Search Results - "Umanskaya, S. F."
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Transformation of Nano-Size Titanium Dioxide Particles in the Gastrointestinal Tract and Its Role in the Transfer of Nanoparticles through the Intestinal Barrier
Published in International journal of molecular sciences (01-10-2023)“…In this work, the size transformation of the TiO2 nanofraction from pharmaceutical grade E171 powder was studied during its transit through the…”
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2
Electromagnetic microwave generation by acoustic vibrations gives rise to nanoradiophotonics
Published in Scientific reports (08-04-2021)“…The development of new methods for generating pulsed electromagnetic microwave radiation is currently an actively developing area of research. Schemes for…”
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3
Tuning the efficiency of Random Laser Generation in a Suspension of ZnO Nanoparticles by Means of its Directional Freezing
Published in Journal of Russian laser research (01-11-2023)“…In this paper, we introduce a novel approach to control the random lasing based on multiphoton luminiscence in Zinc oxide (ZnO) nanoparticle water suspension…”
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4
Synthetic Opals in Laser-Induced Breakdown Spectroscopy Problems
Published in Physics of wave phenomena (01-02-2023)“…Laser-induced breakdown spectroscopy (LIBS) is first used to identify small impurity amounts in a three-dimensional ordered submicron dielectric structure…”
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5
Application of Photonic Crystals for the Generation of Broadband Radiation at the LINAC-200 Linear Accelerator
Published in Physics of atomic nuclei (01-12-2023)“…Options for using ordered 3D arrays of photonic crystals for the generation of gigahertz, optical, and neutron radiation upon interaction with a beam of…”
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6
LIBS Efficiency Increase via Plasmonic Nanoparticles in the Study of Synthetic Opal Matrices
Published in Physics of wave phenomena (01-04-2024)“…In this article, a method of depositing plasmonic particles on synthetic opal matrices was used for increasing the efficiency of laser-induced breakdown…”
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7
Two-Photon Excited Luminescence of NV-Centers and Stimulated Raman Scattering in Nanodiamonds
Published in Journal of Russian laser research (01-11-2021)“…In this study, zero-phonon line (ZPL) at 638 nm associated with multiphoton excited negatively-charged single nitrogen-vacancy (NV)-center luminescence is…”
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8
Plasmon-Enhanced Two-Photon Absorption of Infrared Femtosecond Laser Pulses in Thin Gold Films
Published in JETP letters (01-03-2019)“…The transmission of femtosecond laser pulses of the near-infrared range (wavelength of 1030 nm) through nanocrystalline gold films with a variable thickness…”
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9
Polarization-selective Excitation of Dye Luminescence on a Gold Film by Structured Ultrashort Laser Pulses
Published in JETP letters (2018)“…Donut-shaped visible (515 nm) femtosecond laser pulses with linear, radial and azimuthal polarizations after tight focusing (numerical aperture NA = 0.65) have…”
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10
Anti-Stokes luminescence of ZnO powder under picosecond excitation
Published in Bulletin of the Lebedev Physics Institute (01-02-2022)“…The results of experimental studies of luminescence in ZnO powder under picosecond excitation are presented. It is shown that the luminescence spectrum excited…”
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Stimulated Raman Scattering of Light in Liquids in the Ultrasonic Wave Field
Published in Bulletin of the Lebedev Physics Institute (01-06-2023)“…An anomalous (more than ten times) increase in the SRS intensity in liquids under picosecond excitation is detected as ultrasonic exposure on a medium is…”
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12
Effect of Active Acidity of a Colloidal Solution of Titanium Dioxide in the Form of Anatase on the Aggregate Stability of Nanofraction
Published in Bulletin of the Lebedev Physics Institute (01-08-2021)“…Depending on the active acidity of an aqueous solution, the colloidal stability of a titanium dioxide suspension in the form of anatase (food additive E171),…”
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13
Raman Markers of Toxic Nanofraction in Anatase TiO2 Micropowder Used as E171 Food Additive
Published in Journal of Russian laser research (01-07-2021)“…Titanium dioxide (TiO 2 ) micropowders widely used in modern food industry may contain particles in highly-toxic nanoform. Unlike micrometer-sized crystals,…”
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14
Stimulated Low-Frequency Raman Scattering in Brome Mosaic Virus
Published in Journal of Russian laser research (2021)“…We experimentally register stimulated low-frequency Raman scattering (SLFRS) in the suspension of brome mosaic virus (BMV) in phosphate buffer with very high…”
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15
Laser Structuring of the Surface for Controlling the Wetting Angle
Published in Bulletin of the Lebedev Physics Institute (2019)“…The possibility of controlling wetting of the surface of a thin layered film consisting of silver and polymer layers at producing a periodic structure using a…”
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16
Fabrication of nano- and microstructures inside thin translucent cuprous oxide film upon femtosecond laser exposure
Published in JETP letters (01-06-2017)“…Subablative exposure of tightly focused visible-range femtosecond laser pulses on a thin translucent nanocrystalline copper(I) oxide on a silica glass…”
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17
Laser Nanostructuring and Three-Dimensional Ink-Jet Printing of Nanocoatings
Published in Bulletin of the Russian Academy of Sciences. Physics (01-04-2018)“…High-production laser ablation is used to prepare nano-ink that is colored colloidal solutions of nanoparticles in water, characterized by a variety of…”
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18
Effective Coherent Anti-Stokes Components Generation Using Biharmonic Pumping in the Gigahertz Range
Published in 2020 International Conference Laser Optics (ICLO) (02-11-2020)“…The scheme for the efficient generation of anti-Stokes components of stimulated low-frequency Raman scattering using biharmonic pumping is proposed and…”
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Conference Proceeding -
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Raman random lasing — Extremely high conversion efficiency and temperature dependence
Published in Optics communications (01-04-2022)“…Stimulated Raman scattering (SRS) in barium nitrate powder was studied in two temporal modes: excitation by laser pulses of 11 ns and 30 ps from the room…”
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Spectral and temporal properties of 5-phenyl-2-[4-(5-phenyl-1,3-oxazol-2-yl)phenyl]-1,3-oxazole (POPOP) multiphoton-excited luminescence
Published in Journal of luminescence (01-11-2023)“…The results of a study of multiphoton-excited luminescence and Stimulated Raman scattering (SRS) of POPOP in a form of crystalline powder and toluene solution…”
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