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Brownian dynamic of laser cooling and crystallization of electron-ion plasma / A. P. Gavriliuk [et al.] // Phys. Rev. E. - 2009. - Vol. 80, Is. 5. - Ст. 56404, DOI 10.1103/PhysRevE.80.056404. - Cited References: 29 . - ISSN 1539-3755

РУБ Physics, Fluids & Plasmas + Physics, Mathematical
Рубрики:
ULTRACOLD NEUTRAL PLASMAS
   OPTICAL MOLASSES
   LIQUIDS
   ATOMS
   TRAP
Кл.слова (ненормированные):
Brownian motion -- laser cooling -- plasma collision processes -- plasma light propagation -- plasma nonlinear processes -- plasma simulation -- plasma transport processes -- Brownian Dynamics -- Brownian dynamics simulations -- Electron ion plasma -- Electron subsystem -- Friction force -- Ionic structure -- Nonlinear dependence -- Plasma cooling -- Brownian movement -- Crystallization -- Ions -- Laser cooling -- Lasers -- Cooling
Аннотация: Laser cooling and crystallization of electron-ion plasma is studied using the Brownian dynamics simulation technique and taking into consideration the interaction of ions with the electron subsystem. It has been shown that the nonlinear dependence of laser friction force on the velocity of ions has to be taken into account in order to simulate in an adequate manner the cooling dynamics and obtain a correct estimate for minimum temperatures. It has been found that times required for formation of an ordered ionic structure can be much longer than the typical plasma cooling time.

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Держатели документа:
[Gavriliuk, A. P.
Krasnov, I. V.
Shaparev, N. Ya.] Russian Acad Sci, Inst Computat Modeling, Krasnoyarsk, Russia
[Isaev, I. L.
Karpov, S. V.] Russian Acad Sci, LV Kirensky Phys Inst, Krasnoyarsk, Russia
[Karpov, S. V.] Siberian Fed Univ, Krasnoyarsk, Russia
ИФ СО РАН
Institute of Computational Modeling, Russian Academy of Sciences, Krasnoyarsk, Russian Federation
L.V. Kirenskiy Institute of Physics, Russian Academy of Sciences, Krasnoyarsk, Russian Federation
Siberian Federal University, Krasnoyarsk, Russian Federation

Доп.точки доступа:
Gavriliuk, A. P.; Isaev, I. L.; Исаев, Иван Леонидович; Karpov, S. V.; Карпов, Сергей Васильевич; Krasnov, I. V.; Shaparev, N. Y.
}
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Brownian dynamics of laser cooling of rarefied electron-ion plasma / Gavrilyuk A.P.Isaev I.l. [et al.] // The 9-th Russian-Chinese symposium on laser physics and laser technologies : the Conference on lasers and laser technologies for students and young investigators (to the memory of professor N. A. Prilezhaeva, founder of Tomsk school of spectroscopic thought and laser physics) : 26-31 October, 2008, Tomsk, Russia : [proceedings]. - 2008. - p. 2 . - ISBN 5-94621-255-9

Доп.точки доступа:
Gavrilyuk, A. P.; Гаврилюк, Анатолий Петрович; Isaev, I. l.; Исаев, Иван Леонидович; Karpov, S. V.; Карпов, Сергей Васильевич; Krasnov, I. V.; Shaparev, N. Ya.; Шапарев, Николай Якимович; Russian-Chinese symposium on laser physics and laser technologies(9 ; 2008 ; Oct. ; Tomsk)
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Cинтез плазмонно-резонансных нановолноводов оптического излучения на диэлектрической подложке в условиях ее электростатической функционализации / С. В. Карпов, И. Л. Исаев [и др.] // Ультрадисперсные порошки, наноструктуры, материалы: получение, свойства, применение. V Ставеровские чтения : труды Всерос. науч.-технич. конф. с междунар. участием, 15-16 октября 2009 г., Красноярск. - Красноярск : СФУ, 2009. - С. 210-211

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

Доп.точки доступа:
Карпов, Сергей Васильевич; Karpov, S. V.; Исаев, Иван Леонидович; Isaev, I. L.; Герасимов, Валерий Сергеевич; Gerasimov V. S.; Грачев, Александр Сергеевич; Рассказов, И. С; Ципотан, Алексей Сергеевич; "Ультрадисперсные порошки, наноструктуры, материалы", Всероссийская научно-техническая конференция(5 ; 2009 ; сент. ; Красноярск); Ставеровские чтения(5 ; 2009 ; сент. ; Красноярск)
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Cпонтанная кристаллизация наноструктурированных золей металлов и ее кинетика / С. В. Карпов, И. Л. Исаев, А. П. Гаврилюк [и др.] // Моделирование неравновесных систем - 2008 : материалы Одиннадцатого Всероссийского семинара : 26-28 сентября 2008 г. - 2011. - С. 114-116

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

Доп.точки доступа:
Карпов, Сергей Васильевич; Karpov, S.V.; Исаев, Иван Леонидович; Isaev, I. L.; Гаврилюк, Анатолий Петрович; Gavrilyuk A.P.; Герасимов, Валерий Сергеевич; Gerasimov V. S.; Грачев, Александр Сергеевич; "Моделирование неравновесных систем", всероссийский семинар(11 ; 2008 ; сент. ; Красноярск); Институт вычислительного моделирования Сибирского отделения РАН; Сибирский федеральный университет; Институт систем энергетики им. Л. А. Мелентьева СО РАН; Институт физики им. Л.В. Киренского Сибирского отделения РАН
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Effects of size polydispersity on the extinction spectra of colloidal nanoparticle aggregates / A. E. Ershov [et al.] // Phys. Rev. B. - 2012. - Vol. 85, Is. 4. - Ст. 045421. - P. , DOI 10.1103/PhysRevB.85.045421. - Cited References: 41. - This work was supported by grants from the following foundations of the Russian Federation: Presidium of RAS, OFN RAS, and SB RAS. . - ISSN 1098-0121

РУБ Physics, Condensed Matter
Рубрики:
METAL FRACTAL CLUSTERS
   OPTICAL-PROPERTIES
   ABSORPTION
   NONLINEARITIES
   COMPOSITES
   SCATTERING
   PARTICLES
   SPHERES
   GRAINS
Аннотация: We investigate the effect of particle polydispersity on the optical extinction spectra of colloidal aggregates of spherical metallic (silver) nanoparticles, taking into account the realistic interparticle gaps caused by layers of stabilizing polymer adsorbed on the metal surface (adlayers). The spectra of computer-generated aggregates are computed using two different methods. The coupled-multipole method is used in the quasistatic approximation and the coupled-dipole method beyond the quasistatics. The latter approach is applicable if the interparticle gaps are sufficiently wide relative to the particle radii. Simulations are performed for two different particle size distribution functions (bimodal and Gaussian), varying the number of particles per aggregate, and different distribution functions of the interparticle gap width. The strong influence of the latter factor on the spectra is demonstrated and investigated in detail.

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Держатели документа:
[Ershov, Alexander E.
Isaev, Ivan L.
Semina, Polina N.
Karpov, Sergei V.] Russian Acad Sci, LV Kirensky Phys Inst, Krasnoyarsk 660036, Russia
[Ershov, Alexander E.
Karpov, Sergei V.] Siberian Fed Univ, Krasnoyarsk 660041, Russia
[Markel, Vadim A.] Univ Penn, Dept Bioengn, Dept Radiol, Philadelphia, PA 19104 USA
[Markel, Vadim A.] Univ Penn, Grad Grp Appl Math & Computat Sci, Philadelphia, PA 19104 USA

Доп.точки доступа:
Ershov, A. E.; Ершов, Александр Евгеньевич; Isaev, I. L.; Исаев, Иван Леонидович; Semina, P. N.; Семина, Полина Николаевна; Markel, V. A.; Karpov, S. V.; Карпов, Сергей Васильевич
}
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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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Local anisotropy and giant enhancement of local electromagnetic fields in fractal aggregates of metal nanoparticles / S. V. Karpov [et al.] // Phys. Rev. B. - 2005. - Vol. 72, Is. 20. - Ст. 205425, DOI 10.1103/PhysRevB.72.205425. - Cited References: 56 . - ISSN 1098-0121

РУБ Physics, Condensed Matter
Рубрики:
SMALL-PARTICLE COMPOSITES
   DIFFUSION-LIMITED AGGREGATION
   OPTICAL-PROPERTIES
   SELECTIVE PHOTOMODIFICATION
   NUMERICAL-SIMULATION
   DISORDERED CLUSTERS
   ABSORPTION-SPECTRUM
   PARTICULATE MATTER
   NONLINEAR OPTICS
   LIGHT-SCATTERING
Аннотация: We have shown within quasistatic approximation that the giant fluctuations of a local electromagnetic field in random fractal aggregates of silver nanospheres are strongly correlated with a local anisotropy factor S which is defined in this paper. The latter is a purely geometrical parameter which characterizes the deviation of local environment of a given nanosphere in an aggregate from spherical symmetry. Therefore, it is possible to predict the sites with anomalously large local fields in an aggregate without explicitly solving the electromagnetic problem. We have also demonstrated that the average (over nanospheres) value of S does not depend noticeably on the fractal dimension D, except when D approaches the trivial limit D=3. In this case, as one can expect, the average local environment becomes spherically symmetrical and S approaches zero. This corresponds to the well-known fact that in trivial aggregates, fluctuations of local electromagnetic fields are much weaker than in fractal aggregates. Thus, we find that, within the quasistatics, the large-scale geometry does not have a significant impact on local electromagnetic responses in nanoaggregates in a wide range of fractal dimensions. However, this prediction is expected not to be correct in aggregates which are sufficiently large for the intermediate- and radiation-zone interaction of individual nanospheres to become important.

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Держатели документа:
Russian Acad Sci, LV Kirensky Phys Inst, Siberian Branch, Krasnoyarsk 660036, Russia
Krasnoyarsk State Tech Univ, Dept Phys & Engn, Krasnoyarsk 660028, Russia
Univ Penn, Dept Radiol, Philadelphia, PA 19104 USA
Univ Penn, Dept Bioengn, Philadelphia, PA 19104 USA
ИФ СО РАН
L. V. Kirensky Institute of Physics, Russian Academy of Sciences, Siberian Branch, Krasnoyarsk 660036, Russian Federation
Department of Physics and Engineering, Krasnoyarsk State Technical University, Krasnoyarsk 660028, Russian Federation
Departments of Radiology and Bioengineering, University of Pennsylvania, Philadelphia, PA 19104, United States

Доп.точки доступа:
Karpov, S. V.; Карпов, Сергей Васильевич; Gerasimov, V. S.; Герасимов, Валерий Сергеевич; Isaev, I. L.; Исаев, Иван Леонидович; Markel, V. A.
}
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Spectroscopic studies of fractal aggregates of silver nanospheres undergoing local restructuring / S. V. Karpov [et al.] // J. Chem. Phys. - 2006. - Vol. 125, Is. 11. - Ст. 111101, DOI 10.1063/1.2229202. - Cited References: 30 . - ISSN 0021-9606

РУБ Physics, Atomic, Molecular & Chemical
Рубрики:
ENHANCED RAMAN-SCATTERING
   SMALL-PARTICLE COMPOSITES
   OPTICAL-PROPERTIES
   DISORDERED CLUSTERS
   NONLINEAR OPTICS
   LOCALIZATION
   NANOPARTICLES
   EIGENMODES
   BOUNDS
Кл.слова (ненормированные):
Large-scale fractal geometry -- Nonlinear optical responses -- Restructuring -- Silver nanospheres -- Aggregates -- Colloids -- Electromagnetic fields -- Fractals -- Nonlinear optics -- Sampling -- Spectroscopic analysis -- Silver
Аннотация: We present an experimental spectroscopic study of large random colloidal aggregates of silver nanoparticles undergoing local restructuring. We argue that such well-known phenomena as strong fluctuation of local electromagnetic fields, appearance of "hot spots" and enhancement of nonlinear optical responses depend on the local structure on the scales of several nanosphere diameters, rather than the large-scale fractal geometry of the sample. (c) 2006 American Institute of Physics.

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Держатели документа:
Russian Acad Sci, LV Kirensky Phys Inst, Siberian Branch, Krasnoyarsk 660036, Russia
Krasnoyarsk State Tech Univ, Dept Phys & Engn, Krasnoyarsk 660028, Russia
Univ Penn, Dept Radiol, Philadelphia, PA 19104 USA
Univ Penn, Dept Bioengn, Philadelphia, PA 19104 USA
ИФ СО РАН
L. V. Kirensky Institute of Physics, Russian Academy of Sciences, Siberian Branch, Krasnoyarsk 660036, Russian Federation
Department of Physics and Engineering, Krasnoyarsk State Technical University, Krasnoyarsk 660028, Russian Federation
Departments of Radiology and Bioengineering, University of Pennsylvania, Philadelphia, PA 19104, United States

Доп.точки доступа:
Karpov, S. V.; Карпов, Сергей Васильевич; Gerasimov, V. S.; Герасимов, Валерий Сергеевич; Isaev, I. L.; Исаев, Иван Леонидович; Markel, V. A.
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Towards understanding the triggering of the malignant cell death in high-efficiency magneto-mechanical anticancer therapy / P. N. Semina, I. L. Isaev, S. K. Komogortsev [et al.] // J. Phys. D. - 2023. - Vol. 56, Is. 6. - Ст. 065401, DOI 10.1088/1361-6463/acb0dd. - Cited References: 146. - P N S, A S K, D E K, S P P, S V K acknowledge the support by the Ministry of Science and High Education of Russian Federation (Project No. FSRZ-2020-0008). Experimental analyses were funded by the Ministry of Science and Higher Education of the Russian Federation (Project FWES-2022-0005) – A S K, T N Z. The authors thank Dr S V Saikova for providing the TEM image in figure (b) . - ISSN 0022-3727. - ISSN 1361-6463
Кл.слова (ненормированные):
magnetic nanoparticle -- malignant cell membrane -- apoptosis -- anticancer therapy -- aptamer
Аннотация: The paper discusses schemes for the implementation of magneto-mechanical anticancer therapy and the most probable scenarios of damaging mechanical eﬀects on the membranes of malignant cells by targeted magnetic nanoparticles selectively bound to membrane mechanoreceptors employing aptamers. The conditions for selective triggering of the malignant cell apoptosis in a low-frequency non-heating alternating magnetic ﬁeld, corresponding to the exceeding threshold value of the force acting on the membrane and its mechanoreceptors, are established using a nanoparticle dynamic simulation. The requirements for the functionality of magnetic nanoparticles and their suitability for biomedical applications are analysed. Attention is paid to the possibility of the formation of magnetite nanoparticle aggregates in an external magnetic ﬁeld and their localization near tumor cell membranes. It is shown that the scenario involving the process of aggregation of magnetite nanoparticles provides a suﬃcient magneto-mechanical impact to achieve a therapeutic eﬀect. A possible explanation for the experimentally established fact of successful application of magneto-mechanical therapy using magnetite nanoparticles is presented, in which complete suppression of the Ehrlich carcinoma in an alternating magnetic ﬁeld as a response to a magnetome-chanical stimulus was demonstrated. This result conﬁrmed the possibility of using the method for high eﬃciency treatment of malignant neoplasms. The paper is provided with an extensive review of key publications and the state of art in this area.

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Держатели документа:
International Research Center of Spectroscopy and Quantum Chemistry—IRC SQC, Siberian Federal University, Krasnoyarsk 660041, Russia
Institute of Computational Modelling of the Siberian Branch of the Russian Academy of Sciences, Krasnoyarsk 660036, Russia
L. V. Kirensky Institute of Physics, Federal Research Center KSC the Siberian Branch of the Russian Academy of Sciences, Krasnoyarsk 660036, Russia
Prof. V.F. Voino-Yasenetsky Krasnoyarsk State Medical University, Krasnoyarsk 660022, Russia
Federal Research Center "Krasnoyarsk Science Center" of the Siberian Branch of the Russian Academy of Sciences, Krasnoyarsk 660036, Russia
Siberian Federal University, Krasnoyarsk 660041, Russia
Tomsk State University, Tomsk 634050, Russia
Federal Siberian Research Clinical Center, Federal Medical Biological Agency of Russian Federation, Krasnoyarsk 660037, Russia

Доп.точки доступа:
Semina, P. N.; Семина, Полина Николаевна; Isaev, I. L.; Исаев, Иван Леонидович; Komogortsev, S. V.; Комогорцев, Сергей Викторович; Klyuchantsev, A. B.; Ключанцев, А. Б.; Kostyukov, A. S.; Blagodatova, A. V.; Khrennikov, D. E.; Kichkailo, A. S.; Кичкайло, Анна Сергеевна; Zamay, T. N.; Замай, Т. Н.; Lapin, I. N.; Sokolov, A. Е.; Соколов, Алексей Эдуардович; Polyutov, S. P.; Полютов, Сергей Петрович; Karpov, S. V.; Карпов, Сергей Васильевич
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10.

Влияние дефектов коллоидных кристаллов на их спектры плазмонного поглощения / С.В Карпов, И. Л. Исаев [и др.] // Опто-, наноэлектроника, нанотехнологии и микросистемы : Махачкала, 25-29 мая 2009 г. : тезисы докл. XI международной конференции. - Махачкала, 2009. - С. 149

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

Доп.точки доступа:
Карпов, Сергей Васильевич; Karpov, S. V.; Исаев, Иван Леонидович; Isaev I .L.; Герасимов, Валерий Сергеевич; Gerasimov V. S.; Грачев, Александр Сергеевич; Гаврилюк, Анатолий Петрович; Gavrilyuk A.P.; "Опто-, наноэлектроника, нанотехнологии и микросистемы", международная конференция(11 ; 2009 ; май ; Махачкала); "Opto-, nanoelectronics, nanotechnology, and microsystems", International Conference(11 ; 2009 ; May ; Makhachkala); Институт нанотехнологий микроэлектроники РАН; Дагестанский государственный университет
}
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