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Karpov, S. V.
Simulation of conditions for fabrication of optical nanowaveguides in the form of chains of spherical metal nanoparticles by electrostatic functionalization of the process substrate / S. V. Karpov, I. L. Rasskazov // Colloid J. - 2013. - Vol. 75, Is. 3. - P. 279-288, DOI 10.1134/S1061933X13030083 . - ISSN 1061-933X
Кл.слова (ненормированные):
Deposition of metals -- Electrical parameter -- Experimental conditions -- Nonuniform electric field -- Ordered structures -- Selective deposition -- Single-domain structure -- Transmission property -- Deposition -- Electric fields -- Mathematical models -- Metal nanoparticles -- Photoexcitation -- Plasmons -- Sols -- Substrates
Аннотация: A method is proposed for electrostatic functionalization of substrates used to prepare ordered structures composed of closely spaced plasmon-resonant nanoparticles. The method ensures selective deposition of nanoparticles from the bulk of a colloidal system onto the substrates. This method is based on placing a metal nanotemplate of a required configuration at the opposite side of a substrate, with an electric potential being applied to the template. A mathematical model is developed to ensure that the system parameters responsible for the deposition of metal nanoparticles into ordered single-domain structures on the substrate from a bulk sol in a nonuniform electric field generated by the nanotemplate correspond to the real experimental conditions. Since the degree of imperfection of the synthesized chains governs the applicability of these structures to transmission of the optical excitation at the frequency of the surface plasmon of the particles, the dependence of the degree of imperfection on the physicochemical and electrical parameters of the system is studied using the Brownian-dynamics model. The calculations of the spectral and transmission properties of nanowaveguides of this type are exemplified. В© 2013 Pleiades Publishing, Ltd.

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Публикация на русском языке Моделирование условий синтеза оптических нановолноводов из цепочек сферических металлических наночастиц методом электростатической функционализации технологической подложки. - [S. l. : s. n.]

Держатели документа:
Russian Acad Sci, Siberian Branch, Kirenskii Inst Phys, Krasnoyarsk 660036, Russia
Siberian Fed Univ, Krasnoyarsk 660028, Russia;

Доп.точки доступа:
Рассказов, Илья Леонидович; Rasskazov, I. L.; Карпов, Сергей Васильевич
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    Dynamics of self-organized aggregation of resonant nanoparticles in a laser field / V. V. Slabko [et al.] // Appl. Phys. B. - 2014. - Vol. 117, Is. 1. - P. 271-278, DOI 10.1007/s00340-014-5831-0. - Cited References: 30. - This research is partially supported by Grant of the Ministry of Education and Science of the Russian Federation for Siberian Federal University, by SB RAS Grant 24.31, and by RFBR Research Project No. 14-02-00219 A. . - ISSN 0946-2171. - ISSN 1432-0649
   Перевод заглавия: Динамика самоорганизованной агрегации резонансных наночастиц в лазерном поле
Рубрики:
PHOTOSTIMULATED AGGREGATION
   SILVER
   PRINCIPLES
   PARTICLES
   SPECTRA
   SOLS
Аннотация: Self-organized aggregation of nanoparticles in external resonant laser field is considered using Brownian dynamics model. Formation probabilities are calculated for the pair of particles in dependence on laser wavelength and mutual orientation of particles. Times required for aggregation are calculated. Possibility of efficient aggregation using pulsed laser is deduced.

Держатели документа:
Siberian Fed Univ, Krasnoyarsk 660041, Russia
L.V. Kirenskii Inst Phys, Krasnoyarsk 660036, Russia

Доп.точки доступа:
Slabko, V. V.; Слабко, Виталий Васильевич; Tsipotan, A. S. ; Aleksandrovsky, A. S.; Александровский, Александр Сергеевич; Slyusareva, E. A.; Grant of the Ministry of Education and Science of the Russian Federation for Siberian Federal University; SB RAS Grant [24.31]; RFBR [14-02-00219 A]
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Preparation, structure and magnetic properties of synthetic ferrihydrite nanoparticles / S. V. Stolyar [et al.] // J. Phys.: Conf. Ser. - 2018. - Vol. 994: 3rd International School and Workshop on Complex and Magnetic Soft Matter Systems: Structure and Physico - Mechanical Properties, CMSMS 2017 (28 - 30 June 2017), Is. 1. - Ст. 012003, DOI 10.1088/1742-6596/994/1/012003. - Cited References: 15. - The reported study was funded by Russian Foundation for Basic Research and Krasnoyarsk region according to the research project № 17-43-240527 and Russian Foundation for Basic Research project № 16-03-00969. Support by the Special Program for Siberian Federal University of the Ministry of Education and Science of the Russian Federation is acknowledged
Кл.слова (ненормированные):
Magnetic properties -- Mechanical properties -- Nanoparticles -- Powders -- Sols -- Solutions
Аннотация: Superparamagnetic ferrihydrite powders with average nanoparticle sizes of 2.5 nm produced by the chemical deposition method. Static and dynamic magnetic properties are measured. As a result of ultrasonic treatment in the cavitation regime of suspensions of ferrihydrite powders in a solution of the albumin protein, the Fe ions are reduced to the metallic state. A sol of ferrihydrite nanoparticles is prepared in an aqueous solution of arabinogalactan polysaccharide.

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Держатели документа:
Siberian Federal University, Krasnoyarsk, Russian Federation
Kirensky Institute of Physics, SB RAS, Krasnoyarsk, Russian Federation
International Scientific Centre for Organism Extreme States Research Attached Presidium of KSC, SB RAS, Krasnoyarsk, Russian Federation
Institute of Biophysics, SB RAS, Krasnoyarsk, Russian Federation

Доп.точки доступа:
Stolyar, S. V.; Столяр, Сергей Викторович; Yaroslavtsev, R. N.; Ярославцев, Роман Николаевич; Bayukov, O. A.; Баюков, Олег Артемьевич; Balaev, D. A.; Балаев, Дмитрий Александрович; Krasikov, A. A.; Красиков, Александр Александрович; Iskhakov, R. S.; Исхаков, Рауф Садыкович; Vorotynov, A. M.; Воротынов, Александр Михайлович; Ladygina, V. P.; Purtov, K. V.; Volochaev, M. N.; Волочаев, Михаил Николаевич; International School and Workshop on Complex and Magnetic Soft Matter Systems: Structure and Physico - Mechanical Properties(3 ; 2017 ; 28 - 30 June ; Dubna, Russian Federation)
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Anisometric iron oxide-based nanoparticles and sols based on them: Preparation and properties / S. V. Stolyar [et al.] // J. Supercond. Novel Magn. - 2019. - Vol. 32, Is. 4. - P. 971–975, DOI 10.1007/s10948-018-4784-7. - Cited References: 18. - The reported study was carried out with the financial support of the Russian Foundation for Fundamental Research, the Government of the Krasnoyarsk Territory, and the Krasnoyarsk Territory Fund for Support of Scientific and Technical Activity in the framework of scientific Projects No. 18-43-243003, No. 17-42-240080 and No. 17-43-240527. The work is supported by the Special Program of the Ministry of Education and Science of the Russian Federation for the Siberian Federal University. . - ISSN 1557-1939
Кл.слова (ненормированные):
Nanoparticles and nanorods -- Chemical preparation -- Superparamagnetism
Аннотация: We have synthesized magnetic powders of the magnetite-maghemite series by the chemical reaction of the FeSO4 iron salt and the natural arabinogalactan polysaccharide. These particles with a high magnetization value (∼ 300 Gs) represent a mixture of spherical particles and nanorods. Particles of a spherical shape (diameter of ∼ 5–6 nm) show a superparamagnetic behavior at room temperature, while rods with a diameter of ∼ 5 nm and a length of 30 nm are magnetic. We have prepared sol samples based on the nanoparticle aqueous solution of arabinogalactan. Our results on the magnetism of the circular dichroism (MCD) on sol are consistent with the of Mössbauer spectroscopy data.

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

Доп.точки доступа:
Stolyar, S. V.; Bayukov, O. A.; Баюков, Олег Артемьевич; Chekanova, L. A.; Чеканова, Лидия Александровна; Gerasimova, Y. V.; Герасимова, Юлия Валентиновна; Sokolov, A. Е.; Соколов, Алексей Эдуардович; Iskhakov, R. S.; Исхаков, Рауф Садыкович; Yaroslavtsev, R. N.; Ярославцев, Роман Николаевич; Volochaev, M. N.; Волочаев, Михаил Николаевич; Artemyeva, A. S.; Cheremiskina, E. V.; Knyazev, Yu. V.; Князев, Юрий Владимирович
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    Влияние реакционных условий на размер наночастиц серебра в концентрированных золях Carey Lea / С. А. Воробьев, М. Н. Лихацкий, А. С. Романченко [и др.] // Журн. СФУ. Химия. - 2020. - Т. 13, № 3. - С. 372-384 ; J. Sib. Fed. Univ. Chem., DOI 10.17516/1998-2836-0190. - Библиогр.: 34. - Работа выполнена при финансовой поддержке Российского научного фонда, грант No 18-73-00142 . - ISSN 1998-2836. - ISSN 2313-6049
   Перевод заглавия: The Influence of the Reaction Conditions on the Size of Silver Nanoparticles in Carey Lea's Concentrated Sols

РУБ Chemistry, Multidisciplinary
Рубрики:
AG NANOPARTICLES
   CITRATE
   AGGREGATION
   SURFACE
   STABILITY
   KINETICS
Кл.слова (ненормированные):
наночастицы серебра -- концентрированные золи -- влияние реакционных условий -- цитрат-ион -- silver nanoparticles -- concentrated sols -- influence of reaction conditions -- citrate ion
Аннотация: В данной работе был изучен процесс восстановления растворов Ag (I) цитратными комплексами Fe (II), который позволяет получать наночастицы серебра с высокой стабильностью и концентрацией более 60 г/л. В ходе работы было установлено влияние скорости введения, скорости перемешивания, концентрации реагентов, рН среды и некоторых постсинтетических операций на средний размер наночастиц. Показано, что снижение концентрации Ag (I) и повышение концентрации стабилизатора, доведение рН реакционной среды до 7 позволяют получать наиболее мелкие и однородные частицы. В результате были найдены оптимальные условия, которые дали возможность уменьшить размер частиц и вместе с тем снизить концентрацию реактивов на 33 %. По данным РФЭС, ПЭМ, DLS и ИК были получены наночастицы металлического серебра с размером 6.5±1.8 нм, стабилизированные продуктом частичного распада цитрат-иона.
The reaction of reduction solution of Ag (I) by Fe (II) citrate complex was studied herein. This allows you to receive silver nanoparticles with high stability with a concentration above 60 g/l. It was determined that the nanoparticles size depends on the injection rate, mixing rate, reagent concentration, pH and some post-synthetic operations on the average size of nanoparticles. It was shown that decreasing the concentration of Ag (I) and increasing the concentration of stabilizer also bringing pH to 7 lead to small and uniform particles. Optimal conditions were found that made it possible to reduce particle size and reduce the concentration of reagents by 33 % in the results. According to XPS, TEM, DLS and FTIR datas, nanoparticles of metallic silver with a size of 6.5±1.8 nm were obtained, which stabilized by the product of partial decay of the citrate ion.

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Держатели документа:
Институт химии и химической технологии ФИЦ «Красноярский научный центр СО РАН», Российская Федерация, Красноярск
Сибирский федеральный университет, Российская Федерация, Красноярск
Институт физики им. Киренского, КНЦ СО РАН, Российская Федерация, Красноярск
Сибирский государственный университет науки и технологий им. М.Ф. Решетнева, Российская Федерация, Красноярск

Доп.точки доступа:
Воробьев, С. А.; Лихацкий, М. Н.; Романченко, А. С.; Иваненко, Т. Ю.; Машарова, Д. А.; Волочаев, Михаил Николаевич; Volochaev, M. N.; Михлин, Ю. Л.; RUSSIAN SCIENCE FOUNDATIONRussian Science Foundation (RSF) [18-73-00142]

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Synthesis, Properties, and in vivo Testing of Biogenic Ferrihydrite Nanoparticles / S. V. Stolyar, V. P. Ladygina, A. V. Boldyreva [et al.] // Bull. Russ. Acad. Sci. Phys. - 2020. - Vol. 84, Is. 11. - P. 1366-1369, DOI 10.3103/S106287382011026X. - Cited References: 12. - The study was supported by the Russian Foundation for Basic Research, the Government of the Krasnoyarsk krai, the Krasnoyarsk Regional Fund for the Support of Scientific and Technical Activities (project no. 19-42-240012 r_a “Magnetic Resonance in Ferrihydrite Nanoparticles: Effects Associated with the Core–Shell Structure”), and the grant of the President of the Russian Federation for state support of young Russian scientists—Candidates of sciences no. MK-1263.2020.3 . - ISSN 1062-8738
Кл.слова (ненормированные):
Bacteria -- Nanoparticles -- Sols -- Ferrihydrites -- Functional activities -- In-vivo -- Klebsiella oxytoca -- Laboratory animals -- Morphological description
Аннотация: A sol containing biogenic ferrihydrite nanoparticles is obtained by cultivating Klebsiella oxytoca microorganisms. Data on the physical properties of the biogenic ferrihydrite and its effect on the organism of laboratory animals are obtained using a model of experimental hemolytic anemia, according to indicators of the functional activity of erythrocytes and morphological descriptions of organs.

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Публикация на русском языке Синтез, свойства и тестирование биогенных наночастиц ферригидрита in vivo [Текст] / С. В. Столяр, В. П. Ладыгина, А. В. Болдырева [и др.] // Изв. РАН. Сер. физич. - 2020. - Т. 84 № 11. - С. 1601-1604

Держатели документа:
Kirensky Institute of Physics, Krasnoyarsk Scientific Center, Siberian Branch, Russian Academy of Sciences, Krasnoyarsk, 660036, Russian Federation
Krasnoyarsk Scientific Center, Siberian Branch, Russian Academy of Sciences, Krasnoyarsk, 660036, Russian Federation
Siberian Federal University, Krasnoyarsk, 660041, Russian Federation
Astrakhan State University, Astrakhan, 414056, Russian Federation
Al-Qasim Green University, College of Biotechnology, Babylon, 00964, Iraq

Доп.точки доступа:
Stolyar, S. V.; Столяр, Сергей Викторович; Ladygina, V. P.; Boldyreva, A. V.; Kolenchukova, O. A.; Vorotynov, A. M.; Воротынов, Александр Михайлович; Bairmani, M. S.; Yaroslavtsev, R. N.; Ярославцев, Роман Николаевич; Iskhakov, R. S.; Исхаков, Рауф Садыкович
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    Synthesis and characterization of nanoscale composite particles formed by 2D layers of Cu-Fe sulfide and Mg-based hydroxide / Y. L. Mikhlin, R. V. Borisov, S. A. Vorobyev [et al.] // J. Mater. Chem. A. - 2022. - Vol. 10, Is. 17. - P. 9621-9634, DOI 10.1039/d2ta00877g. - Cited References: 84. - This research was supported by the Russian Foundation for Basic Research, Krasnoyarsk Territory Administration and Krasnoyarsk Territory Science Foundation, project 20-43-242903. Facilities of the Krasnoyarsk Regional Center of Research Equipment of Federal Research Center “Krasnoyarsk Science Center SB RAS” were employed in the work . - ISSN 2050-7488
   Перевод заглавия: Синтез и исследование наноразмерных композитных частиц, образованных двумерными слоями сульфида Cu-Fe и гидроксида на основе Mg
Кл.слова (ненормированные):
Binary alloys -- Copper compounds -- Electron energy levels -- Electron energy loss spectroscopy -- Electron scattering -- Light absorption -- Light scattering -- Magnesium compounds -- Near infrared spectroscopy -- Paramagnetism -- Sols -- Sulfur compounds -- X-ray photoelectron spectroscopy
Аннотация: We introduce here a multifunctional material composed of alternating atomic sulfide sheets close to the composition of CuFeS2 and Mg-based hydroxide ones (valleriite), which are assembled due to their electric charges of opposite sign. Valleriite particles 50-200 nm in lateral size and 10-20 nm in thickness were synthesized via a simple hydrothermal pathway using various concentrations of precursors and dopants, and examined with XRD, TEM, EDS, X-ray photoelectron spectroscopy, reflection electron energy loss spectroscopy (REELS), Mossbauer, Raman and UV-vis-NIR spectroscopies, and magnetization, dynamic light scattering, and zeta potential measurements. The electronic, magnetic and optical characteristics are found to be critically dependent on the charge (electron density) at the narrow-gap sulfide layers containing Cu+ and Fe3+ cations, and can be tuned via the composition of the hydroxide part. Particularly, substitution of Mg2+ with Al3+ increases the negative charge of the hydroxide layers and reduces the content of Fe3+-OH centers (10-45% of total iron); the effects of Cr and Co dopants entering both layers are more complicated. Mossbauer doublets of paramagnetic Fe3+ detected at room temperature transform into several Zeeman sextets at 4.2 K; the hyperfine fields up to 500 kOe and complex magnetic behavior, but not pure paramagnetism or antiferromagnetism, were observed for valleriites with the higher positive charge of the sulfide sheets, probably due to the depopulation of the minority-spin 3d states of S-bonded Fe3+ ions. Aqueous colloids of valleriite show optical absorption at 500-750 nm, which, along with the peaks at the same energies in REELS, may arise due to quasi-static dielectric resonance involving the vacant Fe 3d band and being dependent on the composition of both layers too. These and other findings call attention to valleriites as a new rich family of 2D materials for a variety of potential applications.

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Держатели документа:
Institute of Chemistry and Chemical Technology, Krasnoyarsk Science Center of the Siberian Branch of the Russian Academy of sciences, Akademgorodok, 50/24, Krasnoyarsk, 660036, Russian Federation
Kirensky Institute of Physics, Krasnoyarsk Science Center of the Siberian Branch of the Russian Academy of sciences, Akademgorodok 50/38, Krasnoyarsk, 660036, Russian Federation
Siberian Federal University, Svobodny av. 79, Krasnoyarsk, 660041, Russian Federation
Federal Research Center “Krasnoyarsk Science Center of the Siberian Branch of the Russian Academy of sciences”, Akademgorodok, 50, Krasnoyarsk, 660036, Russian Federation

Доп.точки доступа:
Mikhlin, Y. L.; Borisov, R. V.; Vorobyev, S. A.; Tomashevich, Y. V.; Romanchenko, A. S.; Likhatski, M. N.; Karacharov, A. A.; Bayukov, O. A.; Баюков, Олег Артемьевич; Knyazev, Yu. V.; Князев, Юрий Владимирович; Velikanov, D. A.; Великанов, Дмитрий Анатольевич; Zharkov, S. M.; Жарков, Сергей Михайлович; Krylov, A. S.; Крылов, Александр Сергеевич; Krylova, S. N.; Крылова, Светлана Николаевна; Nemtsev, I. V.; Немцев, Иван Васильевич
}
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