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1.

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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2.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Prishchepa O. O., Shabanov A. V., Zyryanov V. Y.
Заглавие : Director configurations in nematic droplets with inhomogeneous boundary conditions
Место публикации : Phys. Rev. E: AMERICAN PHYSICAL SOC, 2005. - Vol. 72, Is. 3. - Ст.31712. - ISSN 1539-3755, DOI 10.1103/PhysRevE.72.031712
Примечания : Cited References: 22
Предметные рубрики: DISPERSED LIQUID-CRYSTALS
TRANSITION
Ключевые слова (''Своб.индексиров.''): lecithin contents--nematic droplets--polarizers--radial structures--approximation theory--boundary conditions--drop breakup--free energy--polarization--textures--nematic liquid crystals
Аннотация: The nematic droplets with director configurations intermediate between the bipolar and radial structures have been investigated experimentally and theoretically. The liquid crystal 4(')-n-pentyl-4-cyanobiphenyl (5CB) with a variable addition of the lecithin dispersed in polyvinylbutyral has been used. The characteristic textures of the droplets formed at various lecithin contents have been examined using polarizing microscope both in the crossed polarizers and without analyzer. The computer simulation has been performed for proper ordering of the director in spherical nematic droplets by minimizing the free energy in the one-constant approximation. The inhomogeneous boundary conditions with strong anchoring of the molecules at the interface have been used. The distribution of the anchoring angle at the droplet surface has been estimated based on analysis of observed patterns. The simulated textures of the droplets under crossed polarizers are shown to compare well with the experimental ones.
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3.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Arkhipkin V. G., Gunyakov V. A., Myslivets S. A., Zyryanov V. Y., Shabanov V. F., Lee W.
Заглавие : Electro- and magneto-optical switching of defect modes in one- dimensional photonic crystals
Место публикации : J. Exp. Theor. Phys.: MAIK NAUKA/INTERPERIODICA/SPRINGER, 2011. - Vol. 112, Is. 4. - P577-587. - ISSN 1063-7761, DOI 10.1134/S1063776111040017
Примечания : Cited References: 35. - We thank A. M. Parshin for help with the magneto-optical measurements. This work was supported by grant no. NSC98-2923-M-033-001-MY3; nos. 27.1 and 9.1 RAS; nos. 5 and 144 SB RAS; State contract no. 02.740.11.0220 ("Scientific and Scientific-Pedagogical Personnel of Innovational Russia" Federal Goal-Oriented Program).
Предметные рубрики: NEMATIC LIQUID-CRYSTALS
Ключевые слова (''Своб.индексиров.''): crossed polarizers--defect mode--experimental data--magnetic field strengths--magneto-optical--polarized light waves--transmission spectrums--defects--light transmission--magnetic fields--magnetos--optical switches--photonic crystals
Аннотация: The transmission spectra of polarized light waves in a photonic crystal/liquid crystal (PC/LC) cell placed between crossed polarizers and controlled by an electric or magnetic field have been studied experimentally and theoretically. Electro- and magneto-optical switching based on the interference of polarized defect modes has been demonstrated. The transmission spectra of the PC/LC cell have been calculated as a function of the voltage applied to the LC layer and the magnetic field strength. The results of the calculations agree well with the experimental data.
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4.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Krakhalev M. N., Loiko V. A., Zyryanov V. Y.
Заглавие : Electro-Optical Characteristics of Polymer-Dispersed Liquid Crystal Film Controlled by Ionic-Surfactant Method
Разночтения заглавия :авие SCOPUS: Electro-optical characteristics of polymer-dispersed liquid crystal film controlled by ionic-surfactant method
Место публикации : Tech. Phys. Lett.: MAIK NAUKA/INTERPERIODICA/SPRINGER, 2011. - Vol. 37, Is. 1. - P34-36. - ISSN 1063-7850, DOI 10.1134/S1063785011010056
Примечания : Cited References: 5. - This study was supported in part by Russian Federal Agencies (project nos. P901 and 02.740.11.0220), the Russian Foundation for Basic Research (project no. 08-03-01007), and the Siberian Branch of the Russian Academy of Sciences (project nos. 27.1, 110, and 144).
Аннотация: The electro-optical characteristics of a composite film based on a polymer containing dispersed nematic liquid crystal (NLC) doped with an ionic surfactant have been studied. The threshold character of the reorientation of NLC droplets as well as the dependence of the modulation amplitude of light transmission on the electric field strength has been revealed for the effect of ionic modification of surface anchoring. The dynamical parameters of the optical response have been determined.
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5.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Hsiao Y. C., Wu C. Y., Chen C. H., Lee W., Zyryanov V. Y.
Заглавие : Electro-optical device based on photonic structure with a dual-frequency cholesteric liquid crystal
Место публикации : Optics Letters: Optical Society of America, 2011. - Т. 36, № 14. - С. 2632-2634. - ISSN 0146-9592, DOI 10.1364/OL.36.002632. - ISSN 1539-4794(eissn)
РИНЦ
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6.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Zyryanov V. Y., Presnyakov V. V., Shabanov V. F.
Заглавие : Frederix effect in polymer-capsulated nematic drops
Место публикации : Pisma Zhurnal Tek. Fiz.: MEZHDUNARODNAYA KNIGA, 1996. - Vol. 22, Is. 14. - P22-26. - ISSN 0320-0116
Примечания : Cited References: 6
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7.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Prishchepa O. O., Shabanov A. V., Zyryanov V. Y., Parshin A. M., Nazarov V. G.
Заглавие : Friedericksz threshold field in bipolar nematic droplets with strong surface anchoring
Место публикации : JETP Letters. - 2007. - Vol. 84, Is. 11. - P.607-612. - ISSN 0021-3640, DOI 10.1134/S0021364006230081
Примечания : Cited References: 11
Предметные рубрики: FRANK CONSTANTS
Ключевые слова (''Своб.индексиров.''): 61.30.-v
Аннотация: A numerical method has been developed for calculating the director configuration in ellipsoidal droplets of a nematic liquid crystal with strong tangential anchoring in a uniform magnetic field of an arbitrary orientation. A relation has been obtained for determining the Friedericksz threshold corresponding to the beginning of the reorientation of the central region of a droplet when the field is orthogonal to the biopolar axis. The effect of the breaking of the orthogonal condition on the threshold character of the orientation process is considered. The reorientation of the ensemble of bipolar droplets of the 5CB nematic liquid crystal dispersed in polyvinyl butyral has been studied by the magneto-optical method. Comparative analysis of calculation data and measured values of the threshold field has been performed.
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8.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Barannik A. V., Shabanov A. V., Zyryanov V. Y.
Заглавие : Interference oscillations in the dynamics of the optical response of polymer dispersed nematic liquid crystals
Место публикации : Tech. Phys. Lett.: AMER INST PHYSICS, 2002. - Vol. 28, Is. 8. - P675-677. - ISSN 1063-7850, DOI 10.1134/1.1505547
Примечания : Cited References: 14
Предметные рубрики: REORIENTATION
MONOLAYER
Аннотация: The dynamics of the optical response of a polymer-dispersed nematic liquid crystal under the action of electric field pulses was experimentally studied for film samples differing in the size of nematic droplets. The optical signal relaxation curve exhibits an oscillating character, with the number of oscillations determined by the transverse size of the nematic droplets. The interference character of the signal oscillations is confirmed by an analysis of the oscillating response within the framework of the anomalous diffraction approximation and by a comparison with the dependence of the transmitted light intensity on the applied voltage measured in a static regime. (C) 2002 MAIK "Nauka / Interperiodica".
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9.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Konkolovich A. V., Presnyakov V. V., Zyryanov V. Y., Loiko V. A., Shabanov V. F.
Заглавие : Interference quenching of light transmitted through a monolayer film of polymer-dispersed nematic liquid crystal
Место публикации : JETP Letters. - 2000. - Vol. 71, Is. 12. - P.486-488. - ISSN 0021-3640
Примечания : Cited References: 8
Аннотация: A theoretical study of light transmission through a polymer with a monolayer ensemble of bipolar nematic droplets under applied electric film is performed. The possibility of interference quenching of monochromatic coherent light directly transmitted through the film is predicted theoretically and realized in the experiment. (C) 2000 MAIK "Nauka/Interperiodica".
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10.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Gunyakov V. A., Myslivets S. A., Parshin A. M., Zyryanov V. Y., Arkhipkin V. G., Shabanov V. F.
Заглавие : Magnetic-field control of the transmission of a photonic crystal with a liquid-crystal defect
Коллективы :
Место публикации : Tech. Phys.: MAIK NAUKA/INTERPERIODICA/SPRINGER, 2010. - Vol. 55, Is. 10. - P1484-1489. - ISSN 1063-7842, DOI 10.1134/S1063784210100142
Примечания : Cited References: 16. - This study was supported by the Russian Academy of Sciences (grant nos. NSh-3818.2008.3, RNP.2.1.1.3455, 27.1, and 9.1), Siberian Branch, Russian Academy of Sciences (grant nos. 5 and 144), State contract no. 02. 740.11.0220, and the Federal program "Scientific Manpower and Pedagogical Staff of Innovative Russia."
Предметные рубрики: ORIENTATION
LAYER
Аннотация: The method of modulation of transmittance of a multilayer photonic crystal with a nematic liquid-crystal defect upon the orientational transition from the homeotropic to the planar state is investigated. The orientation of the director of the nematic is controlled by a magnetic field in the B-effect mode. The method of recurrent relations is used for numerical simulation of transmission spectra of the photonic crystal structure under investigation.
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