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Antibacterial properties of films of cellulose composites with silver nanoparticles and antibiotics / T. G. Volova [et al.] // Polym Test. - 2018. - Vol. 65. - P. 54-68, DOI 10.1016/j.polymertesting.2017.10.023. - Cited References: 61. - The reported study was funded by Russian Foundation for Basic Research, Government of Krasnoyarsk Territory, Krasnoyarsk Region Science and Technology Support Fund to the research project № 16-43-242024 . The study was supported by the State budget allocated to the fundamental research at the Russian Academy of Sciences (project No AAAA-A17-117013050028-8 ). . - ISSN 0142-9418
Кл.слова (ненормированные):
Bacterial cellulose -- Composites -- Silver nanoparticles -- Antibiotics -- Properties -- Antibacterial activity
Аннотация: The present study describes production of bacterial cellulose composites with silver nanoparticles and antibiotics and compares their properties. Bacterial cellulose (BC) composites synthesized in the culture of the strain of acetic acid bacterium Komagataeibacter xylinus VKPM B-12068 with silver nanoparticles, BC/AgNps, were produced hydrothermally, under different AgNO3 concentrations (0.0001, 0.001, and 0.01 M) in the reaction medium. The presence of silver in the BC/AgNp composites was confirmed by elemental analysis conducted using scanning electron microscopy with a system of X-ray spectral analysis. Analysis showed that the average atomic number of silver particles in composite samples depended on the concentration of AgNO3: as AgNO3 concentration in the reaction solution was increased, silver content in the composites increased from 0.044 to 0.37 mg/cm2. BC composites with amikacin and ceftriaxone were prepared by immersing dry BC films in solutions containing different concentrations of the antibiotics. The surface structure and properties and physicochemical and mechanical characteristics of composites were investigated using SEM, DSC, X-ray analysis, the system for measuring water contact angles, and electromechanical tensile testing machine. The disk-diffusion method and the shake-flask culture method used in this study showed that all experimental composites had pronounced antibacterial activity against E. coli, Ps. eruginosa, K. pneumoniae, and St. aureus, and the BC/antibiotic composites were more active than BC/AgNp ones; S. aureus was the most susceptible to the effect of BC composites. No potential cytotoxicity was detected in any of the BC/AgNp composites in the NIH 3T3 mouse fibroblast cell culture, in contrast to the BC/antibiotic composites. These results suggest that BC composites constructed in the present study hold promise as dressings for managing wounds, including contaminated ones.

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Держатели документа:
Siberian Federal University, 79 Svobodnyi Av., Krasnoyarsk, Russian Federation
Institute of Biophysics SB RAS, Federal Research Center “Krasnoyarsk Science Center SB RAS”, 50/50 Akademgorodok, Krasnoyarsk, Russian Federation
Kirensky Institute of Physics SB RAS, Federal Research Center “Krasnoyarsk Science Center SB RAS”, 43/50 Akademgorodok, Krasnoyarsk, Russian Federation

Доп.точки доступа:
Volova, T. G.; Shumilova, A. A.; Shidlovskiy, I. P.; Nikolaeva, E. D.; Sukovatiy, A. G.; Vasiliev, A. D.; Васильев, Александр Дмитриевич; Shishatskaya, E. I.
}
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    Antimicrobial properties of nanofiltration membranes modified with silver nanoparticles / R. Khaydarov, O. Gapurova, M. Abdukhakimov [et al.] // Emerg. Mater. - 2022. - Vol. 5, Is. 5. - P. 1477-1483, DOI 10.1007/s42247-021-00330-2. - Cited References: 31. - The SEM and TEM analysis was carried out in the SFU Joint Scientific Center under the support of the Ministry of Science and Higher Education of the Russian Federation (#FSRZ-2020-0011) . - ISSN 2522-5731. - ISSN 2522-574X
   Перевод заглавия: Антимикробные свойства нанофильтрационных мембран, модифицированных наночастицами серебра

РУБ Materials Science, Multidisciplinary

Кл.слова (ненормированные):
Nanofiltration -- Membrane -- Silver -- Nanoparticle -- Antimicrobial -- Biofouling -- Polyhexamethylene biguanide
Аннотация: The growth of bacteria and fungi on a nanofiltration (NF) membrane is known to reduce its permeability and lifetime and increase overall energy use. Over the last decade, application of silver nanoparticles (AgNPs) has shown to present a strong potential in preventing biofouling of NF membrane processes. The paper deals with a novel facile method developed to in situ incorporate nanosilver stabilized with the polyhexamethylene biguanide hydrochloride (PHMB) onto the commercial NF membrane surface. The scanning electron microscopy (SEM) investigations confirmed a uniform distribution of AgNPs on the surface of NF membrane although AgNPs tend to agglomerate into nano-sized colloidal clusters. Our results showed that AgNPs had little impact on the performance of the NF membrane, including salt rejection and water permeation properties. To evaluate the antibacterial properties of nanocomposite membranes, a "time-kill" analysis, a microbiological technique for measuring the change in a population of microorganisms under the impact of a specific sample, has been used against representatives of Gram-positive and Gram-negative bacteria. Inductively coupled mass spectrometry (ICP-MS) was used to study kinetics of Ag release from modified NF membrane. Leaching rates of Ag were low that will possibly result in long-established antimicrobial and antifungal properties. The present research offers a potential for its further use as a new type of modified NF membrane mitigating biofouling.

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Держатели документа:
Acad Sci Uzbek, Inst Nucl Phys, 1 Xuroson, Tashkent 100214, Uzbekistan.
JSS Acad Higher Educ & Res, Dept Pharmacol, JSS Coll Pharm, Ooty 643001, Tamil Nadu, India.
Siberian Fed Univ, 79 Svobodny Ave, Krasnoyarsk 660041, Russia.
Fed Res Ctr KSC SB RAS, Kirensky Inst Phys, Akademgorodok 50-38, Krasnoyarsk 5038, Russia.
Fed Res Ctr KSC SB RAS, Sukachev Inst Forest, Akademgorodok 50-28, Krasnoyarsk 660036, Russia.

Доп.точки доступа:
Khaydarov, R.; Gapurova, O.; Abdukhakimov, M.; Sadikov, I.; Garipov, I.; Krishnamurthy, P. T.; Zharkov, S. M.; Жарков, Сергей Михайлович; Zeer, G. M.; Зеер, Галина М.; Abolentseva, P. A.; Prudnikova, S. V.; Evgrafova, S. Y.; SFU Joint Scientific Center; Ministry of Science and Higher Education of the Russian Federation [FSRZ-2020-0011]
}
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Bacterial cellulose (BC) and BC composites: Production and properties / T. G. Volova, S. V. Prudnikova, E. G. Kiselev [et al.] // Nanomaterials. - 2022. - Vol. 12, Is. 2. - Ст. 192, DOI 10.3390/nano12020192. - Cited References: 113. - This research was financially supported by the State Assignment of the Ministry of Science and Higher Education of the Russian Federation No. FSRZ-2020-0006 . - ISSN 2079-4991

РУБ Chemistry, Multidisciplinary + Nanoscience & Nanotechnology + Materials Science, Multidisciplinary + Physics, Applied
Рубрики:
SILVER NANOPARTICLES
GLUCONACETOBACTER-HANSENII
MICROBIAL CELLULOSE
Кл.слова (ненормированные):
bacterial cellulose -- composites -- production -- properties
Аннотация: The synthesis of bacterial cellulose (BC) by Komagataeibacter xylinus strain B-12068 was investigated on various C-substrates, under submerged conditions with stirring and in static surface cultures. We implemented the synthesis of BC on glycerol, glucose, beet molasses, sprat oil, and a mixture of glucose with sunflower oil. The most productive process was obtained during the production of inoculum in submerged culture and subsequent growth of large BC films (up to 0.2 m2 and more) in a static surface culture. The highest productivity of the BC synthesis process was obtained with the growth of bacteria on molasses and glycerol, 1.20 and 1.45 g/L per day, respectively. We obtained BC composites with silver nanoparticles (BC/AgNPs) and antibacterial drugs (chlorhexidine, baneocin, cefotaxime, and doripenem), and investigated the structure, physicochemical, and mechanical properties of composites. The disc-diffusion method showed pronounced antibacterial activity of BC composites against E. coli ATCC 25922 and S. aureus ATCC 25923.

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Держатели документа:
Siberian Fed Univ, Sch Fundamental Biol & Biotechnol, 79 Svobodny Pr, Krasnoyarsk 660041, Russia.
RAS, Krasnoyarsk Sci Ctr SB, Fed Res Ctr, Inst Biophys SB, 50-50 Akademgorodok, Krasnoyarsk 660036, Russia.
RAS, Krasnoyarsk Sci Ctr SB, Fed Res Ctr, LV Kirensky Inst Phys SB, 50-38 Akademgorodok, Krasnoyarsk 660036, Russia.
Russian Acad Sci, Siberian Branch, Krasnoyarsk Sci Ctr, Fed Res Ctr, 50 Akademgorodok, Krasnoyarsk 660036, Russia.
Siberian Fed Univ, Sch Petr & Gas Engn, 79 Svobodny Pr, Krasnoyarsk 660041, Russia.

Доп.точки доступа:
Volova, Tatiana G.; Prudnikova, Svetlana V.; Kiselev, Evgeniy G.; Nemtsev, I. V.; Немцев, Иван Васильевич; Vasiliev, A. D.; Васильев, Александр Дмитриевич; Kuzmin, Andrey P.; Shishatskaya, Ekaterina I.; Ministry of Science and Higher Education of the Russian Federation [FSRZ-2020-0006]
}
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Bikbaev, R. G.
The optical Tamm states at the interface between a photonic crystal and nanoporous silver / R. G. Bikbaev, S. Ya. Vetrov, I. V. Timofeev // J. Opt. - 2017. - Vol. 19, Is. 1. - Ст. 015104, DOI 10.1088/2040-8986/19/1/015104. - Cited References: 38. - The reported study was funded by Russian Foundation for Basic Research, Government of Krasnoyarsk Territory, Krasnoyarsk Region Science and Technology Support Fund to the research project № 16-42-243065, SB RAS No. II.2P (0358-2015-0010), the Ministry of Education and Science of the Russian Federation, projects no. 3.1276.2014/K and no. 3.1211.2017/PCH. I.V.T. acknowledges financial support from RFBR research project № 15-02-03838. . - ISSN 2040-8978
Кл.слова (ненормированные):
photonic crystal -- nanoporous silver -- optical Tamm state -- effective permittivity
Аннотация: The optical Tamm states (OTSs) localized at the edges of a photonic crystal bounded by a nanoporous silver (NPS) film are investigated. NPS involves spherical vacuum nanopores dispersed in the metal matrix and is characterized by the effective resonance permittivity. The transmission, reflection, and absorption spectra of the structures under study at the normal incidence of light are calculated. It is shown that each Tamm state has its own frequency range where the real part of effective permittivity is negative. The light field localization at the high- and low-frequency OTSs is investigated. The specific features of spectral manifestation of the OTSs are studied in dependence on the nanopore concentration in the metal matrix and on the NPS film thickness.

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

Доп.точки доступа:
Vetrov, S. Ya.; Ветров, Степан Яковлевич; Timofeev, I. V.; Тимофеев, Иван Владимирович
}
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Bio-functionalization of phytogenic Ag and ZnO nanobactericides onto cellulose films for bactericidal activity against multiple drug resistant pathogens / S. Baker [et al.] // J. Microbiol. Methods. - 2019. - Vol. 159. - P. 42-50, DOI 10.1016/j.mimet.2019.02.009. - Cited References: 59 . - ISSN 0167-7012. - ISSN 1872-8359

РУБ Biochemical Research Methods + Microbiology
Рубрики:
SILVER NANOPARTICLES
   ANTIMICROBIAL ACTIVITY
   SIZE
   COMPOSITES
   MEMBRANE
Кл.слова (ненормированные):
Bupleurum aureum -- Rio-functionalization -- Silver nanobactericides -- Zinc oxide nanobactericides -- Multi-drug resistance pathogens -- Bacterial cellulose
Аннотация: The present study describes the synthesis of silver and zinc oxide nanobactericides from the phytogenic source Bupleurum aureum The synthesized nanobactericides were characterized and evaluated for bio-functionalization onto bacterial cellulose membrane which was synthesized by Komagataeibactencylinus B-12068 culture strain. The synthesis of nanobacterides were initially confirmed using UV-Visible spectroscopy which indicated localized surface resonance (LSPR) peaks at 415 nm for silver nanobactericides and 280 nm for zinc nanobactericides. The nature of the capping agent for synthesized nanobactericides was predicted using FTIR which confirmed the presence of functional moieties. XRD analysis revealed their crystalline nature while morphological characteristics were studied using TEM which confirmed the polydispersity of nanobactericides with the average size in the range of 20-25 nm. The nanobactericides were tested for their antimicrobial activity against seven multi-drug resistant pathogens which were clinically isolated from patients suffering from a myriad of microbial infections. The tested pathogens had antimicrobial resistance to ten different antibiotics and have been reported to be the major cause of nosocomial infections. The nanobactericides displayed significant activity against the test pathogens. Silver nanobactericides showed the highest activity against Escherichia coli strain 55 with a 24 mm zone of inhibition while zinc oxide nanobactericides displayed the highest activity against methicillinresistant Staphylococcus aureus (MRSA) with a 20 mm inhibition zone. The bio- functionalized cellulose films (BCF) were characterized using SEM along with physicochemical analysis. The BCF's were evaluated for anti-bacterial activity against test pathogens which resulted in marked antimicrobial potential against multi-drug resistant bacteria and therefore has the potential to be utilized as an efficient alternative to counter drug resistant pathogens.

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Держатели документа:
Siberian Fed Univ, 79 Svobodny Pr, Krasnoyarsk 660041, Russia.
Siberian Fed Univ, Sch Fundamental Biol & Biotechnol, Krasnoyarsk, Russia.
Krasnoyasrk State Med Univ, Dept Microbiol, Krasnoyarsk Partizana Zheleznyakast 1, Krasnoyarsk 660022, Russia.
RAS, KSC SB, Fed Res Ctr, Kirensky Inst Phys, Akademgorodok 50,Bld 38, Krasnoyarsk 660036, Russia.
Siberian Fed Univ, Sch Petr & Nat Gas Engn, Krasnoyarsk, Russia.

Доп.точки доступа:
Baker, Syed; Prudnikova, Svetlana V.; Shumilova, Anna A.; Perianova, Olga V.; Zharkov, S. M.; Жарков, Сергей Михайлович; Kuzmin, A.
}
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    Bio-hybridization of nanobactericides with cellulose films for effective treatment against members of ESKAPE multi-drug-resistant pathogens / S. Baker [et al.] // Appl. Nanosci. - 2018. - Vol. 8, Is. 5. - P. 1101-1110, DOI 10.1007/s13204-018-0717-9. - Cited References: 51. - Authors are thankful for Ministry of Education and Science of the Russian Federation for providing funding under the scheme of 5-100: Russian Academic Excellence Project. Authors are grateful for facilities provided by Siberian Federal University to carry out the present study. . - ISSN 2190-5509. - ISSN 2190-5517
   Перевод заглавия: Биогибридизация нано-бактерицидов с целлюлозными пленками для эффективного воздействия на представителей группы патогенов ESKAPE, резистентных к различным препаратам

РУБ Nanoscience & Nanotechnology
Рубрики:
SILVER NANOPARTICLES
BACTERIAL CELLULOSE
ANTIBIOTIC-RESISTANCE
Кл.слова (ненормированные):
ESKAPE -- Bio-hybridization -- Silver nanobactericides -- Phytogenic -- Bactericidal activity
Аннотация: The rapid expansion of drug-resistant pathogens has created huge global impact and development of novel antimicrobial leads is one of the top priority studies in the current scenario. The present study aims to develop bio-hybridized nanocellulose films which comprise of phytogenic silver nanobactericides. The nanobactericides were synthesized by treating 1 mM silver nitrate with aqueous extract of Chamerion angustifolium which reduced the metal salt to produce polydispersed nanobactericides which were tested against the members of ESKAPE drug-resistant communities. The synthesized silver nanobactericides were subjected to characterization with UV–visible spectra which displayed maximum absorbance at 408 nm. The bio-molecular interaction of phyto-constituents to mediate synthesis and stabilization of nanobactericides was studied with Fourier-transform infrared spectroscopy (FTIR) which depicted functional groups associated with nanobactericides. The crystalline nature was studied with X-ray diffraction (XRD) which showed Bragg’s intensities at 2θ angle which denoted (111), (200), (220), and (311) planes. The morphological characteristics of silver nanobactericides were defined with transmission electron Microscopy (TEM) image which displayed polydispersity of silver nanobactericides with size ranging from 2 to 40 nm. The synthesized nanobactericides showed a significant activity against MRSA strain with 21 mm zone of inhibition. The minimal inhibitory concentration of silver nanobactericides to inhibit the growth of test pathogens was also determined which ranged between 0.625 and 1.25 μg/ml. The silver nanobactericides were bio-hybridized onto nanocellulose films produced by Komagataeibacter xylinus B-12068 culture strain. The films were dried to determine the mechanical properties which showed increased in Young’s modulus and tensile strength in comparison with control bacterial cellulose films. Overall, the results obtained in the present investigation are promising enough to report bactericidal activity of bio-hybridized nanobactericidal films against ESKAPE. These communities are reported to cause severe threats to all forms of lives irrespective to their habitats which can lead to huge economical crisis.

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Держатели документа:
Siberian Fed Univ, Lab Biotechnol New Mat, Svobodnyy Pr 79, Krasnoyarsk 660041, Russia.
SB RAS, Krasnoyarsk Sci Ctr, Fed Res Ctr, Inst Biophys, 50-50 Akademgorodok, Krasnoyarsk 660036, Russia.
Siberian Fed Univ, 79 Svobodny Pr, Krasnoyarsk 660041, Russia.
Siberian Fed Univ, Sch Fundamental Biol & Biotechnol, Krasnoyarsk, Russia.
Krasnoyasrk State Med Univ, Dept Microbiol, Krasnoyarsk Partizana Zheleznyaka St 1, Krasnoyarsk 660022, Russia.
SB RAS, Fed Res Ctr KSC, Kirensky Inst Phys, Akademgorodok 50,Bld 38, Krasnoyarsk 660036, Russia.
Siberian Fed Univ, Sch Petr & Nat Gas Engn, Krasnoyarsk, Russia.

Доп.точки доступа:
Baker, Syed; Volova, Tatiana; Prudnikova, Svetlana V.; Shumilova, Anna A.; Perianova, Olga, V; Zharkov, S. M.; Жарков, Сергей Михайлович; Kuzmin, A. R.; Kondratenka, Olga; Kiryukhin, Bogdan; Shidlovskiy, Ivan P.; Potkina, Zoya K.; Khohlova, Olga Y.; Lobova, Tatiana I.; Ministry of Education and Science of the Russian Federation under the scheme of 5-100: Russian Academic Excellence Project
}
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Comparative characteristics of alternating current light source with copper and silver electrodes under power samples analysis / Н. Г. Внукова, В. А. Лопатин [et al.] // Современный атомно-эмиссионный анализ и науки о земле : программа и тезисы докл. науч. семинара с междунар. участием, посвящ. 150-летию создания Кирхгофом и Бунзеном основ атом. спектроскопии, 30 июня - 4 июля 2009 г., г. Иркутск / [отв. ред.: Е. В. Шабанова, О. В. Зарубина]. - 2009. - С. 17-18 . - ISBN 978-5-94797-139-2

Держатели документа:
Институт физики им. Л.В. Киренского СО РАН

Доп.точки доступа:
Внукова, Наталья Григорьевна; Vnukova, N. G.; Лопатин, Владислав Александрович; Lopatin, V. A.; Осипова, Ирина Владимировна; Osipova, I. V.; Чурилов, Григорий Николаевич; Churilov, G. N.; "Современный атомно-эмиссионный анализ и науки о земле", семинар(2009 ; июнь-июль ; Иркутск); Российская академия наук; Сибирское отделение РАН; Иркутский научынй центр СО РАН; Институт геохимии им. А. П. Виноградова СО РАН
}
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    Crystal and electronic structure, thermochemical and photophysical properties of europium-silver sulfate monohydrate AgEu(SO4)2·H2O / Y. G. Denisenko, A. E. Sedykh, M. S. Molokeev [et al.] // J. Solid State Chem. - 2021. - Vol. 294. - Ст. 121898, DOI 10.1016/j.jssc.2020.121898. - Cited References: 54. - This work was partially supported by the Russian Foundation for Basic Research (Grant 19-33-90258∖19 ). Use of equipment of Krasnoyarsk Regional Center of Research Equipment of Federal Research Center « Krasnoyarsk Science Center SB RAS» is acknowledged . - ISSN 0022-4596
   Перевод заглавия: Кристаллическая и электронная структура, термохимические и фотофизические свойства моногидрата сульфата европия-серебра AgEu(SO4)2·H2O
Кл.слова (ненормированные):
Structure -- Thermochemistry -- Luminescence -- Sulfates -- Europium
Аннотация: In order to synthesize single crystals of europium-silver double sulfate monohydrate, a hydrothermal reaction route was used. It was found that the crystallization cannot be performed under standard conditions. The compound AgEu(SO4)2·H2O crystallizes in the trigonal crystal system, space group P3221 (a = 6.917(1), c = 12.996(2) Å, V = 538.53(17) Å3). The structure consists of triple-capped trigonal prisms [EuO9], in which one oxygen atom belongs to crystalline water, silver octahedra [AgO6], and sulfate tetrahedra [SO4]. The hydrogen bonds in the system additionally stabilize the structure. The electronic band structure wasstudied by density functional theory calculations which show that AgEu(SO4)2·H2O is an indirect band gap dielectric. Temperature dependent photoluminescence spectroscopy shows emission bands of transitions from the 5D0 state to the spin-orbit components of the 7FJmultiplet (J = 0–6).The ultranarrow transition 5D0 - 7F0 shows a red shift with respect to other europium-containing water-free sulfates that is ascribed to the presence of OH group in the crystal structure in the close vicinity of the Eu3+ ion. An effect of abnormal sensitivity of the Ω4 intensity factor to minor distortions of the local environment is detected for the observed low local symmetry of C2.

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Держатели документа:
Institute of Chemistry, Tyumen State University, Tyumen, 625003, Russian Federation
Institute of Inorganic and Analytical Chemistry, Justus-Liebig-University of Giessen, Giessen35392, Germany
Department of General and Special Chemistry, Industrial University of Tyumen, Tyumen, 625000, Russian Federation
Center for Materials Research (LaMa), Justus-Liebig-University of Giessen, Giessen35392, Germany
Laboratory of Crystal Physics, Kirensky Institute of Physics, Federal Research Center KSC SB RAS, Krasnoyarsk, 660036, Russian Federation
Siberian Federal University, Krasnoyarsk, 660041, Russian Federation
Department of Physics, Far Eastern State Transport University, Khabarovsk, 680021, Russian Federation
Laboratory of Molecular Spectroscopy, Kirensky Institute of Physics Federal Research Center KSC SB RAS, Krasnoyarsk, 660036, Russian Federation
Laboratory of Coherent Optics, Kirensky Institute of Physics Federal Research Center KSC SB RAS, Krasnoyarsk, 660036, Russian Federation
Institute of Nanotechnology, Spectroscopy and Quantum Chemistry, Siberian Federal University, Krasnoyarsk, 660041, Russian Federation
Komissarov Department of General Chemistry, Northen Trans-Ural Agricultural University, Tyumen, 625003, Russian Federation
Laboratory of the Chemistry of Rare Earth Compounds, Institute of Solid State Chemistry, UB RAS, Ekaterinburg, 620137, Russian Federation

Доп.точки доступа:
Denisenko, Y. G.; Sedykh, A. E.; Molokeev, M. S.; Молокеев, Максим Сергеевич; Oreshonkov, A. S.; Орешонков, Александр Сергеевич; Aleksandrovsky, A. S.; Александровский, Александр Сергеевич; Krylov, A. S.; Крылов, Александр Сергеевич; Khritokhin, N. A.; Sal'nikova, E. I.; Andreev, O. V.; Muller-Buschbaum, K.
}
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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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10.

Electromagnetic density of states and absorption of radiation by aggregates of nanospheres with multipole interactions / V. A. Markel [et al.] // Phys. Rev. B. - 2004. - Vol. 70, Is. 5. - Ст. 54202, DOI 10.1103/PhysRevB.70.054202. - Cited References: 81 . - ISSN 1098-0121

РУБ Physics, Condensed Matter
Рубрики:
DISCRETE-DIPOLE APPROXIMATION
   ENHANCED RAMAN-SCATTERING
   METAL FRACTAL CLUSTERS
   OPTICAL-PROPERTIES
   SELECTIVE PHOTOMODIFICATION
   DISORDERED CLUSTERS
   NUMERICAL-SIMULATION
   SPECTRAL DEPENDENCE
   PARTICULATE MATTER
   LIGHT-SCATTERING
Кл.слова (ненормированные):
carbon -- iron -- palladium -- silver -- article -- dipole -- electromagnetic field -- geometry -- mathematical analysis -- molecular interaction -- nanoparticle -- radiation absorption
Аннотация: We calculate the quasistatic electromagnetic density of states for aggregates of touching spheres, in particular, linear chains and computer-generated random fractal aggregates. Multipole moments with orders of up to L=64 are taken into account for random aggregates with the number of particles of up to N=100 and up to L=8000 for linear chains. Extensive comparisons with the dipole approximation and geometrical cluster renormalization method are performed. Extinction spectra are calculated for several metals and black carbon. Long wavelength electromagnetic properties of fractal aggregates are considered in details.

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Держатели документа:
Univ Penn, Dept Radiol, Philadelphia, PA 19104 USA
Jackson State Univ, Dept Phys, Jackson, MS 39217 USA
Russian Acad Sci, LV Kirensky Phys Inst, Siberian Branch, Krasnoyarsk 660036, Russia
Moscow Inst Phys & Technol, Dolgoprudnyi 141700, Russia
Krasnoyarsk State Tech Univ, Dept Phys & Engn, Krasnoyarsk 660028, Russia
Natl Acad Sci Ukraine, Inst Surface Chem, UA-03164 Kiev, Ukraine
ИФ СО РАН
Department of Radiology, University of Pennsylvania, Philadelphia, PA 19104, United States
Department of Physics, Jackson State University, Jackson, MS 39217, United States
L. V. Kirensky Institute of Physics, Russian Academy of Sciences, Siberian Branch, Krasnoyarsk 660036, Russian Federation
Moscow Inst. of Phys. and Technology, Dolgoprudny, Moscow Region 141700, Russian Federation
Dept. of Physics, and Engineering, Krasnoyarsk State Tech. University, Krasnoyarsk 660028, Russian Federation
Institute of Surface Chemistry, Natl. Academy of Sciences of Ukraine, 17 General Naumov St., 03164 Kiev, Ukraine

Доп.точки доступа:
Markel, V. A.; Pustovit, V. N.; Karpov, S. V.; Карпов, Сергей Васильевич; Obuschenko, A. V.; Gerasimov, V. S.; Герасимов, Валерий Сергеевич; Isaev, I. L.; Исаев, Иван Леонидович
}
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