to their strong absorption capacity for toxic substances. A fast, accurate, in situ and high-throughput method to characterize the microporous structure of porous particles has extensive application value. The polarization changes during the light scattering of aerosol particles are highly sensitive to their microstructural properties, such as pore size and porosity. In this study, we propose an overlapping sphere model based on the discrete dipole approximation (DDA) to calculate the polarization scattering characteristics of porous particles. By combining scattering calculations with multi-dimensional polarization indexes measured by a multi-angle polarized scattering vector detection system, we achieve the identification and classification of pore-type components in suspended particles. The maximum deviation based on multiple indexes is less than 0.16% for the proportion analysis of mixed particles. Simultaneously, we develop a quantitative inversion algorithm on pore size and porosity. The inversion results of the three porous polymer particles support the validity and feasibility of our method, where the inversion error of partial particles is less than 4% for pore size and less than 6% for porosity. The study demonstrates the potential of polarization measurements and index systems applied in characterizing the micropore structure of suspended particles. Full article

(This article belongs to the Special Issue The 15th Anniversary of Materials—Recent Advances in Optical and Photonic Materials)

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13 pages, 6814 KiB

Open AccessArticle

Real-Time Nondestructive Viscosity Measurement of Soft Tissue Based on Viscoelastic Response Optical Coherence Elastography

by Zhixin Liu, Weidong Liu, Qi Chen, Yongzheng Hu, Yurun Li, Xiaoya Zheng, Dian Fang, Hai Liu and Cuiru Sun

Materials 2023, 16(17), 6019; https://doi.org/10.3390/ma16176019 - 01 Sep 2023

Viewed by 847

Abstract

Viscoelasticity of the soft tissue is an important mechanical factor for disease diagnosis, biomaterials testing and fabrication. Here, we present a real-time and high-resolution viscoelastic response-optical coherence elastography (VisR-OCE) method based on acoustic radiation force (ARF) excitation and optical coherence tomography (OCT) imaging. The relationship between displacements induced by two sequential ARF loading—unloading and the relaxation time constant of the soft tissue—is established for the Kelvin-Voigt material. Through numerical simulation, the optimal experimental parameters are determined, and the influences of material parameters are evaluated. Virtual experimental results show that there is less than 4% fluctuation in the relaxation time constant values obtained when various Young’s modulus and Poisson’s ratios were given for simulation. The accuracy of the VisR-OCE method was validated by comparing with the tensile test. The relaxation time constant of phantoms measured by VisR-OCE differs from the tensile test result by about 3%. The proposed VisR-OCE method may provide an effective tool for quick and nondestructive viscosity testing of biological tissues. Full article

(This article belongs to the Special Issue The 15th Anniversary of Materials—Recent Advances in Optical and Photonic Materials)

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12 pages, 3955 KiB

Open AccessArticle

Development of Wide-Angle Depolarizing Reflector at 1064 nm

by Han Zhu, Hongyan Jiang, Kai Guo, Yongchao Peng, Yawu Xin, Gong Zhang, Yixin Lin, Ning Yang, Huashu Wei, Zekai Huang, Shifu Xiong and Zhanggui Hu

Materials 2023, 16(12), 4258; https://doi.org/10.3390/ma16124258 - 08 Jun 2023

Viewed by 853

Abstract

Optical coherence tomography is a new promising chromatographic imaging technique with the advantages of noncontact and high resolution without damage, which is widely used in the field of biological tissue detection and imaging. As an important optical element in the system, the wide-angle depolarizing reflector plays a key role in the accurate acquisition of optical signals. Ta₂O₅ and SiO₂ are selected as the coating materials for the technical parameter requirements of the reflector in the system. Based on the basic theory of optical thin film and combined with MATLAB and OptiLayer software, the design of 0~60° incident 1064 ± 40 nm depolarizing reflective film is realized by establishing the evaluation function of the film system. To optimize the oxygen-charging distribution scheme during film deposition, the weak absorption properties of the film materials are characterized by optical thermal co-circuit interferometry. According to the sensitivity distribution of the film layer, the optical control monitoring scheme with a thickness error of less than 1% is designed rationally. “Crystal control + optical control” is used to precisely control the thickness of each film layer and complete the preparation of resonant cavity film. The measurement results show that the average reflectance is more than 99.5%, and the deviation of P-light and S-light is less than 1% in the 1064 ± 40 nm wavelength band range from 0° to 60°, which meets the requirements of optical coherence tomography system. Full article

(This article belongs to the Special Issue The 15th Anniversary of Materials—Recent Advances in Optical and Photonic Materials)

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16 pages, 22247 KiB

Open AccessEditor’s ChoiceArticle

Effect of Gd³⁺, La³⁺, Lu³⁺ Co-Doping on the Morphology and Luminescent Properties of NaYF₄:Sm³⁺ Phosphors

by Viktor G. Nosov, Anna A. Betina, Tatyana S. Bulatova, Polina B. Guseva, Ilya E. Kolesnikov, Sergey N. Orlov, Maxim S. Panov, Mikhail N. Ryazantsev, Nikita A. Bogachev, Mikhail Yu Skripkin and Andrey S. Mereshchenko

Materials 2023, 16(6), 2157; https://doi.org/10.3390/ma16062157 - 07 Mar 2023

Cited by 1 | Viewed by 1953

Abstract

The series of luminescent NaYF₄:Sm³⁺ nano- and microcrystalline materials co-doped by La³⁺, Gd³⁺, and Lu³⁺ ions were synthesized by hydrothermal method using rare earth chlorides as the precursors and citric acid as a stabilizing agent. The phase composition of synthesized compounds was studied by PXRD. All synthesized materials except ones with high La³⁺ content (where LaF₃ is formed) have a β-NaYF₄ crystalline phase. SEM images demonstrate that all particles have shape of hexagonal prisms. The type and content of doping REE significantly effect on the particle size. Upon 400 nm excitation, phosphors exhibit distinct emission peaks in visible part of the spectrum attributed to ⁴G_5/2→⁶H_J transitions (J = 5/2–11/2) of Sm³⁺ ion. Increasing the samarium (III) content results in concentration quenching by dipole–dipole interactions, the optimum Sm³⁺concentration is found to be of 2%. Co-doping by non-luminescent La³⁺, Gd³⁺ and Lu³⁺ ions leads to an increase in emission intensity. This effect was explained from the Sm³⁺ local symmetry point of view. Full article

(This article belongs to the Special Issue The 15th Anniversary of Materials—Recent Advances in Optical and Photonic Materials)

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