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Усиление комбинационного рассеяния света в субволновых плазмонных наноструктурах, полученных методом ионно-лучевой литографии
Кристаллография. 2014. Т. 59. № 1. С. 137-144.
Smirnov I. S., Мамичев Д. А., Андреев А. В., Коновко А. А., Дрынкин В. А., Кузнецов И. А.
By using ion-beam lithography we have obtained subwavelength grating with optimized architecture corresponding to the spectral position of the resonances at desired wavelengths. Structural and optical properties of the obtained nanostructures were investigated. Signal intensity of Raman scattering from molecules of substances adsorbed on the surface gratings with optimized architecture increased to 10 000 times. These nanostructures can be used as a basis for the creation of highly sensitive sensors and a variety of optoelectronic components
Vladimirova Yu.V., Chubchev E. D., Zadkov V.N., Laser Physics 2017 Vol. 27 No. 2 P. 1-10
It is demonstrated that the interaction of a two-level quantum emitter (atom, molecule, etc)
with a plasmonic nanoparticle (prolate nanospheroid) in an external laser field features either
an essential increase (up to a few orders of magnitude) or reduction (up to a few times) of the
total decay rate of the emitter in specific areas around the nanoparticle ...
Added: February 1, 2019
Chervinskii S., Koskinen K., Scherbak S. et al., Physical Review Letters 2018 Vol. 120 No. 11 P. 113902
We study second-harmonic generation from gold nanoislands covered with amorphous titanium oxide
(TiO2) films. As the TiO2 thickness increases, the plasmon resonance of the nanoislands shifts away from the second-harmonic wavelength of 532 nm, diminishing the resonant enhancement of the process at this wavelength. Nevertheless, the second-harmonic signal is enhanced by up to a factor of ...
Added: December 9, 2020
Melentiev P. N., Balykin V. I., Успехи физических наук 2019 Т. 189 № 3 С. 282-291
The main results obtained recently at the Laboratory of Laser Spectroscopy, Institute of Spectroscopy of the Russian Academy of Sciences in researching and developing various 2D optical elements for surface plasmon waves and their characterization using near-and far-field methods are presented. They include an optical medium for plasmon waves, a plasmon interferometer, a parabolic mirror ...
Added: December 20, 2019
Щербак С. А., Lipovskii A., Babich E. S., Journal of Physics: Conference Series 2018 Vol. 1124 No. 5 P. 051028
An analytical study of the second harmonic generation by metal core - dielectric shell spherical nanoparticles was performed. Dependences of the second harmonic intensity on the dielectric shell thickness were calculated. We demonstrated that the thin coating allows tuning surface plasmon resonance wavelength, whereas in presence of the thick shell spatial Mie resonances occur. Estimated ...
Added: December 9, 2020
Vladimirova Yu.V., Zadkov V.N., Pavlov A. A., Moscow University Physics Bulletin 2017 Vol. 72 No. 6 P. 544-549
We studied the radiation-directivity pattern and the near-field polarization of a spheroidal metallic nanoparticle located over a silicon substrate by interaction with a linearly and circularly polarized field. It is shown that the directivity pattern of the spheroidal particle near the silicon substrate becomes strongly asym- metric and forward scattering is predominant compared with the ...
Added: February 1, 2019
Melentiev P. N., Gritchenko A. S., Balykin V. I., Optical Materials Express 2019 Vol. 9 No. 3 P. 1173-1179
We propose a method of measuring low concentrations of fluorescent molecules located in a small volume of a liquid solvent (about 5 μl) based on the Ebbesen effect of the extraordinary transmission (EOT) of light through a state-of-the-art plasmonic crystal formed by a nanohole array perforated in the ultra-high-quality Ag film. In the method, the EOT ...
Added: December 20, 2019
Chernykh I., Mamichev D., Grishchenko Y. V. et al., Journal of Surface Investigation: X-Ray, Synchrotron and Neutron Techniques 2011 Vol. 5 No. 5 P. 941-944
Nanostructures consisting of metal nanogratings made of Au on quartz substrates are produced.
The structural characteristics of samples are studied using atomic force and scanning electron microscopies (AFM and SEM). The optical properties of samples in the visible spectral region are also studied. The studies show that these nanostructures are characterized by a high degree of ...
Added: April 12, 2012
Makarov V. A., Grigoriev K. S., Vladimirova Yu.V. et al., Physical Review A: Atomic, Molecular, and Optical physics 2018 Vol. 98 No. 6 P. 063805-1-063805-8
Isotropy parameters of truly linear (LT ) and truly circular (CT ) polarization singularities in a threedimensional monochromatic electromagnetic field are defined. It is demonstrated that these parameters characterize the distribution of polarization ellipses near the singular points in a more detailed way than a topological index. A numerical algorithm which tracks CT and LT ...
Added: February 1, 2019
Щербак С. А., Липовский А. А., Journal of Physical Chemistry C 2018 Vol. 122 No. 27 P. 15635-15645
To explain recently observed up to 50-fold enhancement of the second harmonic (SH) signal from gold nanoparticles after depositing of a thin dielectric layer, we perform an analytical study of the SH generation by metal core-dielectric shell spherical nanoparticles (NPs). We derive analytical expressions for the SH intensity accounting for electric dipole and quadrupole impacts. ...
Added: December 9, 2020
Kuznetsov N. Y., Grigoriev K. S., Vladimirova Yu V. et al., Optics Express 2020 Vol. 28 No. 19 P. 27293-27299
We numerically study the structure of polarization singularity lines in a near-field
of the sub-wavelength dielectric particle when it is irradiated by a monochromatic elliptically
polarized plane wave. For the various values of the ellipticity degree of the incident radiation, we
trace the CT and LT-lines on which the polarization ellipse turns into a circle or a line, ...
Added: January 15, 2021
Melentiev P., Kalmykov A., Balykin V., ACS Photonics 2019 Vol. 6 P. 1425-1433
Due to losses in metals, the propagation length of the surface plasmon-polariton (SPP) waves on metal surfaces is
small. This severely limits development of numerous applications of the SPP optics: in the near-infrared spectral region propagation length of SPP waves is no longer than 200 μm as for plane SPP waves and for all types of ...
Added: December 20, 2019
Ikhsanov R., Protsenko I. E., Smetanin I. V. et al., Optics Express 2020 Vol. 45 No. 9 P. 2644-2647
Landau damping in the metal nanosphere is considered beyond the quasi-static approximation with the use of exact Mie theory when an incident plane wave can excite not only the dipole mode but also higher order modes. In resonance approximation, when one considers excitation of a single-mode, the analytical formula for the Landau damping coefficient for ...
Added: January 9, 2020
Владимирова Ю. В., Mannanov A. L., Luponosov Y. N. et al., Optical Materials Express 2021 Vol. 11 No. 5 P. 1537-1545
The effect of spherical SiO2 nanoparticles (NPs) embedded in the electrode layer of PEDOT:PSS on the efficiency of organic solar cells (OSC) based on small molecules was studied in detail. We show that embedding SiO2 NPs of 50 nm in diameter increases the power conversion efficiency (PCE) by 15%, and this increase weakly depends on ...
Added: July 1, 2021
Smirnov I. S., Novoselova E., Feigin L. A. et al., Materials Science and Engineering C 2002 Vol. 22 P. 129-133
Added: March 19, 2013
Melentiev P. N., Kuzin A., Negrov D. et al., Optics Letters 2021 Vol. 46 No. 16 P. 4029-4032
We propose and realize a single-mode surface plasmon polariton (SPP) waveguide formed by two parallel grooves on the surface of a high-quality silver film. In the waveguide the SPP wave undergoes Goos–Hänchen shift of up to 0.77 of the SPP wavelength at each successive reflection, with the electric field of the SPP wave outside the ...
Added: October 16, 2021
Ikhsanov R., Physica Status Solidi RRL 2015 Vol. 9 No. 10 P. 570-574
Transition absorption of a photon by an electron passing
through a boundary between two media with different permittivities
is described both classically and quantum mechanically.
Transition absorption is shown to make a substantial
contribution to photoelectron emission at a metal/semiconductor
interface in nanoplasmonic systems, and is put forth as
a possible microscopic mechanism of the surface photoelectric
effect in photodetectors and solar ...
Added: September 27, 2015
Antipov A., Seleznev V., Vakhtomin Y. et al., IOP Conference Series: Materials Science and Engineering (MSE) 2020 Vol. 781 No. 1 P. 012011-1-012011-5
Spectral characteristics of WSi and NbN superconducting single-photon detectors with different surface resistance and width of nanowire strips have been investigated in the wavelength range of 1.3-2.5 µm. WSi structures with narrower strips demonstrated better performance for detection of single photons in longer wavelength range. The difference in normalized photon count rate for such structures ...
Added: December 10, 2020
Budkov Y., Kolesnikov A. L., Polymer Science - Series C 2018 Vol. 60 No. Supplement 1 P. 148-159
Theoretical models of the conformational behavior of flexible polymer chains in mixed solvents enunciated in the world literature during the last decade are critically reviewed. Models describing different mechanisms of coil-to-globule transitions in a good solvent induced by cosolvent addition are highlighted. Special attention is given to the analysis of theoretical approaches to describing the ...
Added: November 30, 2018
Kalmykov A., Melentiev P., Balykin V., Laser Physics Letters 2020 Vol. 17 No. 4 P. 045901
In this paper we present measurements and comparison of SPP propagation length at the practically important telecom wavelength (1560 nm) as well as in the near-infrared and visible spectral ranges. The measurements were carried out for plane SPP waves excited on Ag film surface using optical microscopy of SPP waves in the far field. We ...
Added: January 15, 2021
M. : Faculty of Physics, MSU, 2017
The Low Temperature Physics Conference is an international event held every three years, under the auspices of the IUPAP through its Commission C5 on Low Temperature Physics. The aim of these conferences is to exchange information and views among the members of the international scientific community in the general field of Low Temperature Physics. It ...
Added: October 1, 2017
Kuzmichev S. A., Kuzmicheva T. E., Tchesnokov S. N. et al., Journal of Superconductivity and Novel Magnetism 2016 Vol. 29 No. 4 P. 1111-1116
We present temperature dependences of the large and the small superconducting gaps measured directly by SnS-Andreev spectroscopy in various Fe-based superconductors and MgB2. The experimental L,S(T ) are wellfitted with a two-gap model based on Moskalenko and Suhl system of equations (supplemented with a BCS integral renormalization). From the fitting procedure, we estimate the key ...
Added: March 19, 2016
Boldyrev K., Романов А., Хаула Е. et al., Journal of the American Ceramic Society 2019 Vol. 102 No. 5 P. 2745-2751
Single crystal of TlCl was doped with NIR photoluminescent univalent bismuth cations by prolonged immersion in liquid bismuth metal. The ion exchange Tl+ + Bi0 ↔ Tl0 + Bi+ at the crystal surface with subsequent Bi+ migration to the bulk are expected to drive the doping process. Contrary with Bi‐doped TlCl crystals, grown by Bridgman method, the ion exchange does ...
Added: February 8, 2019
Казанцев Д. В., Казанцева Е. А., Кузнецов Е. В. et al., Известия РАН. Серия физическая 2017 Т. 81 № 12 С. 1709-1714
Описаны принципы работы безапертурного сканирующего микроскопа ближнего оптического поля (ASNOM). Зондом в приборе служит металлизированная игла атомно-силового микроскопа, и оптическое взаимодействие с объектами на поверхности локализовано вблизи ее острия размером в несколько нанометров. Тело иглы имеет длину в несколько микрон, и это обеспечивает высокую эффективность ее электромагнитного взаимодействия с падающими на нее извне и излучаемыми ...
Added: December 6, 2020
Bodrova A., Osinsky A., Brilliantov N., Scientific Reports 2020 Vol. 10 Article 693
We study analytically and numerically the distribution of granular temperatures in granular mixtures for
different dissipation mechanisms of inelastic inter-particle collisions. Both driven and force-free systems
are analyzed. We demonstrate that the simplified model of a constant restitution coefficient fails to
predict even qualitatively a granular temperature distribution in a homogeneous cooling state. At the
same time we reveal ...
Added: February 25, 2020