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Application of the luminous bacterium Photobacterium phosphoreum for toxicity monitoring of selenite and its reduction to selenium(0) nanoparticles / A. V. Zenkov, E. S. Sushko, O. A. Mogilnaya [et al.] // Spectrochim. Acta - A: Mol. Biomol. Spectrosc. - 2025. - Vol. 325. - Ст. 125078, DOI 10.1016/j.saa.2024.125078. - Cited References: 63. - This research was funded by the Russian Science Foundation and Krasnoyarsk Territory and Krasnoyarsk Regional Fund of Science, grant No. 24-24-20001. - We acknowledge A.V. Raikov (School of Fundamental Biology and Biotechnology, Siberian Federal University, Krasnoyarsk, Russia) for spectral measurements; Dr. A.B. Sarangova (School of Fundamental Biology and Biotechnology, Siberian Federal University, Krasnoyarsk, Russia) for methodology of bacterial cultivation; Y.V. Chugaeva (Institute of Biophysics SB RAS, Federal Research Center "Krasnoyarsk Science Center SB RAS", 660036 Krasnoyarsk, Russia) for support of the collection of bacteria and their cultivation. The SEM and TEM studies were performed in Krasnoyarsk Regional Center of Research Equipment of Federal Research Center "Krasnoyarsk Science Center SB RAS" . - ISSN 1386-1425. - ISSN 1873-3557
Кл.слова (ненормированные):
Luminous marine bacteria -- Sodium selenite -- Toxicity -- Reactive oxygen species -- Biotransformation -- Selenium nanoparticles
Аннотация: Luminous marine bacteria are traditionally used as a bioassay due to the convenience and high rate of registering the intensity of their physiological function – luminescence. This study aimed to develop the application of Photobacterium phosphoreum in traditional and novel fields – toxicity monitoring and biotechnology. We demonstrated (1) effects of selenite ions on bioluminescence, and (2) biotransformation of selenite to selenium(0) in the form of nanoparticles. The effects of selenite (SeO32−) on the intensity of bacterial bioluminescence were studied, and its dependencies on exposure time and concentration of Na2SeO3 were analyzed. Bioluminescence activation and inhibition were revealed; dose–effect dependencies corresponded to the hormesis model. The toxicity of SeO32− was characterized by an effective concentration of 10−3 M. Effects of SeO32− on reactive oxygen species (ROS) in bacterial suspensions were studied. High positive correlations were found between the bioluminescence intensity and ROS content, which indicates the decisive role of ROS and associated redox processes in the bioeffects of selenite ions. Scanning and transmission electron microscopy revealed the presence of nano-structures in the bacteria exposed to selenite. The energy dispersion spectrum detected a high content of selenium in the nanoparticles. The particle size distribution depended on Na2SeO3 concentration; maxima of the distribution varied within 45–55 nm.

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Держатели документа:
School of Fundamental Biology and Biotechnology, Siberian Federal University, 660041 Krasnoyarsk, Russia
Institute of Biophysics SB RAS, Federal Research Center “Krasnoyarsk Science Center SB RAS”, 660036 Krasnoyarsk, Russia
Institute of Physics SB RAS, Federal Research Center “Krasnoyarsk Science Center SB RAS”, 660036 Krasnoyarsk, Russia
Institute of Biochemistry and Physiology of Plants and Microorganisms, Saratov Federal Scientific Center of the Russian Academy of Sciences, 410049 Saratov, Russia

Доп.точки доступа:
Zenkov, A. V.; Sushko, E. S.; Сушко, Екатерина Сергеевна; Mogilnaya, O. A.; Volochaev, M. N.; Волочаев, Михаил Николаевич; Shabanov, A. V.; Шабанов, Александр Васильевич; Kamnev, A. A.; Tugarova, A. V.; Kudryasheva, N. S.
}
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Studying the ferromagnetic resonance heating of an isotropic superparamagnet by the example of biogenic ferrihydrite nanoparticles / S. V. Stolyar, O. A. Li, A. M. Vorotynov [et al.] // Bull. Russ. Acad. Sci.: Phys. - 2024. - Vol. 88, Is. 4. - P. 536-539, DOI 10.1134/S106287382370627X. - Cited References: 10 . - ISSN 1062-8738. - ISSN 1934-9432
Аннотация: Ferrihydrite nanoparticles are synthesized and characterized. The dependences of heating of powders are studied upon pumping by a high-frequency electromagnetic field on a dc magnetic field. It is shown that the experimental dependence of the temperature of particles on a dc magnetic field is consistent with the theory of ferromagnetic resonance for an isotropic superparamagnet.

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Держатели документа:
Federal Research Center “Krasnoyarsk Science Center,” Siberian Branch, Russian Academy of Sciences, 660036, Krasnoyarsk, Russia
Siberian Federal University, 660041, Krasnoyarsk, Russia
Kirensky Institute of Physics, Federal Research Center “Krasnoyarsk Science Center,” Siberian Branch, Russian Academy of Sciences, 660036, Krasnoyarsk, Russia

Доп.точки доступа:
Stolyar, S. V.; Столяр, Сергей Викторович; Li, O. A.; Vorotynov, A. M.; Воротынов, Александр Михайлович; Velikanov, D. A.; Великанов, Дмитрий Анатольевич; Maksimov, N. G.; Iskhakov, R. S.; Исхаков, Рауф Садыкович; Ladygina, V. P.; Shokhrina, A. O.
}
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Synthesis and study of superhigh-concentrated organosols of silver nanoparticles / S. A. Vorobyev, M. Yu. Flerko, S. A. Novikova [et al.] // Colloid J. - 2024. - Vol. 86, Is. 2. - P. 208-217, DOI 10.1134/S1061933X23601294. - Cited References: 33. - The work was carried out with the financial support of the basic project FWES-2021-0014 of the Institute of Chemistry and Chemical Technology, Siberian Branch, Russian Academy of Sciences, and the Federal Program "Priority 2030" using the equipment of the Krasnoyarsk regional center for collective use of the Federal Research Center Krasnoyarsk Scientific Center, Siberian Branch, Russian Academy of Sciences . - ISSN 1061-933X. - ISSN 1608-3067
Кл.слова (ненормированные):
silver nanoparticles (NPs) -- concentrated silver organosols -- phase transfer of nanoparticles -- X-ray photoelectron spectroscopy (XPS) -- transmission electron microscopy (TEM) -- conductive silver films
Аннотация: Due to their unique properties, organosols of silver nanoparticles are widely used in optical and semiconductor devices, to produce electrically and thermally conductive films, as catalysts, antibacterial materials, etc. This work proposes a simple and highly productive method for the preparation of silver organosols, which have a metal concentration as high as 1800 g/L and contain spherical nanoparticles with low polydispersity and a median size of 9.1 nm. The method consists in the initial preparation of silver nanoparticle hydrosols with a concentration of higher than 30 g/L followed by the transfer of the NPs into an organic phase of o-xylene. A set of physical research methods has been employed to study the regularities of the extraction of silver nanoparticles with o-xylene in the presence of cetyltrimethylammonium bromide (CTAB) and ethanol and to determine the optimal process conditions, under which the extraction degree is as high as 62.5%. It has been found that bromine anions contained in CTAB molecules cause the aggregation of some amount of silver nanoparticles with the formation of silver metal sediment in the aqueous phase. According to X-ray photoelectron spectroscopy data, the sediment contains bromide ions (up to 4 at %) on the particle surface. Organosols synthesized under optimal conditions are stable for more than 7 months and withstand repeated cycles of drying and redispersing. Silver organosols have been used to obtain metal films with an electrical conductivity of about 68 500 S/cm, which increases to 412 000 and 509 500 S/cm (87.8% of the electrical conductivity of bulk silver) after thermal treatment at 150 and 250°C, respectively.

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Держатели документа:
Institute of Chemistry and Chemical Technology, Siberian Branch, Russian Academy of Sciences, 660036, Krasnoyarsk, Russia
Siberian Federal University, 660041, Krasnoyarsk, Russia
Kirenskii Institute of Physics, Siberian Branch, Russian Academy of Sciences, 660036, Krasnoyarsk, Russia
Tomsk National Research State University, 634050, Tomsk, Russia

Доп.точки доступа:
Vorobyev, S. A.; Flerko, M. Yu.; Novikova, S. A.; Mazurova, E. V.; Tomashevich, Ye. V.; Likhatski, M. N.; Saikova, S. V.; Samoilo, A. S.; Zolotovsky, N. A.; Золотовский, Н. А.; Volochaev, M. N.; Волочаев, Михаил Николаевич
}
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Adsorption properties and catalytic activity of Fe3O4-Ag nanostructures / O. S. Ivanova, Ch.-R. Lin, I. S. Edelman [et al.] // Appl. Surf. Sci. - 2024. - Vol. 665. - Ст. 160236, DOI 10.1016/j.apsusc.2024.160236. - Cited References: 48. - The work is supported by the Russian Science Foundation (project no. 23-22-10025, https://rscf.ru/project/ 23-22-10025/) and by the Krasnoyarsk Regional Fund of Science and Technology Support. The electron microscopy and EDS investigations were conducted in the SFU Joint Scientific Center. Magnetic investigations were carried out in the Krasnoyarsk Regional Center of Research Equipment of Federal Research Center "Krasnoyarsk Science Center SB RAS" . - ISSN 0169-4332. - ISSN 1873-5584
Кл.слова (ненормированные):
FeO-Ag nanostructures -- Nano-adsorbents -- Water purification methods -- Catalytic activity of nanoparticles
Аннотация: The morphology and magnetic properties as well as adsorption capacity and catalytic activity of Fe3O4-Ag nanoparticles synthesized by the solvothermal method were studied in dependence on the duration of the thermolysis process (3, 6, and 8 h). X-ray diffraction, transmission electron microscopy, and energy-dispersive spectroscopy measurements showed that the morphology of nanoparticles changed strongly as the duration of thermolysis increased. At 6 and 8 h duration, Fe3O4 nanocrystals grow and assemble into porous spherical globules with an Ag core (samples 2 and 3). These samples demonstrate high magnetization value and very low coercivity. The adsorption capacity of nanoparticles was studied with respect to two organic dyes: cationic methylene blue (MB) and anionic Congo red (CR). The particles showed preferential adsorption of the cationic dye. High catalytic activity towards four dyes: MB, methyl orange (MO), CR, and Rhodamine C (RhC) at the presence of NaBH4 is the remarkable property of these samples. The rate constant of the catalytic reaction was 1.4 min−1. Simultaneous exposure of CR and MO dyes to nanoparticles and NaBH4 caused their irreversible 100 % degradation while in the case of MB and RhC, a transition to their leuco form occurred.

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Держатели документа:
Kirensky Institute of Physics, Federal Research Center KSC Siberian Branch, Russian Academy of Sciences, Krasnoyarsk 660036, Russia
Siberian Federal University, Krasnoyarsk 660041, Russia
Department of Applied Physics, National Pingtung University, Pingtung City 90003, Taiwan
Institute of Chemistry and Chemical Technology, Federal Research Center KSC Siberian Branch, Russian Academy of Sciences, Krasnoyarsk 660036, Russia

Доп.точки доступа:
Ivanova, O. S.; Иванова, Оксана Станиславовна; Lin, Chun-Rong; Edelman, I. S.; Эдельман, Ирина Самсоновна; Svetlitsky, E. S.; Светлицкий, Евгений Сергеевич; Sokolov, A. Е.; Соколов, Алексей Эдуардович; Zharkov, S. M.; Жарков, Сергей Михайлович; Sukhachev, A. L.; Сухачев, Александр Леонидович; Vorobyev, S. A.; Petrov, D. A.; Петров, Дмитрий Анатольевич; Lin, En-Szu
}
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Fenton reaction-driven pro-oxidant synergy of ascorbic acid and iron oxide nanoparticles in MIL-88B(Fe) / L. Bondarenko, R. Baimuratova, A. Dzeranov [et al.] // New J. Chem. - 2024. - Vol. 48, Is. 22. - P. 10142-10160, DOI 10.1039/D4NJ00963K. - Cited References: 94. - This research was funded by the Russian Science Foundation, grant number 22-73-10222. XPS spectra of the FeO-AA MOF sample were recorded on the equipment of the shared core facilities "Center of physical and physicochemical methods of analysis, investigations of properties and characteristics of surface, nanostructures, materials and products" of the Udmurt Federal Research Center of UB RAS. The Mossbauer analysis was performed in accordance with the state order of Lomonosov Moscow State University "Solving of problems of nuclear energy and environmental safety, as well as diagnostics of materials using ionizing radiation" (project no. 122030200324-1) . - ISSN 1144-0546. - ISSN 1369-9261
Аннотация: MIL-88B, a promising Fe-based 3D porous metal–organic framework (MOF) catalyst for the Fenton reaction, requires modifications to enhance its pro-oxidant activity and enable magnetic control of the sample. This study reports the successful modification of MIL-88B with iron oxide (Fe3O4) and ascorbic acid (AA). The characterization of the crystal structure and morphology of the Fe3O4–AA MOF sample using X-ray diffraction, Raman and Mossbauer spectroscopy, and scanning electron microscopy revealed that AA facilitated the formation of magnetite with a composition approaching a stoichiometry of Fe2.96O4 while preserving the MOF structure. Specifically, in the presence of hydrogen peroxide (H2O2), Fe3O4–AA–MOF exhibited a 3-fold increase in the Fenton reaction rate for methylene blue degradation compared to the conventional homogeneous system at pH 4.5. Furthermore, Fe3O4–AA–MOF retained the antibacterial properties of AA, as evidenced by its ability to increase reactive oxygen species in luminescent marine bacterium Photobacterium phosphoreum at low concentrations while exhibiting moderate cytotoxicity. The enhanced pro-oxidant activity of the Fe3O4–AA–MOF/H2O2 system is attributed to an AA-promoted surface Fe2+/Fe3+ cycle. A possible mechanism for this system is proposed.

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Moscow Aviation Institute (National Research University), Moscow, Russia
Sklifosovsky Research Institute for Emergency Medicine, Moscow, Russia
Federal Research Center of Problems of Chemical Physics and Medicinal Chemistry, Russian Academy of Sciences, Chernogolovka, Moscow region, Russia
Department of Chemistry, Lomonosov Moscow State University, Moscow, Russia
Institute of Biophysics SB RAS, Federal Research Center “Krasnoyarsk Science Center SB RAS”, 660036 Krasnoyarsk, Russia
Institute of Physics SB RAS, Federal Research Center “Krasnoyarsk Science Center SB RAS”, 660036 Krasnoyarsk, Russia
Siberian Federal University, 660041 Krasnoyarsk, Russia
Udmurt Federal Research Center of UB RAS, Izhevsk, Russia

Доп.точки доступа:
Bondarenko, L.; Baimuratova, R.; Dzeranov, A.; Pankratov, D.; Kicheeva, A.; Sushko, E.; Сушко, Екатерина Сергеевна; Kudryasheva, N.; Valeev, R.; Tropskaya, N.; Dzhardimalieva, G.; Kydralieva, K.
}
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Fe3O4/Au nanocomposites: Characterization and cytotoxicity effects in vitro / R. N. Yaroslavtsev, A. V. Tyumentseva, D. A. Velikanov [et al.] // Mater. Chem. Phys. - 2024. - Vol. 322. - Ст. 129524, DOI 10.1016/j.matchemphys.2024.129524. - Cited References: 44 . - ISSN 0254-0584. - ISSN 1879-3312
Кл.слова (ненормированные):
Magnetic nanoparticles -- Magnetite -- Gold nanoparticles -- Cytotoxicity
Аннотация: Magnetic nanocomposites containing iron oxide and gold components take great attention last years because of their relative biocompatibility and the ability to combine the magnetic properties of iron and the chemical bonding properties of gold for the possible drug delivery or diagnostics for various diseases. However, such particles have some toxicity to living cells, and the effect depends on many factors, including size, shape, the ratio of components in the composites, and the type of cells affected. And thus, the search for compositions and technologies for producing iron-gold particles with improved properties and reduced cytotoxicity remains relevant. The aim of the study was to synthesize and characterize Fe3O4/Au nanocomposites and evaluate their influence on living cells using the example of cell line HEK293. Fe3O4 nanoparticles (NPs) were synthesized by co-precipitation of Fe2+/Fe3+ water solution in alkaline conditions and then boiled with HAuCl4 in 0.1 M sodium citrate. The NPs properties were estimated by transmission electron microscopy (TEM), vibration magnetometry and ferromagnetic resonance (FMR). According to magnetometric measurements, nanoparticles are mainly in a superparamagnetic state. By fitting magnetization curves, the magnetic characteristics of nanoparticles were determined: saturation magnetization (59.3 emu/g) and magnetic anisotropy constant (K = 0.86·105 erg/cm3). The average particle size estimated from magnetic measurements was 8.7 nm. Considering the presence of a magnetically dead layer, this is in good agreement with the TEM results. The temperature dependence of the FMR linewidth was analyzed using two models. As a result, the parameters MSV and K/MS were determined. The models used showed good agreement. The values of the anisotropy constant (K = 1.06·105 erg/cm3) and the average particle size (6.8 nm) are estimated. The effect of the NPs on the HEK293 cells was studied by MTT-assay, flow cytometry and RT-PCR. The exposure with the NPs lead to a significant decrease of cell metabolic activity in HEK293 cell culture, but this effect was not accompanied by cell death. It was shown that the expression of antioxidant enzymes SOD1 and GPX1 was reduced at the mRNA stage. So the NPs synthesized may affect gene expression and metabolism of HEK293 cells, but this does not have fatal consequences for cell viability.

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Держатели документа:
Krasnoyarsk Science Center, Federal Research Center KSC SB RAS, Akademgorodok 50, Krasnoyarsk, 660036, Russia
Kirensky Institute of Physics, Federal Research Center KSC SB RAS, Akademgorodok 50, bld. 38, Krasnoyarsk, 660036, Russia

Доп.точки доступа:
Yaroslavtsev, R. N.; Ярославцев, Роман Николаевич; Tyumentseva, A.V.; Velikanov, D. A.; Великанов, Дмитрий Анатольевич; Vazhenina, I. G.; Важенина, Ирина Георгиевна; Volochaev, M. N.; Волочаев, Михаил Николаевич; Stolyar, S. V.; Столяр, Сергей Викторович
}
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Magnetic collective state formation upon tuning the interparticle interactions in ensembles of ultrafine ferrihydrite nanoparticles / D. A. Balaev, A. A. Krasikov, Yu. V. Knyazev [et al.] // Nano-Struct. Nano-Objects. - 2024. - Vol. 37. - Ст. 101089, DOI 10.1016/j.nanoso.2023.101089. - Cited References: 93. - The authors thank M.N. Volochaev for the TEM investigations . - ISSN 2352-507X. - ISSN 2352-5088
Кл.слова (ненормированные):
Nanoparticle coating -- Superspin-glass state -- Superparamagnetic blocking -- Surface spin subsystem
Аннотация: The results of a study of the dynamic (alternating current magnetic susceptibility) and static magnetic properties, as well as 57Fe Mössbauer spectrometry and ferromagnetic resonance of two-line ferrihydrite nanoparticle systems with varying intensities of magnetic interparticle interactions are reported. The strength of the magnetic interparticle interactions has been tuned by coating (with various degrees of coating) the ferrihydrite particles (2–4 nm in size and an average size ∼2.7 nm) of the initial synthetic sample by arabinogalactan. Also, a biogenic ferrihydrite sample (an average particle size of 2-nm) with a natural organic coating was studied and it has the weakest magnetic interparticle interactions among of all the samples. Relaxation times of the particle’s magnetic moment were determined by the data of static and dynamic magnetic susceptibilities and from analysis of 57Fe Mössbauer spectrometry. Based on the temperature dependences of the relaxation times, it has been concluded that the predominantly collective processes of freezing of the particle magnetic moments occur under the action of the magnetic interparticle interactions. It is shown that an important role in these processes is played by a magnetic subsystem of the surface spins of the particles. The effect of the interplay between the surface spin and magnetic moment subsystems on the static magnetic properties (low-temperature magnetic hysteresis loops) and the parameters of the microwave absorption line under the magnetic resonance conditions is discussed.

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Держатели документа:
Kirensky Institute of Physics, Federal Research Center KSC SB RAS, Krasnoyarsk 660036, Russia
Federal Research Center KSC SB RAS, Krasnoyarsk 660036, Russia
Institute of Chemistry and Chemical Technology, Federal Research Center KSC SB RAS, Krasnoyarsk 660036, Russia

Доп.точки доступа:
Balaev, D. A.; Балаев, Дмитрий Александрович; Krasikov, A. A.; Красиков, Александр Александрович; Knyazev, Yu. V.; Князев, Юрий Владимирович; Yaroslavtsev, R. N.; Ярославцев, Роман Николаевич; Velikanov, D. A.; Великанов, Дмитрий Анатольевич; Mikhlin, Yu. L.; Volochaev, M. N.; Волочаев, Михаил Николаевич; Bayukov, O. A.; Баюков, Олег Артемьевич; Ladygina, V. P.; Stolyar, S. V.; Столяр, Сергей Викторович; Iskhakov, R. S.; Исхаков, Рауф Садыкович
}
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Influence of arabinogalactan-coated selenium nanoparticles on the formation of free radicals in Ehrlich ascites carcinoma cells / K. V. Shadrin, Yu. A. Yakovleva, O. V. Kryukova [et al.] // BioNanoScience. - 2024. - Vol. 14, Is. 1. - P. 268-275, DOI 10.1007/s12668-023-01251-6. - Cited References: 40 . - ISSN 2191-1630. - ISSN 2191-1649
Кл.слова (ненормированные):
Selenium -- Nanoparticles -- Microwave radiation -- Antioxidant properties -- Ehrlich ascitic carcinoma
Аннотация: The antioxidant properties of selenium nanoparticles coated with arabinogalactan have been studied. The nanoparticles were characterized by transmission electron microscopy and infrared spectroscopy. Arabinogalactan-coated selenium nanoparticles were incubated together with Ehrlich ascitic carcinoma cells and then exposed to microwave radiation. The antioxidant properties of selenium nanoparticles were evaluated using chemiluminescent analysis. The viability of Ehrlich ascitic carcinoma cells under microwave irradiation and incubation with selenium nanoparticles was assessed by flow cytometry. Under conditions of exposure to experimental tumor cells of microwave radiation, the concentration of free radicals in the cells did not change. The effect of arabinogalactan-coated selenium nanoparticles on tumor cells is expressed as an increase in the delay time for the activation of the antioxidant system.

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Держатели документа:
Professor V.F. Voino-Yasenetsky Krasnoyarsk State Medical University, P. Zeleznyak street, 1, 660022, Krasnoyarsk, Russia
Krasnoyarsk Science Center, Federal Research Center KSC SB RAS, Akademgorodok 50, 660036, Krasnoyarsk, Russia
Siberian Federal University, Svobodny, 79, 660041, Krasnoyarsk, Russia
Kirensky Institute of Physics, Federal Research Center KSC SB RAS, Akademgorodok 50, bld. 38, 660036, Krasnoyarsk, Russia
Institute of Chemistry and Chemical Technology, Federal Research Center KSC SB RAS, 660036, Krasnoyarsk, Russia

Доп.точки доступа:
Shadrin, K. V.; Yakovleva, Yu. A.; Kryukova, O. V.; Makarskaya, G. V.; Tarskikh, S. V.; Pyankov, V. F.; Pakhomova, V. G.; Gerasimova, Yu. V.; Герасимова, Юлия Валентиновна; Yaroslavtsev, R. N.; Ярославцев, Роман Николаевич; Vorobyev, S. A.; Stolyar, S. V.; Столяр, Сергей Викторович
}
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A hybrid quantum–classical theory for predicting terahertz charge-transfer plasmons in metal nanoparticles on graphene / A. S. Fedorov, E. V. Eremkin, P. O. Krasnov [et al.] // J. Chem. Phys. - 2024. - Vol. 160, Is. 4. - Ст. 044117, DOI 10.1063/5.0178247. - Cited References: 61. - This study was funded by the Ministry of Science and High Education of Russian Federation, Project No. FSRZ-2023-0006. The calculations of CTPs in specific NP–graphene complexes were performed within the RSF Grant No. 23-12-20007 and the Krasnoyarsk Territorial Foundation for Support of Scientific and R & D Activities, Agreement No. 256. H. Ågren was supported by the Swedish Science Research Council on Contract No. 2022-03405 . - ISSN 0021-9606. - ISSN 1089-7690
Аннотация: Metal nanoparticle (NP) complexes lying on a single-layer graphene surface are studied with a developed original hybrid quantum–classical theory using the Finite Element Method (FEM) that is computationally cheap. Our theory is based on the motivated assumption that the carrier charge density in the doped graphene does not vary significantly during the plasmon oscillations. Charge transfer plasmon (CTP) frequencies, eigenvectors, quality factors, energy loss in the NPs and in graphene, and the absorption power are aspects that are theoretically studied and numerically calculated. It is shown the CTP frequencies reside in the terahertz range and can be represented as a product of two factors: the Fermi level of graphene and the geometry of the NP complex. The energy losses in the NPs are predicted to be inversely dependent on the radius R of the nanoparticle, while the loss in graphene is proportional to R and the interparticle distance. The CTP quality factors are predicted to be in the range ~ 10 – 100. The absorption power under CTP excitation is proportional to the scalar product of the CTP dipole moment and the external electromagnetic field. The developed theory makes it possible to simulate different properties of CTPs 3–4 orders of magnitude faster compared to the original FEM or the finite-difference time domain method, providing possibilities for predicting the plasmonic properties of very large systems for different applications.

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Держатели документа:
International Research Center of Spectroscopy and Quantum Chemistry, Siberian Federal University, 660041 Krasnoyarsk, Russia
Kirensky Institute of Physics, Federal Research Center KSC SB RAS, 660036 Krasnoyarsk, Russia
Institute of Computational Modeling SB RAS, 660036 Krasnoyarsk, Russia
Department of Physics and Astronomy, Uppsala University, Box 516, SE-751 20 Uppsala, Sweden

Доп.точки доступа:
Fedorov, A. S.; Федоров, Александр Семенович; Eremkin, E. V.; Krasnov, P. O.; Gerasimov, V. S.; Agren, H.; Polyutov, S. P.
}
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10.

Modification of synthetic valleriite surface with gold nanoparticles: The roles of specific adsorption and zeta potential / A. A. Karacharov, M. N. Likhatski, R. V. Borisov [et al.] // Colloid J. - 2024. - Vol. 86, Is. 1. - P. 40-51, DOI 10.1134/S1061933X23601075. - Cited References: 69. - This work was supported by the Russian Science Foundation project no. 22-13-00321 . - ISSN 1061-933X. - ISSN 1608-3067
Кл.слова (ненормированные):
synthetic valleriites -- gold nanoparticles -- X-ray photoelectron spectroscopy -- transmission electron microscopy -- zeta potential
Аннотация: Layered two-dimensional materials, whose properties dramatically differ from their bulk precursors, are of great theoretical and applied importance. Recently, a layered 2D material, an analog of a natural mineral, valleriite, in which quasi-monoatomic Cu−Fe−S sheets alternate with brucite-like ones, has been prepared using a simple hydrothermal synthesis procedure. The features of the electronic structure of these materials make it possible to propose them as new materials for a wide field of applications such as (electro)photocatalysis, high-capacity batteries, etc. In this work, nanocomposite materials have been prepared via immobilization of gold nanoparticles (AuNPs) from citrate hydrosols on the surface of the synthesized valleriites having different compositions of hydroxide layers, which control the surface charge density. According to X-ray photoelectron spectroscopy (XPS), transmission electron microscopy (TEM), energy-dispersive X-ray microanalysis (EDX), and selected area electron diffraction (SAED) data, AuNPs are immobilized on valleriite nanoflakes, which have lateral sizes of 150–200 nm and thicknesses of several tens of nanometers, as isolated metal nanoparticles with an average diameter of 11 nm. A small amount of aggregates indicates a high affinity of AuNPs for the valleriite surface. The amounts of immobilized gold are the same on all studied valleriites (~0.2%). This finding may be related to the simultaneous sorption of free citrate ions from the AuNP hydrosols, with these ions, according to zeta potential measurements, charging the surfaces of all studied valleriite samples to nearly the same negative value of –40 mV. According to the XPS data, the AuNPs immobilization markedly decreases the magnesium and oxygen contents on the surfaces of the synthesized valleriites due to the partial degradation/dissolution of the brucite layer. In addition, the amount of Fe3+ ions bound to OH groups decreases with a simultaneous increase in the fraction of Fe3+–O species. The TEM data have confirmed the preservation of the layered structure of valleriites after the immobilization of AuNPs.

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Публикация на русском языке Модификация поверхности синтетического валлериита наночастицами золота: роль специфической адсорбции и дзета-потенциала [Текст] / А. А. Карачаров, М. Н. Лихацкий, Р. В. Борисов [и др.]. - 13 с. // Коллоид. журн. - 2024. - Т. 86 № 1. - С. 45-57

Держатели документа:
Institute of Chemistry and Chemical Technology, Siberian Branch, Russian Academy of Sciences, Federal Research Center “Krasnoyarsk Scientific Center, Siberian Branch, Russian Academy of Sciences”, 660036, Akademgorodok, Krasnoyarsk, Russia
Kirensky Institute of Physics, Siberian Branch, Russian Academy of Sciences, Federal Research Center “Krasnoyarsk Scientific Center, Siberian Branch, Russian Academy of Sciences”, 660036, Akademgorodok, Krasnoyarsk, Russia
Siberian Federal University, 660041, Krasnoyarsk, Russia

Доп.точки доступа:
Karacharov, A. A.; Likhatski, M. N.; Borisov, R. V.; Tomashevich, E. V.; Vorobyev, S. A.; Zharkov, S. M.; Жарков, Сергей Михайлович
}
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11.

Separating the contributions of the magnetic subsystems in antiferromagnetic ferrihydrite nanoparticles by analyzing the magnetization in fields of up to 250 kOe / A. A. Krasikov, D. A. Balaev, A. D. Balaev [et al.] // J. Magn. Magn. Mater. - 2024. - Vol. 592. - Ст. 171781, DOI 10.1016/j.jmmm.2024.171781. - Cited References: 84. - This study was supported by his work was supported by the Russian Science Foundation, project no. 22–72-00134. - Authors thank to D.A. Velikanov, S.V. Komogortsev for fruitful discussions . - ISSN 0304-8853. - ISSN 1873-4766
Аннотация: Contributions of different magnetic subsystems formed in the systems of synthetic ferrihydrite nanoparticles (characterized previously) with an average size of ˂d˃ ≈ 2.7 nm coated with polysaccharide arabinogalactan in different degrees have been separated by measuring the dependences of their magnetization M on magnetic field H of up to 250 kOe on vibrating sample and pulsed magnetometers. The use of a wide measuring magnetic field range has been dictated by the ambiguity in identifying a linear M(H) portion for such antiferromagnetic nanoparticle systems within the conventional field range of 60–90 kOe. The thorough analysis of the magnetization curves in the temperature range of 100–250 K has allowed the verification of the contributions of (i) uncompensated magnetic moments µun in the superparamagnetic subsystem, (ii) the subsystem of surface spins with the paramagnetic behavior, and (iii) the antiferromagnetic susceptibility of the antiferromagnetically ordered ferrihydrite particle core. As a result, a model of the magnetic state of ferrihydrite nanoparticles has been proposed and the numbers of spins corresponding to magnetic subsystems (i)–(iii) have been estimated. An average magnetic moment μun of ∼ 145 μB (μB is the Bohr magneton) per particle corresponds approximately to 30 decompensated spins of iron atoms in a particle (about 3 % of all iron atoms), which, according to the Néel’s hypothesis μun ∼ ˂d˃3/2, are localized both on the surface and in the bulk of an antiferromagnetically ordered particle. The fraction of free (paramagnetic) spins is minimal in the sample without arabinogalactan coating of the nanoparticle surface (7 %) and is attained 20 % of all iron atoms in the sample with the highest degree of spatial separation of particles. According to this estimation, paramagnetic spins are located mainly on the edges and protruding areas of particles. Most magnetic moments of iron atoms are ordered antiferromagnetically and the corresponding magnetic susceptibility of this subsystem behaves as in an antiferromagnet with the randomly distributed crystallographic axes, i.e., increases with temperature.

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Держатели документа:
Kirensky Institute of Physics, Federal Research Center of Siberian Branch of Russian Academy of Sciences, Krasnoyarsk, Russia
Federal Research Center of Siberian Branch of Russian Academy of Sciences Krasnoyarsk, Russia

Доп.точки доступа:
Krasikov, A. A.; Красиков, Александр Александрович; Balaev, D. A.; Балаев, Дмитрий Александрович; Balaev, A. D.; Балаев, Александр Дмитриевич; Stolyar, S. V.; Столяр, Сергей Викторович; Yaroslavtsev, R. N.; Ярославцев, Роман Николаевич; Iskhakov, R. S.; Исхаков, Рауф Садыкович
}
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12.

    Temperature resistance of silver and iron nanoparticles / B. B. Damdinov, A. A. Ershov, Ch. M. Mitypov [et al.] // J. Sib. Fed. Univ. Math. Phys. - 2024. - Vol. 17, Is. 4. - P. 497-505 ; Журн. СФУ. Матем. и физ., EDN IMICDE. - Cited References: 24. - The authors would like to express their special thanks to Krasnoyarsk Regional Center of Research Equipment of Federal Research Center "Krasnoyarsk Science Center SB RAS" for providing measurements on Raman spectrometer Horiba Jobin Yvon T64000. Experimental measurements of suspension attenuation of suspensions is partially financed by Ministry of Science and Higher Education of the Russian Federation (project no. FSRZ-2020- 0012) . - ISSN 1997-1397
   Перевод заглавия: Устойчивость к температурному воздействию наночастиц серебра и железа
Кл.слова (ненормированные):
suspensions of iron and silver nanoparticles -- lubricants -- Raman scattering of light -- shift of spectral lines -- суспензии наночастиц железа и серебра -- смазочные материалы -- комбинационное рассеяние света -- смещение спектральных линий
Аннотация: In this work, a study of iron and silver nanoparticles was carried out by Raman spectroscopy. The spectra were obtained by changing the temperature. The positions of individual spectral lines were found to determine the presence or absence of second-order phase transitions. Based on the data on the shift of spectral lines, one can also draw a conclusion about the stability of the objects of study under changing external conditions and how this affects changes in the suspensions in which they are included. Absorption coefficients were measured, and the sizes of the studied nanoparticles in aqueous suspensions were determined.
В работе было проведено исследование наночастиц железа и серебра методом спектроскопии комбинационного рассеяния света. Спектры были получены при изменении температуры. Были получены значения частот отдельных спектральных линий для определения наличия или отсутствия фазовых переходов второго рода. На основании данных о смещении спектральных линий также можно сделать вывод об устойчивости объектов исследования при изменении внешних условий и о том, как это повлияет на изменения суспензий, в состав которых они входят.

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Держатели документа:
Siberian Federal University, Krasnoyarsk, Russian Federation
Institute of Physical Materials Science SB RAS, Ulan-Ude, Russian Federation
Institute of Physics, Federal Research Center KSC SB RAS, Krasnoyarsk, Russian Federation

Доп.точки доступа:
Damdinov, B. B.; Ershov, A. A.; Mitypov, Ch. M.; Maximova, O. A.; Максимова, Ольга Александровна; Haruk, G. N.

}
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13.

Plasma-chemical method of silicon carbide modification to obtain particles with controlled surface morphology / T. A. Shalygina, M. S. Rudenko, I. V. Nemtsev [et al.] // Tech. Phys. Lett. - 2024. - Vol. 50, Is. 2. - P. 239-243, DOI 10.1134/S1063785023180189. - Cited References: 9. - This study was conducted under state assignment from the Ministry of Science and Higher Education of the Russian Federation for the "Smart Materials and Structures" research laboratory (project no. FEFE-2020-0015 "Development of Multipurpose Smart Materials and Structures Based on Modified Polymer Composite Materials Remaining Functional in Extreme Conditions") . - ISSN 1063-7850. - ISSN 1090-6533
Кл.слова (ненормированные):
silicon carbide -- plasma chemistry -- surface morphology -- nanoparticles -- nanowires -- carbon shell -- core-shell
Аннотация: A plasma-chemical method for the modification of silicon carbide particles is presented, which makes it possible to obtain particles with a controlled surface morphology. The variable parameter of particle processing was the ratio of the fraction of plasma-forming (Ar) and additional (H) gases. It was shown that at Ar/H = 100/0, the formation of a carbon shell is observed; at Ar/H ratios of 91/9 and 84/16, the particles are characterized by a carbon shell decorated with silicon nanoparticles or nanowires, respectively. The modified particles were analyzed using scanning electron microscopy and Raman spectroscopy.

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Публикация на русском языке Плазмохимический способ модификации карбида кремния для получения частиц с управляемой морфологией поверхности [Текст] / Т. А. Шалыгина, М. С. Руденко, И. В. Немцев [и др.] // Письма в Журн. технич. физ. - 2022. - Т. 48 Вып. 4. - С. 15-19

Держатели документа:
Reshetnev Siberian State Aerospace University, Krasnoyarsk, Russia
Siberian Federal University, Krasnoyarsk, Russia
Federal Research Center KSC SB RAS, Russian Academy of Sciences, Krasnoyarsk, Russia
Kirensky Institute of Physics, Federal Research Center KSC SB, Russian Academy of Sciences, Krasnoyarsk, Russia
Institute of Chemistry and Chemical Technology, Federal Research Center KSC SB RAS, Russian Academy of Sciences, Krasnoyarsk, Russia

Доп.точки доступа:
Shalygina, T. A.; Rudenko, M. S.; Nemtsev, I. V.; Немцев, Иван Васильевич; Parfenov, V. A.; Voronina, S. Yu.
}
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14.

    Application of mechanical separation method with filtration for nanodispersed FeNi powders with carbon coating / N. G. Vnukova, N. S. Nikolaev, G. N. Churilov [et al.] // Fuller. Nanotub. Carbon Nanostructures. - 2024, DOI 10.1080/1536383X.2024.2400270. - Cited References: 36 . - Article in press. - ISSN 1536-383X. - ISSN 1536-4046
   Перевод заглавия: Применение метода механического разделения с фильтрацией для получения нанодисперсных порошков FeNi с углеродным покрытием
Кл.слова (ненормированные):
Method of mechanical separation -- nanoparticles -- carbon shell -- crystal structures -- FeNi@C
Аннотация: It was shown that the method of mechanical separation with filtration could be used to separate metal nanoparticles in a carbon shell. The method was used for separation of FeNi nanoparticles with a carbon shell, previously isolated from carbon condensate by boiling in acids. The particles had a crystalline structure and magnetic characteristics (Mr/Ms = 0.30, Hc = 270 Oe). Method of mechanical separation with filtration made it possible to separate the sample into particles coated with a carbon shell (particles size 40–50 nm, size of the metal core 10–15 nm), and into metal particles with a diameter of 6–15 nm, dispersed in a carbon matrix. The work shows that the samples have similar magnetic properties (Mr/Ms = 0.27, Hc = 236 Oe) and chemical composition (Ni ∼ 10 wt.%, Fe ∼ 12 wt.%, C ∼ 57 wt.%). However, the samples differ in structure, one contains FeNi(220), FeNi(200), FeNi(111) and C(002) phases, while the other contains only FeNi(200) and C(002) phases.

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Держатели документа:
Kirensky Institute of Physics, FSBSI "Federal Research Center Krasnoyarsk Science Center SB RAS", Krasnoyarsk, Russia
Institute of Engineering Physics and Radio Electronics, Siberian Federal University, Krasnoyarsk, Russia

Доп.точки доступа:
Vnukova, N. G.; Внукова, Наталья Григорьевна; Nikolaev, N. S.; Николаев, Никита Сергеевич; Churilov, G. N.; Чурилов, Григорий Николаевич; Isakova, V. G.; Исакова, Виктория Гавриловна; Elesina, V. I.; Елесина, Виктория Игоревна; Glushenko, G. A.; Глущенко, Гарий Анатольевич
}
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15.

Ferrite nanoparticles FexCo3-xO4 are active catalysts for the organic dyes degradation / O. S. Ivanova, I. S. Edelman, A. Е. Sokolov [et al.] // Catalysis: from science to industry : proceedings of VIII International scientific school-conference. - Tomsk, 2024. - Sec. 2: Poster presentations. - P. 89. - Cited References: 8. - Russian Sci. Found. Grant 23-22-10025 and Krasnoyarsk Reg. Sci. Found. . - ISBN 978-5-907722-99-6

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

Доп.точки доступа:
Ivanova, O. S.; Иванова, Оксана Станиславовна; Edelman, I. S.; Эдельман, Ирина Самсоновна; Sokolov, A. Е.; Соколов, Алексей Эдуардович; Svetlitsky, E. S.; Popova, A. M.; "Catalysis: from science to industry", International scientific school-conference(8 ; 2024 ; Sept. 30 - Oct. 3 ; Tomsk); Томский государственный университет
}
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16.

    Effect of Co concentration on cation distribution and magnetic and magneto-optical properties of CoxZn1-xFe2O4 nanoparticles synthesized with citrate precursor method / A. Thakur, I. Edelman, D. Petrov [et al.] // J. Mater. Res. - 2024, DOI 10.1557/s43578-024-01442-1. - Cited References: 68. - The research was carried out within the state assignment of Kirensky Institute of Physics. PT is thankful to DST-SERB TARE fellowship vide Sanction Order No TAR/2022/000414. AT and PT would also like to acknowledge the support provided under the DST-FIST Grant No. SR/FST/PS-I/2018/48 of Govt. of India . - Article in press. - ISSN 0884-2914. - ISSN 2044-5326
   Перевод заглавия: Влияние концентрации Co на распределение катионов, магнитные и магнитооптические свойства наночастиц CoxZn1‑xFe2O4, синтезированных с использованием метода цитратного прекурсора
Кл.слова (ненормированные):
Nanostructure -- Magnetic properties -- Transmission electron microscopy (TEM) -- Mossbauer effect -- Magnetooptics
Аннотация: Magnetic properties of mixed spinel ferrites are determined, in great extent, by the magnetic cation distribution among tetrahedral and octahedral positions in a crystal. In the case of CoZn-ferrites, most researchers reported a predominant localization of the divalent cobalt ions in octahedral positions. Using the citrate precursor auto-combustion method, we successfully synthesized CoxZn1-xFe2O4 nanoparticles (x changed from 0.0 to 0.5) with an approximately evenly distribution of Co2+ ions between these interstitial positions. Fe3+ ions are localized preferably in octahedral positions. This type of 3d-ion distribution predetermined the combination of the large saturation magnetization and very low coercive field of the nanoparticles, which may be of importance for applications. MCD spectra of CoxZn1-xFe2O4 nanoparticles are studied here for the first time. Revealed intense MCD peak at 1.75 eV corresponds to the emission wavelength (710 nm) of some lasers, e.g., ALP-710 nm (NKT Photonics, Denmark) which may be of interest for photonic devices.

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Amity University Haryana, Gurugram, Haryana, 122413, India
Kirensky Institute of Physics, Federal Research Center KSC, Siberian Branch, Russian Academy of Sciences, 50 Akademgorodok, Krasnoyarsk, 660036, Russia
Siberian Federal University, 79 Svobodny Ave., Krasnoyarsk, 660041, Russia

Доп.точки доступа:
Thakur, A.; Edelman, I. S.; Эдельман, Ирина Самсоновна; Petrov, D. A.; Петров, Дмитрий Анатольевич; Ovchinnikov, S. G.; Овчинников, Сергей Геннадьевич; Thakur, P.; Zharkov, S. M.; Жарков, Сергей Михайлович; Knyazev, Yu. V.; Князев, Юрий Владимирович; Sukhachev, A. L.; Сухачев, Александр Леонидович
}
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17.

    Наночастицы Fe0.55Co2.45O4: синтез, магнитные и адсорбционные свойства / О. С. Иванова, И. С. ЭдельманLin Chun-Rong [и др.] // Новое в магнетизме и магнитных материалах : сборник трудов XXV международной конференции / прогр. ком.: Р. С. Исхаков, С. Г. Овчинников [и др.]. - 2024. - Секция 1 [Сборник 1] : Новые магнитные и родственные им материалы: синтез и физические свойства. Преподавание по разделам «Магнетизм» и «Магнитные материалы» в высшей школе. - С. 4-6. - Библиогр.: 5. - РНФ, Красноярский краевой фонд науки, грант № 23-22-10025 . - ISBN 978-5-4465-1869-2
   Перевод заглавия: Fe0.55Co2.45O4 nanoparticles: synthesis, magnetic and adsorption properties
Аннотация: Наночастицы Fe0.55Co2.45O4 синтезированы методом самовозгорания в растворе и подвергнуты термообработке различной длительности при различных температурах Ttreat от 400 до 800 °C. Как исходные наночастицы, то есть, частицы непосредственно после синтеза, так и прошедшие термообработку являются нанокристаллами шпинели с параметрами, характерными для Co3O4. Температура Ttreat критически влияет на размеры нанокристаллов и их свойства. Размеры нанокристаллов монотонно возрастают с увеличением Ttreat от 5.2 нм в исходном образце до 48 нм при Ttreat =800 °C. Намагниченность и спектры магнитного кругового дихроизма при этом также очень сильно изменяются, но немонотонно. Обнаружена высокая адсорбционная емкость наночастиц по отношению к анионному красителю Конго красный.

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Держатели документа:
Институт физики им. Л.В. Киренского Сибирского отделения Российской академии наук - обособленное подразделение ФИЦ КНЦ СО РАН
Сибирский федеральный университет
National Pingtung University, Pingtung, Taiwan, R.O.C.

Доп.точки доступа:
Исхаков, Рауф Садыкович \прогр. ком.\; Iskhakov, R. S.; Овчинников, Сергей Геннадьевич \прогр. ком.\; Ovchinnikov, S. G.; Иванова, Оксана Станиславовна; Ivanova, O. S.; Эдельман, Ирина Самсоновна; Edelman, I. S.; Lin Chun-Rong; Петров, Дмитрий Анатольевич; Petrov, D. A.; Торопова, Е. С.; Сухачев, Александр Леонидович; Sukhachev, A. L.; "Новое в магнетизме и магнитных материалах", международная конференция(25 ; 2024 ; 1-6 июля ; Москва); Научный совет по физике конденсированных сред РАН; МИРЭА - Российский технологический университет; Московский государственный университет им. М.В. Ломоносова; Магнитное общество России
}
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18.

    Эволюция фазового состава и магнитных свойств композита на основе наночастиц ε-Fe2O3, иммобилизированных в ксерогель SiO2, при увеличении концентрации оксида железа и магнитные свойства наночастиц ε-Fe2O3, извлеченных из композита ε-Fe2O3/ксерогель / А. А. Дубровский, С. В. Семенов, Ю. В. Князев [и др.] // Новое в магнетизме и магнитных материалах : сборник трудов XXV международной конференции / прогр. ком.: Р. С. Исхаков, С. Г. Овчинников [и др.]. - 2024. - Секция 9 [Сборник 9] : Магнитные наноструктуры. Малые магнитные частицы. - С. 120-123. - Библиогр.: 4. - РНФ, Красноярский краевой фонд науки, грант № 24-12-20011 . - ISBN 978-5-4465-1869-2
   Перевод заглавия: Evolution of the phase composition and magnetic properties of a composite based on ε-Fe2O3 nanoparticles immobilized in SiO2 xerogel with increasing iron oxide concentration and magnetic properties of ε-Fe2O3 nanoparticles extracted from the ε-Fe2O3/xerogel composite
Аннотация: ε-Fe2O3 является достаточно редкой полиморфной модификацией оксида железа и существует только в виде наночастиц. Как и во всех наноструктурах, поверхностные и размерные эффекты играют важную роль в проявляемых магнитных свойствах. В данной работе мы исследовали эволюцию фазового состава и магнитных свойств композита на основе наночастиц ε-Fe2O3, иммобилизированных в ксерогель SiO2, при увеличении концентрации оксида железа и сопутствующего данному увеличению роста размеров наночастиц оксида железа, а также магнитные свойства наночастиц ε-Fe2O3, извлеченных из композита ε-Fe2O3/ксерогель.

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Держатели документа:
Институт физики им. Л.В. Киренского Сибирского отделения Российской академии наук - обособленное подразделение ФИЦ КНЦ СО РАН
Институт катализа им. Г. К. Борескова СО РАН

Доп.точки доступа:
Исхаков, Рауф Садыкович \прогр. ком.\; Iskhakov, R. S.; Овчинников, Сергей Геннадьевич \прогр. ком.\; Ovchinnikov, S. G.; Дубровский, Андрей Александрович; Dubrovskii, A. A.; Семенов, Сергей Васильевич; Semenov, S. V.; Князев, Юрий Владимирович; Knyazev, Yu. V.; Кириллов, В. Л.; Балаев, Дмитрий Александрович; Balaev, D. A.; Мартьянов, Олег Николаевич; "Новое в магнетизме и магнитных материалах", международная конференция(25 ; 2024 ; 1-6 июля ; Москва); Научный совет по физике конденсированных сред РАН; МИРЭА - Российский технологический университет; Московский государственный университет им. М.В. Ломоносова; Магнитное общество России
}
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19.

Adsorption and Catalytic Properties of Nanoparticles Fe3O4-Ag in Relation to Various Types of Organic Dyes / O. S. Ivanova, I. S. Edel'man, E. S. Sventitsky [et al.] // XII lnternational conference "Mechanisms of catalvtic reactions" : abstracts. - Novosibirsk, 2024. - Ст. PP-09. - P. 174-175. - Библиогр.: 2. - РНФ и Красноярский краевой фонд науки, проект 23-22-10025 . - ISBN 978-5-906376-56-5

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

Доп.точки доступа:
Ivanova, O. S.; Иванова, Оксана Станиславовна; Edel'man, I. S.; Эдельман, Ирина Самсоновна; Sventitsky, E. S.; Serdyuk, A. A.; Toropova, E. S.; "Mechanisms of catalytic reactions", International conference(12 ; 2024 ; June 17-21 ; Vladimir); "Механизмы каталитических реакций", международная конференция(12 ; 2024 ; 17-21 июня ; Владимир); Институт катализа им. Г.К. Борескова Сибирского отделения РАН; Институт органической химии им. Н.Д. Зелинского РАН; Московский государственный университет им. М.В. Ломоносова; Сибирское отделение РАН; Центр компетенций НТИ "Водород как основа низкоуглеродной экономики"
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20.

Sorting of extremely small nanoparticles by membranes supporting symmetry-protected bound states in the continuum / E. Bulgakov, G. Shadrina, A. Sadreev, K. Pichugin // Phys. Rev. B. - 2024. - Vol. 110, Is. 7. - Ст. 075305, DOI 10.1103/PhysRevB.110.075305. - Cited References: 58. - The work was supported by Russian Science Foundation Grant No. 22-12-00070 . - ISSN 2469-9950. - ISSN 2469-9969
Аннотация: We consider double perforated slabs (membranes) that support a symmetry-protected bound state in the continuum (BIC). These slabs are immersed into a liquid at room temperature. Laser excitation of the BIC generates giant optical forces that strongly affect the Brownian motion of nanoparticles in a colloidal solution. By solving of the Fokker-Planck equation we show that a single membrane can localize only larger nanoparticles. However, system of two parallel membranes can trap extremely small nanometer-sized nanoparticles by a resonant excitation of quasi-BICs, with varying intensities in each membrane.

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Держатели документа:
Kirensky Institute of Physics, Federal Research Center KSC SB RAS, 660036 Krasnoyarsk, Russia
Institute of Computational Modelling SB RAS, 660036 Krasnoyarsk, Russia

Доп.точки доступа:
Bulgakov, E. N.; Булгаков, Евгений Николаевич; Shadrina, G.; Sadreev, A. F.; Садреев, Алмаз Фаттахович; Pichugin, K. N.; Пичугин, Константин Николаевич
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