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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Samoshkina Yu. E., Edelman I. S., Chou, Hsiung, Petrov D. A., Zharkov S. M., Neznakhin, Dmitry, Stepanova, Elena, Stepanov, Andrey
Заглавие : Magnetic circular dichroism of Co nanoparticles localized in matrices of various types
Место публикации : Materialia. - 2023. - Vol. 28. - Ст.101759. - ISSN 25891529 (eISSN), DOI 10.1016/j.mtla.2023.101759
Примечания : Cited References: 28. - This work was supported by the Russian Science Foundation [grant number 21-72-00061]. Electron microscopic studies were carried out in the laboratory of electron microscopy of the Joint Scientific Center of the Siberian Federal University
Аннотация: Magnetic and magneto-optical properties of cobalt nanoparticles (Co-NPs) dispersed in a transparent dielectric SiO2 and semiconductor ZnO matrices have been investigated. Field and temperature dependences of the samples magnetization showed the typical behavior of an ensemble of superparamagnetic particles with a blocking temperature near and below room temperature. The spectroscopy of magnetic circular dichroism (MCD) in the visible and near-infrared light ranges has revealed a significant difference between the behavior of the Co-NPs and a solid Co film. It has been found that the MCD spectrum shape for the Co-NPs does not depend on the matrix type. The room temperature magneto-optical activity of the Co-NPs in the different matrices has been estimated as an indicator for practical applications.
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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Belyaev B. A., Tyurnev V. V., Khodenkov S. A.
Заглавие : The effective permittivity of an anisotropic composite of spheroidal particles in a dielectric matrix
Место публикации : Tech. Phys. Lett. - 2022. - Vol. 48, Is. 3. - P.110-114. - ISSN 10637850 (ISSN), DOI 10.1134/S1063785022040058
Примечания : Cited References: 10. - This study was carried out within the framework of state order FEFE-2020-0013 of the Ministry of Science and Higher Education of the Russian Federation
Аннотация: The concentration dependences of the effective permittivity have been obtained for an anisotropic composite consisting of a dielectric matrix filled with codirectional particles in the form of oblate or prolate ellipsoids of revolution (spheroids). The calculation has been made by solving numerically a system of coupled quadratic and integral equations obtained using the rigorous modification of the quasi-static Bruggeman theory. It is shown that the traditional simplified modification of the Bruggeman theory, which is widely used for calculating anisotropic composites, leads to errors of different signs for electromagnetic waves of the longitudinal and transverse polarizations relative to the spheroid axes. The dependences of the errors on the particle concentration are nonmonotonic and extrema observed in them can exceed 100%. The positions and values of the extrema depend strongly on the ellipticity of particles and the contrast of their permittivity with that of the matrix.
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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Bikbaev R. G., Pykhtin D. A., Vetrov S. Ya., Timofeev I. V., Shabanov V. F.
Заглавие : Nanostructured photosensitive layer for Tamm-plasmon-polariton-based organic solar cells
Место публикации : Appl. Opt. - 2022. - Vol. 61, Is. 17. - P.5049-5054. - ISSN 1559128X (ISSN), DOI 10.1364/AO.456413
Примечания : Cited References: 47. - Council on Grants of the President of the Russian Federation (MK-46.2021.1.2)
Аннотация: The influence of the volume fraction of plasmonic nanoparticles on the efficiency of the Tamm-plasmon-polariton-based organic solar cell is investigated in the framework of temporal coupled mode theory and confirmed by the transfer matrix method. It is shown that, unlike a conventional plasmonic solar cell, in which the efficiency is directly proportional to the volume fraction of nanoparticles in the photosensitive layer, the efficiency of the proposed solar cell reaches the highest value at low volume fractions. This effect is explained by the fact that at these volume fractions, the critical coupling condition of the incident field with the Tamm plasmon polariton is fulfilled. Thus, for the incoming radiation range of 350 to 500 nm, a maximal cell efficiency of 28% is achieved with a volume fraction of nanoparticles equal to 10%. Additionally, the optical properties of the photosensitive layer are compared for the cases of determining its complex refractive index by effective medium theory and the S-parameter retrieval method. A good agreement between the results is demonstrated, which encourages the use of the effective medium theory for preliminary calculations.
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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Aplesnin S. S., Udod L. V., Sitnikov M. N., Velikanov D. A., Molokeev M. S., Romanova O. B., Shabanov A. V.
Заглавие : Enhancement of ferromagnetism and ferroelectricity by oxygen vacancies in mullite Bi2Fe4O9 in the Bi2(Sn0.7Fe0.3)2O7-x matrix
Место публикации : J. Magn. Magn. Mater. - 2022. - Vol. 559. - Ст.169530. - ISSN 03048853 (ISSN), DOI 10.1016/j.jmmm.2022.169530
Примечания : Cited References: 47
Аннотация: A new bismuth pyrostannate-based composite Bi2(Sn0.7Fe0.3)2O7-x/Bi2Fe4O9 (BSFO/BFO) has been obtained by the solid-state synthesis. Temperature dependences of the magnetic hysteresis and remanent magnetization and the nonlinear field dependence of the magnetization for the Bi2Fe4O9 antiferromagnet have been established. A temperature of the formation of canted sublattices in the antiferromagnet with the occurrence of a spontaneous moment in mullite has been determined. The mechanism of the electric polarization hysteresis and the temperature dependence of the remanent polarization have been established. It has been shown, that, below the Néel temperature, the dipole polarization is induced by a lone electron pair of bismuth ions. At T TN, the migration polarization is caused by the charge carrier density at the chemical potential. A significant increase in the remanent magnetization of mullite in the bismuth pyrostannate matrix with oxygen vacancies over a value typical of polycrystalline mullite has been established. Remanent magnetization is explained in terms of ferron model.
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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Avdeeva A. Yu., Vetrov S. Ya., Timofeev I. V.
Заглавие : Splitting of a Tamm plasmon polariton at the interface between a metal and a resonant nanocomposite layer conjugated with a photonic crystal
Место публикации : J. Opt. Soc. Am. B. - 2021. - Vol. 38, Is. 6. - P.1792-1797. - ISSN 07403224 (ISSN), DOI 10.1364/JOSAB.420490
Примечания : Cited References: 36. - The reported study was funded by Russian Foundation for Basic Research, Government of Krasnoyarsk Territory, Krasnoyarsk Region Science and Technology Support Fund to the research project No. 19-42-240004 and by Russian Foundation for Basic Research, project No. 19-52-52006. The authors are thankful to Pavel S. Pankin for valuable discussions and comments
Аннотация: Splitting of a Tamm plasmon polariton at the interface between a metal and a nanocomposite layer conjugated with a photonic crystal (Bragg mirror) has been theoretically investigated. The splitting can be implemented when the Tamm plasmon polariton frequency approaches the resonance frequency of the nanocomposite, which consists of metallic nanoballs dispersed in a transparent matrix. The reflectance spectrum of the p-polarized waves at the normal incidence of light has been calculated. It has been established that the Tamm plasmon polariton splitting significantly depends on the concentration of nanoballs in the nanocomposite layer and its thickness. The solution of the dispersion equation derived for a sample with semi-infinite mirrors has been compared with the spectra obtained for a finite structure by the transfer matrix method.
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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Belyaev B. A., Leksikov An. A., Tyurnev V. V., Shabanov D. A.
Заглавие : Study of a composite consisting of metal nanoparticles in a dielectric matrix and multilayer bandpass filters based on it
Место публикации : Dokl. Phys. - 2021. - Vol. 66, Is. 3. - P.59-63. - ISSN 10283358, DOI 10.1134/S1028335821030010
Примечания : Cited References: 11. - This study was supported by the Ministry of Science and Higher Education of the Russian Federation within a State Assignment, project no. FEFE-2020-0013 “Development of the Theory of Self-Configuring Machine Learning Algorithms for Modeling and Predicting the Characteristics of Components of Complex Systems”
Аннотация: The frequency and concentration dependences of the effective complex permittivity of a composite consisting of silver nanoparticles in a polystyrene dielectric matrix have been investigated. It has been found that, with an increase in the volume concentration of particles in the composite to ~33%, the real part of its permittivity increases from 2.6 to ~103, while the loss tangent remains no higher than 10–2 up to a frequency of 1 THz. We show the possibility of designing bandpass filters based on composite layered structures, which can be tuned by selecting the particle concentration in the quarter-wavelength layers of the mirrors that ensure the optimal interaction of half-wavelength resonators with each other and the outer resonators with free space. The high contrast between the matrix and the composite permittivities makes it possible to create mirrors with a required reflectivity using a minimum number of layers.
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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Cheng, Lian, Liu, Kai, Wang, Mengqi, Fan, Pengyuan, Zhou, Changrong, Vtyurin A. N., Deng, Heming, Zhang, Ling, Zhang, Haibo, Hu, Yongming, Nan, B.o., Liu, Yang
Заглавие : Improvement of dielectric properties and energy storage performance in sandwich-structured P(VDF-CTFE) composites with low content of GO nanosheets
Место публикации : Nanotechnology. - 2021. - Vol. 32, Is. 42. - Ст.425702. - ISSN 0957-4484, DOI 10.1088/1361-6528/ac1295. - ISSN 1361-6528(eISSN)
Примечания : Cited References: 56. - The authers gratefully acknowledge the support by the National Natural Science Foundation of China: 51902111; DongGuan Innovation Research Team Program: 2020607101007; Dongguan Postgraduate Joint Training (Practice) Workstation: 2019707102018; Guangdong HUST Industrial Technology Research Institute, Guangdong Provincial Key Laboratory of Manufacturing Equipment Digitization: 2020B1212060014
Предметные рубрики: CHARGE-DISCHARGE EFFICIENCY
POLYMER NANOCOMPOSITES
BREAKDOWN STRENGTH
Аннотация: Polymer-based dielectric capacitors play a notable part in the practical application of energy storage devices. Graphene oxide (GO) nanosheets can improve the dielectric properties of polymer-based composites. However, the breakdown strength will greatly reduce with the increase of GO content. Hence, the construction of sandwich structure can enhance the breakdown strength without reducing the dielectric constant. Herein, single-layered and sandwich-structured poly(vinylidene fluoride-co-chlorotrifluoroethylene) (P(VDF-CTFE)) nanocomposites with low content of GO nanosheets (1.0 wt%) are prepared via employing a straightforward casting method. Compared with the single-layered composites and pure P(VDF-CTFE), the sandwich-structured composites exhibit comprehensively better performance compared. The sandwich-structured composite with 0.4 wt% GO nanosheets show an excellent dielectric constant of 13.6 (at 1 kHz) and an outstanding discharged energy density of 8.25 J cm−3 at 3400 kV cm−1. These results demonstrate that the growth of the dielectric properties is owing to 2D GO nanosheets and the enhancement of breakdown strength due to the sandwich structure. The results from finite element simulation provide theoretical support for the design of high energy density composites.
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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Serebrennikov D. A., Bykov A. A., Trigub A. L., Kolyshkin N. A., Freydman A. L., Aborkin A. V., Tovpinets A. O., Clementyev E. S., Goikhman A. Y.
Заглавие : Near zero thermal expansion in metal matrix composites based on intermediate valence systems: Al/SmB6
Место публикации : Results Phys. - 2021. - Vol. 21. - Ст.103843. - ISSN 22113797 (ISSN), DOI 10.1016/j.rinp.2021.103843
Примечания : Cited References: 45. - This work was supported by the Russian Foundation for Basic Research , grant 18-32-00583 mol_a and by the State assignment of Russia , project FZWM-2020-0008. We are grateful to V.N. Leitsin for his support in the experimental studies
Аннотация: This work is focused on the fabrication and characterization of a new type of composite invar materials combining near-zero thermal expansion and functional properties that are important for applications. This is accomplished through the use of particles of SmB6, an intermediate valence system with negative thermal expansion, embedded in Al matrix. The composite based on SmB6-21 vol% was fabricated by hot pressing and was characterized by XRD, optical/electron microscopy, X-ray computed tomography and capacitive dilatometry. The study of thermal expansion revealed that the sample exhibits invar behaviour up to ~60 K with a zero value of the coefficient of thermal expansion near 45 K. In comparison to pure aluminum, the temperature range has increased by about 20 K. A quantitative analysis of dilatometric experimental data performed on the basis of widely used theoretical models showed that the thermal expansion of the Al/SmB6 composite was well reproduced within the Turner model.
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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Vorotynov A. M., Rudenko V. V., Vorotynova O. V.
Заглавие : Exchange Interactions in the Cr3+–Cr3+ Ion Pair in the ABO3 (A = Ga, In, Sc) Diamagnetic Matrix
Коллективы : Russian Science FoundationRussian Science Foundation (RSF) [17-12-01111]
Место публикации : Phys. Solid State. - 2020. - Vol. 62, Is. 3. - P.454-457. - ISSN 1063-7834, DOI 10.1134/S1063783420030257. - ISSN 1090-6460(eISSN)
Примечания : Cited References: 10. - This study was supported by the Russian Science Foundation, project no. 17-12-01111.
Аннотация: The exchange interactions in the Cr3+–Cr3+ ion pairs in the isostructural ABO3 (A = Ga, In, Sc) diamagnetic compounds have been examined using the magnetic resonance technique. The values of bilinear and biquadratic exchange interactions have been determined. It is shown that the biquadratic exchange in the Cr3+–Cr3+ pair in these compounds is caused by the exchange striction.
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10.

Вид документа : Статья из сборника (выпуск продолж. издания)
Шифр издания :
Автор(ы) : Stebeleva O. P., Kashkina L. V., Petrakovskaya E. A., Rubleva T. V., Nikitin S. L., Vshivkova O. A.
Заглавие : Nonequilibrium carbon black suspensions used in synthesis of polymer composite material
Коллективы : International Scientific Conference on Metrological Support of Innovative Technologies
Место публикации : International Scientific Conference on Metrological Support of Innovative Technologies (2 ; 2020 ; 4 March ; Krasnoyarsk). Journal of Physics: Conference Series. - 2020. - Vol. 1515, Is. 2. - Ст.022003. - , DOI 10.1088/1742-6596/1515/2/022003
Примечания : Cited References: 9
Аннотация: Nowadays polymer matrix-based composite material with various carbon fillers are widely used to protect radioequipment from different interference, to improve characteristics of radar absorbing coatings. Current synthesis processes are sophisticated and rather costly. The challenge is to develop new methods of producing composite materials by efficient knowledge intensive technologies to reduce the cost of products. The paper studies possibility of producing composite material on the basis of elastic polyurethane foam with carbon fillers using polyurethane impregnation in nonequilibrium black carbon suspension. Suspension composition: running water and carbon-bearing powders of nanometer range: fullerene black carbon, Taunite (multi-layer carbon nano tube material), technical carbon T900, wood soot. Nonequilibrium suspension was produced by treatment in hydrodynamic generator of rotor type (cavitation mode). Angular rotation speed of the rotor ω = 10000 rpm.
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11.

Вид документа : Статья из сборника (однотомник)
Шифр издания :
Автор(ы) : Sherepa A. V., Zabluda V. N., Astankova K. N., Azarov I. A., Sokolov A. Е.
Заглавие : Magneto-optical properties of Ge nanoparticles in the GeO matrix
Коллективы : Asian School-Conference on Physics and Technology of Nanostructured Materials, Азиатская школа-конференция по физике и технологии наноструктурированных материалов
Место публикации : The Fifth Asian School-Conference on Physics and Technology of Nanostructured Materials: Proceedings. - VLadivostok: Dalnauka Publishing, 2020. - Ст.II.31.02p. - P.77. - ISBN 978-5-8044-1698-1
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12.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Bikbaev R. G., Vetrov S. Ya., Timofeev I. V.
Заглавие : Transparent conductive oxides for the epsilon-near-zero Tamm plasmon polaritons
Место публикации : J. Opt. Soc. Am. B. - 2019. - Vol. 36, Is. 10. - P.2817-2823. - ISSN 07403224 (ISSN), DOI 10.1364/JOSAB.36.002817
Примечания : Cited References: 44. - The reported study was funded by RFBR according to the research project No 18-32-00053 and financial support RFBR and MOST according to the research project No 19-52-52006.
Аннотация: We demonstrate the possibility of using transparent conducting oxides [aluminum-doped zinc oxide (AZO), gallium-doped zinc oxide (GZO), indium tin oxide (ITO)] to form Tamm plasmon polaritons in the near-infrared spectral range where the permittivity of oxides is near zero. The spectral properties of the structures are investigated in the framework of the temporal coupled-mode theory and confirmed by the transfer matrix method. It is found that in the critical coupling conditions, the maximal Q-factor of a Tamm plasmon polariton is achieved when a photonic crystal is conjugated with the AZO film, while at the conjugation with the ITO films, the broadest spectral line is obtained. The sensitivity of the wavelength and spectral width of the Tamm plasmon polariton to changes in the oxide film thickness, bulk concentration of a dopant, and angle of incidence is demonstrated.
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13.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Knyazev Yu. V., Yakushkin S. S., Balaev D. A., Dubrovskiy A. A., Semenov S. V., Bayukov O. A., Kirillov V. L., Martyanov O. N.
Заглавие : Magnetic Properties of Ultrafine ε-Fe2O3 Nanoparticles in a Silicon Xerogel Matrix
Место публикации : Bull. Russ. Acad. Sci. Phys. - 2019. - Vol. 83, Is. 7. - P.875-877. - ISSN 10628738 (ISSN), DOI 10.3103/S1062873819070219
Примечания : Cited References: 11
Аннотация: A new metamaterial is obtained on the basis of ε-Fe2O3 nanoparticles immobilized in a xerogel matrix. Samples are synthesized by impregnating SiO2 hydrogel with iron (II) salts with subsequent drying and calcination. The structure and magnetic properties of the composites are probed using transmission electron microscopy, X-ray diffraction, Mössbauer spectroscopy, and static magnetic measurements. © 2019, Allerton Press, Inc.
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14.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Korshunov M. A., Shabanov A. V., Bukhanov E. R., Shabanov V. F.
Заглавие : Effect of long-period ordering of the structure of a plant on the initial stages of photosynthesis
Место публикации : Dokl. Phys. - 2018. - Vol. 63, Is. 1. - P.1-4. - ISSN 10283358 (ISSN), DOI 10.1134/S1028335818010068
Примечания : Cited References: 15
Ключевые слова (''Своб.индексиров.''): electromagnetic fields--plants (botany)--density of photonic state--long wavelength--photosystems--plant leaves--soft modes--stopband--two bands--water dissociation--transfer matrix method
Аннотация: Using data on the structure of plant leaves, specific features of light propagation in biophotoniccrystal structures have been established by the transfer matrix method. Splitting of the stopband in two bands has been found. The density of photonic states and the electromagnetic field value have been calculated. The occurrence of two photosystems (splitting of the stopband in two bands), the peculiarity of the long-wavelength quantum yield and its enhancement (Emerson effect), and water dissociation in the soft mode due to an increase in the electromagnetic field on the layers are explained.
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15.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Belyaev B. A., Boev N. M., Izotov A. V., Solovyev P. N., Tyurnev V. V.
Заглавие : Study of the weak field sensor on the resonant microstrip structure with a thin ferromagnetic film
Место публикации : Russ. Phys. J. - 2018. - Vol. 61, Is. 8. - P.1367-1375. - ISSN 10648887 (ISSN), DOI 10.1007/s11182-018-1544-x
Примечания : Cited References: 19. - This research was performed with support of the Russian Ministry of Education and Science, project No. RFMEFI60417X0179.
Ключевые слова (''Своб.индексиров.''): microstrip resonator--thin magnetic film--frequency response--sensor of weak magnetic fields--quality factor--scattering matrix--magnetometer
Аннотация: The paper examines the characteristics of the miniature sensor of weak magnetic fields on the resonant microstrip structure with a thin ferromagnetic film. The authors calculated the frequency response of irregular microstrip resonator containing anisotropic magnetic film in quasi-static approximation. The resonator is connected to transmission lines via coupling capacities. The authors determined the optimal directional angles of the constant magnetic displacement field ensuring maximum sensitivity of the sensor. They examined the impact of angular and amplitude dispersion of uniaxial magnetic anisotropy of thin film upon the sensor characteristics. The regularities determined in this research qualitatively agree with the experimental results.
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16.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Mikhaleva E. A., Flerov I. N., Kartashev A. V., Gorev M. V., Molokeev M. S., Bogdanov E. V., Bondarev V. S., Korotkov L. N., Rysiakiewicz-Pasek E.
Заглавие : Effect of restricted geometry and external pressure on the phase transitions in ammonium hydrogen sulfate confined in a nanoporous glass matrix
Место публикации : J. Mater. Sci. - 2018. - Vol. 53, Is. 15. - P.12132–12144. - ISSN 00222461 (ISSN), DOI 10.1007/s10853-018-2467-1
Примечания : Cited References: 44. - The reported study was funded by Russian Foundation for Basic Research (RFBR) according to the Research Project No. 16-32-00092 mol_a.
Ключевые слова (''Своб.индексиров.''): hydraulics--hydrostatic pressure--permittivity--pore size--specific heat--sulfur compounds--thermal expansion
Аннотация: A study of heat capacity, thermal dilatation, susceptibility to hydrostatic pressure, permittivity and polarization loops was carried out on NH4HSO4–porous glass nanocomposites (AHS + PG) as well as empty glass matrices. The formation of dendrite clusters of AHS with a size, dcryst, exceeding the pore size was found. An insignificant anisotropy of thermal expansion of AHS + PG showing statistically uniform distribution of AHS with random orientations of nanocrystallites over the matrix was observed. The effect of internal and external pressures on thermal properties and permittivity was studied. At the phase transition P-1 ↔ Pc, a strongly nonlinear decrease in the entropy ΔS2 and volume strain (ΔV/V)T2 was observed with decreasing dcryst. The linear change in temperatures of both phase transitions P-1 ↔ Pc ↔ P21/c under hydrostatic pressure is accompanied by the expansion of the temperature range of existence of the ferroelectric phase Pc, while this interval narrows as dcryst decreases.
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17.

Вид документа : Статья из сборника (однотомник)
Шифр издания :
Автор(ы) : Dubrovskiy A. A.
Заглавие : Possibility of forming of ε-Fe2-phase in the xerogel matrix
Коллективы : Federal Research Center KSC SB RAS, Kirensky Institute of Physics, Research Institute of Agriculture and Ecology of the Arctic, Siberian Federal Univercity
Место публикации : International school/workshop on actual problems of condensed matter physics: Program. Book of abstracts/ ed. S. G. Ovchinnikov. - Norilsk, 2018. - P.12. - ISBN 978-5-904603-08-3
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18.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Rudakova N. V., Timofeev I. V., Pankin P. S., Vetrov S. Ya.
Заглавие : Polarization-preserving anisotropic mirror on the basis of metal–dielectric nanocomposite
Место публикации : Bull. Russ. Acad. Sci. Phys.: Allerton Press, 2017. - Vol. 81, Is. 1. - P.5-9. - ISSN 10628738 (ISSN), DOI 10.3103/S1062873817010257
Примечания : Cited References: 11. - The reported study was funded by the Ministry of Education and Science of the Russian Federation, project no. 3.1211.2017/PCH; SB RAS no. II.2P (0358-2015-0010); Scholarship of the President of the Russian Federation no. SP-227.2016.5; RFBR and Government of Krasnoyarsk Territory, Krasnoyarsk Region Science and Technology Support Fund to the research project no. 16-42-243065.
Ключевые слова (''Своб.индексиров.''): anisotropy--metal nanoparticles--mirrors--nanocomposites--nanoparticles--polarization--silver--a-plane--reflected light--reflection spectra--transparent matrix--metallic matrix composites
Аннотация: The model of a polarization-preserving anisotropic mirror is proposed. The mirror is a plane boundary of a metal–dielectric nanocomposite that consists of silver spheroidal nanoparticles dispersed in a transparent matrix. The dependence of reflection spectra on the shape of the nanoparticles is studied. It is shown that in one region of the spectrum, the mirror preserves the sign of polarization in the reflected light. © 2017, Allerton Press, Inc.
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