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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Churilov G. N., Krätschmer W., Osipova I. V., Glushchenko G. A., Vnukova N. G., Kolonenko A. L., Dudnik A. I.
Заглавие : Synthesis of fullerenes in a high-frequency arc plasma under elevated helium pressure
Место публикации : Carbon. - 2013. - Vol. 62. - P.389-392. - DOI 10.1016/j.carbon.2013.06.022
Аннотация: We show that in a carbon–helium high-frequency (66 kHz) arc discharge the fullerene yield and composition can be controlled by changing the helium pressure. By emission spectroscopy we could derive the excitation temperature within the arc. We found that the radial temperature gradient of the arc plasma increases with increasing pressure. We further found that with increasing pressure the yield of fullerenes reaches a maximum of 12.6 wt.% at 0.12 MPa pressure and in the range from 0.16 to 0.38 MPa the fullerene content in the carbon soot stays within the limits of 7.2–7.0 wt.%. The content of С70 and higher fullerenes relative to the total amount of extractable fullerenes increases with pressure. Our results suggest that in the carbon–helium plasma fullerenes are mainly formed in a top-down process by the decay and annealing of large, hot precursor carbon molecules.
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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Churilov G. N., Osipova I. V., Vnukova N. G., Glushchenko G. A., Petrakovskaya E. A., Kolonenko A. L., Chiganov A. S., Tomashevich Y. V., Zhyzhaev A. M.
Заглавие : Processing of detonation diamonds with metal-containing high-frequency arc plasma and their properties
Место публикации : Fuller. Nanotub. Carbon Nanostruct.: Taylor & Francis, 2012. - Vol. 20, Is. 4/7 SI. - P.611-615. - ISSN 1536-383X, DOI 10.1080/1536383X.2012.657014
Примечания : Cited References: 5. - The work was partially supported by RFBR foundation (project 09-03-00383).
Ключевые слова (''Своб.индексиров.''): nanodiamond--nanoparticle--metal-containing plasma
Аннотация: This paper describes coating of diamond powder with metal by plasma. Arc plasma was generated in double jet high-frequency argon-operated plasmatron with atomized metal inserts. The diamond powder was added to the plasma in a flow of helium. Copper and nickel coated particles of detonation and industrial diamonds were studied by XRD, XPS, SEM methods and electron magnetic resonance. Results of these studies are presented.
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Вид документа : Статья из сборника (однотомник)
Шифр издания :
Автор(ы) : Чурилов, Григорий Николаевич, Осипова, Ирина Владимировна, Внукова, Наталья Григорьевна, Глущенко, Гарий Анатольевич, Колоненко, Андрей Леонидович, Томашевич, Евгений Владимирович, Жижаев, Анатолий Михайлович
Заглавие : Установка для синтеза нанодисперсных веществ на основе углерода (фуллеренов, нанотруб и наночастиц со структурой ядро-оболочка) в потоке углеродно-гелиевой плазмы атмосферного и более высокого давления
Коллективы : "Функциональные наноматериалы и высокочистые вещества", Всероссийская молодёжная конференция с элементами научной школы для молодежи (4; 2012 ; окт. ; 1-5; Суздаль)
Место публикации : IV Всероссийская молодёжная конференция "Функциональные наноматериалы": сб. материалов. - М.: ИМЕТ РАН, 2012. - С. 365-366. - ISBN 978-5-4253-0478-0
Аннотация: In this paper we presented description installation, which we created for synthesis fullerenes, nanotubes and nanoparticles. We presented results which we obtained by carry out investigations with this substances
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Вид документа : Статья из сборника (однотомник)
Шифр издания :
Автор(ы) : Osipova I. V., Churilov G. N., Glushchenko G. A., Lopatin V. A., Vnukova N. G., Tomashevich Y. V.
Заглавие : The formation of higher and endohedral fullerenes in the plasma of high-frequency arc with low-frequency modulation under elevated helium pressure
Коллективы : "Advanced Carbon Nanostructures", International Conference
Место публикации : Int. Conf. "Adv. Carbon Nanostruct." (ACNS): Abstract of inv. lect. and contrib. papers. - St. Petersburg, 2013. - P.140
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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Glushchenko G. A., Leonova T. A., Kolonenko A. L., Dudnik A. I., Osipova I. V., Vnukova N. G., Nemtsev I. V., Zharkov S. M., Churilov G. N.
Заглавие : Synthesis of 6H-SiC single-crystal nanowires in a flow of carbon-silicon high-frequency arc plasma
Место публикации : Phys. Solid State: Pleiades Publishing, 2014. - Vol. 56, Is. 10. - P.2107-2111. - ISSN 1063-7834, DOI 10.1134/S106378341410014X. - ISSN 1090-6460
Примечания : Cited References: 34. - This study was supported by the National Academy of Sciences of Belarus and the Siberian Branch of the Russian Academy of Sciences within the framework of the Interdisciplinary Integration project no. 24.
Предметные рубрики: LARGE-SCALE SYNTHESIS
BETA-SIC NANOWIRES
FIELD-EMISSION PROPERTIES
CARBIDE NANOWIRES
NANORODS
GROWTH
NANOSTRUCTURES
FULLERENES
DISCHARGE
Аннотация: Silicon carbide 6H-SiC nanoparticles and nanowires were obtained in carbon-silicon high-frequency arc plasma plasma in a helium atmosphere at a pressure of 0.1-0.6 MPa. It was shown that 6H-SiC nanowires grow from the arc plasma, as well as from the vapor, according to the known mechanism of vapor-solid condensation on a cold surface covered with single-crystal silicon carbide nuclei. The content of silicon carbide nanowires in the condensate reached 60 wt %. The obtained single-crystal silicon 6H-SiC nanowires had the diameter of 15-18 nm and length of 200-600 nm.
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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Semenov A. P., Semenova I. A., Churilov G. N.
Заглавие : Stability of the C-C covalent bonds in fullerenes in the solid body-vapor structure during the thermodynamic action by a quasi-pulsed electron beam
Коллективы : Russian Foundation for Basic Research [12-08-98000-r_sibir'_a], program of basic research of the Siberian Branch, Russian Academy of Sciences [II.9.3.1]
Место публикации : Tech. Phys.: MAIK Nauka-Interperiodica / Springer, 2015. - Vol. 60, Is. 4. - P.610-613. - ISSN 1063, DOI 10.1134/S1063784215040258. - ISSN 10906525(eISSN)
Примечания : Cited References:12. - This work was supported by the Russian Foundation for Basic Research (project no. 12-08-98000-r_sibir'_a) and the program of basic research of the Siberian Branch, Russian Academy of Sciences (project no. II.9.3.1).
Предметные рубрики: FILMS
Аннотация: The explosive evaporation of a fullerene mixture in a vacuum of ∼10−2 Pa during the contraction of a 1-kW hollow electron beam into a spot on a substrate in a time of 0.1–1 s is considered. A comparative analysis of the Raman spectra and the absorption electron spectra of a starting fullerene mixture powder and the vapor condensates shows that the evaporation of C60 and C70 fullerenes proceeds without breaking C–C covalent bonds.
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Вид документа : Статья из сборника (однотомник)
Шифр издания :
Автор(ы) : Koravanets V. S., Vnukova N. G., Kolonenko A. L., Dubinina I. A., Churilov G. N., Guliaeva U. E.
Заглавие : Method of the quantitative express analysis of endohedral fullerenes
Коллективы : "Advanced carbon nanostructures", International conference
Место публикации : International Conference Advanced Carbon Nanostructures: abstracts of invited lectures & contributed papers. - 2015. - Ст.P1-09. - P.68
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Вид документа : Статья из сборника (выпуск продолж. издания)
Шифр издания :
Автор(ы) : Fedorov A. S., Kovaleva E. A., Lubkova T. A., Popov Z. I., Kuzubov A. A., Visotin M. A., Irle S.
Заглавие : Molecular dynamical modelling of endohedral fullerenes formation in plasma
Коллективы : International Scientific Conference on Radiation-Thermal Effects and Processes in Inorganic Materials
Место публикации : IOP Conf. Ser.: Mater. Sci. Eng. - 2016. - Vol. 110, Is. 1. - , DOI 10.1088/1757-899X/110/1/012078
Аннотация: The initial stages of fullerene and endohedral metallofullerene (EMF) synthesis in carbon-helium plasma at 1500 K and 2500 K have been simulated with quantum chemical molecular dynamics (MD) based on density-functional tight-binding (DFTB). The cases of formation of large (>100 atoms) sp2-carbon clusters with scandium atoms inside were observed. These clusters are considered as precursors of fullerenes or EMFs, and thus it is shown that formation of EMFs can be explained within the framework of »shrinking hot giant« mechanism. Also, the dependence of formation rates on plasma parameters, including temperature, buffer gas and metal atoms concentrations, has been studied.
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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Churilov G. N., Popov A. A., Vnukova N. G., Dudnik A. I., Glushchenko G. A., Samoylova N. A., Dubinina I. A., Gulyaeva U. E.
Заглавие : A method and apparatus for high-throughput controlled synthesis of fullerenes and endohedral metal fullerenes
Место публикации : Tech. Phys. Lett.: MAIK Nauka-Interperiodica / Springer, 2016. - Vol. 42, Is. 5. - P.475-477. - ISSN 10637850 (ISSN), DOI 10.1134/S1063785016050072
Примечания : Cited References: 9. - This work was supported by a grant of the Ministry of Science and Education of the Russian Federation, ID RFMEFI61314X0010, project no. 14.613.21.0010.
Предметные рубрики: Metallofullerenes
Plasma
Аннотация: A method for synthesis of carbon nanostructures in a high-frequency arc discharge in the flow of helium (3–4 L/min) is presented. It is shown that the plasma-chemical synthesis of fullerenes and endohedral metal fullerenes (EMFs) can be controlled by changing helium pressure in the chamber. Temperature and electron concentration along the line normal to the discharge axis decrease upon moving away from the axis to the periphery; the larger the pressure, the sharper is the decrease in these parameters. The optimal helium pressure of 98 kPa was found in obtaining the Gd@C82 EMF which corresponds to the maximal EMF yield of 5 wt %. © 2016, Pleiades Publishing, Ltd.
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10.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Fedorov A. S., Fedorov D. A., Kuzubov A. A., Avramov P. V., Nishimura Y., Irle S., Witek H. A.
Заглавие : Relative Isomer Abundance of Fullerenes and Carbon Nanotubes Correlates with Kinetic Stability
Разночтения заглавия :авие SCOPUS: Relative isomer abundance of fullerenes and carbon nanotubes correlates with kinetic stability
Место публикации : Phys. Rev. Lett.: AMER PHYSICAL SOC, 2011. - Vol. 107, Is. 17. - Ст.175506. - ISSN 0031-9007, DOI 10.1103/PhysRevLett.107.175506
Примечания : Cited References: 29. - S. I, P. V. A, and A. S. F gratefully acknowledge generous hospitality during their visits to Krasnoyarsk (S. I) and Fukui Institute for Fundamental Chemistry in Kyoto and Nagoya University (P. V. A and A. S. F) under support of the joint JSPS-RFBR travel grant 09-02-92107. This work was partially supported by National Science Council (grants NSC96-2113-M009-022-MY3 and NSC96-2113-M009-011-MY3) and Ministry of Education of Taiwan (MOE-ATU project), as well as by the JAEA Research fellowship (P. V. A). We thank the Institute of Computer Modeling (Siberian Division of RAS) and the Joint Supercomputer Center RAS for opportunity to use cluster computers for performing all calculations.
Предметные рубрики: CHEMICAL MOLECULAR-DYNAMICS
C-60
BUCKMINSTERFULLERENE
MECHANISM
ROAD
Ключевые слова (''Своб.индексиров.''): carbon nanostructures--kinetic factors--kinetic stability--thermal vibration--carbon nanotubes--fullerenes--isomers--kinetics
Аннотация: A methodology to evaluate the kinetic stability of carbon nanostructures is presented based on the assumption of the independent and random nature of thermal vibrations. The kinetic stability is directly correlated to the cleavage probability for the weakest bond of a given nanostructure. The application of the presented method to fullerenes and carbon nanotubes yields clear correlation to their experimentally observed relative isomer abundances. The general and simple formulation of the method ensures its applicability to other nanostructures for which formation is controlled by kinetic factors.
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