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    Electro-optical response of an ionic-surfactantdoped nematic cell with homeoplanar-twisted configuration transition / V. S. Sutormin [et al.] // Opt. Mater. Express. - 2014. - Vol. 4, Is. 4. - P. 810-815, DOI 10.1364/OME.4.000810. - Cited References: 16. - This work was partially supported by the Russian Foundation for Basic Research (project No. 12-03-00816), and by the Siberian Branch of the Russian Academy of Sciences (SB RAS) through Grants Nos. 30, 24.32, and by the Ministry of Science and Technology of Taiwan under Grant No. NSC 103-2923-M-009-003-MY3 through an NSC-SB-RAS joint project. . - ISSN 2159-3930
   Перевод заглавия: Электрооптический отклик ячейки, заполненной нематиком, допированным ионным сурфактантом, при переходе от гомеопланарной к твист конфигурации.

РУБ Materials Science, Multidisciplinary + Optics
Рубрики:
LIQUID-CRYSTAL
   ORIENTATION
   SURFACES
   LAYER
Аннотация: This study is concerned with the optical response of an electro-optical material consisting of nematic liquid crystal as well as ionic surfactant as a dopant. The dopant is a key component to carry out the working of the resulting device through configuration switching. The operational principle is based on the surface anchoring transition induced by a steady electric field. The dynamic characteristics of the electro-optical cell can be considerably improved when the nematic layer is reoriented from the initially homeoplanar director configuration into the twisted state. Besides, a method to shorten the relaxation time is demonstrated by using a controlling pulse with a bipolar waveform. (C)2014 Optical Society of America

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Держатели документа:
Russian Acad Sci, Krasnoyarsk Sci Ctr, Kirensky Inst Phys, Siberian Branch, Krasnoyarsk 660036, Russia
Siberian Fed Univ, Krasnoyarsk 660041, Russia
Natl Chiao Tung Univ, Coll Photon, Tainan 71150, Taiwan

Доп.точки доступа:
Sutormin, V. S.; Сутормин, Виталий Сергеевич; Krakhalev, M. N.; Крахалев, Михаил Николаевич; Prishchepa, O. O.; Прищепа, Оксана Олеговна; Lee, W.; Zyryanov, V. Ya.; Зырянов, Виктор Яковлевич; Russian Foundation for Basic Research [12-03-00816]; Siberian Branch of the Russian Academy of Sciences (SB RAS) [30, 24.32]; Ministry of Science and Technology of Taiwan through an NSC-SB-RAS joint project [NSC 103-2923-M-009-003-MY3]
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    Киренский, Леонид Васильевич.
    Конфигурация доменов в ферромагнитных кристаллах [Текст] / Л. В. Киренский // Кристаллография. - 1959. - Т. 4, Вып. 5. - С. 702-709. - Библиогр.: 6 назв. - Phys. Abstr. - 1960. - Vol. 63, 13793
   Перевод заглавия: Configuration of the domains in ferromagnetic crystals

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Держатели документа:
Институт физики Сибирского отделения АН СССР

Доп.точки доступа:
Савченко, Михаил Кириллович; Savchenko, M. K.; Kirensky, L. V.
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    Parshin, A. M.
    The director field distribution with the strongly pinned alignment in nematic structures at the polymer surface / A. M. Parshin, V. Y. Zyryanov, V. F. Shabanov // Liq. Cryst. - 2015. - Vol. 42, Is. 1. - P. 57-64, DOI 10.1080/02678292.2014.960904. - Cited References:18. - This work was partially supported by the Russian Foundation for BasicResearch [project No. 12-03-00816] and by the Siberian Branch of theRussian Academy of Sciences (SB RAS) [grants nos. 30, 24.29, 24.32] andby SB RAS through a Taiwan-SB RAS joint project. . - ISSN 0267. - ISSN 1366-5855
   Перевод заглавия: Распределение поля директора с сильно фиксированным упорядочением в нематических структурах на поверхности полимера

РУБ Chemistry, Multidisciplinary + Crystallography + Materials Science,
Рубрики:
LIQUID-CRYSTALS
DISCLINATION LINES
DEFECTS
Кл.слова (ненормированные):
orientational order -- disclination -- adsorption -- nematic -- polymer surface -- director configuration
Аннотация: We investigate orientational nematic liquid crystal structures that form at the polymer surface due to adsorption, their stability against the schlieren texture and features of point and linear singularities in them. We demonstrate that surface disclination lines, which also occur due to molecular adsorption, can lead to azimuthal anchoring of a bulk layer and make the singularities with the charge m=+/- 1 stable. We consider the director field distribution in a nematic layer as a result of the combination of two aligning factors, which are the linear disclination that tend to impose uniform planar ordering and point defects that impart the radial configuration to the director. With the use of the calculation, we analyse the energies of elastic distortions of the director field for the radial-planar, radial-homeotropic and radial-radial configurations, depending on the nematic layer thickness.

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Держатели документа:
Russian Acad Sci, LV Kirensky Phys Inst, Krasnoyarsk Sci Ctr, Siberian Branch, Krasnoyarsk, Russia.
Siberian Fed Univ, Dept Energy, Krasnoyarsk, Russia.

Доп.точки доступа:
Zyryanov, V. Ya.; Зырянов, Виктор Яковлевич; Shabanov, V. F.; Шабанов, Василий Филиппович; Паршин, Александр Михайлович; Russian Foundation for Basic Research [12-03-00816]; Siberian Branch ofthe Russian Academy of Sciences (SB RAS) [30, 24.29, 24.32]; SB RASthrough a Taiwan-SB RAS joint project
}
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    Паршин, Александр Михайлович.
    Конфигурации директора в структурах нематика, адсорбированного на поверхности полимера / А. М. Паршин, В. Я. Зырянов, В. Ф. Шабанов // Жидк. кристаллы и их практич. использ. - 2015. - Т. 15, Вып. 1. - С. 56-65 ; Liquid Crystals and their Application. - Библиогр.: 20. - Работа выполнена частично при финансовой поддержке программ Президиума РАН и РФФИ (грант № 15-02-06924). . - ISSN 1991-3966
   Перевод заглавия: Director configurations in the structures of the nematic adsorbed on a polymer surface
Кл.слова (ненормированные):
нематический жидкий кристалл -- полимер -- адсорбция -- дисклинация -- конфигурация директора -- nematic liquid crystal -- polymer -- adsorption -- disclination -- director configuration
Аннотация: Исследованы ориентационные структуры нематических жидких кристаллов, возникающие на поверхности полимера в результате адсорбции, и их устойчивость относительно шлирен-текстуры. Изучены особенности точечных и линейных сингулярностей в исследуемых структурах. Рассмотрены конфигурации директора в слое нематика, определяемые комбинацией двух ориентирующих факторов: воздействием линейной дисклинации, фактора, стремящегося задать однородное планарное упорядочение, а также влиянием точечного дефекта, задающего радиальную структуру директора. С использованием расчетного метода проведен сравнительный анализ энергии упругих искажений поля директора для различных видов конфигураций: радиально-планарной, радиально-гомеотропной и радиально-радиальной в зависимости от толщины слоя нематика.
The orientational structures of nematic liquid crystals that form at the polymer surface due to adsorption and their stability with respect to the schlieren texture are investigated. Features of point and linear singularities in these structures are studied. The director configurations in nematic layer as a result of the combination of two aligning factors, which are the linear disclination that tends to impose uniform planar ordering and point defect that imparts the radial structure to the director are considered. The analysis of the elastic distortions energies of the director configurations for the radial-planar, radial-homeotropic and radial-radial structures, depending on the nematic layer thickness was performed using the calculation method.

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Держатели документа:
Институт физики им. Л.В. Киренского СО РАН

Доп.точки доступа:
Зырянов, Виктор Яковлевич; Zyryanov, V. Ya.; Шабанов, Василий Филиппович; Shabanov, V. F.; Parshin, A. M.

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    Experimental results and theoretical model to describe angular dependence of light scattering by monolayer of nematic droplets / V. A. Loiko [et al.] // J. Quant. Spectrosc. Radiat. Transf. - 2016. - Vol. 178: Electromagnetic and light scattering by nonspherical particles XV: Celebrating 150 years of Maxwell's electromagnetics. - P. 263-268, DOI 10.1016/j.jqsrt.2015.10.024. - Cited References:25 . - ISSN 0022-4073. - ISSN 1879-1352
   Перевод заглавия: Экспериментальные результаты и теоретическая модель, описывающая угловую зависимость рассеяния света монослоем капель нематика

РУБ Optics + Spectroscopy
Рубрики:
Dispersed liquid-crystals
   Inhomogeneous boundary-conditions
   Films
   Transmittance
   Radiation
Кл.слова (ненормированные):
Polymer-dispersed liquid crystal film -- Liquid crystal droplet -- Director -- configuration -- Light scattering -- Monolayer of droplets
Аннотация: Light scattering by a monolayer of bipolar nematic droplets encapsulated in polymer film is examined both experimentally and theoretically. A method for the simulation of the angular distribution of scattered light is based on the anomalous diffraction and interference approximations taking into account the director configuration within liquid crystal droplets and their bipolar axes orientation. The director configuration in nematic droplets is calculated using the relaxation method of the free energy minimization. The characteristics of the sample, including distribution of droplet sizes and shape anisometry, are measured in details. The experimental results and theoretical data agree closely with each other. (C) 2015 Elsevier Ltd. All rights reserved.

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Доп.точки доступа:
Loiko, V. A.; Krakhalev, M. N.; Крахалев, Михаил Николаевич; Konkolovich, A. V.; Prishchepa, O. O.; Прищепа, Оксана Олеговна; Miskevich, A. A.; Zyryanov, V. Ya.; Зырянов, Виктор Яковлевич; Conference on Electromagnetic and Light Scattering(15 ; June 21-26, 2015 ; Leipzig, Germany)
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Model of electron pressure anisotropy in the electron diffusion region of collisionless magnetic reconnection / A. . Divin [et al.] // Phys. Plasmas. - 2010. - Vol. 17, Is. 12. - Ст. 122102, DOI 10.1063/1.3521576. - Cited References: 42. - The present work is supported partially by the Onderzoekfonds KU Leuven (Research Fund KU Leuven) and by the European Commission's Seventh Framework Programme (FP7/2007-2013) under grant Agreement No. 218816 (SOTERIA project, www.soteria- space.eu). Additional support is provided by RFBR (Grant No. 09-05-91000-ANF-a). V.S.S. thanks ISSI for hospitality and financial support. The simulations were conducted on the resources of the Vlaams Supercomputer Centrum (VSC) at the Katholieke Universiteit Leuven. . - ISSN 1070-664X

РУБ Physics, Fluids & Plasmas
Рубрики:
CURRENT SHEETS
   X-LINE
   PLASMA
   DISSIPATION
   FIELD
   SIMULATIONS
   ACCELERATION
   TRANSPORT
Кл.слова (ненормированные):
Analytical results -- Antiparallel configuration -- Collisionless -- Electron diffusion -- Electron population -- Electron pressures -- Magnetic reconnections -- Neutral line -- New model -- Particle-in-cell simulations -- Two particles -- Anisotropy -- Astrophysics -- Collisionless plasmas -- Computer simulation -- Diffusion -- Geophysics -- Magnetic fields -- Magnetic properties -- Plasma simulation -- Electrons
Аннотация: A new model of the electron pressure anisotropy in the electron diffusion region in collisionless magnetic reconnection is presented for the case of antiparallel configuration of magnetic fields. The plasma anisotropy is investigated as source of collisionless dissipation. By separating electrons in the vicinity of the neutral line into two broad classes of inflowing and accelerating populations, it is possible to derive a simple closure for the off-diagonal electron pressure component. The appearance of these two electron populations near the neutral line is responsible for the anisotropy and collisionless dissipation in the magnetic reconnection. Particle-in-cell simulations verify the proposed model, confirming first the presence of two particle populations and second the analytical results for the off-diagonal electron pressure component. Furthermore, test-particle calculations are performed to compare our approach with the model of electron pressure anisotropy in the inner electron diffusion region by Fujimoto and Sydora [Phys. Plasmas 16, 112309 (2009)]. (C) 2010 American Institute of Physics. [doi:10.1063/1.3521576]

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Держатели документа:
[Divin, A.
Markidis, S.
Lapenta, G.] Katholieke Univ Leuven, Ctr Plasma Astrofys, B-3001 Heverlee, Belgium
[Semenov, V. S.] St Petersburg State Univ, Dept Phys, St Petersburg 198504, Russia
[Erkaev, N. V.] Russian Acad Sci, Inst Computat Modelling, Krasnoyarsk 660036, Russia
[Erkaev, N. V.] Siberian Fed Univ, Krasnoyarsk 660041, Russia
[Biernat, H. K.] Austrian Acad Sci, Space Res Inst, A-8042 Graz, Austria
[Biernat, H. K.] Graz Univ, Inst Phys, A-8010 Graz, Austria
ИВМ СО РАН
Centrum voor Plasma-astrofysica, Katholieke Universiteit Leuven, B-3001 Heverlee, Belgium
Department of Physics, St. Petersburg State University, St. Petersburg 198504, Russian Federation
Institute for Computational Modelling, Russian Academy of Sciences, Krasnoyarsk 660036, Russian Federation
Siberian Federal University, Krasnoyarsk 660041, Russian Federation
Space Research Institute, Austrian Academy of Sciences, Graz A-8042, Austria
Institute of Physics, University of Graz, Graz A-8010, Austria

Доп.точки доступа:
Divin, A.; Markidis, S.; Lapenta, G.; Semenov, V. S.; Erkaev, N. V.; Еркаев, Николай Васильевич; Biernat, H. K.
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Prischepa, O. O.
Transformation of director configuration upon changing boundary conditions in droplets of nematic liquid crystal / O. O. Prischepa, A. V. Shabanov, V. Y. Zyryanov // JETP Letters. - 2004. - Vol. 79, Is. 6. - P. 257-261, DOI 10.1134/1.1759405. - Cited References: 12 . - ISSN 0021-3640

РУБ Physics, Multidisciplinary
Рубрики:
ISOTROPIC LIQUID
DROPS
Аннотация: The transformation of the director configuration upon changing boundary conditions from planar to homeotropic for bipolar nematic droplets dispersed in a polymeric matrix was studied. The characteristic textural patterns are presented for droplets with different concentrations of homeotropic surfactants, and their orientational structure is identified. The scenario predicted earlier by G.E. Volovik and O.D. Lavrentovich (ZhETF 85, 1997 (1983)) for the transformation of orientational structure of nematic droplets from bipolar to radial, without the formation of additional disclinations, is revealed. It is shown that, by using the computational method of minimization of the director elastic-strain energy in the droplet bulk and by introducing the inhomogeneous boundary conditions, one can obtain orientational structures that are analogous to the observed ones.(C) 2004 MAIK "Nauka / Interperiodica".

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Держатели документа:
Russian Acad Sci, LV Kirensky Phys Inst, Siberian Div, Krasnoyarsk 660036, Russia
ИФ СО РАН
Kirenskii Institute of Physics, Siberian Division, Russian Academy of Sciences, Krasnoyarsk, Akademgorodok, 660036, Russian Federation

Доп.точки доступа:
Shabanov, A. V.; Шабанов, Александр Васильевич; Zyryanov, V. Y.; Зырянов, Виктор Яковлевич; Prishchepa, O. O.
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Director configurations in nematic droplets with tilted surface anchoring / M. N. Krakhalev [et al.] // Liq. Cryst. - 2017. - Vol. 44, Is. 2. - P. 355-363, DOI 10.1080/02678292.2016.1205225. - Cited References:32. - This work was supported by Russian Foundation for Basic Research (RFBR) under Grants 15-02-06924 and 16-32-00164 and Siberian Branch of the Russian Academy of Sciences (SB RAS) under Complex Program [II.2P 0358-2015-0010], and V.S.S. acknowledges financial support from RFBR [16-32-60036]. . - ISSN 0267-8292. - ISSN 1366-5855

РУБ Chemistry, Multidisciplinary + Crystallography + Materials Science, Multidisciplinary
Рубрики:
DISPERSED LIQUID-CRYSTALS
   RIGIDLY FIXED POLES
   ELECTRIC-FIELD
   POLYMER
Кл.слова (ненормированные):
Polymer dispersed liquid crystal -- nematic droplet -- director -- configuration -- boundary conditions -- surface anchoring strength -- optical -- texture
Аннотация: The polymer dispersed nematic liquid crystal (LC) with the tilted surface anchoring has been studied. The droplet orientational structures with two point surface defects – boojums and the surface ring defect – are formed within the films. The director tilt angle α = 40° ± 4° at the droplet interface and LC surface anchoring strength Ws ~ 10–6 (J m−2) have been estimated. The bipolar axes within the studied droplets of oblate ellipsoidal form can be randomly oriented are oriented randomly relatively to the ellipsoid axes as opposed to the droplets with homeotropic and tangential anchoring.

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Держатели документа:
Russian Acad Sci, Siberian Branch, Krasnoyarsk Sci Ctr, Kirensky Inst Phys, Krasnoyarsk, Russia.
Siberian Fed Univ, Krasnoyarsk, Russia.

Доп.точки доступа:
Krakhalev, M. N.; Крахалев, Михаил Николаевич; Prishchepa, O. O.; Прищепа, Оксана Олеговна; Sutormin, V. S.; Сутормин, Виталий Сергеевич; Zyryanov, V. Ya.; Зырянов, Виктор Яковлевич; Russian Foundation for Basic Research (RFBR) [15-02-06924, 16-32-00164]; Siberian Branch of the Russian Academy of Sciences (SB RAS) [II.2P 0358-2015-0010]; RFBR [16-32-60036]
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Piezoelectric response in SmFe3(BO3)4, a non-piezoactive configuration. The surface piezoelectric effect / M. P. Kolodyazhnaya [et al.] // Low Temp. Phys. - 2017. - Vol. 43, Is. 8. - P. 924-929, DOI 10.1063/1.5001291. - Cited References:9 . - ISSN 1063-777X. - ISSN 1090-6517

РУБ Physics, Applied

Аннотация: An investigation of the mechanisms responsible for the manifestation of the piezoelectric effect in configurations that should not allow for piezoelectric response in the paramagnetic state due to their symmetry. In spite of these symmetry constraints the existence of such a piezoelectric response is detected in this study. It is assumed that these results are associated with the surface on which symmetry constraints are absent. In the magnetically ordered state an indirect piezoelectric effect is both symmetrically permissible and actually observable in these configurations, and it consists of the combined effects of magnetoelectric and magnetoelastic mechanisms.

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Публикация на русском языке Пьезоотклик в SmFe3(BO3)4 в непьезоактивной конфигурации. Поверхностный пьезоэффект [Текст] / М. П. Колодяжная [и др.] // Физ. низких температур : Физико-технический институт низких температур им. Б. И. Веркина НАН Украины, 2017. - Т. 43 Вып. 8. - С. 1151-1157

Держатели документа:
NAS Ukraine, B Verkin Inst Low Temp Phys & Engn, 47 Nauka Ave, UA-61103 Kharkov, Ukraine.
Russian Acad Sci, Kirensky Inst Phys, Siberian Branch, 50 Akademgorodok St, Krasnoyarsk 660036, Russia.

Доп.точки доступа:
Kolodyazhnaya, M. P.; Zvyagina, G. A.; Gudim, I. A.; Гудим, Ирина Анатольевна; Bilych, I. V.; Burma, N. G.; Zhekov, K. R.; Fil, V. D.
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10.

    Bipolar configuration with twisted loop defect in chiral nematic droplets under homeotropic surface anchoring / M. N. Krakhalev [et al.] // Sci. Rep. - 2017. - Vol. 7, Is. 1. - Ст. 14582, DOI 10.1038/s41598-017-15049-6. - Cited References: 45. - We are grateful to Dr. Timofeev Ivan Vladimirovich for valuable comments and discussions. This work was supported by the Russian Foundation for Basic Research (RFBR) under Grants Nos 15-02-06924, 16-53-00073, and Government of Krasnoyarsk Territory, Krasnoyarsk Region Science and Technology Support Fund to the research project No. 16-42-240704, and by the Siberian Branch of the Russian Academy of Sciences under Complex Program II.2P 0358-2015-0010. The work of V.Y.R. and À.V.Å. on the simulation of droplet structure and texture was supported by the Russian Science Foundation (project No. 16-43-03010). The work of J.H.L. was supported by the Ministry of Science and Technology of Taiwan (contract No. MOST105-2923-E-006-007). . - ISSN 2045-2322
   Перевод заглавия: Биполярная конфигурация с дефектом в виде закрученной петли в нематических каплях при гомеотропном поверхностном сцеплении
Аннотация: Optical textures and appropriate orientational structures have been studied within droplets of chiral nematic dispersed in polymer assigning the homeotropic anchoring. The helix axis of the chiral structure inside droplets forms the bipolar configuration. The optical droplet textures were analysed in the unpolarised light, analyser switching-off scheme and in crossed polarisers. The twisted loop defect reveals itself convincingly in all schemes. Its appearance at the optical patterns of the chiral nematic droplets has been examined depending on their size and the aspect direction. The existence of the defect has been verified by the structural and optical calculations. The effect of an electric field on both the defect line shape and the orientational structure of chiral nematic has been studied.

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Держатели документа:
Kirensky Institute of Physics, Federal Research Center - Krasnoyarsk Scientific Center, Siberian Branch of Russian Academy of Sciences, Krasnoyarsk, Russian Federation
Institute of Engineering Physics and Radio Electronics, Siberian Federal University, Krasnoyarsk, Russian Federation
Faculty of Physics, Lomonosov Moscow State University, Moscow, Russian Federation
Department of Chemical Engineering, National Cheng Kung University, Tainan, Taiwan

Доп.точки доступа:
Krakhalev, M. N.; Крахалев, Михаил Николаевич; Gardymova, A. P.; Prishchepa, O. O.; Прищепа, Оксана Олеговна; Rudyak, V. Yu.; Emelyanenko, A. V.; Liu, J. -H.; Zyryanov, V. Ya.; Зырянов, Виктор Яковлевич
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