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Вид документа : Статья из сборника (однотомник)
Шифр издания :
Автор(ы) : Zyryanov V. Ya., Smorgon S. L., Shabanov V. F.
Заглавие : Polymer dispersed ferroelectric liquid crystals as display materials
Коллективы : SID International Symposium, Society for Information Display
Место публикации : SID International Symposium: digest of technical papers. - 1992. - Vol. 23. - P.776-777
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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Zobov V. E., Pichkovskiy I. S.
Заглавие : Clustering by quantum annealing on the three-level quantum elements qutrits
Место публикации : Quantum Inf. Process. - 2022. - Vol. 21, Is. 4. - Ст.144. - ISSN 15700755 (ISSN), DOI 10.1007/s11128-022-03482-0
Примечания : 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
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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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Tomilin F.N., Ovchinnikov S.G., Osina O.V., Kuzubov A.A., Volkova P.E., Ovchinnikova T.M., Soukhovolsky V.G.
Заглавие : Stability of forest lepidopteran pheromones against environmental factors
Место публикации : Biophysics. - 2011. - Vol. 56, Is. 4. - С. 695-701. - ISSN 00063509 (ISSN) , DOI 10.1134/S0006350911040282
Ключевые слова (''Своб.индексиров.''): information--insects--lepidoptera--pheromones--reproduction--search--dendrolimus superans--hexapoda--lepidoptera--lymantria
Аннотация: A quantum-chemical study has been made of the interactions of pheromones of some lepidopteran forest pests (Siberian moth Dendrolimus superans sibiricus Tschetv and gypsy moth Limantria dispar L.) with components of the ambient air, as well as the effect of electromagnetic radiation on the pheromones. It is found that the reactions of pheromones with substances contained in the forest air are irreversible and proceed with liberation of heat. Electromagnetic radiation quite strongly affects the structure of pheromones, whereby the pheromone molecule is activated and can readily enter into reactions. © 2011 Pleiades Publishing, Ltd.
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Вид документа : Статья из сборника (выпуск продолж. издания)
Шифр издания :
Автор(ы) : Govorun I. V., Solovev P. N., Boev N. M., Afonin A. O., Ugryumov A. V., Skomorokhov G. V.
Заглавие : Microstrip frequency doublers based on a thin magnetic film
Коллективы : Ural Symposium on Biomedical Engineering, Radioelectronics and Information Technology
Место публикации : Ural Symposium on Biomedical Engineering, Radioelectronics and Information Technology, USBEREIT 2022: Proceedings: IEEE, 2022. - P.126-130. - , DOI 10.1109/USBEREIT56278.2022.9923409
Примечания : Cited References: 11. - This work is supported by the Russian Science Foundation under grant 19-72-10047
Аннотация: The article presents the results of measuring the generation of the second harmonic in a microstrip transmission line and in a quarter-wavelength stepped-impedance microstrip resonator with a thin permalloy magnetic film (Ni80Fe20 ). The measurements were carried out for three samples with different thicknesses – 50 nm, 75 nm and 100 nm, at an input signal excitation frequency of 1 GHz and maximum input power of ~3500 mW. It was shown that the level of the second harmonic rises as the TMF thickness increases. It was found that a 100-nm sample generates the second harmonic more efficiently due to the larger ΔH FMR and the larger amount of magnetic material involved in the process of nonlinear conversion of the input power. It was shown that the resonator-based frequency doubler has a conversion factor ~4500 times higher than that of the doubler based on the microstrip line due to the higher value of the loaded Q-factor. Therefore, a quarter-wavelength stepped-impedance microstrip resonator can be used as a frequency doubler.
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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Zobov V. E., Lundin A. A.
Заглавие : Multiple-quantum NMR spectroscopy and quantum information spreading control in the spin systems of solids
Место публикации : J. Exp. Theor. Phys. - 2022. - Vol. 135, Is. 5. - P.752-761. - ISSN 10637761 (ISSN), DOI 10.1134/S1063776122110139. - ISSN 10906509 (eISSN)
Примечания : Cited References: 49. - This work was supported within the State assignment of the Ministry of Science and Higher Education of the Russian Federation (registration number 1021051201992-1)
Аннотация: Multiple-quantum (MQ) solid-state NMR spectroscopy allows the growth of multiple-spin correlations and, thus, the spreading of quantum information in the object under study to be observed. Recently, in [11] it was proposed to control this process through a controlled perturbation added to the effective Hamiltonian that causes degradation of correlated spin clusters with a rate determined by the number of spins K in a cluster. However, this perturbation can also lead to degradation whose rate is determined by the coherence order M. In this paper, to investigate the influence of a small added perturbation, we used an expansion into orthogonal operators that allowed the cluster size distribution to be taken into account. In our calculations we realized a simple model with known amplitudes of the expansion into a complete set of orthogonal operators in the absence of a perturbation. We performed numerical calculations of the “preparation time” dependences of the MQ spectra, their second moments, and the coherence orders at which the MQ spectra decrease by a factor of e as well as the average correlated spin cluster sizes K¯. The coherence-order-dependent contribution to the degradation is shown to change the shape of the MQ spectrum. In particular, as the preparation time increases, the MQ spectrum can be stabilized, while the growth of K¯ is retained. Due to the change in the shape of the MQ spectrum, the relations of its characteristics to the number K¯ change compared to those for the Gaussian function (traditionally used to process the experiments). These changes should be taken into account when studying the spreading of quantum information through MQ spectroscopy.
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Вид документа : Статья из сборника (однотомник)
Шифр издания :
Автор(ы) : Zyryanov V. Ya., Shabanov V. F., Smorgon S. L., Pozhidaev E. P.
Заглавие : Polymer dispersed ferroelectric liqud-crystal light valves
Коллективы : SID International Symposium, Society for Information Display
Место публикации : SID International Symposium: digest of technical papers. - 1994. - Vol. 25. - P.605-607
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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Morozov E. V., Nizovtseva P. V., Martyanov O. N.
Заглавие : From components to phase-dependent dynamics of diffusivity in wax solutions subjected to fluid-solid phase transition: Insights from Pulsed Field Gradient NMR
Место публикации : Energy Fuels. - 2022. - Vol. 36, Is. 24. - P.14696-14709. - ISSN 08870624 (ISSN), DOI 10.1021/acs.energyfuels.2c02943. - ISSN 15205029 (eISSN)
Примечания : 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/)
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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Вид документа : Статья из сборника (выпуск продолж. издания)
Шифр издания :
Автор(ы) : Nemtsev I. V., Shabanova O. V., Shestakov N. P., Ivanenko A. A., Cherepakhin A. V., Zyryanov V. Ya.
Заглавие : Photonic crystal structures based on submicron particles of polymethyl methacrylate
Коллективы : International Conference on Information Technology and Nanotechnology
Место публикации : J. Phys. Conf. Ser. - 2021. - Vol. 1745: 6th International Conference on Information Technology and Nanotechnology, ITNT 2020 (26 - 29 May 2020, Samara, Russian Federation) Conference code: 167456, Is. 1. - Ст.012024. - DOI 10.1088/1742-6596/1745/1/012024
Примечания : Cited References: 27. - We are grateful to the Krasnoyarsk Regional Center of Research Equipment of Federal Research Center «Krasnoyarsk Science Center SB RAS» for the provided equipment. The authors are also grateful to the Russian Foundation for Basic Research for financial support (grant No.18-42-243013)
Аннотация: Morphological parameters, reflection spectra, IR absorption spectra, and glass transition temperatures of submicron-sized spheres of poly(methyl methacrylate) (PMMA) formed in a water-acetone dispersion medium were studied in comparison with similar spheres obtained in distilled water. Dependence of a shrinkage degree of the submicrospheres on the concentration of acetone in water is studied. Features of the formation of periodic structures based on the water-acetone dispersions of PMMA in four different ways are considered. 2D (photonic crystal films) and 3D (artificial and inverse opals) resonance structures were obtained.
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Вид документа : Статья из сборника (выпуск продолж. издания)
Шифр издания :
Автор(ы) : Stebeleva O. P., Kashkina L. V., Rubleva T. V., Dobrosmyslov S. S., Vshivkova O. A.
Заглавие : Effect of cavitational conditioning of water on stability of coal-water slurry
Коллективы : International Scientific Conference on Applied Physics, Information Technologies and Engineering
Место публикации : J. Phys. Conf. Ser. - 2020. - Vol. 1679, Is. 5. - Ст.052045. - DOI 10.1088/1742-6596/1679/5/052045
Примечания : Cited References: 13
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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10.

Вид документа : Статья из сборника (выпуск продолж. издания)
Шифр издания :
Автор(ы) : Bukhanov E. R., Gurevich Y., Krakhalev M. N., Shabanov D. A.
Заглавие : Modeling optical properties of plant epicuticular wax
Коллективы : IEEE International Conference on Information Technology and Nanotechnology
Место публикации : Proceedings of ITNT 2020 - 6th IEEE International Conference on Information Technology and Nanotechnology: Institute of Electrical and Electronics Engineers Inc., 2020. - Ст.9253272. - DOI 10.1109/ITNT49337.2020.9253272
Примечания : Cited References: 39
Аннотация: Wax is found on the leaves almost of all plants. Its physicochemical and protective properties are widely discussed in the scientific literature. In the presented work, the influence of the structure of wax on the optical properties in wheat leaves and needles of blue spruce has been revealed for the first time. Long-period ordering was established. The structural elements are nanotubes up to several microns in length and about 150 nm in diameter. The paper presents the influence of a long-period structure on the optical properties and local characteristics of light waves, including the transmission spectrum, the density of photon states, as well as fluorescence spectra and polarization microscopy. Using modern mathematical tools, the main spectral and optical characteristics were calculated using the example of the wax cover of blue spruce and glaucas wheat. Based on calculations that establish the relationship between the structural, spectral and optical properties, the influence of wax structures on the process of photosynthesis was revealed.
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