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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Lukinykh V. F., Myslivets S. A., Popov A. K., Slabko V. V.
Заглавие : Nonlinear optical frequency-mixing in DYE vapors
Разночтения заглавия :авие SCOPUS: Nonlinear optical frequency-mixing in dye vapors
Место публикации : APPLIED PHYSICS B-PHOTOPHYSICS AND LASER CHEMISTRY: SPRINGER VERLAG, 1985. - Vol. 38, Is. 2. - P143-146. - ISSN 0721-7269, DOI 10.1007/BF00697454
Примечания : Cited References: 18
Ключевые слова (''Своб.индексиров.''): 42.65--42.80--dyes and dyeing--lasers, solid state - applications--dye vapors--nonlinear optical frequency-mixing--light
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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : EVERYANOV E. M., GUNYAKOV V. A.
Заглавие : REARRANGEMENT AND MODULATION OF SPECTRAL POSITION OF DYE ABSORPTION-BAND IN ORIENTING MATRIX
Место публикации : Pisma Zhurnal Tek. Fiz.: MEZHDUNARODNAYA KNIGA, 1990. - Vol. 16, Is. 18. - P46-50. - ISSN 0320-0116
Примечания : Cited References: 4
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Вид документа : Однотомное издание (Препринт)
Шифр издания :
Автор(ы) : Karpov S. V., Myslivets S. A., Popov A. K., Slabko V. V.
Заглавие : Nonlinear optical properties of organic dye vapors : preprint. № 701Ф
Выходные данные : Красноярск: ИФ СО АН СССР, 1991
Колич.характеристики :41 с
Коллективы : Академия наук СССР, Сибирское отделение АН СССР, Институт физики им. Л.В. Киренского Сибирского отделения АН СССР
Примечания : Cited References :
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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Averyanov E. M., Gunyakov V. A.
Заглавие : Spectral position control of dye absorption band maximum in an orienting matrix
Место публикации : Molecular Engineering. - 1992. - Vol. 1, N. 4. - P.311-316
Аннотация: The continuous control of the maximum position να of the dye absorption band (the zero of the derivative dD α(ν)/dν of the cell's optical density D α(ν)) in a nematic matrix is demonstrated experimentally, as a result of changing the angle α between the optical axis of a planar-oriented sample and the plane of polarization of absorbed light incident normal to the optical axis. The theory proposed describes quantitatively the experimental dependence ν(α). The rotation of the polarizer with given frequency ω results in the spectral position modulation of the solute band maximum ν(ω) within ν(α=0°)−ν(90°)=700 cm−1.
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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Shvetsov S. A., Emelyanenko, Alexander, V, Bugakov M. A., Boiko N. I., Zyryanov V. Ya.
Заглавие : Photo-orientation of nematic liquid crystal without preliminary cell surface treatment
Коллективы : Russian Science Foundation (RSF) [18-72-00242]
Место публикации : Opt. Mater. Express. - 2019. - Vol. 9, Is. 6. - P.2595-2600. - ISSN 2159-3930, DOI 10.1364/OME.9.002595
Примечания : Cited References: 28. - Russian Science Foundation (RSF) (18-72-00242).
Предметные рубрики: HOMEOTROPIC ALIGNMENT
INTERFACE
DYE
PHOTOALIGNMENT
NONLINEARITY
Аннотация: We propose a simple and effective method of liquid crystal photoalignment that does not require any preliminary treatment of the cell substrates. To this aim, a small amount (0.1 wt %) of azobenzene carboxylic acid is added into the nematic liquid crystal. After filling the liquid crystal cell, a part of the dopant molecules is spontaneously adsorbed and attached to the glass surface by hydrogen bonds. This allows one to switch the boundary conditions of liquid crystal between homeotropic and planar due to the reversible trans-cis photoizomerization. (C) 2019 Optical Society of America under the terms of the OSA Open Access Publishing Agreement
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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Avdeeva A. Yu., Vetrov S. Ya., Bikbaev R. G., Pyatnov M. V., Rudakova N. V., Timofeev I. V.
Заглавие : Chiral optical Tamm states at the interface between a Dye-doped cholesteric liquid crystal and an anisotropic mirror
Коллективы : Russian Foundation for Basic Research, Government of Krasnoyarsk Territory, Krasnoyarsk Region Science and Technology Support Fund [19-42-240004]; Russian Foundation for Basic ResearchRussian Foundation for Basic Research (RFBR) [19-52-52006]
Место публикации : Materials. - 2020. - Vol. 13, Is. 15. - Ст.3255. - ISSN 1996-1944(eISSN), DOI 10.3390/ma13153255
Примечания : Cited References: 44. - The reported study was funded by Russian Foundation for Basic Research, Government of Krasnoyarsk Territory, Krasnoyarsk Region Science and Technology Support Fund to the research project No. 19-42-240004 and by Russian Foundation for Basic Research, project No. 19-52-52006
Предметные рубрики: PHASE
POLARIZATION
MODES
Аннотация: The resonant splitting of optical Tamm state numerically is demonstrated. The Tamm state is localized at the interface between a resonant chiral medium and a polarization-preserving anisotropic mirror. The chiral medium is considered as a cholesteric liquid crystal doped with resonant dye molecules. The article shows that the splitting occurs when dye resonance frequency coincides with the frequency of the Tamm state. In this case the reflectance, transmittance, and absorptance spectra show two distinct Tamm modes. For both modes, the field localization is at the interface between the media. The external field control of configurable optical and structural parameters paves the way for use in tunable chiral microlaser.
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Вид документа : Статья из сборника (однотомник)
Шифр издания :
Автор(ы) : Авдеева, Анастасия Юрьевна, Ветров, Степан Яковлевич, Пятнов, Максим Владимирович, Рудакова, Наталья Викторовна, Тимофеев, Иван Владимирович
Заглавие : Хиральные оптические таммовские состояния на границе анизотропного зеркала и холестерика с красителем
Коллективы : Международная конференция по фотонике и информационной оптике, Российская академия наук, Национальный исследовательский ядерный университет "МИФИ", Государственная корпорация по атомной энергии "РОСАТОМ"
Место публикации : Международная конференция по фотонике и информационной оптике (9 ; 2020 ; янв. ; 29-31 ; Москва). IX Международная конференция по фотонике и информационной оптике: сборник научных трудов. - 2020. - С. 91-92. - ISBN 978-5-7262-2648-4
Примечания : Библиогр.: 3. - Исследование выполнено при финансовой поддержке РФФИ, Правительства Красноярского края и ККФН в рамках научного проекта № 19 24 240004
Аннотация: Изучен эффект расщепления хирального оптического таммовского состояния ( локализованного на границе сохраняющего поляризацию анизотропного зеркала (СПАЗ) и холестерического жидкого кристалла (ХЖК) с красителем. Показаны условия возникновения высокодобротных резонансов, проявляемых в спектре отражения в виде провалов, которые м огут быть использованы при создании узкополосных фильтров.
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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Lin C. -R., Ivanova O. S., Petrov D. A., Sokolov A. Е., Chen Y. -Z., Gerasimova M. A., Zharkov S. M., Tseng Y. -T., Shestakov N. P., Edelman I. S.
Заглавие : Amino-functionalized Fe3O4@SiO2 core-shell magnetic nanoparticles for dye adsorption
Место публикации : Nanomaterials. - 2021. - Vol. 11, Is. 9. - Ст.2371. - ISSN 20794991 (ISSN), DOI 10.3390/nano11092371
Примечания : Cited References: 35. - The authors are thankful for the financial support the Russian Foundation for Basic Research, Grant № 19-52-52002, Ministry of Science and Technology of Taiwan, Grants MOST № 108-2923-M-153-001-MY3 and № 109-2112-M-153-003-, the Russian Foundation for Basic Research with Government of Krasnoyarsk Territory, Krasnoyarsk Regional Fund of Science, the research project number 19-42-240005: “Features of the electronic structure, magnetic properties and optical excitations in nanocrystals of the multifunctional magnetic chalcogenides Fe3S4 and FeSe”. We thank also the SFU Joint Scientific Center supported by the State assignment (#FSRZ-2020-0011) of the Ministry of Science and Higher Education of the Russian Federation, where the Transmission Electron Microscopy studies were carried out
Аннотация: Fe3O4@SiO2 core-shell nanoparticles (NPs) were synthesized with the co-precipitation method and functionalized with NH2 amino-groups. The nanoparticles were characterized by X-ray, FT-IR spectroscopy, transmission electron microscopy, selected area electron diffraction, and vibrating sample magnetometry. The magnetic core of all the nanoparticles was shown to be nanocrystalline with the crystal parameters corresponding only to the Fe3O4 phase covered with a homogeneous amorphous silica (SiO2) shell of about 6 nm in thickness. The FT-IR spectra confirmed the appearance of chemical bonds at amino functionalization. The magnetic measurements revealed unusually high saturation magnetization of the initial Fe3O4 nanoparticles, which was presumably associated with the deviations in the Fe ion distribution between the tetrahedral and octahedral positions in the nanocrystals as compared to the bulk stoichiometric magnetite. The fluorescent spectrum of eosin Y-doped NPs dispersed in water solution was obtained and a red shift and line broadening (in comparison with the dye molecules being free in water) were revealed and explained. Most attention was paid to the adsorption properties of the nanoparticles with respect to three dyes: methylene blue, Congo red, and eosin Y. The kinetic data showed that the adsorption processes were associated with the pseudo-second order mechanism for all three dyes. The equilibrium data were more compatible with the Langmuir isotherm and the maximum adsorption capacity was reached for Congo red.
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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Gardymova A. P., Krakhalev M. N., Zyryanov V. Ya., Gruzdenko A. A., Alekseev A. A., Rudyak V. Yu.
Заглавие : Polymer dispersed cholesteric liquid crystals with a toroidal director configuration under an electric field
Место публикации : Polymers. - 2021. - Vol. 13, Is. 5. - Ст.732. - P.1-11. - ISSN 20734360 (ISSN), DOI 10.3390/polym13050732
Примечания : Cited References: 49. - This research was funded by Russian Science Foundation, Grant No. 20-72-10038
Аннотация: The electro-optical properties of polymer dispersed liquid crystal (PDLC) films are highly dependent on the features of the contained liquid crystal (LC) droplets. Cholesteric LC droplets with homeotropic boundaries can form several topologically different orientational structures, including ones with single and more point defects, layer-like, and axisymmetric twisted toroidal structures. These structures are very sensitive to an applied electric field. In this work, we have demonstrated experimentally and by computer simulations that twisted toroidal droplets reveal strong structural response to the electric field. In turn, this leads to vivid changes in the optical texture in crossed polarizers. The response of droplets of different sizes were found to be equivalent in terms of dimensionless parameters. In addition, the explanation of this phenomenon showed a comparison of theoretical and experimental structural response curves aids to determine the shape of the droplet. Finally, we demonstrated that the addition of a dichroic dye allows such films to be used as optical filters with adjustable color even without polarizers.
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10.

Вид документа : Однотомное издание
Шифр издания :
Заглавие : Soft photonic crystals and metamaterials
Выходные данные : Bazel; Beijing; Wuhan: MDPI, 2022
Колич.характеристики :VII с ; 127 с
ISBN, Цена 978-3-0365-6074-8
ISBN, Цена 978-3-0365-6073-1
Идентификационный №: DOI 10.3390/ma15228096
Содержание : Special issue: Soft photonic crystals and metamaterials/ I. V. Timofeev, W. Lee. Double-resolved beam steering by metagrating-based Tamm plasmon polariton/ R. G. Bikbaev, D. N. Maksimov, K. - P. Chen, I. V. Timofeev. Chiral optical Tamm states at the interface between a Dye-doped cholesteric liquid crystal and an anisotropic mirror/ A. Yu. Avdeeva, S. Ya. Vetrov, R. G. Bikbaev [et al.]. Chiral-selective Tamm plasmon polaritons/ M. -Y. Lin, W. -H. Xu, R. G. Bikbaev [et al.].
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11.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Lin, Chun-Rong, Ivanova O. S., Edelman I. S., Knyazev Yu. V., Zharkov S. M., Petrov D. A., Sokolov A. Е., Svetlitsky E. S., Velikanov D. A., Solovyov, Leonid A., Chen, Ying-Zhen, Tseng, Yaw-Teng
Заглавие : Carbon double coated Fe3O4@C@C nanoparticles: Morphology features, magnetic properties, dye adsorption
Коллективы : Russian Foundation for Basic ResearchRussian Foundation for Basic Research (RFBR) [19-52-52002]; Ministry of Science and Technology of TaiwanMinistry of Science and Technology, Taiwan [108-2923-M-153-001-MY3, 109-2112-M-153-003]; Joint Scientific Center of the Siberian Federal University [FSRZ-2020-0011]; Ministry of Science and Higher Education of the Russian Federation
Место публикации : Nanomaterials. - 2022. - Vol. 12, Is. 3. - Ст.376. - ISSN 2079-4991(eISSN), DOI 10.3390/nano12030376
Примечания : Cited References: 44. - The work was supported financially by the Russian Foundation for Basic Research, Grant No. 19-52-52002 and Ministry of Science and Technology of Taiwan, Grants MOST No. 108-2923-M-153-001-MY3 and No. 109-2112-M-153-003-. The support was obtained also from the Joint Scientific Center of the Siberian Federal University supported by the State assignment (#FSRZ-2020-0011) of the Ministry of Science and Higher Education of the Russian Federation, where the Transmission Electron Microscopy studies were carried out
Предметные рубрики: SOLID-PHASE EXTRACTION
FE3O4 NANOPARTICLES
PROFILE REFINEMENT
Аннотация: This work is devoted to the study of magnetic Fe3O4 nanoparticles doubly coated with carbon. First, Fe3O4@C nanoparticles were synthesized by thermal decomposition. Then these synthesized nanoparticles, 20–30 nm in size were processed in a solution of glucose at 200 °C during 12 h, which led to an unexpected phenomenon – the nanoparticles self-assembled into large conglomerates of a regular shape of about 300 nm in size. The morphology and features of the magnetic properties of the obtained hybrid nanoparticles were characterized by transmission electron microscopy, differential thermo-gravimetric analysis, vibrating sample magnetometer, magnetic circular dichroism and Mössbauer spectroscopy. It was shown that the magnetic core of Fe3O4@C nanoparticles was nano-crystalline, corresponding to the Fe3O4 phase. The Fe3O4@C@C nanoparticles presumably contain Fe3O4 phase (80%) with admixture of maghemite (20%), the thickness of the carbon shell in the first case was of about 2–4 nm. The formation of very large nanoparticle conglomerates with a linear size up to 300 nm and of the same regular shape is a remarkable peculiarity of the Fe3O4@C@C nanoparticles. Adsorption of organic dyes from water by the studied nanoparticles was also studied. The best candidates for the removal of dyes were Fe3O4@C@C nanoparticles. The kinetic data showed that the adsorption processes were associated with the pseudo-second order mechanism for cationic dye methylene blue (MB) and anionic dye Congo red (CR). The equilibrium data were more consistent with the Langmuir isotherm and were perfectly described by the Langmuir–Freundlich model.
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12.

Вид документа : Статья из сборника (выпуск продолж. издания)
Шифр издания :
Автор(ы) : Slyusarenko N. V., Krylov A. S., Timofeeva M. V., Shipilovskikh S. A., Slyusareva E. A.
Заглавие : Luminescent studies of flexible [DUT-8 (Zn)] metal-organic frameworks
Колич.характеристики :6 с
Коллективы : International Conference on Pulsed Lasers and Laser Applications
Место публикации : Proc. SPIE. - 2023. - Vol. 12920: XVI International Conference on Pulsed Lasers and Laser Applications (10-15 September 2023, Tomsk, Russian Federation). - Ст.1292014. - , DOI 10.1117/12.3005774
Примечания : Cited References: 10. - The reported study was funded by RFBR and DFG, project 21-52-12018
Аннотация: An approach to the study of the porous structure of metal-organic frameworks (MOF) using guest luminescent molecules with specially selected spectral characteristics as acceptors of electronic excitation energy was suggested. If such molecules are adsorbed in MOF pores with sizes comparable to the Förster radius, Förster resonance energy transfer (FRET) from photoexcited linkers occurs. In this case quenching of luminescence of the linker can serve as analytical signals indicating open pore structure of the MOF. The developed approach was demonstrated by the example of DUT-8(Zn) MOF and Coumarin 1 as guest molecules by time-resolved luminescence methods.
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13.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Ivanova O. S., Edelman I. S., Lin, Chun-Rong, Svetlitsky E. S., Sokolov A. Е., Lukyanenko, Kirill A., Sukhachev A. L., Shestakov N. P., Chen, Ying-Zhen, Spivakov, Aleksandr A.
Заглавие : Core–shell Fe3O4@C nanoparticles for the organic dye adsorption and targeted magneto-mechanical destruction of Ehrlich ascites carcinoma cells
Место публикации : Materials. - 2023. - Vol. 16, Is. 1. - Ст.23. - ISSN 19961944 (eISSN), DOI 10.3390/ma16010023
Примечания : Cited References: 65. - This research was funded partly by the Ministry of Science and Higher Education of the Russian Federation, project FWES-2021-0035. C.-R.L., Y.-Z.C. and A.A.S. thank the National Science and Technology Council of Taiwan for the financial support, Grants NSTC № 108-2923-M-153-001-MY3 and № 110-2112-M-153-005-. Magnetic investigations were carried out in the Center for Collective Use of the Krasnoyarsk Regional Center of Research Equipment of Federal Research Center “Krasnoyarsk Science Center SB RAS”
Аннотация: The morphology, structure, and magnetic properties of Fe3O4 and Fe3O4@C nanoparticles, as well their effectiveness for organic dye adsorption and targeted destruction of carcinoma cells, were studied. The nanoparticles exhibited a high magnetic saturation value (79.4 and 63.8 emu/g, correspondingly) to facilitate magnetic separation. It has been shown that surface properties play a key role in the adsorption process. Both types of organic dyes—cationic (Rhodomine C) and anionic (Congo Red and Eosine)—were well adsorbed by the Fe3O4 nanoparticles’ surface, and the adsorption process was described by the polymolecular adsorption model with a maximum adsorption capacity of 58, 22, and 14 mg/g for Congo Red, Eosine, and Rhodomine C, correspondingly. In this case, the kinetic data were described well by the pseudo-first-order model. Carbon-coated particles selectively adsorbed only cationic dyes, and the adsorption process for Methylene Blue was described by the Freundlich model, with a maximum adsorption capacity of 14 mg/g. For the case of Rhodomine C, the adsorption isotherm has a polymolecular character with a maximum adsorption capacity of 34 mg/g. To realize the targeted destruction of the carcinoma cells, the Fe3O4@C nanoparticles were functionalized with aptamers, and an experiment on the Ehrlich ascetic carcinoma cells’ destruction was carried out successively using a low-frequency alternating magnetic field. The number of cells destroyed as a result of their interaction with Fe3O4@C nanoparticles in an alternating magnetic field was 27%, compared with the number of naturally dead control cells of 6%.
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14.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Chang Y.-C., Yang S.-H., Zyryanov V. Ya., Lee W.
Заглавие : Electrically tunable thermoresponsive optic switch for smart window application based on dye-doped cholesteric liquid crystal
Колич.характеристики :9 с
Место публикации : J. Mol. Liq. - 2023. - Vol. 388. - Ст.122752. - ISSN 01677322 (ISSN), DOI 10.1016/j.molliq.2023.122752. - ISSN 18733166 (eISSN)
Примечания : Cited References: 24. - This work was financially supported by National Science and Technology Council, Taiwan (NSTC), under Grant Nos. 110-2112-M-A49-023 and 111-2112-M-A49-033
Аннотация: We demonstrate a cholesteric liquid crystal (CLC) smart window that functions as a reversible thermo-optic switch between a transparent state at a low temperature and a low-transmission state at a higher temperature. This smart window is based on the addition of a thermoresponsive handedness-reversible chiral dopant in a mixture of a typical chiral dopant, a dichroic dye and nematic liquid crystal, yielding a thermosensitized CLC. In such a homeotropically anchored dye-doped CLC, the thickness-to-pitch ratio increases as the temperature rises, causing the device to switch from the homeotropic texture to the fingerprint texture. The absorption characteristic of the dichroic dye enables the homeotropic and fingerprint configurations in the dye-doped CLC to create two distinct transmission levels—the transparent and opaque optically stable states, respectively. Such a switching mechanism entails no additional electric power and, thus, is energy-saving. Moreover, the switching temperature at which the texture transition takes place can be actively increased by increasing voltage for the smart window. This allows the CLC device to be perfectly adaptable to the need of a user and, in turn, applicable to a wider variety of environments.
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