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    Zobov, V. E.
    Associative memory on qutrits by means of quantum annealing / V. Zobov, I. Pichkovskiy // Quantum Inf. Process. - 2020. - Vol. 19, Is. 9. - Ст. 342, DOI 10.1007/s11128-020-02851-x. - Cited References: 23 . - ISSN 1570-0755. - ISSN 1573-1332
   Перевод заглавия: Ассоциативная память на кутритах посредством квантового отжига
Кл.слова (ненормированные):
Quantum adiabatic algorithm -- Quantum annealing -- Qubit -- Qutrit -- Associative memory -- Memory capacity
Аннотация: When associative memory is implemented on the well-studied Hopfield network, patterns are recorded in the interaction constants between binary neurons. These constants are chosen so that each pattern should have its own minimum energy of the system described by the Ising model. In the quantum version of the Hopfield network, it was proposed to recall such states by the adiabatic change of the Hamiltonian in time. Qubits, quantum elements with two states, for example, spins with S=1/2 were considered as neurons. In this paper, for the first time, we study the function of associative memory using three-level quantum elements-qutrits, represented by spins with S=1. We record patterns with the help of projection operators. This choice is due to the need to operate with a state with a zero spin projection, whose interaction with the magnetic field vanishes. We recall the state corresponding to one of the patterns recorded in the memory, or superposition of such states by means of quantum annealing. To equalize the probabilities of finding the system in different states of superposition, an auxiliary Hamiltonian is proposed, which is turned off at the end of evolution. Simulations were performed on two and three qutrits and an increase in the memory capacity after replacing qubits with qutrits was shown.

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Держатели документа:
RAS, Fed Res Ctr, Kirensky Inst Phys, KSC,SB, Akademgorodok 50,Bld 38, Krasnoyarsk, Russia.

Доп.точки доступа:
Pichkovskiy, I. S.; Пичковский, Иван Сергеевич; Зобов, Владимир Евгеньевич
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    Atomic layer deposition ZnO on porous Al2O3 nanofibers film / A. S. Voronin, A. N. Masiygin, M. S. Molokeev, S. V. Khartov // J. Phys. Conf. Ser. - 2020. - Vol. 1679, Is. 2. - Ст. 022072DOI 10.1088/1742-6596/1679/2/022072. - Cited References: 10. - Studies by scanning electron microscopy and X-ray powder diffraction were performed on the equipment of Krasnoyarsk Regional Center of Research Equipment of Federal Research Center «Krasnoyarsk Science Center SB RAS». The transmission electron microscopy investigations were conducted in 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
   Перевод заглавия: Нанесение атомного слоя ZnO на пленку из пористых нановолокон Al2O3
Кл.слова (ненормированные):
Alumina -- Aluminum oxide -- Atomic layer deposition -- Atoms -- Composite structures -- High resolution transmission electron microscopy -- II-VI semiconductors -- Nanofibers -- Oxide minerals -- Scanning electron microscopy
Аннотация: The paper presents the results of the formation and study of the morphological and structural characteristics of the mesoporous ZnO / Al2O3 nanofibers film (ZANF). The deposition of a ZnO layer on Al2O3 nanofibers film (ANF) ~ 1 µm thick was carried out by the method of atomic layer deposition. The morphology of the mesoporous composite layer ZnO / Al2O3 (ZANF) has been studied by scanning and transmission electron microscopy. It is shown that in the process of atomic layer deposition, the ZnO layer grows according to the Stranski-Krastanov mechanism. A ZnO layer less than 5 nm thick gives an island structure in which Al2O3 nanofibers are uniformly coated with ZnO particles, an increase in the ZnO layer thickness to 15 nm demonstrates a continuous coating of Al2O3 nanofibers. The system has a core-shell structure. The resulting composite structures are promising for applications in photocatalysis and gas sensing.

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Держатели документа:
Federal Research Center Krasnoyarsk Scientific Center, Siberian Branch, Russian Academy of Sciences (KSC SB RAS), Krasnoyarsk, 660036, Russian Federation
Siberian Federal University, Krasnoyarsk, 660041, Russian Federation
Reshetnev Siberian State University Science and Technology, Krasnoyarsk, 660037, Russian Federation
Kirensky Institute of Physics (FRC KSC SB RAS), Krasnoyarsk, 660036, Russian Federation

Доп.точки доступа:
Voronin, A. S.; Masiygin, A. N.; Molokeev, M. S.; Молокеев, Максим Сергеевич; Khartov, S. V.; International Scientific Conference on Applied Physics, Information Technologies and Engineering(2nd ; 25 September - 4 October 2020 ; Krasnoyarsk, Russian Federation)
}
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    Automated measuring system for studying ferromagnetic resonance spectra in the radio frequency range / A. V. Burmitskikh, B. A. Belyaev, N. M. Boev, S. A. Kleshnina // Ural symposium on biomedical engineering, radioelectronics and information technology (USBEREIT) : Proceedings / Ural Symposium on Biomedical Engineering, Radioelectronics and Information Technology (2021 ; May 13-14 ; Yekaterinburg (Hybrid event)) : IEEE, 2021. - P. 0267-0271DOI 10.1109/USBEREIT51232.2021.9455019. - Cited References: 13
   Перевод заглавия: Автоматизированная измерительная система для исследования спектров ферромагнитного резонанса в радиочастотном диапазоне
Аннотация: The automated system for measuring ferromagnetic resonance spectra in the radio frequency range has been developed for measuring magnetic characteristics of thin films. The system allows measuring the spectrum of ferromagnetic resonance at a frequency of 12 MHz with a field step of 0.01 Oe (constant or variable) and with 0.0125° angle resolution. Automatic determination of the anisotropy field and automatic sensitivity adjustment of the measuring system allows obtaining data from permalloy thin magnetic films samples with thickness less than 50 nm. Measurements can be carried out with different directions of external magnetic fields (in the plane of the TMF sample) and with rotation of the sample in the external magnetic field. This is achieved by the independent automatic rotation of the sample and high-frequency Helmholtz coils. Processing and transmission of the received data in the digital form provides automatic processing and representation of measurement results on the PC screen. The measurement results can be used for TMF study, assessing the quality, rejection and further use in finished devices.

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Доп.точки доступа:
Burmitskikh, A. V.; Бурмитских, Антон Владимирович; Belyaev, B. A.; Беляев, Борис Афанасьевич; Boev, N. M.; Боев, Никита Михайлович; Kleshnina, S. A.; Клешнина, Софья Андреевна; Ural Symposium on Biomedical Engineering, Radioelectronics and Information Technology(2021 ; May 13-14 ; Yekaterinburg (Hybrid event)); Уральский симпозиум IEEE по биомедицинской инженерии, радиоэлектронике и информационным технологиям(2021 ; 13-14 мая ; Екатеринбург)
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Fedchenko, D. P.
Boundary problems in cellular automata for topological insulators / D. P. Fedchenko, V. V. Novikov, I. V. Timofeev // J. Phys. Conf. Ser. - 2021. - Vol. 2094: III International Scientific Conference on Applied Physics, Information Technologies and Engineering (APITECH-III 2021) 24 September – 3 October 2021, Krasnoyarsk, Russia, Is. 2. - Ст. 022079, DOI 10.1088/1742-6596/2094/2/022079. - Cited References: 10. - This study was supported by the Russian Foundation for Basic Research, project no. 19-52-52006
Аннотация: In physics, a topological insulator is a material that simultaneously exhibits the properties of a conductor on the surface and an insulator in the bulk. An abstract model of a twodimensional topological insulator is described in terms of tricolour cellular automata and excitations of a topological insulator are classified.

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

Доп.точки доступа:
Novikov, V. V.; Timofeev, I. V.; Тимофеев, Иван Владимирович; Федченко, Дмитрий Петрович; International Scientific Conference on Applied Physics, Information Technologies and Engineering(III ; 24 September - 3 October 2021 ; Krasnoyarsk, Russia)
}
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Muzalevskiy, K. V.
Calibration of UWB UAV radar for the remote measurement of reflection coefficient / K. Muzalevskiy, M. Mikhaylov, Z. Ruzicka // IEEE Ural-Siberian Conference on Biomedical Engineering, Radioelectronics and Information Technology (USBEREIT). - 2023. - P. 105-108, DOI 10.1109/USBEREIT58508.2023.10158870. - Cited References: 16. - The investigation supported by the Russian Science Foundation and the Krasnoyarsk Regional Science Foundation, project № 22-17-20042
Кл.слова (ненормированные):
Microwave remote sensing -- ultra-wide band remote sensing -- unmanned aerial vehicle -- log-periodic dipole antenna -- reflection coefficient
Аннотация: In this work, the possibility of the remote measurement of reflection coefficient in the ultra-wide frequency range from 425 MHz to 1010 MHz from the board of unmanned aerial vehicle (UAV) using ultra-wide band (UWB) radar was investigated. With this in mind, the antenna-feeder path of UAV UWB radar is calibrated. The calibration process consisted in measuring the reflection coefficient from the brass mesh sheet at various UAV hovering heights. Printed log-periodic dipole antenna was used as transmitter-receiver antenna. As a result, the antenna return loss in an empty-room and the complex antenna response function of the antenna-feeder path of the UAV UWB radar were found. It is shown that the amplitude of the reflected wave from a brass mesh sheet can be measured with root-mean square error (RMSE), RMSE=0.017 1/m and a determination coefficient (R 2 ) of R 2 = 0.967. Therewith the UAV hovering heights measured by the pulse method and the on-board laser rangefinder correlates with each other with R2=0.999 and with RMSE=3.5cm (distance measurement error of the laser rangefinder is ±1cm, surface irregularities of the brass mesh sheet were no more than 1.5cm). Measured in the frequency range from 500 MHz to 900 MHz, the reflection coefficient from fresh lake water by UAV UWB radar with a relative error of no more than 7.5% (practically does not depend on the height of the UAV hovering, approximately from 2.2 m to 5.2 m) coincides with the calculated one by the Stogryn's formulas.

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Держатели документа:
Laboratory of Radiophysics of the Earth Remote Sensing, Kirensky Institute of Physics Federal Research Center KSC Siberian Branch Russian Academy of Science, Krasnoyarsk, The Russian Federation

Доп.точки доступа:
Mikhaylov, M. I.; Михайлов, Михаил Иванович; Ruzicka, Z.; Ружичка, Зденек; Музалевский, Константин Викторович; IEEE Ural-Siberian Conference on Biomedical Engineering, Radioelectronics and Information Technology(15-17 May 2023 ; Yekaterinburg, Russia)
}
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    Zobov, V. E.
    Clustering by quantum annealing on the three-level quantum elements qutrits / V. E. Zobov, I. S. Pichkovskiy // Quantum Inf. Process. - 2022. - Vol. 21, Is. 4. - Ст. 144, DOI 10.1007/s11128-022-03482-0. - Cited References: 28. - This study was supported by the Theoretical Physics and Mathematics Advancement Foundation “BASIS” #20-1-5-41-1. We are grateful for their trust and assistance in research . - ISSN 1570-0755
   Перевод заглавия: Кластеризация посредством квантового отжига на квантовых трёхуровневых элементах кутритах
Кл.слова (ненормированные):
Quantum adiabatic algorithm -- Quantum annealing -- Qutrit -- Clustering
Аннотация: Clustering is grouping of data by the proximity of some properties. We report on the possibility of increasing the efficiency of clustering of points in a plane using artificial quantum neural networks after the replacement of the two-level neurons called qubits represented by the spins S = 1/2 by the three-level neurons called qutrits represented by the spins S = 1. The problem has been solved by the slow adiabatic change of the Hamiltonian in time. The methods for controlling a qutrit system using projection operators have been developed and the numerical simulation has been performed. The Hamiltonians for two well-known clustering methods, one-hot encoding and k-means, have been built. The first method has been used to partition a set of six points into three or two clusters and the second method, to partition a set of nine points into three clusters and seven points into four clusters. The simulation has shown that the clustering problem can be effectively solved on qutrits represented by the spins S = 1. The advantages of clustering on qutrits over that on qubits have been demonstrated. In particular, the number of qutrits required to represent N data points is smaller than the number of qubits by a factor of log 2N/ log 3N. For qutrits, the simplest is to partition the data points into three clusters rather than two ones. At the data partition into more than three clusters, it has been proposed to number the clusters by the numbers of states of the corresponding multi-spin subsystems, instead of using the numbers of individual spins. This reduces even more the number of qutrits (Nlog 3K instead of NK) required to implement the algorithm.

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Держатели документа:
Kirensky Institute of Physics, Federal Research Center KSC SB RAS, Krasnoyarsk, 660036, Russian Federation

Доп.точки доступа:
Pichkovskiy, I. S.; Пичковский, Иван Сергеевич; Зобов, Владимир Евгеньевич
}
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Ruzicka, Z.
Database approach to develop and validate the Soil Moisture and temperature retrieval algorithm using SMOS radiometric data / Z. Ruzicka, K. V. Muzalevskiy // Int. Sib. Conf. on Control and Communicat. (SIBCON 2015) : Proceedings : IEEE-Institute Electrical and Electronics Engineers, 2015, DOI 10.1109/SIBCON.2015.7146965 . - ISBN 9781479971022 (ISBN)
Кл.слова (ненормированные):
Arctic tundra -- Database management system -- SMOS -- Soil moisture -- Soil temperature -- Algorithms -- Data handling -- Database systems -- Information systems -- Management information systems -- MATLAB -- Moisture -- Numerical methods -- Radiometry -- Soil moisture -- Soil surveys -- Soils -- Temperature -- Arctic tundra -- Automated processing -- North Slope of Alaska -- Retrieval algorithms -- SMOS -- Soil Moisture and Ocean Salinity (SMOS) -- Soil temperature -- Temperature retrieval -- Search engines
Аннотация: This paper describes the information system, which has been developed for the storing and automated processing of the Soil Moisture and Ocean Salinity (SMOS) Level 1C radiometric and Level 2 soil moisture data over space and time. The information system contains the database for storing the data and the interface for automated processing. That interface has been developed to provide access to these specific data from the database within the Matlab numerical computing environment used for the realization of algorithms and methods. The developed information system helps to speed up the processing of SMOS data in regional scale over a long period of time, and has successfully been used for the validation of soil temperature and moisture retrieval algorithms over the North Slope of Alaska and Yamal peninsula. © 2015 IEEE.

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Доп.точки доступа:
Muzalevskiy, K. V.; Музалевский, Константин Викторович; Ружичка, Зденек; International Siberian Conference on Control and Communications(11 ; 2015 ; May 21-23 ; Omsk)
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Demountable K/Q band coaxial feed for Cassegrain antenna / K. V. Lemberg, N. M. Boev, A. V. Kantyshev [et al.] // 2022 IEEE International Multi-Conference on Engineering, Computer and Information Sciences, SIBIRCON 2022 : IEEE, 2022. - P. 1150-1153, DOI 10.1109/SIBIRCON56155.2022.10016929. - Cited References: 11
Кл.слова (ненормированные):
coaxial waveguides -- coaxial joint -- reflector antenna feeds -- dual-band feeds -- multiband antennas -- satellite communication
Аннотация: In this paper demountable K/Q bands feed for satellite communication Cassegrain antenna is reported. The feed is based on the combined coaxial-circular waveguide, in which outer wall of a circular waveguide is used as an inner conductor of a coaxial waveguide. This design allows to simultaneously transmit and receive signals in two widely separated frequency bands. A coaxial joint, which is the key part of the feed, is proposed and described in details. The joint performs several functions. First is to transmit the microwave energy through both waveguides. Second is ensuring the waveguides sealing. And third is ensuring the circular and coaxial waveguides alignment. The joint simulation results demonstrated return loss below-20 dB and insertion loss less than 0.06 dB in 20-21 GHz frequency range (K-band) as well as return loss below-30 dB and insertion loss less than 0.15 dB in 43-45.5 GHz frequency range (Q-band). Mechanical prototype of the joint was manufactured and tested.

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Держатели документа:
Scientific Instruments Lab, Kirensky Institute of Physics, Krasnoyarsk, Russian Federation
Space Systems Design Office, JSC Information Satellite Systems, Zheleznogorsk, Russian Federation

Доп.точки доступа:
Lemberg, K. V.; Лемберг, Константин Вячеславович; Boev, N. M.; Боев, Никита Михайлович; Kantyshev, A. V.; Grican, O. B.; Shabanov, D. A.; Шабанов, Дмитрий Александрович; IEEE International Multi-Conference on Engineering, Computer and Information Sciences 2022(1-13 November 2022 ; Yekaterinburg, Russian Federation)
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Development of scattering media optics methods to calculate optical properties of polymer dispersed liquid crystal films / V. A. Loiko [et al.] // EuroDisplay 2017 : Abstract book. - 2017. - P. 27-28

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Доп.точки доступа:
Loiko, V. A.; Konkolovich, A. V.; Krakhalev, M. N.; Крахалев, Михаил Николаевич; Miskevich, A. A.; Prishchepa, O. O.; Прищепа, Оксана Олеговна; Zyryanov, V. Ya.; Зырянов, Виктор Яковлевич; EuroDisplay conference(2017 ; 31 Oct. - 2 Nov. ; Berlin, Germany); Society for Information Displays; Institute of Physics
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10.

Dissipative structures in thin films of cavitation-activated soot suspensions / O. P. Stebeleva [et al.] // J. Phys. Conf. Ser. - 2019. - Vol. 1399. - Ст. 044073, DOI 10.1088/1742-6596/1399/4/044073. - Cited References: 8 . - ISSN 1742-6588. - ISSN 1742-6596
Рубрики:
Engineering and Materials Science
Аннотация: This paper presents analysis of optical images of films obtained by evaporation (293 K) of a thin layer of low-concentrated (1% wt.) aqueous soot suspensions in a Petri dish. Suspensions of wood, fullerene and diamond-containing (after detonation synthesis) soot were prepared using hydrodynamic dispersion in a cavitation mixer with a wedge-shaped cavitator with the rotor's angular velocity of rotation being 10000 rpm. The components of the hydrodynamic dispersion process are turbulent micro-mixing and bubble cavitation. As a result of intense turbulence, carbon suspensions assumed properties of non-equilibrium systems. The images of an optical microscope revealed self-organized dissipative micron-sized structures in the dried films being present there in the form of chain, branched and ring-shaped cluster fractals of various dimensions that look very similar to nanotubes. The self-assembling effect was identified for all the types of suspensions under study. The EPR method was used to study the change in the electronic structure of soot resulting from the exposure to high temperatures and pressures that occur when the cavitation bubbles collapse (cavitational activation). The dynamics of changes in dissipative structures in the process of film drying was monitored.

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Держатели документа:
Siberian Federal University, Svobodnyy Ave, 79, Krasnoyarsk, 660049, Russia
L.V. Kirensky Institute of Physics SB RAS, Federal Research Center "Krasnoyarsk Science Center of the Siberian Branch of the Russian Academy of Sciences", Akademgorodok, 50, Krasnoyarsk, 660021, Russia
Federal Research Center "Krasnoyarsk Science Center of the Siberian Branch of the Russian Academy of Sciences", Akademgorodok, 50, Krasnoyarsk, 660021, Russia
Krasnoyarsk Institute of Railway Engineering Branch of Irkutsk State Transport University, Lado Kechoveli st, 89, Krasnoyarsk, 660028, Russia

Доп.точки доступа:
Stebeleva, O. P.; Kashkina, L. V.; Petrakovskaya, E. A.; Петраковская, Элеонора Анатольевна; Nikitin, S. L.; Dobrosmyslov, S. S.; Rublev, G. V.; "Conference on Applied Physics, Information Technologies and Engineering"(2019 ; Sept. ; 25-27 ; Krasnoyarsk, Russian Federation); "Прикладная физика, информационные технологии и инжиниринг", международная конференция(2019 ; сент. ; 25-27 ; Красноярск)
}
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11.

Effect of cavitational conditioning of water on stability of coal-water slurry / O. P. Stebeleva, L. V. Kashkina, T. V. Rubleva [et al.] // J. Phys. Conf. Ser. - 2020. - Vol. 1679, Is. 5. - Ст. 052045DOI 10.1088/1742-6596/1679/5/052045. - Cited References: 13
Кл.слова (ненормированные):
Computerized tomography -- Fuels -- Magnetic resonance -- Coal water fuel -- Coal water slurry -- Distilled water -- Kansk-Achinsk coals -- Local density -- Magnetic resonance tomography -- Rheological characteristics -- Vertical axis -- Coal
Аннотация: Coal-water slurry (CWS) is the basis of modern alternative fuel - coal-water fuel (CWF). To produce stable coal-water slurry, i.e. coagulation and separation is an important technological problem. The paper studies CWS the disperse part of which is fine brown Kansk-Achinsk coal, the dispersive part is distilled water. Effect of cavitational conditioning on CWS stability has been studied. The efficiency was for the first time studied by magnetic resonance tomography (MRT). In the experiment spin-lattice relaxation time profiles T1 were recorded along the central vertical axis of the samples. T1 dynamics correlates well with the local density of CWS solid phase. MRT data was sequentially interpreted with rheological characteristics of CWS. Feasibility of applying MRT method to find out time and space evolution of CWS has been estimated. The MRT methods has been shown to be efficient in resolution of technological problems to improve consumer properties of the coal-water fuel.

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Держатели документа:
Siberian Federal University, Svobodnyy Ave 79, Krasnoyarsk, 660049, Russian Federation
Federal Research Center "krasnoyarsk Scientific Center, The Siberian Branch of the Russian Academy of Sciences, L.V. Kirensky Institute of Physics SB RAS, Krasnoyarsk 50, Akademgorodok, 660021, Russian Federation
Federal Research Center, "Krasnoyarsk Scientific Center of the Siberian Branch of the Russian Academy of Sciences", Akademgorodok, 50, Krasnoyarsk, 660021, Russian Federation

Доп.точки доступа:
Stebeleva, O. P.; Kashkina, L. V.; Rubleva, T. V.; Dobrosmyslov, S. S.; Добросмыслов, С. С.; Vshivkova, O. A.; International Scientific Conference on Applied Physics, Information Technologies and Engineering(2nd ; 25 September - 4 October 2020 ; Krasnoyarsk, Russian Federation)
}
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12.

Effect of nanoparticles in growth of test - bacteria / S. V. Stolyar [et al.] // J. Phys. Conf. Ser. - 2019. - Vol. 1399. - Ст. 022029, DOI 10.1088/1742-6596/1399/2/022029. - Cited References: 10 . - ISSN 1742-6588. - ISSN 1742-6596
Рубрики:
Applied Physics
Аннотация: Confident effect of five magnetic composite nanoparticles (FeP@Ag, FeP@Pd, CoP, NiP, Fe2O3@AГ) on growth of test bacteria colonies (Acinetobacter baumannii, Еscherichia coli, Klebsiella pneumoniae, Pseudomonas aeruginosa, Staphylococcus aureus) in five replicates each is considered. Reliable inhibitors of colonies of all five test bacteria were nanoparticles FeP@Ag. CoP nanoparticles are reliable inhibitors of growth of 4 test bacteria (except for test bacteria Escherichia сoli). NiP nanoparticles are reliable inhibitors of growth of 2 test bacteria: Escherichia сoli and Klebsiella pneumoniae. Bacteria Escherichia сoli were most sensitive to the effect of magnetic nanoparticles; and bacteria Pseudomonas aeruginosa and Staphylococcus aureus were most resistant to the effect of magnetic nanoparticles. The prospects of the method are in the possibility of multiple reuse of the magnetic particles with antimicrobial properties for bacterial decontamination of the studied sources of water and removal of magnetic nanoparticles from the treated liquids by electromagnet. The method can find use in water treatment facilities for household, Industrial and medical wastes.

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Держатели документа:
Federal Research Center "Krasnoyarsk Science Center" of the Siberian Branch of the Russian Academy of Sciences, Krasnoyarsk, Akademgorodok, 50, Russia
Siberian Federal University, Krasnoyarsk, Svobodnyi pr., 79, Russia
Kirensky Institute of Physics, Krasnoyarsk, Akademgorodok, 50/38, Russia
Institute of Biophysics of the Siberian Branch of the Russian Academy of Sciences, Krasnoyarsk, Akademgorodok, 50/12, Russia

Доп.точки доступа:
Stolyar, S. V.; Столяр, Сергей Викторович; Chekanova, L. A.; Чеканова, Лидия Александровна; Yaroslavtsev, R. N.; Ярославцев, Роман Николаевич; Ladygina, V. P.; Tirranen, L. S.; International Scientific Conference "Conference on Applied Physics, Information Technologies and Engineering"(25-27 September 2019 ; Krasnoyarsk, Russian Federation)
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13.

Electro-optical response of PDLC films with conical boundary conditions / M. N. Krakhalev [et al.] // EuroDisplay 2019 : book of abstracts of International conference. - 2019. - Ст. O-31. - P. 63. - Cited References: 3

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Krakhalev, M. N.; Крахалев, Михаил Николаевич; Prishchepa, O. O.; Прищепа, Оксана Олеговна; Feyzer, K. A.; Sutormin, V. S.; Сутормин, Виталий Сергеевич; Loiko, V. A.; Лойко В. А.; Konkolovich, A. V.; Конколович А. В. ; Miskevich, A. A.; Мискевич А. А.; Zyryanov, V. Ya.; Зырянов, Виктор Яковлевич; EuroDisplay international conference(2019 ; Sept. ; 16-20 ; Minsk, Belarus); Society for Information Displays; Белорусский государственный университет информатики и радиоэлектроники
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14.

Electrooptical bistability and thermoaddressed information recording in polymer dispersed cholesterics / V. A. Zhulkov, S. L. Smorgon, V. Ya. Zyryanov, V. F. Shabanov // Proceedings SPIE. - 1996. - Vol. 2731. - P. 162-170
Аннотация: The reflection spectra of cholesteric liquid crystals dispersed in polymer and comprising pyrimidine dopes are investigated in the entire temperature range of the mesophase existence. One or several oxyphenyl substituents in an ortho position implemented into a pyrimidine system induce the second reflection region. The reflection curves for different wavelengths corresponding to regions I and II merge with temperature. Thermodynamically equilibrium states of polymer-dispersed cholesterics under the influence of polar pyrimidine dopes are considered. The pyrimidine effect is modulated by the orientational near-surface potential. The existence of two space regions of a spherical droplet with different helix pitches is validated. The natural helix pitch is retained inside the droplet while a new pyrimidine-induced pitch is formed in a layer close to the droplet surface. The results obtained describe the existence of two reflection regions and the temperature behavior of the helix pitch.

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Доп.точки доступа:
Zhulkov, V. A.; Жуйков, Владимир Александрович; Smorgon, S. L.; Сморгон, Сергей Леонидович; Zyryanov, V. Ya.; Зырянов, Виктор Яковлевич; Shabanov, V. F.; Шабанов, Василий Филиппович; International liquid crystal workshop on surface phenomena(1995 ; 21-23 June ; St. Petersburg)
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15.

Shauro, V. P.
Exact solutions for time-optimal control of spin I=1 by NMR / V. Shauro // Quantum Inf. Process. - 2015. - Vol. 14, Is. 7. - P. 2345-2355, DOI 10.1007/s11128-015-0999-8. - Cited References:34. - The author thanks V.E. Zobov for fruitful discussions. This study was supported by the Russian Foundation for Basic Research, Project No. 14-07-31086. . - ISSN 1570. - ISSN 1573-1332. -

РУБ Physics, Multidisciplinary + Physics, Mathematical
Рубрики:
QUANTUM COMPUTATION
SYSTEMS
Кл.слова (ненормированные):
Quantum gate -- Qutrit -- Time-optimal control -- Nuclear magnetic resonance
Аннотация: We consider the problem of time-optimal control of quadrupole nucleus with the spin I = 1 by NMR. In contrast to the conventional methods based on selective pulses, the control is implemented using nonselective pulses separated by free-evolution intervals. Using the Cartan decomposition, the system of equations is obtained for finding parameters of a control field. Partial time-optimal solutions for the important single-qutrit gates (selective rotations and quantum Fourier transform) are found. The strong dependence of minimum gate implementation times on global phase of the gate is observed. The analytical values of minimum times are consistent with the numerical data.

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Доп.точки доступа:
Шауро, Виталий Павлович; Russian Foundation for Basic Research [14-07-31086]
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16.

Morozov, E. V.
From components to phase-dependent dynamics of diffusivity in wax solutions subjected to fluid-solid phase transition: Insights from Pulsed Field Gradient NMR / E. V. Morozov, P. V. Nizovtseva, O. N. Martyanov // Energy Fuels. - 2022. - Vol. 36, Is. 24. - P. 14696-14709, DOI 10.1021/acs.energyfuels.2c02943. - Cited References: 76. - The present research was performed with the financial support of the Russian Science Foundation (project no. 21-13-00171, http://rscf.ru/project/21-13-00171/) . - ISSN 0887-0624. - ISSN 1520-5029
Кл.слова (ненормированные):
Concentration ranges -- Crystal networks -- Diffusion components -- Fluid-solid phase transition -- N-dodecane -- Phase dependent -- Pulsed field gradient NMR -- Supplementary information -- Wax appearance temperature -- Wax crystals
Аннотация: The evolution of solvent and solute diffusivity during fluid-solid phase transition was studied in model wax in n-dodecane solutions in a wide concentration range. Studied systems were characterized using viscosity measurements to provide supplementary information related to wax precipitation onset, while diffusion coefficients of n-dodecane and paraffin molecules were quantified using Pulsed Field Gradient (PFG) NMR. It was revealed that above the wax appearance temperature (WAT), the Hayduk-Minhas equation adequately predicts the solute and solvent diffusivity. At lower temperatures (below the WAT), three distinct diffusive components appear, which no longer originate from individual molecular components but correspond to a liquid phase differing in terms of association to the wax crystal network. These diffusion components were concluded to contain dodecane and the residual dissolved wax; the major components among them correspond to fluid, which relatively freely diffuses between the wax microcrystals and experiences the hindrance due to the wax gel network, and the minor components correspond to the fluid closely associated with the wax crystals. Unlike at high temperatures, the Hayduk-Minhas equation was found to be unable to predict adequately the diffusivity below the WAT. Using Singh's approach, the aspect ratio of wax crystals was calculated for different temperatures and concentrations and its complex nonlinear behavior was observed. It turned out that none of the models available differentiate the fluids with respect to the wax crystal network that leaves out of modeling the diffusion components with reduced mobility. The results indicate that the intuitive paradigm of component-dependent dynamics of solvent and solute diffusivity should be changed to phase-dependent dynamics once the system turns into wax gel since the diffusion of separate components becomes the diffusion of separate phases. This understanding shows a new route to improving the wax deposition modeling, which will facilitate an increase of effectiveness of the remedial strategies in the petroleum industry.

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Держатели документа:
Institute of Chemistry and Chemical Technology, Federal Research Center, Krasnoyarsk Science Center, Siberian Branch, Russian Academy of Sciences, Akademgorodok 50/24, Krasnoyarsk, 660036, Russian Federation
Kirensky Institute of Physics, Federal Research Center, Krasnoyarsk Science Center, Siberian Branch, Russian Academy of Sciences, Akademgorodok 50/38, Krasnoyarsk, 660036, Russian Federation
Reshetnev Siberian State University of Science and Technology, Krasnoyarsky Rabochy Ave. 31, Krasnoyarsk, 660037, Russian Federation
Boreskov Institute of Catalysis, Siberian Branch, Russian Academy of Sciences, Ak. Lavrentieva 5, Novosibirsk, 630090, Russian Federation

Доп.точки доступа:
Nizovtseva, P. V.; Martyanov, O. N.; Морозов, Евгений Владимирович
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17.

Grayness scale during thermocontact information recording in polymer-encapsulated cholesteric liquid crystals / A. V. Barannik [и др.] // Zhurnal Tek. Fiz. - 1996. - Vol. 66, Is. 5. - P. 177-179. - Cited References: 7 . - ISSN 0044-4642

РУБ Physics, Applied

WOS

Доп.точки доступа:
Barannik, A. V.; Баранник, Алексей Владимирович; Zhuikov, V. A.; Жуйков, Владимир Александрович; Zyryanov, V. Ya.; Зырянов, Виктор Яковлевич; Smorgon, S. L.; Сморгон, Сергей Леонидович; Shabanov, V. F.; Шабанов, Василий Филиппович
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18.

Belyaev, B. A.
Investigation of microstrip band-pass filters based on 2D electromagnetic crystal / B. Belyaev, S. Khodenkov, D. Dmitriev // Proceedings - 2018 Ural Symposium on Biomedical Engineering, Radioelectronics and Information Technology, USBEREIT 2018 : Institute of Electrical and Electronics Engineers Inc., 2018. - P. 245-248, DOI 10.1109/USBEREIT.2018.8384595. - Cited References: 14. - This study was supported by the Ministry of Education and Science of the Russian Federation, agreement no. 14.575.21.0142.
Кл.слова (ненормированные):
microstrip filter -- 2D electromagnetic crystal -- strip conductor -- amplitude-frequency characteristics -- irregular resonator
Аннотация: Electrodynamic numerical analysis of 3D models was used in order to study microstrip filters of 4-th and 6-th order. When constructing 2D microwave structures, irregular resonators with Π-shaped slit in a grounded strip conductor were used. The band-pass filters tuned by manual parametric synthesis have high frequency-selective properties, including extended high frequency stopband.

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Держатели документа:
Electrodynamics and Microwave Electronics Laboratory, Kirensky Institute of Physics, Krasnoyarsk, Russian Federation
Physics Department, Reshetnev Siberian State University of Science and Technology, Krasnoyarsk, Russian Federation
Military Engineering, Institute Siberian Federal University, Krasnoyarsk, Russian Federation

Доп.точки доступа:
Khodenkov, S.; Dmitriev, D.; Беляев, Борис Афанасьевич; Ural Symposium on Biomedical Engineering, Radioelectronics and Information Technology(2018 ; 7 - 8 May ; Yekaterinburg)
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19.

Investigation of Microstrip High-Pass Filters Based on Multimode Resonator / B. Belyaev [et al.] // Ural Symposium on Biomedical Engineering, Radioelectronics and Information Technology, USBEREIT 2019 : Proceedings : IEEE, 2019. - P. 383-386, DOI 10.1109/USBEREIT.2019.8736572. - Cited References: 14
Кл.слова (ненормированные):
high-pass filter -- multimode resonator -- strip conductor -- amplitude-frequency characteristics -- microwave -- microstrip
Аннотация: Microstrip high-pass filters were investigated by means of electrodynamic numerical analysis of 3D models. In the microwave constructions a new multimode resonator with a strip conductor of 'E' shape was used, the central segment of which is grounded at its base. Synthesized filters with fixed cutoff frequency fc=3 GHz have high frequency-selective properties. © 2019 IEEE.

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Держатели документа:
Electrodynamics and Microwave Electronics Laboratory, Kirensky Institute of Physics, Krasnoyarsk, Russian Federation
The electronics and telecommunications department, Reshetnev Siberian State University of Science and Technology, Krasnoyarsk, Russian Federation

Доп.точки доступа:
Belyaev, B. A.; Беляев, Борис Афанасьевич; Khodenkov, S.; Nazarov, G.; Shepeta, N.; Panin, D.; Ural Symposium on Biomedical Engineering, Radioelectronics and Information Technology(25 - 26 April 2019 ; Yekaterinburg, Russian Federation)
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20.

Laser addressed information recording in bistable PDChLС films / S. L. Smorgon, V. A. Zhuikov, V. Ya. Zyryanov, V. F. Shabanov // 16th International Liquid Crystal Conference (ILCC 1996) : program and abstract book. - 1996. - Ст. B1P.39. - P. 53
Аннотация: Polymer dispersed cholesteric liquid crystal (PDChLC) films exhibiting a large hysteresis of the volt-contrast curve were used for laser addressed information recording. Switching over ofthe bistable state was provided by a local heating of the PDChLC film due to the thermal effect of the light A proper dye was added to ChLC to increase the light absorption and thus improve sensitivity of the method. Unlike the photoaddressed method [1], here recording is possible not only in a normal mode (a transparent spot against a scattering background), but in a reverse mode too. With this method no photoconductive layer is required in the cell design. Image recording with grey levels was obtained by varying the duration or the amplitude ofthe laser pulse.

Материалы конференции

Доп.точки доступа:
Smorgon, S. L.; Сморгон, Сергей Леонидович; Zhuikov, V. A.; Жуйков, Владимир Александрович; Zyryanov, V. Ya.; Зырянов, Виктор Яковлевич; Shabanov, V. F.; Шабанов, Василий Филиппович; International Liquid Crystal Conference(16 ; 1996 ; 24-28 June ; Kent, US)
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