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Your search keyword '"Zuev, D. A."' showing total 234 results
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234 results on '"Zuev, D. A."'

1. Revealing Low-Radiative Modes of Nanoresonators with Internal Raman Scattering

Author

Baryshnikova, K. V., Frizyuk, K., Zograf, G., Makarov, S., Baranov, M. A., Zuev, D., Milichko, V. A., Mukhin, I., Petrov, M., and Evlyukhin, A. B.

Subjects
Physics - Optics, Condensed Matter - Mesoscale and Nanoscale Physics
Abstract

Revealing hidden non-radiative (dark) of resonant nanostructures using optical methods such as dark-field spectroscopy often becomes a sophisticated problem due to a weak coupling of these modes with a far-field radiation, whereas methods of dark-modes spectroscopy, e.g. cathodoluminescence or elastic energy losses, are not always convenient in use. Here, we suggest an approach for experimental determining the mode structure of a nanoresonator basing on utilizing intrinsic incoherent Raman scattering. We theoretically predict the efficiency of this approach and realize it experimentally for silicon nanoparticle resonators possessing strong Raman line at 520 cm^-1. With this method, we studied a silicon nanoparticle placed on a gold substrate and reveal the spectral position of a low-radiative magnetic quadrupole mode which is hardly observable with common dark-field optical spectroscopy.

Published
2019
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7. Erratum to: Several Articles in JETP Letters

Author

Sazonova, S. V., Ageev, E. I., Iudin, V. A., Sun, Y., Petrova, E. A., Kustov, P. N., Yaroshenko, V. V., Mikhailova, J. V., Gudovskikh, A. S., Mukhin, I. S., Zuev, D. A., Ryzhkov, M. S., Khudaiberdiev, D. A., Kozlov, D. A., Kvon, Z. D., Mikhailov, N. N., Dvoretsky, S. A., Dolganov, P. V., Dolganov, V. K., Kats, E. I., Sakhin, V., Kukovitsky, E., Talanov, Y., Teitel’baum, G., Morgun, L., Borisov, A., Usoltsev, A., and Pudalov, V.

Published
2022
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9. Platinum Nanoparticles in Aqueous Solutions of a Chitosan–Vinylpyrrolidone Copolymer: Synthesis and Biological Activity.

Author

Zuev, D. N., Cherkasova, E. I., Apryatina, K. V., Zaitsev, S. D., and Smirnova, L. A.

Subjects
*PLATINUM nanoparticles, *BIOSYNTHESIS, *AQUEOUS solutions, *CISPLATIN, *ANTINEOPLASTIC agents
Abstract

Grafted copolymers of chitosan–vinylpyrrolidone, water-soluble at a pH of 6.8–7.5, were obtained. A technique has been developed for obtaining an aggregatively stable system of platinum nanoparticles in copolymer solutions with an average size of ~4 nm. The thermophysical and structural characteristics of the powdered composition of a platinum nanoparticle-copolymer are investigated. An in vitro comparison of the antitumor activity of solutions of the developed composition and cisplatin at the same platinum concentration was performed. It was found that with respect to the culture of HeLa Kyoto and A431 cancer cells, the composition is five and two times less effective than cisplatin, respectively. Along with this, the biocompatibility of the composition is 17 times higher than that of cisplatin, which allows its use at elevated concentrations and the development of an antitumor agent with platinum nanoparticles commensurate in effectiveness with cisplatin. [ABSTRACT FROM AUTHOR]

Published
2024
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10. Solving logistic tasks by parallelizing algorithms of the theory of direct decompositions of torsion-free abelian groups

Author

Blagoveshchenskaya E., Gruzdev N., and Zuev D.

Subjects
transport logistics, marshalling yards, the principle of parallelization, decomposition of abelian groups, graph transformations, a graph of a tiered-parallel form, Environmental sciences, GE1-350
Abstract

The paper considers the principles of parallelization at marshalling yards and determines their importance. There are presented the methods for direct decompositions of torsion-free Abelian groups of finite rank. There are applied the concepts of “conditionally linear graphs” depicting railway trains and their characteristics, including “quasi-length”, which characterizes the length of the corresponding “quasi-graph”. There has been formalized a graphical approach to the redistribution of railcars of incoming trains at a marshalling yard for the formation of outgoing trains. The corresponding algorithms have been developed.

Published
2023
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11. Advances in molecular quantum chemistry contained in the Q-Chem 4 program package

Author

Shao, Y, Gan, Z, Epifanovsky, E, Gilbert, ATB, Wormit, M, Kussmann, J, Lange, AW, Behn, A, Deng, J, Feng, X, Ghosh, D, Goldey, M, Horn, PR, Jacobson, LD, Kaliman, I, Khaliullin, RZ, Kus̈, T, Landau, A, Liu, J, Proynov, EI, Rhee, YM, Richard, RM, Rohrdanz, MA, Steele, RP, Sundstrom, EJ, Woodcock, HL, Zimmerman, PM, Zuev, D, Albrecht, B, Alguire, E, Austin, B, Beran, GJO, Bernard, YA, Berquist, E, Brandhorst, K, Bravaya, KB, Brown, ST, Casanova, D, Chang, CM, Chen, Y, Chien, SH, Closser, KD, Crittenden, DL, Diedenhofen, M, Distasio, RA, Do, H, Dutoi, AD, Edgar, RG, Fatehi, S, Fusti-Molnar, L, Ghysels, A, Golubeva-Zadorozhnaya, A, Gomes, J, Hanson-Heine, MWD, Harbach, PHP, Hauser, AW, Hohenstein, EG, Holden, ZC, Jagau, TC, Ji, H, Kaduk, B, Khistyaev, K, Kim, J, King, RA, Klunzinger, P, Kosenkov, D, Kowalczyk, T, Krauter, CM, Lao, KU, Laurent, AD, Lawler, KV, Levchenko, SV, Lin, CY, Liu, F, Livshits, E, Lochan, RC, Luenser, A, Manohar, P, Manzer, SF, Mao, SP, Mardirossian, N, Marenich, AV, Maurer, SA, Mayhall, NJ, Neuscamman, E, Oana, CM, Olivares-Amaya, R, Oneill, DP, Parkhill, JA, Perrine, TM, Peverati, R, Prociuk, A, Rehn, DR, Rosta, E, Russ, NJ, Sharada, SM, Sharma, S, Small, DW, and Sodt, A

Subjects
quantum chemistry, electron correlation, electronic structure theory, Q-Chem, computational modelling, software, density functional theory, Chemical Physics, Atomic, Molecular, Nuclear, Particle and Plasma Physics, Physical Chemistry, Theoretical and Computational Chemistry, Atomic, Molecular, Nuclear, Particle and Plasma Physics, Physical Chemistry (incl. Structural)
Abstract

A summary of the technical advances that are incorporated in the fourth major release of the Q-Chem quantum chemistry program is provided, covering approximately the last seven years. These include developments in density functional theory methods and algorithms, nuclear magnetic resonance (NMR) property evaluation, coupled cluster and perturbation theories, methods for electronically excited and open-shell species, tools for treating extended environments, algorithms for walking on potential surfaces, analysis tools, energy and electron transfer modelling, parallel computing capabilities, and graphical user interfaces. In addition, a selection of example case studies that illustrate these capabilities is given. These include extensive benchmarks of the comparative accuracy of modern density functionals for bonded and non-bonded interactions, tests of attenuated second order Møller-Plesset (MP2) methods for intermolecular interactions, a variety of parallel performance benchmarks, and tests of the accuracy of implicit solvation models. Some specific chemical examples include calculations on the strongly correlated Cr2 dimer, exploring zeolite-catalysed ethane dehydrogenation, energy decomposition analysis of a charged ter-molecular complex arising from glycerol photoionisation, and natural transition orbitals for a Frenkel exciton state in a nine-unit model of a self-assembling nanotube.

Published
2015

18. Control of photoluminescence of nitrogen-vacancy centers embedded in diamond nanoparticles coupled to silicon nanoantennas

Author

Zalogina, A, Javadzade, J, Savelev, R, Komissarenko, F, Uvarov, A, Mukhin, I, Shadrivov, I, Akimov, A, Zuev, D, Zalogina, A, Javadzade, J, Savelev, R, Komissarenko, F, Uvarov, A, Mukhin, I, Shadrivov, I, Akimov, A, and Zuev, D

Abstract

The development of nanophotonics systems for the manipulation of luminescent properties of single quantum emitters is essential for quantum communication and computing. Dielectric nanosystems enable various opportunities for light control through inherent electric and magnetic resonances; however, their full potential has not yet been discovered. Here, emission properties of nitrogen-vacancy (NV) centers in nanodiamonds placed in the near-field zone of silicon nanoresonators are investigated. It is demonstrated experimentally that the spontaneous emission rate of single NV centers in 50 nm nanodiamonds can be modified by their coupling to spherical nanoantennas, reducing the mode of the lifetime distribution by ≈ 2 times from 16 to 9 ns. It is also shown that the collected intensity of photoluminescence emission from multiple NV centers in a 150 nm nanodiamond coupled to a cylindrical nanoantenna is increased by more than 50% compared to the intensity from the same nanodiamond on a bare substrate.

Published
2023

31. Smart Cycling: Meaning, Experience and Governance

Author

Nikolaeva, A., te Brömmelstroet, M., Raven, R., Ranson, J., Zuev, D., Psarikidou, K., Popan, C., Urban Planning (AISSR, FMG), and Urban Studies

Abstract

The future of cycling is about to change - at least, if we believe the multitude of innovators, start-ups, industries, policy actors and consultants proposing to harness the power of digital techniques to improve and transform cycling experiences and infrastructures. This ‘smartification’ of cycling is increasingly attracting attention and investment as cities experiment with bikeshares and smart infrastructures, powered by ICT and IoT technologies. However, the proposed cycling futures receive little critical scrutiny. In this chapter we fill this gap by examining how innovations are believed to change the way cycling is practiced, made sense of and governed. We analyse texts on smart cycling innovations and outline changes envisioned by innovators. Having identified tensions between and within a range of promised futures, we conclude that smart cycling futures are multiple and contested, just as cycling presents are, offering diverse ideas about an ideal cycling experience, relationships with other road users, mode of governing cycling and so on.

Published
2021

40. Controllable formation of TiO2-rutile nanostructures with a specified morphology using thermal oxidation technique

Author

null Zuev D. A., null Kaniukov E. Yu., null Yakimchuk D. V., null Tvauri I. V., null Silaev I. V., null Il’in O. I., null Prigodich V. V., null Karsakova M. E., null Ponkratova E. Yu., and null Khubezhov S. A.

Abstract

Titanium dioxide nanostructures are formed by a simple one-stage method of thermal oxidation of titanium in the temperature range of 700-900oC. The structures were studied by high-resolution electron microscopy and X-ray diffraction. It is shown that, depending on the temperature, nanostructures in the form of crystallites, granules, and dendrites of TiO2-rutile are formed on the surface of metallic titanium. The proposed method is promising for the large-scale creation of advanced functionalized TiO2 surfaces applicable in catalysis and sensorics. Keywords: nanostructures, titanium dioxide, thermal oxidation, morphology, dendrites.

Published
2022

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