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// 9th International Symposium "Advanced Display Technologies : basic studies of problems in information display" (FLOWERS 2000) : abstracts. - 2000. - P44-45 ; Proceedings of SPIE - The International Society for Optical Engineering. - 2001. - Vol. 4511

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Доп.точки доступа:
Zyryanov, V. Ya.; Зырянов, Виктор Яковлевич; Smorgon, S. L.; Shabanov, V. F.; Шабанов, Василий Филиппович; Pozhidaev, E. P.; Andreev, A. L.; Kompanets, I. N.; Maltese, P.; Haase, W.; "Advanced Display Technologies : basic studies of problems in information display", International Symposium(9 ; 2000 ; 10-12 Oct. ; Moscow, Russia)

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A device to control polarization and intensity of laser radiation / V. Ya. Zyryanov, S. L. Smorgon, V. V. Presnyakov, V. F. Shabanov // Proceedings of the Third Russian-Chinese symposium on laser physics and laser technology. - 1996. - P. 98-99

Доп.точки доступа:
Zyryanov, V. Ya.; Зырянов, Виктор Яковлевич; Smorgon, S. L.; Сморгон, Сергей Леонидович; Presnyakov, V. V.; Shabanov, V. F.; Шабанов, Василий Филиппович; Russian-Chinese symposium on laser physics and laser technology(3 ; 1996 ; Krasnoyarsk)
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Active beam steering by cholesteric layer with tangential-conical boundary conditions / R. G. Bikbaev, M. N. Krakhalev, O. O. Prishchepa [et al.] // Abstracts of 28th International Liquid Crystal Conference (ILCC 2022). - 2022. - Ст. PF.292. - Cited References: 2

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Bikbaev, R. G.; Бикбаев, Рашид Гельмединович; Krakhalev, M. N.; Крахалев, Михаил Николаевич; Prishchepa, O. O.; Прищепа, Оксана Олеговна; Sutormin, V. S.; Сутормин, Виталий Сергеевич; Timofeev, I. V.; Тимофеев, Иван Владимирович; Zyryanov, V. Ya.; Зырянов, Виктор Яковлевич; International Liquid Crystal Conference(28 ; 2022 ; July ; 24-29 ; Lisbon, Portugal)
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Aligning effect of magnetic field on PDLC films during the phase separation [Text] / A. M. Parshin [et al.] // Proceedings of SPIE - The International Society for Optical EngineeringXV INTERNATIONAL SYMPOSIUM ON ADVANCED DISPLAY TECHNOLOGIES / 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. 66370B, DOI 10.1117/12.742662 . - ISBN 0819467847

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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; Parshin, A. M.; Паршин, Александр Михайлович; Zyryanov, V. Ya.; Зырянов, Виктор Яковлевич; Shabanov, V. F.; Шабанов, Василий Филиппович; Nazarov, V. G.; Lapanik, V. I.; Bezborodov, V. S.; XV International Symposium on Advanced Display Technologies(2006 ; 03.10 - 05.10 ; Moscow)
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Parshin, A. M.
Alignment of liquid crystals by polymers with residual amounts of solvents / A. M. Parshin, V. Y. Zyryanov, V. F. Shabanov // Sci. Rep. - 2017. - Vol. 7. - Ст. 3042, DOI 10.1038/s41598-017-03243-5. - Cited References:21. - This work was supported by the Russian Foundation for Basic Research (project No. 15-02-06924 and No. 16-53-00073). . - ISSN 2045-2322

РУБ Multidisciplinary Sciences
Рубрики:
DISCLINATIONS
INTERFACE
DEFECTS
Аннотация: The homogeneous nematic layers in liquid crystal cells with treated surfaces are affected by orientational transitions in the electric, magnetic, or temperature fields. The liquid crystal structures formed on solid or liquid surfaces find limited application in identifying the liquid-crystal states by the textures observed in polarized light. The use of surfaces prepared from polymer solutions makes it possible to significantly broaden the range of application of the liquid crystal structures. We investigate the structures with the continuous transformation of the nematic director orientation from radial to planar, which were formed by the polycarbonate surface in the presence of different residual solvents. The structures contained the disclination lines that aligned either by a plate rubbed to provide the homogeneous planar orientation in the LC layer or by a magnetic field applied along the polycarbonate film during the structure formation. The orientational transitions caused by surface treatment, temperature, and electric or magnetic fields in these structures are observed. The comparison of temperature critical distance as well as electric and magnetic coherence lengths with equilibrium length calculated from the expression for the free energy of the nematic is performed. The electro-optical characteristics of the nematic structures are obtained.

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Держатели документа:
Fed Res Ctr KSC SB RAS, Kirensky Inst Phys, Krasnoyarsk, Russia.
Siberian Fed Univ, Krasnoyarsk 660041, Russia.

Доп.точки доступа:
Zyryanov, V. Ya.; Зырянов, Виктор Яковлевич; Shabanov, V. F.; Шабанов, Василий Филиппович; Паршин, Александр Михайлович; Russian Foundation for Basic Research [15-02-06924, 16-53-00073]
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Angle-resolved reflection spectroscopy of high-quality PMMA opal crystal / I. V. Nemtsev [et al.] // Photonics Nanostruc. Fundam. Appl. - 2018. - Vol. 28. - P. 37-44, DOI 10.1016/j.photonics.2017.11.007. - Cited References: 72. - This study was supported by the Russian Foundation for Basic Research (Grant No. 16-32-00302 мол_а ), by the Council for Grants of the President of the Russian Federation ( SP-317.2015.1 ), by Russian Foundation for Basic Research, Government of Krasnoyarsk Territory, Krasnoyarsk Region Science and Technology Support Fund to the research project No. 16-42-243059 р_мол_а and No. 16-48-242092 р_офи_м, and by the Program of Foundation for Promotion of Small Enterprises in Science and Technology (No.6662ГУ2015) (“УМНИК” program). We acknowledge the support of Krasnoyarsk Regional Center for Collective Use of SB of RAS for equipment and technique. We thank A. V. Shabanov and O. V. Shabanova for assistance in dispersion preparation. We also thank V. G. Myagkov for useful discussion of the results. . - ISSN 1569-4410
Кл.слова (ненормированные):
PMMA opal -- Photonic crystal -- Electron microscopy -- Angular resolved reflective spectroscopy
Аннотация: PMMA opal crystal was prepared by a simple hybrid method, which includes sedimentation, meniscus formation and evaporation. We investigated three surfaces of this crystal by angle-resolved reflective light spectroscopy and SEM study. The angle-resolved reflective measurements were carried out in the 400–1100 nm range. We have determined the high-quality ordered surface of the crystal region. Narrow particle size distribution of the surface has been revealed. The average particle diameter obtained with SEM was nearly 361 nm. The most interesting result was that reflectivity of the surface turned out up to 98% at normal light incidence. Using a fit of dependences of the maximum reflectivity wavelength from an angle based on the Bragg–Snell law, the wavelength of maximum 0° reflectivity, the particle diameter and the fill factor have been determined. For the best surface maximum reflectivity wavelength of a 0° angle was estimated to be 869 nm. The particle diameter and fill factor were calculated as 372 nm and 0.8715, respectively. The diameter obtained by fitting is in excellent agreement with the particle diameter obtained with SEM. The reflectivity maximum is assumed to increase significantly when increasing the fill factor. We believe that using our simple approach to manufacture PMMA opal crystals will significantly increase the fabrication of high-quality photonic crystal templates and thin films

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Держатели документа:
Federal Research Centre Krasnoyarsk Scientific Center of the Siberian Branch of Russian Academy of Sciences, Akademgorodok 50, Krasnoyarsk, Russian Federation
Kirensky Institute of Physics, Federal Research Centre Krasnoyarsk Scientific Center of the Siberian Branch of Russian Academy of Sciences, Akademgorodok 50, Krasnoyarsk, Russian Federation

Доп.точки доступа:
Nemtsev, I. V.; Немцев, Иван Васильевич; Tambasov, I. A.; Тамбасов, Игорь Анатольевич; Ivanenko, A. A.; Иваненко, Александр Анатольевич; Zyryanov, V. Ya.; Зырянов, Виктор Яковлевич
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    Angular tuning of defect modes spectrum in the one-dimensional photonic crystal with liquid-crystal layer / V. G. Arkhipkin [et al.] // Eur. Phys. J. E. - 2007. - Vol. 24, Is. 3. - P297-302, DOI 10.1140/epje/i2007-10239-7. - Cited Reference Count: 28 . - NOV. - ISSN 1292-8941
Рубрики:
PERIODIC STRUCTURE
   REFRACTIVE-INDEX
   ENHANCEMENT
   LIGHT
   LASER
Кл.слова (ненормированные):
42.25.Bs Wave propagation, transmission and absorption -- 42.70.Df Liquid crystals -- 42.70.Qs Photonic bandgap materials -- Angles of incidence -- Angular tuning -- Defect modes -- Electric polarization -- Photonic bandgap materials -- Radiation losses -- Absorption -- Defects -- Light polarization -- Liquid crystals -- One dimensional -- Phase shift -- Wave propagation -- Photonic crystals
Аннотация: A one-dimensional ZrO2/SiO2 photonic crystal with a 4-n -pentyl-4'-cyanobiphenyl (5CB) nematic defect layer was used to investigate the transmission spectra of light polarized parallel and perpendicular to the liquid-crystal director at different angles of incidence. The spectra of the photonic crystal were shown to split into four polarized components T-ij at oblique incidence. When the incident angle increased, the bandgap edges and the defect modes shifted towards short wavelengths, while the amplitudes of the defect modes increased for the transverse magnetic polarization and decreased for the transverse electric polarization. The observed discrepancy between the defect mode amplitudes in the center and near the edges of the photonic bandgap was found to be related to the radiation losses inside the defect layer of a non-ideal photonic crystal. The simulated transmission spectra obtained using recurrence relations and taking into account the decay of defect modes are in good agreement with the experimental data.

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Держатели документа:
SB RAS, LV Kirensky Phys Inst, Krasnoyarsk Sci Ctr, Krasnoyarsk 660036, Russia
Siberian Fed Univ, Krasnoyarsk 660041, Russia

Доп.точки доступа:
Arkhipkin, V. G.; Архипкин, Василий Григорьевич; Gunyakov, V. A.; Гуняков, Владимир Алексеевич; Myslivets, S. A.; Мысливец, Сергей Александрович; Zyryanov, V. Ya.; Зырянов, Виктор Яковлевич; Shabanov, V. F.; Шабанов, Василий Филиппович
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    Anionic-cationic surfactant mixture providing the electrically controlled homeotropic surface anchoring of liquid crystals / M. N. Krakhalev [et al.] // J. Mol. Liq. - 2019. - Vol. 282: Suzdal Conference (2018, Suzdal, RUSSIA). - P. 57-62, DOI 10.1016/j.molliq.2019.02.132. - Cited References: 30. - The reported study was supported by the Belarusian Republican Foundation for Fundamental Research (project No X16P-110) and Russian Foundation for Basic Research (RFBR) (project No 16-53-00073). Mikhail N. Krakhalev and Vitaly S. Sutormin acknowledge financial support from RFBR, Government of Krasnoyarsk Territory, Krasnoyarsk Regional Fund of Science (project No 18-42-243006). . - ISSN 0167-7322. - ISSN 1873-3166
   Перевод заглавия: Смесь анионного и катионного сурфактантов, обеспечивающая электроуправляемое гомеотропное поверхностное сцепление в жидких кристаллах

РУБ Chemistry, Physical + Physics, Atomic, Molecular & Chemical
Рубрики:
IONIC MODIFICATION
   TRANSITION
   DROPLETS
   CONFIGURATION
   LAYER
Кл.слова (ненормированные):
Polymer dispersed liquid crystal -- Nematic droplet -- Ionic surfactant -- Anchoring transition -- Director configuration -- Optical texture
Аннотация: In search of a substance able to function as an anionic surfactant applied for the electrically-induced anchoring transitions in liquid crystals, the compound 4-heptyloxybenzoate benzyl dodecyldimethylammonium (HOBBDDA) has been synthesized. Its orienting influence on nematic liquid crystal 4-pentyl-4'-cyanobiphenyl (5CB) has been tested. HOBBDDA dissolved up to 1.4%in 50 droplets dispersed in polymer film does not change the tangential surface anchoring inherent to polyvinyl alcohol matrix used. Homeotropic surface anchoring is realized if the HOBBDDA content exceeds 1.7%. The molecules of the surfactant in 5CB dissociate into anions and cations. The anions modify the surface anchoring under the action of DC electric field both in the normal and inverse mode. The mixture of HOBBDDA and cetyltrimethylammonium bromide can function as a binary ionic cationic surfactant which significantly expands the prospects for using the ionic-surfactant method to control liquid crystal materials. (C) 2019 Elsevier B.V. All rights reserved.

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Держатели документа:
Fed Res Ctr KSC SB RAS, Kirensky Inst Phys, Krasnoyarsk 660036, Russia.
Siberian Fed Univ, Inst Engn Phys & Radio Elect, Krasnoyarsk 660041, Russia.
Belarusian State Technol Univ, Minsk 220006, BELARUS.

Доп.точки доступа:
Krakhalev, M. N.; Крахалев, Михаил Николаевич; Sutormin, V. S.; Сутормин, Виталий Сергеевич; Prishchepa, O. O.; Прищепа, Оксана Олеговна; Kuz'menok, N. M.; Mikhalyonok, S. G.; Bezborodov, V. S.; Zyryanov, V. Ya.; Зырянов, Виктор Яковлевич; Belarusian Republican Foundation for Fundamental Research [X16P-110]; Russian Foundation for Basic Research (RFBR) [16-53-00073]; RFBR, Government of Krasnoyarsk Territory, Krasnoyarsk Regional Fund of Science [18-42-243006]; International conference on Hole Burning, Single Molecule, and Related Spectroscopies: Science and Applications - 2018(XIII ; August 6-12, 2018 ; Suzdal - Moscow, Russia)
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    Anomalous spectral shift of o-modes in multilayer photonic structure induced by homeotropic–homeoplanar transition in chiral–nematic defect layer / V. A. Gunyakov, V. S. Sutormin, I. V. Timofeev [et al.] // Photonics. - 2023. - Vol. 10, Is. 9. - Ст. 959, DOI 10.3390/photonics10090959. - Cited References: 39 . - ISSN 2304-6732
   Перевод заглавия: Аномальный спектральный сдвиг о-мод в мультислойной фотонной структуре индуцированный переходом от гомеотропной к гомеопланарной конфигурации в хиральном нематическом дефектном слое
Кл.слова (ненормированные):
liquid crystal -- hybrid aligned cholesteric -- ionic surfactant -- multilayer photonic structure -- geometric phase
Аннотация: A chiral nematic is embedded between multilayer mirrors to obtain voltage-inducible polarized resonance spectra. Initially, the nematic director is uniformly oriented perpendicular to the mirrors’ surfaces because the chiral nematic helix is completely untwisted due to the homeotropic boundary conditions specified by the adsorbed cations. Then, a voltage is applied to remove the layer of surface-active cations from the input mirror. The obtained twisted homeoplanar configuration has a helix pitch exceeding the layer’s thickness. The twisting leads to the anomalous blue shift of the o-modes in the transmittance spectrum of the photonic structure. This blue shift can be effectively compensated by repulsion of spectral peaks as a result of mode coupling in the vicinity of the virtual avoided crossing point. The experimental results obtained are confirmed numerically using the 4 ˣ 4 transfer matrix method and explained with the contribution of a geometric phase.

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Держатели документа:
Kirensky Institute of Physics, Federal Research Center KSC SB RAS, Krasnoyarsk, 660036, Russian Federation
Institute of Engineering Physics and Radio Electronics, Siberian Federal University, Krasnoyarsk, 660041, Russian Federation

Доп.точки доступа:
Gunyakov, V. A.; Гуняков, Владимир Алексеевич; Sutormin, V. S.; Сутормин, Виталий Сергеевич; Timofeev, I. V.; Тимофеев, Иван Владимирович; Shabanov, V. F.; Шабанов, Василий Филиппович; Zyryanov, V. Ya.; Зырянов, Виктор Яковлевич
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10.

Bipolar configuration with a twisted defect loop in chiral nematic droplets / M. N. Krakhalev [et al.] // 14th Eur. Conf. Liq. Cryst. (ECLC) : conf. programme / чл. нац. орг. и прогр. ком. V. Ya. Zyryanov. - 2017. - Ст. P133. - Библиогр.: 3 . - Poster

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Zyryanov, V. Ya. \чл. нац. орг. и прогр. ком.\; Зырянов, Виктор Яковлевич; Krakhalev, M. N.; Крахалев, Михаил Николаевич; Prishchepa, O. O.; Прищепа, Оксана Олеговна; Gardymova, A. P.; Zyryanov, V. Ya.; European Conference on Liquid Crystals(14 ; 2017 ; June ; 25-30 ; Moscow); Московский государственный университет им. М.В. Ломоносова
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