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Feature Paper in Optical and Photonic Materials

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

Deadline for manuscript submissions: closed (10 September 2023) | Viewed by 32508

Special Issue Editor


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Guest Editor
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
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

Optics and photonics are sciences and technologies based on the interaction of photons from X-ray to ultraviolet, visible and infrared, and further to terahertz range with various materials. Optics and photonics require modern materials to create new light sources, light delivery devices, mirrors, fiber optics, etc. At the same time, optics and photonics provide precision processing of all types of materials using well-known and widely used technologies such as photolithography, laser printing, and laser engraving.

Biomedical optics and biophotonics, as a rapidly developing interdisciplinary field of research and innovative technologies, also requires special new biocompatible materials for implants, tissue phantoms, labeling of pathological cells, printing cells and organs, delivering light to internal organs, etc.

This Special Issue highlights and discusses current trends in optics and photonics, and interaction of optical radiation with various materials, including nanomaterials and biological materials, with the aim of obtaining novel smart materials and medical technologies.

It is my pleasure to invite you to submit your manuscript for this Special Issue. Full articles, letters, tutorials, and reviews are greatly appreciated.

Corresponding member of the RAS, Prof. Dr. Valery V. Tuchin
Guest Editor

Manuscript Submission Information

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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

  • Lasers
  • LEDs
  • Fibers
  • UV
  • Terahertz
  • Nanostructured materials
  • Plasmonic nanoparticles
  • Tissues
  • Tissue phantoms
  • Optical Imaging
  • Contrast agents
  • Optical clearing
  • Drug delivery
  • Biomolecule self-assembly
  • Exosomes
  • Photoacoustics
  • Optogenetics
  • Implants
  • Regenerative materials
  • Molecule diffusion
  • Tissue regeneration

Published Papers (12 papers)

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Research

Jump to: Review

11 pages, 5175 KiB  
Article
Selective Laser Spectroscopy of the Bixbyite-Type Yttrium Scandate Doped by Rare-Earth Ions
by Elena Dobretsova, Olimkhon Alimov, Sergey Rusanov, Vitaly Kashin and Vladimir Tsvetkov
Materials 2023, 16(21), 6829; https://doi.org/10.3390/ma16216829 - 24 Oct 2023
Viewed by 878
Abstract
Yttrium scandate crystals doped by Nd3+ and Tm3+ ions have been successfully grown in the form of fibers using the laser-heated pedestal growth (LHPG) technique. The selective laser spectroscopy methods have identified and distinguished three distinct types of optically active centers [...] Read more.
Yttrium scandate crystals doped by Nd3+ and Tm3+ ions have been successfully grown in the form of fibers using the laser-heated pedestal growth (LHPG) technique. The selective laser spectroscopy methods have identified and distinguished three distinct types of optically active centers associated with Nd3+ and Tm3+ ions. The substitution of Y3+ and Sc3+ for rare-earth ions in the C2 structural site leads to the formation of two distinct basic long-time centers. In Nd3+:YScO3, another type of center (a short-lifetime one) is formed known as the Nd3+–Nd3+ aggregate pair. This center arises from the substitution of Y3+ or Sc3+ for Nd3+ cation in the adjacent MO6 polyhedra that share an edge. In Tm3+:YScO3, the third optical center is formed as a result of the substitution of Y3+ or Sc3+ for Tm3+ in the MO6 octahedra with the C3i site symmetry. The fluorescence decay lifetimes of Nd3+ and Tm3+ ions in the YScO3 crystal structure have been accurately measured and estimated. A Stark level diagram illustrating the splitting of 4F3/2, 4I11/2, and 4I9/2 multiplets of Nd3+ ions has been constructed to show features of the active optical centers with the C2 site symmetry. Full article
(This article belongs to the Special Issue Feature Paper in Optical and Photonic Materials)
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13 pages, 4429 KiB  
Article
Nonlinear Optical Properties of Zn(II) Porphyrin, Graphene Nanoplates, and Ferrocene Hybrid Materials
by Francesca Limosani, Francesca Tessore, Alessandra Forni, Angelo Lembo, Gabriele Di Carlo, Cecilia Albanese, Stefano Bellucci and Pietro Tagliatesta
Materials 2023, 16(15), 5427; https://doi.org/10.3390/ma16155427 - 02 Aug 2023
Viewed by 844
Abstract
Following some previous work by some of us on the second order nonlinear optical (NLO) properties of Zn(II) meso-tetraphenylporphyrin (ZnP), fullerene, and ferrocene (Fc) diads and triads, in the present research, we explore the NLO response of some new hybrids with two-dimensional [...] Read more.
Following some previous work by some of us on the second order nonlinear optical (NLO) properties of Zn(II) meso-tetraphenylporphyrin (ZnP), fullerene, and ferrocene (Fc) diads and triads, in the present research, we explore the NLO response of some new hybrids with two-dimensional graphene nanoplates (GNP) instead of a zero-dimensional fullerene moiety as the acceptor unit. The experimental data, collected by Electric Field Induced Second Harmonic generation (EFISH) technique in CH2Cl2 solution with a 1907 nm incident wavelength, combined with Coupled-Perturbed (CP) and Finite Field (FF) Density Functional Theory (DFT) calculations, show a strongly enhanced contribution of the cubic electronic term γ(−2ω; ω, ω, 0), due to the extended π-conjugation of the carbonaceous acceptor moiety. Full article
(This article belongs to the Special Issue Feature Paper in Optical and Photonic Materials)
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15 pages, 4307 KiB  
Article
Flexible Substrate of Cellulose Fiber/Structured Plasmonic Silver Nanoparticles Applied for Label-Free SERS Detection of Malathion
by Kseniya V. Serebrennikova, Nadezhda S. Komova, Arseniy V. Aybush, Anatoly V. Zherdev and Boris B. Dzantiev
Materials 2023, 16(4), 1475; https://doi.org/10.3390/ma16041475 - 09 Feb 2023
Cited by 3 | Viewed by 1553
Abstract
Surface-enhanced Raman scattering (SERS) is considered an efficient technique providing high sensitivity and fingerprint specificity for the detection of pesticide residues. Recent developments in SERS-based detection aim to create flexible plasmonic substrates that meet the requirements for non-destructive analysis of contaminants on curved [...] Read more.
Surface-enhanced Raman scattering (SERS) is considered an efficient technique providing high sensitivity and fingerprint specificity for the detection of pesticide residues. Recent developments in SERS-based detection aim to create flexible plasmonic substrates that meet the requirements for non-destructive analysis of contaminants on curved surfaces by simply wrapping or wiping. Herein, we reported a flexible SERS substrate based on cellulose fiber (CF) modified with silver nanostructures (AgNS). A silver film was fabricated on the membrane surface with an in situ silver mirror reaction leading to the formation of a AgNS–CF substrate. Then, the substrate was decorated through in situ synthesis of raspberry-like silver nanostructures (rAgNS). The SERS performance of the prepared substrate was tested using 4-mercaptobenzoic acid (4-MBA) as a Raman probe and compared with that of the CF-based plasmonic substrates. The sensitivity of the rAgNS/AgNS–CF substrate was evaluated by determining the detection limit of 4-MBA and an analytical enhancement factor, which were 10 nM and ~107, respectively. Further, the proposed flexible rAgNS/AgNS–CF substrate was applied for SERS detection of malathion. The detection limit for malathion reached 0.15 mg/L, which meets the requirements about its maximum residue level in food. Thus, the characteristics of the rAgNS/AgNS–CF substrate demonstrate the potential of its application as a label-free and ready-to-use sensing platform for the SERS detection of trace hazardous substances. Full article
(This article belongs to the Special Issue Feature Paper in Optical and Photonic Materials)
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12 pages, 4188 KiB  
Article
Pressure Evolution of Ultrafast Photocarrier Dynamics and Electron–Phonon Coupling in FeTe0.5Se0.5
by Muyun Li, Yan Zhou, Kai Zhang, Guangyong Xu, Genda Gu, Fuhai Su and Xiaojia Chen
Materials 2022, 15(23), 8467; https://doi.org/10.3390/ma15238467 - 28 Nov 2022
Viewed by 1337
Abstract
Understanding the coupling between electrons and phonons in iron chalcogenides FeTexSe1x has remained a critical but arduous project in recent decades. The direct observation of the electron–phonon coupling effect through electron dynamics and vibrational properties has been lacking. [...] Read more.
Understanding the coupling between electrons and phonons in iron chalcogenides FeTexSe1x has remained a critical but arduous project in recent decades. The direct observation of the electron–phonon coupling effect through electron dynamics and vibrational properties has been lacking. Here, we report the first pressure-dependent ultrafast photocarrier dynamics and Raman scattering studies on an iron chalcogenide FeTe0.5Se0.5 to explore the interaction between electrons and phonons in this unconventional superconductor. The lifetime of the excited electrons evidently decreases as the pressure increases from 0 to 2.2 GPa, and then increases with further compression. The vibrational properties of the A1g phonon mode exhibit similar behavior, with a pronounced frequency reduction appearing at approximately 2.3 GPa. The dual evidence reveals the enhanced electron–phonon coupling strength with pressure in FeTe0.5Se0.5. Our results give an insight into the role of the electron–phonon coupling effect in iron-based superconductors. Full article
(This article belongs to the Special Issue Feature Paper in Optical and Photonic Materials)
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10 pages, 1784 KiB  
Article
Application of Genetically Encoded Photoconvertible Protein SAASoti for the Study of Enzyme Activity in a Single Live Cell by Fluorescence Correlation Microscopy
by Ilya D. Solovyev, Liliya G. Maloshenok and Alexander P. Savitsky
Materials 2022, 15(14), 4962; https://doi.org/10.3390/ma15144962 - 16 Jul 2022
Cited by 2 | Viewed by 1375
Abstract
Fluorescent Correlation Spectroscopy (FCS) allows us to determine interactions of labeled proteins or changes in the oligomeric state. The FCS method needs a low amount of fluorescent dye, near nanomolar concentrations. To control the amount of fluorescent dye, we used new photoconvertible FP [...] Read more.
Fluorescent Correlation Spectroscopy (FCS) allows us to determine interactions of labeled proteins or changes in the oligomeric state. The FCS method needs a low amount of fluorescent dye, near nanomolar concentrations. To control the amount of fluorescent dye, we used new photoconvertible FP SAASoti. This work is devoted to the proof of principle of using photoconvertible proteins to measure caspase enzymatic activity in a single live cell. The advantage of this approach is that partial photoconversion of the FP makes FCS measurements possible when studying enzymatic reactions. To investigate the process, in vivo we used HeLa cell line expressing the engineered FRET sensor, SAASoti-23-KFP. This FRET sensor has a cleavable (DEVD) sequence in the linker between two FPs for the detection of one of the key enzymes of apoptosis, caspase-3. Caspase-3 activity was detected by registering the increase in the fluorescent lifetimes of the sensor, whereas the diffusion coefficient of SAASoti decreased. This can be explained by an increase in the total cell viscosity during apoptosis. We can suppose that in the moment of detectible caspase-3 activity, cell structure already has crucial changes in viscosity. Full article
(This article belongs to the Special Issue Feature Paper in Optical and Photonic Materials)
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15 pages, 976 KiB  
Article
Deep Learning for Type 1 Diabetes Mellitus Diagnosis Using Infrared Quantum Cascade Laser Spectroscopy
by Igor Fufurin, Pavel Berezhanskiy, Igor Golyak, Dmitriy Anfimov, Elizaveta Kareva, Anastasiya Scherbakova, Pavel Demkin, Olga Nebritova and Andrey Morozov
Materials 2022, 15(9), 2984; https://doi.org/10.3390/ma15092984 - 20 Apr 2022
Cited by 10 | Viewed by 2362
Abstract
An estimated 10.5% of the world’s population aged 20–79 years are currently living with diabetes in 2021. An urgent task is to develop a non-invasive express-diagnostics of diabetes with high accuracy. Type 1 diabetes mellitus (T1DM) diagnostic method based on infrared laser spectroscopy [...] Read more.
An estimated 10.5% of the world’s population aged 20–79 years are currently living with diabetes in 2021. An urgent task is to develop a non-invasive express-diagnostics of diabetes with high accuracy. Type 1 diabetes mellitus (T1DM) diagnostic method based on infrared laser spectroscopy of human exhaled breath is described. A quantum cascade laser emitting in a pulsed mode with a peak power of up to 150 mW in the spectral range of 5.3–12.8 μm and Herriot multipass gas cell with an optical path length of 76 m were used. We propose a method for collecting and drying an exhaled human air sample and have measured 1200 infrared exhaled breath spectra from 60 healthy volunteers (the control group) and 60 volunteers with confirmed T1DM (the target group). A 1-D convolutional neural network for the classification of healthy and T1DM volunteers with an accuracy of 99.7%, recall 99.6% and AUC score 99.9% was used. The demonstrated results require clarification on a larger dataset and series of clinical studies and, further, the method can be implemented in routine medical practice. Full article
(This article belongs to the Special Issue Feature Paper in Optical and Photonic Materials)
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17 pages, 12742 KiB  
Article
Optical Coherence Elastography as a Tool for Studying Deformations in Biomaterials: Spatially-Resolved Osmotic Strain Dynamics in Cartilaginous Samples
by Yulia Alexandrovskaya, Olga Baum, Alexander Sovetsky, Alexander Matveyev, Lev Matveev, Emil Sobol and Vladimir Zaitsev
Materials 2022, 15(3), 904; https://doi.org/10.3390/ma15030904 - 25 Jan 2022
Cited by 9 | Viewed by 2252
Abstract
This paper presents a recently developed variant of phase-resolved Optical Coherence Elastography (OCE) enabling non-contact visualization of transient local strains of various origins in biological tissues and other materials. In this work, we demonstrate the possibilities of this new technique for studying dynamics [...] Read more.
This paper presents a recently developed variant of phase-resolved Optical Coherence Elastography (OCE) enabling non-contact visualization of transient local strains of various origins in biological tissues and other materials. In this work, we demonstrate the possibilities of this new technique for studying dynamics of osmotically-induced strains in cartilaginous tissue impregnated with optical clearing agents (OCA). For poroelastic water-containing biological tissues, application of non-isotonic OCAs, various contrast additives, as well as drug solutions administration, may excite transient spatially-inhomogeneous strain fields of high magnitude in the tissue bulk, initiating mechanical and structural alterations. The range of the strain reliably observed by OCE varied from ±10−3 to ±0.4 for diluted and pure glycerol, correspondingly. The OCE-technique used made it possible to reveal previously inaccessible details of the complex spatio-temporal evolution of alternating-sign osmotic strains at the initial stages of agent diffusion. Qualitatively different effects produced by particular hydrophilic OCAs, such as glycerol and iohexol, are discussed, as well as concentration-dependent differences. Overall, the work demonstrates the unique abilities of the new OCE-modality in providing a deeper insight in real-time kinetics of osmotically-induced strains relevant to a broad range of biomedical applications. Full article
(This article belongs to the Special Issue Feature Paper in Optical and Photonic Materials)
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13 pages, 2156 KiB  
Article
Single-Fiber Diffuse Reflectance Spectroscopy and Spatial Frequency Domain Imaging in Surgery Guidance: A Study on Optical Phantoms
by Polina S. Tseregorodtseva, Kirill E. Buiankin, Boris P. Yakimov, Armais A. Kamalov, Gleb S. Budylin and Evgeny A. Shirshin
Materials 2021, 14(24), 7502; https://doi.org/10.3390/ma14247502 - 07 Dec 2021
Cited by 4 | Viewed by 2516
Abstract
Diffuse reflectance spectroscopy (DRS) and imaging are increasingly being used in surgical guidance for tumor margin detection during endoscopic operations. However, the accuracy of the boundary detection with optical techniques may depend on the acquisition parameters, and its evaluation is in high demand. [...] Read more.
Diffuse reflectance spectroscopy (DRS) and imaging are increasingly being used in surgical guidance for tumor margin detection during endoscopic operations. However, the accuracy of the boundary detection with optical techniques may depend on the acquisition parameters, and its evaluation is in high demand. In this work, using optical phantoms with homogeneous and heterogeneous distribution of chromophores mimicking normal and pathological bladder tissues, the accuracy of tumor margin detection using single-fiber diffuse reflectance spectroscopy and spatial frequency domain imaging was evaluated. We also showed how the diffuse reflectance response obtained at different spatial frequencies with the spatial frequency domain imaging technique could be used not only to quantitatively map absorption and scattering coefficients of normal tissues and tumor-like heterogeneities but also to estimate the tumor depth localization. The demonstrated results could be helpful for proper analysis of the DRS data measured in vivo and for translation of optical techniques for tumor margin detection to clinics. Full article
(This article belongs to the Special Issue Feature Paper in Optical and Photonic Materials)
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11 pages, 16855 KiB  
Article
Ultrafast Third-Order Nonlinear Optical Response Excited by fs Laser Pulses at 1550 nm in GaN Crystals
by Adrian Petris, Petronela Gheorghe, Tudor Braniste and Ion Tiginyanu
Materials 2021, 14(12), 3194; https://doi.org/10.3390/ma14123194 - 10 Jun 2021
Cited by 5 | Viewed by 2360
Abstract
The ultrafast third-order optical nonlinearity of c-plane GaN crystal, excited by ultrashort (fs) high-repetition-rate laser pulses at 1550 nm, wavelength important for optical communications, is investigated for the first time by optical third-harmonic generation in non-phase-matching conditions. As the thermo-optic effect that can [...] Read more.
The ultrafast third-order optical nonlinearity of c-plane GaN crystal, excited by ultrashort (fs) high-repetition-rate laser pulses at 1550 nm, wavelength important for optical communications, is investigated for the first time by optical third-harmonic generation in non-phase-matching conditions. As the thermo-optic effect that can arise in the sample by cumulative thermal effects induced by high-repetition-rate laser pulses cannot be responsible for the third-harmonic generation, the ultrafast nonlinear optical effect of solely electronic origin is the only one involved in this process. The third-order nonlinear optical susceptibility of GaN crystal responsible for the third-harmonic generation process, an important indicative parameter for the potential use of this material in ultrafast photonic functionalities, is determined. Full article
(This article belongs to the Special Issue Feature Paper in Optical and Photonic Materials)
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Review

Jump to: Research

17 pages, 2072 KiB  
Review
Daylight Photoactive TiO2 Sol-Gel Nanoparticles: Sustainable Environmental Contribution
by Daniel Alves Barcelos and Maria Clara Gonçalves
Materials 2023, 16(7), 2731; https://doi.org/10.3390/ma16072731 - 29 Mar 2023
Cited by 3 | Viewed by 1611
Abstract
Visible-light-photoactive titania micro- or nanoparticles excel in a wide range of industrial areas, particularly in environmental remediation. The sol–gel methodology is one pivotal technique which has been successfully used to synthesize either crystalline and amorphous TiO2 micro- and nanoparticles due to its [...] Read more.
Visible-light-photoactive titania micro- or nanoparticles excel in a wide range of industrial areas, particularly in environmental remediation. The sol–gel methodology is one pivotal technique which has been successfully used to synthesize either crystalline and amorphous TiO2 micro- and nanoparticles due to its outstanding chemical simplicity and versatility, along with the green chemistry approach. This short review aims to collect and discuss the most recent developments in visible-light-photoactive titania-based nanoparticles in the environmental remediation area. Titania co-doping, titania composite design, and, recently, amorphous networks have been the most used strategies to address this goal. Finally, a prediction regarding the future of these fields is given. Full article
(This article belongs to the Special Issue Feature Paper in Optical and Photonic Materials)
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34 pages, 6077 KiB  
Review
Magnetite Nanoparticles: Synthesis and Applications in Optics and Nanophotonics
by Nataliia Dudchenko, Shweta Pawar, Ilana Perelshtein and Dror Fixler
Materials 2022, 15(7), 2601; https://doi.org/10.3390/ma15072601 - 01 Apr 2022
Cited by 27 | Viewed by 8534
Abstract
Magnetite nanoparticles with different surface coverages are of great interest for many applications due to their intrinsic magnetic properties, nanometer size, and definite surface morphology. Magnetite nanoparticles are widely used for different medical-biological applications while their usage in optics is not as widespread. [...] Read more.
Magnetite nanoparticles with different surface coverages are of great interest for many applications due to their intrinsic magnetic properties, nanometer size, and definite surface morphology. Magnetite nanoparticles are widely used for different medical-biological applications while their usage in optics is not as widespread. In recent years, nanomagnetite suspensions, so-called magnetic ferrofluids, are applied in optics due to their magneto-optical properties. This review gives an overview of nanomagnetite synthesis and its properties. In addition, the preparation and application of magnetic nanofluids in optics, nanophotonics, and magnetic imaging are described. Full article
(This article belongs to the Special Issue Feature Paper in Optical and Photonic Materials)
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39 pages, 72409 KiB  
Review
Photothermal and Photodynamic Therapy of Tumors with Plasmonic Nanoparticles: Challenges and Prospects
by Alla B. Bucharskaya, Nikolai G. Khlebtsov, Boris N. Khlebtsov, Galina N. Maslyakova, Nikita A. Navolokin, Vadim D. Genin, Elina A. Genina and Valery V. Tuchin
Materials 2022, 15(4), 1606; https://doi.org/10.3390/ma15041606 - 21 Feb 2022
Cited by 30 | Viewed by 4930
Abstract
Cancer remains one of the leading causes of death in the world. For a number of neoplasms, the efficiency of conventional chemo- and radiation therapies is insufficient because of drug resistance and marked toxicity. Plasmonic photothermal therapy (PPT) using local hyperthermia induced by [...] Read more.
Cancer remains one of the leading causes of death in the world. For a number of neoplasms, the efficiency of conventional chemo- and radiation therapies is insufficient because of drug resistance and marked toxicity. Plasmonic photothermal therapy (PPT) using local hyperthermia induced by gold nanoparticles (AuNPs) has recently been extensively explored in tumor treatment. However, despite attractive promises, the current PPT status is limited by laboratory experiments, academic papers, and only a few preclinical studies. Unfortunately, most nanoformulations still share a similar fate: great laboratory promises and fair preclinical trials. This review discusses the current challenges and prospects of plasmonic nanomedicine based on PPT and photodynamic therapy (PDT). We start with consideration of the fundamental principles underlying plasmonic properties of AuNPs to tune their plasmon resonance for the desired NIR-I, NIR-2, and SWIR optical windows. The basic principles for simulation of optical cross-sections and plasmonic heating under CW and pulsed irradiation are discussed. Then, we consider the state-of-the-art methods for wet chemical synthesis of the most popular PPPT AuNPs such as silica/gold nanoshells, Au nanostars, nanorods, and nanocages. The photothermal efficiencies of these nanoparticles are compared, and their applications to current nanomedicine are shortly discussed. In a separate section, we discuss the fabrication of gold and other nanoparticles by the pulsed laser ablation in liquid method. The second part of the review is devoted to our recent experimental results on laser-activated interaction of AuNPs with tumor and healthy tissues and current achievements of other research groups in this application area. The unresolved issues of PPT are the significant accumulation of AuNPs in the organs of the mononuclear phagocyte system, causing potential toxic effects of nanoparticles, and the possibility of tumor recurrence due to the presence of survived tumor cells. The prospective ways of solving these problems are discussed, including developing combined antitumor therapy based on combined PPT and PDT. In the conclusion section, we summarize the most urgent needs of current PPT-based nanomedicine. Full article
(This article belongs to the Special Issue Feature Paper in Optical and Photonic Materials)
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