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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Shabanov A. V., Presnyakov V. V., Zyryanov V. Y., Vetrov S. Y.
Заглавие : Characteristics of the process of reorientation of bipolar drops of a nematic with rigidly fixed poles
Место публикации : JETP Letters. - 1998. - Vol. 67, Is. 9. - P.733-737. - ISSN 0021-3640, DOI 10.1134/1.567739
Примечания : Cited References: 9
Аннотация: The director configuration in a bipolar drop of a nematic with rigidly fixed poles is calculated as a function of the electric field directed perpendicular to the symmetry axis of the drop. It is shown that the reorientation of the drop is a dual process: a threshold process in the region where the initial director orientation is orthogonal to the electric field, and a nonthreshold process elsewhere in the drop. A relation for determining the critical field is obtained. Experimental investigations of the characteristics of scattered light for a film of polymer-encapsulated liquid crystals confirm the computational results. (C) 1998 American Institute of Physics. [S0021-3640(98)01709-5].
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Вид документа : Статья из сборника (однотомник)
Шифр издания :
Автор(ы) : Gunyakov V. A., Myslivets S. A., Gerasimov V. P., Arkhipkin V. G., Zyryanov V. Ya., Shabanov V. F., Shabanov A. V., Vetrov S. Y., Kamaev G. N.
Заглавие : Control of transmission spectra of planar photonic crystal with LC defect
Коллективы : XV International Symposium on Advanced Display Technologies
Место публикации : Proceedings of SPIE - The International Society for Optical Engineering/ sponsors: SPIE Russia Chapter, P.N. Lebedev Physical Institute, Russia, Russian Foundation of Basic Research, Society for Information Display, Russia, European Office of Aerospace Research and Development ; XV International Symposium on Advanced Display Technologies (2006 ; 03.10 - 05.10 ; Moscow). - 2007. - 6637. - С. 66370L. - ISBN 0819467847, DOI 10.1117/12.742890 (Шифр 16957385)
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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Vetrov S. Y., Shabanov V. F.
Заглавие : Dissipative effects of the interaction of crystal-lattice surface with medium
Разночтения заглавия :авие SCOPUS: DISSIPATIVE EFFECTS OF THE INTERACTION OF CRYSTAL LATTICE SURFACE WITH MEDIUM
Место публикации : Phys. Status Solidi B. - 1987. - Vol. 140, Is. 1. - P.103-112. - ISSN 0370-1972
Примечания : Cited References: 14
Ключевые слова (''Своб.индексиров.''): electric conductivity - measurements--interferometry--silicon compounds - thin films--x-rays - diffraction--dissipative effects--multiple-reflection interferometry--silver and alloys
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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Timofeev I. V., Arkhipkin V. G., Vetrov S. Y., Zyryanov V. Ya., Lee W.
Заглавие : Enhanced light absorption with a cholesteric liquid crystal layer
Место публикации : Opt. Mater. Express. - 2013. - Vol. 3, Is. 4. - P.496-501. - DOI 10.1364/OME.3.000496
Аннотация: We discuss the trapping features of cholesteric liquid crystal as a self-organized photonic crystal and suggest it for absorption improvement. The imperfection of the absorbing surface is manifested by the reflection originating from the indispensable impedance mismatch. The reflection can be suppressed by an additional surface coating to reflect the light back to the absorber once again. In the simple consideration this reflection loop is possible only twice. For a right-handed CLC coating, the boundary reflection switches the light polarization from left to right circular in the first loop and it switches in the second loop back to the left circular polarization before the emerging light finally escapes from the absorbing process. The enhancement of light absorption is possible in the frequency range as large as the photonic bang gap of the cholesteric layer, which can be adjusted as desired.
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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Vetrov S. Y., Shabanov A. V.
Заглавие : Localized electromagnetic modes and the transmission spectrum of a one-dimensional photonic crystal with lattice defects
Место публикации : J. Exp. Theor. Phys.: AMER INST PHYSICS, 2001. - Vol. 93, Is. 5. - P977-984. - ISSN 1063-7761, DOI 10.1134/1.1427109
Примечания : Cited References: 26
Предметные рубрики: BAND-GAP
SPONTANEOUS EMISSION
SUPERLATTICES
WAVES
PROPAGATION
LIGHT
EDGE
Аннотация: The properties of localized electromagnetic modes in a one-dimensional photonic crystal with a structural defect layer were studied. The role of the defect was played by an anisotropic nematic liquid crystal layer. The frequency and the damping factor of defect modes were shown to substantially depend on the defect layer thickness and the orientation of the optical axis of the nematic. The transmission spectra of photonic crystals with one and two lattice defects were studied. Taking into account the special feature of nematic liquid crystals distinguishing them from usual crystals, namely, large permittivity anisotropy, it was shown that the transmission spectrum of the photonic crystal could be controlled by varying the orientation of the optical axis of the nematic, for instance, under the action of an external electric field. (C) 2001 MAIK "Nauka/Interperiodica".
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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Bikbaev R. G., Vetrov S. Y., Timofeev I. V., Shabanov V. F.
Заглавие : Nanoparticle shape optimization for Tamm-plasmon-polariton-based organic solar cells in the visible spectral range
Место публикации : Photonics. - 2022. - Vol. 9, Is. 11. - Ст.786. - ISSN 23046732 (ISSN), DOI 10.3390/photonics9110786
Примечания : Cited References: 28. - The reported study was funded by a grant of the President of the Russian Federation №MK-46.2021.1.2
Аннотация: The effect of the shape of the nanoparticles and the polarization of incident light on the surface current density and the efficiency of an organic solar cell based on the Tamm plasmon polariton is investigated. In the cases of both elongated and flattened nanoparticles, it is shown that the efficiency of such a solar cell is increased when the electric field vector is parallel to the largest axis of the spheroid.
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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Arkhipkin V. G., Gunyakov V. A., Myslivets S. A., Gerasimov V. P., Zyryanov V. Y., Vetrov S. Y., Shabanov V. F.
Заглавие : One-dimensional photonic crystals with a planar oriented nematic layer: Temperature and angular dependence of the spectra of defect modes
Место публикации : J. Exp. Theor. Phys.: MAIK NAUKA/INTERPERIODICA/SPRINGER, 2008. - Vol. 106, Is. 2. - P388-398. - ISSN 1063-7761, DOI 10.1134/S1063776108020179
Примечания : Cited References: 58
Предметные рубрики: LIQUID-CRYSTAL
TRANSMISSION SPECTRUM
BANDGAP STRUCTURES
PERIODIC STRUCTURE
REFRACTIVE-INDEX
LATTICE-DEFECTS
LASER
ENHANCEMENT
SILICON
MICROCAVITIES
Аннотация: Transmission spectra of a one-dimensional photonic crystal (PC) formed by two multilayer dielectric mirrors and a planar oriented layer of 5CB nematic liquid crystal (LC) that is sandwiched between these mirrors and serves as a structure defect are investigated experimentally. Specific features of the behavior of the spectrum of defect modes as a function of the angle of incidence of light on the crystal are studied for two polarizations: parallel and perpendicular to the director of the LC; the director either lies in the plane of incidence or is perpendicular to it. It is shown that, for the configurations considered, the maxima of the defect modes shift toward the short-wavelength region as the tilt angle of incidence radiation increases; this tendency is more manifest for the parallel-polarized component, when the director lies in the plane of incidence. In the latter case, the width of the photonic band gap (PBG) appreciably decreases. The temperature dependence of the polarization components of the transmission spectra of a PC is investigated in the case of normal incidence of light. The spectral shift of defect modes due to the variation of the refractive index of the LC at the nematic-isotropic liquid phase transition point is measured. It is shown that, in real PCs, the amplitude of defect modes decreases when approaching the center of the band gap, as well as when the number of layers in the dielectric mirrors increases. Theoretical transmission spectra of the PCs calculated by the method of recurrence relations with regard to the decay of defect modes are in good agreement with experimental data.
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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Rudakova N. V., Timofeev I. V., Vetrov S. Y.
Заглавие : Optical properties of nanostructured 2D metal-dielectric photonic crystals with a lattice defect
Коллективы : federal targeted program "Scientific and Pedagogical Personnel of Innovative Russia" [g/k 14.V37.21.0730]; Presidium of the Siberian Branch of the Russian Academy of Sciences [24.29]; Ministry of Education and Science of the Russian Federation [14.V37.21.0730]; OFN RAS [III.9.5]; Presidium of RAS [24.29, 24.31]; Siberian Branch of the Russian Academy of Sciences [43, 101]
Место публикации : Opt. Spectrosc.: MAIK NAUKA/INTERPERIODICA/SPRINGER, 2013. - Vol. 115, Is. 5. - P.660-665. - ISSN 0030-400X, DOI 10.1134/S0030400X13110209
Примечания : Cited References: 23. - This work was supported by the grants g/k 14.V37.21.0730 of the federal targeted program "Scientific and Pedagogical Personnel of Innovative Russia"; no. 24.29 of Presidium of the Siberian Branch of the Russian Academy of Sciences; the Ministry of Education and Science of the Russian Federation, Agreement 14.V37.21.0730; OFN RAS no. III.9.5; Presidium of RAS nos. 24.29 and 24.31; and Siberian Branch of the Russian Academy of Sciences, nos. 43 and 101.
Аннотация: Optical properties of 2D nanocomposite-based photonic crystals with a lattice defect are studied. The nanocomposite comprises metallic nanospheres dispersed in a transparent matrix and is characterized by an effective resonant permittivity. Transmission spectrum for s-polarized waves at oblique incidence is calculated. Spectral manifestation of the splitting of the defect mode when its frequency coincides with the resonant frequency of the nanocomposite is studied. The essential dependence of the splitting on the angle of incidence and concentration of metallic nanospheres in the nanocomposite matrix is established. Specific features of spatial distribution of the electric field intensity in defect modes of crystals are analyzed.
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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Vetrov S. Y., Bikbaev R. G., Timofeev I. V.
Заглавие : Optical Tamm states at the interface between a photonic crystal and a nanocomposite with resonance dispersion
Коллективы : Ministry of Education and Science of the Russian Federation [14.V37.21.0730, 14V37.21.0730]; Presidium of the Siberian Branch, Russian Academy of Sciences [24.29]; Division of Physical Sciences, Russian Academy of Sciences [Sh.9.5]; Presidium of the Russian Academy of Sciences [24.29, 24.31]; Siberian Branch, Russian Academy of Sciences [43, 101]
Место публикации : J. Exp. Theor. Phys.: MAIK NAUKA/INTERPERIODICA/SPRINGER, 2013. - Vol. 117, Is. 6. - P.988-998. - ISSN 1063-7761, DOI 10.1134/S1063776113140185. - ISSN 1090-6509
Примечания : Cited References: 28. - This work was supported by the Ministry of Education and Science of the Russian Federation (state contract no. 14.V37.21.0730, federal program "Human Capital for Science and Education in Innovative Russia"); by the Presidium of the Siberian Branch, Russian Academy of Sciences (project no. 24.29); by the Ministry of Education and Science of the Russian Federation (contract no. 14V37.21.0730); by the Division of Physical Sciences, Russian Academy of Sciences (project no. Sh.9.5); by the Presidium of the Russian Academy of Sciences (project nos. 24.29 and 24.31); and by the Siberian Branch, Russian Academy of Sciences (project nos. 43 and 101).
Предметные рубрики: LIGHT
TRANSMISSION
MEDIA
LAYER
Аннотация: Optical Tamm states localized at the edges of a photonic crystal bounded from one or both sides by a nanocomposite have been studied. The nanocomposite consists of metallic nanoinclusions, which have a spherical or orientationally ordered spheroidal shape and are dispersed in a transparent matrix, and is characterized by the resonant effective permittivity. The transmission, reflection, and absorption spectra have been calculated for waves with longitudinal and transverse polarizations in such structures at the normal incidence of light. The spectral manifestation of Tamm states that is due to the existence of negative values of the real part of the effective permittivity has been analyzed for the visible spectral range. It has been established that the characteristics of Tamm states localized at the edge of the photonic crystal depend strongly both on the concentration of nanoballs in the nanocomposite film and on its thickness. Modes formed by two coupled Tamm plasmon polaritons localized at the edges of the photonic crystal adjacent to two nanocomposite layers have been examined. It has been shown that, in the case of the anisotropic nanocomposite layer adjacent to the photonic crystal, each of two orthogonal polarizations of the incident wave corresponds to a specific frequency of the Tamm state localized at the edge; owing to this property, the transmission spectra of such a structure are polarization sensitive.
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10.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : VETROV S. Y., SADREEV A. F., SHABANOV A. V., SHABANOV V. F.
Заглавие : ORIENTATION STRUCTURE OF CAPSULATED CHOLESTERICS
Место публикации : Zhurnal Eksperimentalnoi Teor. Fiz.: MEZHDUNARODNAYA KNIGA, 1993. - Vol. 104, Is. 5. - P3630-3642. - ISSN 0044-4510
Примечания : Cited References: 27
Предметные рубрики: LIQUID-CRYSTALS
DROPLETS
DEPENDENCE
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