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Characteristics of the process of reorientation of bipolar drops of a nematic with rigidly fixed poles / A. V. Shabanov [et al.] // JETP Letters. - 1998. - Vol. 67, Is. 9. - P. 733-737, DOI 10.1134/1.567739. - Cited References: 9 . - ISSN 0021-3640

РУБ Physics, Multidisciplinary

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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Держатели документа:
Russian Acad Sci, LV Kirensky Phys Inst, Siberian Branch, Krasnoyarsk 660036, Russia
ИФ СО РАН
L. V. Kirenskii Institute of Physics, Siberian Branch, Russian Academy of Sciences, 660036 Krasnoyarsk, Russian Federation

Доп.точки доступа:
Shabanov, A. V.; Шабанов, Александр Васильевич; Presnyakov, V. V.; Zyryanov, V. Y.; Зырянов, Виктор Яковлевич; Vetrov, S. Y.
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Control of transmission spectra of planar photonic crystal with LC defect / V. A. Gunyakov [et al.] // 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, DOI 10.1117/12.742890 . - ISBN 0819467847

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Держатели документа:
Institute of Semiconductor Physics
Krasnoyarsk State Technical University
L.V. Kirensky Institute of Physics

Доп.точки доступа:
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; Gunyakov, V. A.; Гуняков, Владимир Алексеевич; Myslivets, S. A.; Мысливец, Сергей Александрович; Gerasimov, V. P.; Герасимов Виктор Петрович; Arkhipkin, V. G.; Архипкин Василий Григорьевич; Zyryanov, V. Ya.; Зырянов, Виктор Яковлевич; Shabanov, V. F.; Шабанов, Василий Филиппович; Shabanov, A. V.; Шабанов, Александр Васильевич; Vetrov, S. Y.; Kamaev, G. N.; XV International Symposium on Advanced Display Technologies(2006 ; 03.10 - 05.10 ; Moscow)
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    Enhanced light absorption with a cholesteric liquid crystal layer / I. V. Timofeev [et al.] // Opt. Mater. Express. - 2013. - Vol. 3, Is. 4. - P. 496-501DOI 10.1364/OME.3.000496
   Перевод заглавия: Усиление поглощения света при помощи холестерического жидкокристаллического слоя
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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Держатели документа:
Russian Acad Sci, Siberian Branch, Krasnoyarsk Sci Ctr, LV Kirensky Phys Inst, Krasnoyarsk 660036, Russia
Siberian Fed Univ, Krasnoyarsk 660041, Russia
Siberian State Aerosp Univ, Krasnoyarsk 660014, Russia
Natl Chiao Tung Univ, Coll Photon, Inst Imaging & Biomed Photon, Tainan 71150, Taiwan

Доп.точки доступа:
Timofeev, I. V.; Тимофеев, Иван Владимирович; Arkhipkin, V. G.; Архипкин, Василий Григорьевич; Vetrov, S. Y.; Zyryanov, V. Ya.; Зырянов, Виктор Яковлевич; Lee, W.
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Nanoparticle shape optimization for Tamm-plasmon-polariton-based organic solar cells in the visible spectral range / R. G. Bikbaev, S. Y. Vetrov, I. V. Timofeev, V. F. Shabanov // Photonics. - 2022. - Vol. 9, Is. 11. - Ст. 786, DOI 10.3390/photonics9110786. - Cited References: 28. - The reported study was funded by a grant of the President of the Russian Federation №MK-46.2021.1.2 . - ISSN 2304-6732
Кл.слова (ненормированные):
photonic crystal -- Tamm plasmon polariton -- organic solar cell
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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Держатели документа:
Kirensky Institute of Physics, Federal Research Center KSC SB RAS, Krasnoyarsk, 660036, Russian Federation
Siberian Federal University, Krasnoyarsk, 660041, Russian Federation

Доп.точки доступа:
Bikbaev, R. G.; Бикбаев, Рашид Гельмединович; Vetrov, S. Y.; Timofeev, I. V.; Тимофеев, Иван Владимирович; Shabanov, V. F.; Шабанов, Василий Филиппович
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One-dimensional photonic crystals with a planar oriented nematic layer: Temperature and angular dependence of the spectra of defect modes / V. G. Arkhipkin [et al.] // J. Exp. Theor. Phys. - 2008. - Vol. 106, Is. 2. - P. 388-398, DOI 10.1134/S1063776108020179. - Cited References: 58 . - ISSN 1063-7761

РУБ Physics, Multidisciplinary
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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Держатели документа:
[Arkhipkin, V. G.
Gunyakov, V. A.
Myslivets, S. A.
Gerasimov, V. P.
Zyryanov, V. Ya.
Vetrov, S. Ya.
Shabanov, V. F.] Russian Acad Sci, Siberian Branch, Kirenskii Inst Phys, Krasnoyarsk 660036, Russia
ИФ СО РАН

Доп.точки доступа:
Arkhipkin, V. G.; Архипкин, Василий Григорьевич; Gunyakov, V. A.; Гуняков, Владимир Алексеевич; Myslivets, S. A.; Мысливец, Сергей Александрович; Gerasimov, V. P.; Герасимов, Виктор Петрович; Zyryanov, V. Y.; Зырянов, Виктор Яковлевич; Vetrov, S. Y.; Shabanov, V. F.; Шабанов, Василий Филиппович
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ORIENTATION STRUCTURE OF CAPSULATED CHOLESTERICS / S. Y. VETROV [и др.] // Zhurnal Eksperimentalnoi Teor. Fiz. - 1993. - Vol. 104, Is. 5. - P. 3630-3642. - Cited References: 27 . - ISSN 0044-4510

РУБ Physics, Multidisciplinary
Рубрики:
LIQUID-CRYSTALS
DROPLETS
DEPENDENCE

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Доп.точки доступа:
VETROV, S. Y.; SADREEV, A. F.; SHABANOV, A. V.; SHABANOV, V. F.
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Photonic crystals with resonantly absorbing defects / V. G. Arkhipkin [et al.] ; ed. Vetrov, SY // LFNM 2006: 8th International Conference on Laser and Fiber-Optical Networks Modeling, Proceedings : IEEE, 2006. - P. 313-316. - Cited References: 12 . - ISBN 1-4244-0233-6

РУБ Instruments & Instrumentation + Optics + Telecommunications
Рубрики:
MICROCAVITIES
DISPERSION
SPECTRA
Кл.слова (ненормированные):
photonic crystal -- photonic band gap -- resonantly absorbing gas -- light localization
Аннотация: We show that the defect mode of photonic crystal with resonantly absorbing gas in defect is splitted due to effects of linear absorption and dispersion of resonant atoms. The splitting and shape of the lines is very sensitive to an incidence-angle of radiation on PC. The cases of one and two defects are considered.

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Доп.точки доступа:
Arkhipkin, V. G.; Архипкин, Василий Григорьевич; Myslivets, S. A.; Мысливец, Сергей Александрович; Timofeev, I. V.; Тимофеев, Иван Владимирович; Shabanov, A. V.; Шабанов, Александр Васильевич; Vetrov, S. Ya.; Ветров, Степан Яковлевич; Timofeev, V. P.; Vetrov, S. Y. \ed.\; International Conference on Laser and Fiber-Optical Networks Modeling (8 ; 2006 ; Jun 29-Jul 01 ; Kharkiv)
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Rudakova, N. V.
Optical properties of nanostructured 2D metal-dielectric photonic crystals with a lattice defect / N. V. Rudakova, I. V. Timofeev, S. Y. Vetrov // Opt. Spectrosc. - 2013. - Vol. 115, Is. 5. - P. 660-665, DOI 10.1134/S0030400X13110209. - 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. . - ISSN 0030-400X

РУБ Optics + Spectroscopy

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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Публикация на русском языке Оптические свойства наноструктурированных металл-диэлектрических двумерных фотонных кристаллов с дефектом решетки. - [S. l. : s. n.]

Держатели документа:
Siberian Fed Univ, Krasnoyarsk 660074, Russia
Russian Acad Sci, LV Kirensky Phys Inst, Siberian Branch, Krasnoyarsk 660036, Russia

Доп.точки доступа:
Timofeev, I. V.; Тимофеев, Иван Владимирович; Vetrov, S. Y.; 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]
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Shabanov, A. V.
Reflection spectrum of a cholesteric liquid crystal with structural defects / A. V. Shabanov, S. Y. Vetrov, A. Y. Karneev // JETP Letters. - 2004. - Vol. 80, Is. 3. - P. 181-184, DOI 10.1134/1.1808846. - Cited References: 13 . - ISSN 0021-3640

РУБ Physics, Multidisciplinary
Рубрики:
MODES
Аннотация: An expression is obtained for the reflection coefficient of circularly polarized light normally incident on the film of a cholesteric liquid crystal with a variable helix pitch. It is shown that, in the case of a single defect (local change in the helix pitch), the spectrum of light reflection from a cholesteric acquires a dip corresponding to the defect mode. New qualitative features appear in the reflection spectrum of a cholesteric with two defects as the distance between them varies. (C) 2004 MAIK "Nauka/Interperiodica".

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Держатели документа:
Russian Acad Sci, LV Kirensky Phys Inst, Siberian Div, Krasnoyarsk 660036, Russia
Krasnoyarsk State Tech Univ, Krasnoyarsk 660074, Russia
ИФ СО РАН
Kirenskii Institute of Physics, Siberian Division, Russian Academy of Sciences, Krasnoyarsk, 660036, Russian Federation
Krasnoyarsk State Technical Unversity, Krasnoyarsk, 660074, Russian Federation

Доп.точки доступа:
Vetrov, S. Y.; Karneev, A. Y.; Шабанов, Александр Васильевич
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10.

Spectral properties of a two-dimensional resonant metal-dielectric photonic crystal / S. Y. Vetrov [et al.] // Opt. Spectrosc. - 2012. - Vol. 112, Is. 4. - P. 585-593, DOI 10.1134/S0030400X12030204. - Cited References: 17. - This work was supported by grants RNP no. 2.1.1/3455, OFN RAN no. 3.9.1, Presidium of the Russian Academy of Sciences no. 21.1, and "Integration" SO RAN nos. 5 and 144. . - ISSN 0030-400X

РУБ Optics + Spectroscopy
Рубрики:
HETEROGENEOUS MEDIA
OPTICAL-PROPERTIES
Аннотация: We have studied the transmission spectra of resonant two-dimensional photonic crystals of two types, one of which consists of nanocomposite cylinders that form a square lattice in vacuum and the other of which consists of cylindrical holes that form a square lattice in nanocomposite matrix. The nanocomposite consists of metallic nanospheres that are dispersed in a transparent matrix and is characterized by an effective resonant dielectric permittivity. We show that, depending on the position of the resonant frequency of the nanocomposite with respect to the boundaries of the band gap, there arises either an additional transmission band in the transmission spectrum in the band gap or an additional band gap in the continuous spectrum of the photonic crystal. As the structural and geometric parameters of the system change, both the additional transmission band and the additional band gap are considerably modified. We analyze particular features of the spatial distribution of the electromagnetic field intensity in crystals. The considered effects can be used to extend the possibilities of creating new photonic crystals with specified properties.

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Публикация на русском языке Спектральные свойства двумерного металл-диэлектрического резонансного фотонного кристалла [Текст] / С. Я. Ветров [и др.] // Оптика и спектроскопия : Наука, 2012. - Т. 112 № 4. - С. 638–646

Держатели документа:
[Vetrov, S. Ya
Rudakova, N. V.
Timofeev, V. P.] Siberian Fed Univ, Krasnoyarsk 660074, Russia
[Timofeev, I. V.] Russian Acad Sci, LV Kirensky Phys Inst, Siberian Branch, Krasnoyarsk 660036, Russia

Доп.точки доступа:
Vetrov, S. Y.; Rudakova, N. V.; Timofeev, I. V.; Тимофеев, Иван Владимирович; Timofeev, V. P.
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