Библиотека института физики им. Л.В. Киренского СО РАН

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Труды сотрудников ИФ СО РАН

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Electrospinning of polyhydroxyalkanoate fibrous scaffolds: effects on electrospinning parameters on structure and properties / T. . Volova [et al.] // J. Biomater. Sci.-Polym. Ed. - 2014. - Vol. 25, Is. 4. - P. 370-393, DOI 10.1080/09205063.2013.862400. - Cited References: 52. - This study was financially supported by Project 'Biotechnologies of novel biomaterials: innovative biopolymers and devices for biomedicine' (Agreement No. 1 of 15.02.2013 to Agreement No. 11.G34.31.0013) in accordance with Resolution No. 220 of the Government of the Russian Federation of April 9, 2010, 'On measures designed to attract leading scientists to the Russian institutions of higher learning' and Grant of the RF President for supporting young Doctors of Sciences No. MD-3112.2012.4. . - ISSN 0920-5063. - ISSN 1568-5624

РУБ Engineering, Biomedical + Materials Science, Biomaterials + Polymer Science
Рубрики:
TISSUE ENGINEERING APPLICATIONS
   FIBER MATS
   POLY 3-HYDROXYBUTYRATE
   POLY(3-HYDROXYBUTYRATE-CO-3-HYDROXYVALERATE)
   BIOCOMPATIBILITY
   PROLIFERATION
   FABRICATION
   NANOFIBERS
   COPOLYMERS
   MEMBRANES
Кл.слова (ненормированные):
electrospinning -- polyhydroxyalkanoates -- ultrafine fibers -- physical-mechanical properties -- fibroblast cells
Аннотация: IIn this study, electrospinning was used to prepare ultrafine fibers from PHAs with different chemical compositions: P(3HB) and copolymers: P(3HB-co-4HB), P(3HB-co-3HV), and P(3HB-co-3HHx). The main process parameters that influence ultrafine fiber diameter and properties (polymer concentration, solution feeding rate, working distance, and applied voltage) have been investigated and their effects evaluated. The study revealed electrospinning parameters for the production of high-quality ultrafine fibers and determined which parameters should be varied to tailor the properties of the products. This study is the first to compare biological and physical-mechanical parameters of PHAs with different chemical compositions as dependent upon the fractions of monomers constituting the polymers and ultrafine fiber orientation. Mechanical strength of aligned ultrafine fibers prepared from different PHAs is higher than that of randomly oriented ones; no significant effect of ultrafine fiber orientation on surface properties has been found. None of the fibrous scaffolds produced by electrospinning from PHAs had any adverse effects on attachment, growth, and viability of NIH 3T3 mouse fibroblast cells, and all of them were found to be suitable for tissue engineering applications.

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Держатели документа:
Russian Acad Sci, Inst Biophys, Siberian Branch, Krasnoyarsk 660036, Russia
Siberian Fed Univ, Inst Fundamental Biol & Biotechnol, Krasnoyarsk 660041, Russia
Russian Acad Sci, LV Kirenskii Inst Phys, Siberian Branch, Krasnoyarsk 660036, RussiaИФ СО РАН;

Доп.точки доступа:
Volova, T.; Волова, Татьяна Григорьевна; Goncharov, D.; Sukovatyi, A. G.; Суковатый, Алексей Григорьевич; Shabanov, A. V.; Шабанов, Александр Васильевич; Nikolaeva, E.; Shishatskaya, E.; Project 'Biotechnologies of novel biomaterials: innovative biopolymers and devices for biomedicine' [1, 11.G34.31.0013]; Government of the Russian Federation [220]; RF President for supporting young Doctors of Sciences [MD-3112.2012.4]
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    Thermite synthesis and characterization of Co-ZrO2 ferromagnetic nanocomposite thin films / V. G. Myagkov [et al.] // J. Alloys Compd. - 2016. - Vol. 665. - P. 197-203, DOI 10.1016/j.jallcom.2015.12.257. - Cited References: 56. - This study was partially supported by the Russian Foundation for Basic Research (grants ##15-02-00948, 14-03-00515), by the Council for Grants of the President of the Russian Federation (SP-317.2015.1), and by the program of the Foundation for Assistance to Small Innovative Enterprises in Science and Technology (“UMNIK” program). The TEM studies were carried out using the facilities of Electron Microscopy Laboratory of Siberian Federal University and the Performance Service at Krasnoyarsk Scientific Center. . - ISSN 0925-8388
   Перевод заглавия: Термитный синтез и исследование ферромагнитных нанокомпозитных тонких пленок Co-ZrO2

РУБ Chemistry, Physical + Materials Science, Multidisciplinary + Metallurgy & Metallurgical Engineering
Рубрики:
SOLID-STATE SYNTHESIS
   PHASE-FORMATION
   ZrO2
   NANOPARTICLES
   TRANSPORT
   OXIDE
   MICROSTRUCTURE
   NANOTHERMITE
   FABRICATION
   PARTICLES
Кл.слова (ненормированные):
Thermite reactions -- Reactive films -- Ferromagnetic nanocomposite films -- ZrO2
Аннотация: Co-ZrO2 ferromagnetic nanocomposite thin films were successfully synthesized using a new thermite reaction between Zr and Co3O4 in layer geometry. The initial Zr/Co3O4 bilayers were obtained by the deposition of Zr layers onto Co3O4 films at room temperature. The process of mixing at the Zr/Co3O4 interface and synthesis of fine-crystalline Co and amorphous ZrO2 phases started at a temperature above the initiation temperature Tin ∼250 °C which did not depend on the bilayer thickness. For the bilayer thickness more than 300 nm high-temperature fcc-Co and cubic c-ZrO2 (or tetragonal t-ZrO2) phases were formed. For the bilayer thickness less than ∼50 nm stable low-temperature hexagonal hcp-Co and monoclinic m-ZrO2 phases were also present in the reaction product. A partial transformation from Co3O4 to CoO occurred after annealing at 300 °C. The secondary reaction between CoO and Zr started soon after Co3O4 had been converted to the CoO phase. After annealing at 500 °C more than 80% of Co was reduced and the final product contained Co nanoparticles above and below the superparamagnetic critical size embedded into a dielectric ZrO2 matrix. The synthesized Co-ZrO2 nanocomposite films possessed soft magnetic behavior, high magnetization and good chemical stability.

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Держатели документа:
Kirensky Institute of Physics, Russian Academy of Sciences, Siberian Branch, Krasnoyarsk, Russian Federation
Reshetnev Siberian State Aerospace University, Krasnoyarsk, Russian Federation
Siberian Federal University, Krasnoyarsk, Russian Federation
Institute of Chemistry and Chemical Technology, Russian Academy of Sciences, Siberian Branch, Krasnoyarsk, Russian Federation

Доп.точки доступа:
Myagkov, V. G.; Мягков, Виктор Григорьевич; Zhigalov, V. S.; Жигалов, Виктор Степанович; Bykova, L. E.; Быкова, Людмила Евгеньевна; Zharkov, S. M.; Жарков, Сергей Михайлович; Matsynin, A. A.; Мацынин, Алексей Александрович; Volochaev, M. N.; Волочаев, Михаил Николаевич; Tambasov, I. A.; Тамбасов, Игорь Анатольевич; Bondarenko, G. N.; Бондаренко, Галина Николаевна
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    Layered hydroxyl sulfate: Controlled crystallization, structure analysis, and green derivation of multi-color luminescent (La,RE)2O2SO4 and (La,RE)2O2S phosphors (RE = Pr, Sm, Eu, Tb, and Dy) / X. Wang [et al.] // Chem. Eng. J. - 2016. - Vol. 302. - P. 577-586, DOI 10.1016/j.cej.2016.05.089. - Cited References: 50. - This work is supported in part by the National Natural Science Foundation of China (Grants Nos. 51172038, 51302032, and U1302272), the Fundamental Research Fund for the Central Universities (Grant No. N140204002), Grants-in-Aid for Scientific Research (KAKENHI No. 26420686), and the Russian Foundation for Basic Research (15-52-53080). X.J. Wang acknowledges financial support from the China Scholarship Council for her overseas Ph.D. study (Contract No. 201406080035) and the assistance of Q. Q. Zhu (University of Science and Technology of China) for his help with calcination. . - ISSN 1385-8947
   Перевод заглавия: Слоистые гидроксил сульфаты: контролируемая кристаллизация, структурный анализ, и зеленый синтез мультицветных люминофоров (La,RE)2O2SO4 и (La,RE)2O2S (RE=Pr, Sm, Eu, Tb, and Dy)

РУБ Engineering, Environmental + Engineering, Chemical
Рубрики:
PHOTOLUMINESCENCE PROPERTIES
   OXYSULFATE/OXYSULFIDE SYSTEMS
   CRYSTAL-STRUCTURE
   OXYGEN-STORAGE
   Ln
   NANOCOMPOSITES
   EMISSION
   CAPACITY
   FAMILY
   FABRICATION
Кл.слова (ненормированные):
Sulfate type layered rare earth hydroxide -- Luminescence -- Oxysulfate -- Oxysulfide
Аннотация: The two important groups of Ln2O2SO4 and Ln2O2S compounds are traditionally synthesized with the involvements of environmentally harmful sulfur-containing reagents. We developed in this work a unique green approach for their synthesis, using Ln2(OH)4SO4·2H2O layered hydroxyl sulfate as the precursor (Ln-241 phase). Phase selective crystallization of La-241 under both atmospheric pressure and hydrothermal conditions was firstly optimized, followed by transformation into La2O2S and La2O2SO4 by controlled calcination. Rietveld structure refinement was performed for La-241, La(OH)SO4, La2O2SO4, and La2O2S, and the crystal structure and cell parameters of La-241 were originally reported. The photoluminescence performances of several important activators (Pr3+, Sm3+, Eu3+, Tb3+, and Dy3+) in the two hosts, in terms of excitation, emission, quantum yield, and color coordinates of emission, were thoroughly investigated, and multi-color luminescence including bright red, green, orange red, and yellow was obtained under ultraviolet excitation. Detailed investigations of Tb3+ photoluminescence revealed that the lack of 5D3 emission in La2O2S and the gradual quenching of 5D3 blue emission at a higher Tb3+ content (hence decreasing I488/I545 ratio and changing color coordinates) in La2O2SO4 were suggested to be due to thermal activation of the 5D3 electrons into the conduction band and cross relaxation between adjacent Tb3+, respectively. The synthesis approach developed in this work for La2O2SO4 and La2O2S, with water vapor as the only exhaust gas, is environmentally benign and holds great potential in the facile synthesis of analogous compounds of other lanthanides. © 2016 Elsevier B.V.

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Держатели документа:
Key Laboratory for Anisotropy and Texture of Materials (Ministry of Education), School of Materials Science and Engineering, Northeastern University, Shenyang, Liaoning, China
Advanced Materials Processing Unit, National Institute for Materials Science, Tsukuba, Ibaraki, Japan
Laboratory of Crystal Physics, Kirensky Institute of Physics, SB RAS, Krasnoyarsk, Russian Federation
Department of Physics, Far Eastern State Transport University, Khabarovsk, Russian Federation

Доп.точки доступа:
Wang, X.; Li, J. -G.; Molokeev, M. S.; Молокеев, Максим Сергеевич; Zhu, Q.; Li, X.; Sun, X.
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Stability and gas sensing properties of Ta2X3M8(X = Pd, Pt; M = S, Se) nanoribbons: a first-principles investigation / E. V. Sukhanova, M. A. Visotin, Z. I. Popov, P. B. Sorokin // Phys. Chem. Chem. Phys. - 2020. - Vol. 22, Is. 26. - P. 14651-14659, DOI 10.1039/d0cp01545h. - Cited References: 48. - We thank A. Khabibrakhmanov for comments that greatly improved themanuscript. The investigation of the TPS nanoribbon stability was supported by the Russian Science Foundation (Project identifier: 17-72-20223). The sensing properties of the nanoribbons were investigated with the financial support of the RFBR (17-33-50125 mol_nr) and Ministry of Education and Science of the Russian Federation in the framework of Increase Competitiveness Program of NUST "MISiS" (No. K2-2019-016). The authors are grateful to the supercomputer cluster NUST "MISiS'' provided by Materials Modeling and Development Laboratory and to the Joint Supercomputer Center of the Russian Academy of Sciences . - ISSN 1463-9076. - ISSN 1463-9084

РУБ Chemistry, Physical + Physics, Atomic, Molecular & Chemical
Рубрики:
TOTAL-ENERGY CALCULATIONS
   STRUCTURAL EQUATION
   FABRICATION
   NANOWIRES
Аннотация: One dimensional Ta2(Pd/Pt)3(S/Se)8 nanoribbons (TPS-NR) are considered as a promising material in nanoelectronics due to their intrinsic semiconducting electronic properties. In this article, we study the stability of TPS-NR by considering their oxidation process. Our calculations showed that the Ta2(Pd/Pt)3Se8 nanoribbons are more environmentally stable than Ta2(Pd/Pt)3S8-NR. We studied the thermodynamics of the formation of monovacancies and their impact on the electronic properties of TPS-NR. Additionally, the sensing properties of environmentally stable Ta2Pd3Se8 nanoribbons were investigated. The observed changes of the electronic structure and transport properties after the adsorption of CO, NH3 and NO2 molecules reveal the mechanisms of possible application of Ta2Pd3Se8 nanoribbons as a gas sensor. The electronic transport properties of the nanoribbons exhibit a notable response to the presence of gas molecules.

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Держатели документа:
Natl Univ Sci & Technol MISiS, 4 Leninskiy Prospekt, Moscow 119049, Russia.
State Univ, Moscow Inst Phys & Technol, 9 Inst Sky 61, Dolgoprudnyi 141701, Moscow Region, Russia.
RAS, Emanuel Inst Biochem Phys, 4 Kosygin St, Moscow 119334, Russia.
Russian Acad Sci, Fed Res Ctr KSC, Kirensky Inst Phys, Siberian Branch, Krasnoyarsk 660036, Russia.
Siberian Fed Univ, Krasnoyarsk 660041, Russia.

Доп.точки доступа:
Sukhanova, Ekaterina, V; Visotin, M. A.; Высотин, Максим Александрович; Popov, Zakhar, I; Sorokin, Pavel B.; Russian Science FoundationRussian Science Foundation (RSF) [17-72-20223]; RFBRRussian Foundation for Basic Research (RFBR) [17-33-50125 mol_nr]; Ministry of Education and Science of the Russian Federation of the NUST "MISiS" [K2-2019-016]
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