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Спектры плазмонного поглощения дефектных коллоидных кристаллов / С. Карпов, Гаврилюк . [и др.] // Многомасштабное моделирование процессов и структур в нанотехнологиях : [сб. тезисов докл II Всерос. конф. : 28-30 мая 2009 г., Москва]. - С. 123-124

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

Доп.точки доступа:
Карпов, Сергей Васильевич; Karpov, S. V.; Гаврилюк, Анатолий Петрович; Gavrilyuk A.P.; Исаев, Иван Леонидович; Isaev, I. L.; Герасимов, Валерий Сергеевич; Gerasimov V. S.; Грачев, Александр Сергеевич; "Многомасштабное моделирование процессов и структур в нанотехнологиях", Всероссийская конференция(2 ; 2009 ; май ; Москва)
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Трансформация структуры неупорядоченных 3D агрегатов наночастиц при их взаимодействии с плоской диэлектрической поверхностью [Текст] / С. В. Карпов, И. Л. Исаев [и др.] // Многомасштабное моделирование процессов и структур в нанотехнологиях : [сб. тезисов докл II Всерос. конф. : 28-30 мая 2009 г., Москва]. - С. 119-120

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, Илья Леонидович; Rasskazov, I. L.; Ципотан, Алексей Сергеевич; "Многомасштабное моделирование процессов и структур в нанотехнологиях", Всероссийская конференция(2 ; 2009 ; май ; Москва)
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Регистрация температурных фазовых переходов коллоидных кристаллов по спектрам плазмонного поглощения / С. В. Карпов, А. П. Гаврилюк [и др.] // Многомасштабное моделирование процессов и структур в нанотехнологиях : [сб. тезисов докл II Всерос. конф. : 28-30 мая 2009 г., Москва]. - С. 121-122

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

Доп.точки доступа:
Карпов, Сергей Васильевич; Karpov, S. V.; Гаврилюк, Анатолий Петрович; Gavrilyuk A.P.; Исаев, Иван Леонидович; Isaev, I. L.; Герасимов, Валерий Сергеевич; Gerasimov V. S.; Грачев, Александр Сергеевич; "Многомасштабное моделирование процессов и структур в нанотехнологиях", Всероссийская конференция(2 ; 2009 ; май ; Москва)
}
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Изменения спектров плазмонного поглощения наноколлоидов в процессе их кристаллизации / С.В Карпов, И. Л. Исаев [и др.] // Многомасштабное моделирование процессов и структур в нанотехнологиях : [сб. тезисов докл II Всерос. конф. : 28-30 мая 2009 г., Москва]. - С. 119-120

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.; "Многомасштабное моделирование процессов и структур в нанотехнологиях", Всероссийская конференция(2 ; 2009 ; май ; Москва)
}
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Самоорганизация наночастиц серебра в плазмонно-резонансные нановолноводы для видимого диапазона спектра на электростатически функционализированных диэлектрических подложках / С. В. Карпов, А. П. Гаврилюк [и др.] // Многомасштабное моделирование процессов и структур в нанотехнологиях : [сб. тезисов докл II Всерос. конф. : 28-30 мая 2009 г., Москва]. - С. 126-127

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

Доп.точки доступа:
Карпов, Сергей Васильевич; Karpov, S. V.; Гаврилюк, Анатолий Петрович; Gavrilyuk A.P.; Исаев, Иван Леонидович; Isaev, I. L.; Герасимов, Валерий Сергеевич; Gerasimov V. S.; Грачев, Александр Сергеевич; Рассказов, Илья Леонидович; Rasskazov, I. L.; Ципотан, Алексей Сергеевич; "Многомасштабное моделирование процессов и структур в нанотехнологиях", Всероссийская конференция(2 ; 2009 ; май ; Москва)
}
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Образование дефектов в коллоидных кристаллах / С. В. Карпов, И. Исаев [и др.] // Многомасштабное моделирование процессов и структур в нанотехнологиях : [сб. тезисов докл II Всерос. конф. : 28-30 мая 2009 г., Москва]. - С. 117-118

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.; "Многомасштабное моделирование процессов и структур в нанотехнологиях", Всероссийская конференция(2 ; 2009 ; май ; Москва)
}
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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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Intense charge transfer plasmons in golden nanoparticle dimers connected by conductive molecular linkers / A. S. Fedorov, M. A. Visotin, A. V. Lukyanenko [et al.] // J. Chem. Phys. - 2024. - Vol. 160, Is. 8. - Ст. 084110, DOI 10.1063/5.0183334. - Cited References: 52. - This study was supported by the Russian Science Foundation, Agreement No. 23-12-20007, and the Government of the Krasnoyarsk Territory and the Krasnoyarsk Territorial Foundation for Support of Scientific and R&D Activities, Agreement No. 256 . - ISSN 0021-9606. - ISSN 1089-7690
Аннотация: Golden nanoparticle dimers connected by conjugated molecular linkers 1,2-bis(2-pyridyl)ethylene are produced. The formation of stable dimers with 22 nm diameter nanoparticles is confirmed by transmission electron microphotography. The possibility of charge transfer through the linkers between the particles in the dimers is shown by the density functional theory calculations. In addition to localized plasmon resonance of solitary nanoparticles with a wavelength of 530 nm, the optical spectra exhibit a new intense absorption peak in the near-infrared range with a wavelength of ∼780 nm. The emergent absorption peak is attributed to the charge-transfer plasmon (CTP) mode; the spectra simulated within the CTP developed model agree with the experimental ones. This resonant absorption may be of interest to biomedical applications due to its position in the so-called transmission window of biological tissues. The in vitro heating of CTP dimer solution by a laser diode with a wavelength of 792 nm proved the efficiency of CTP dimers for achieving a temperature increase of ΔT = 6 °C, which is sufficient for hyperthermia treatment of malignant tumors. This indicates the possibility of using hyperthermia to treat malignant tumors using the material we synthesized.

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Держатели документа:
Kirensky Institute of Physics, Federal Research Center KSC SB RAS, 660036 Krasnoyarsk, Russia
International Research Center of Spectroscopy and Quantum Chemistry – IRC SQC, Siberian Federal University, 660041 Krasnoyarsk, Russia
Siberian Federal University, 660041 Krasnoyarsk, Russia
Institute of Computational Modeling, Federal Research Center KSC SB RAS, 660036 Krasnoyarsk, Russia

Доп.точки доступа:
Fedorov, A. S.; Федоров, Александр Семенович; Visotin, M. A.; Высотин, Максим Александрович; Lukyanenko, A. V.; Лукьяненко, Анна Витальевна; Gerasimov, V. S.; Aleksandrovsky, A. S.; Александровский, Александр Сергеевич
}
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Гос. рег. прогр. для ЭВМ 2023681317 Российская Федерация

Программа визуализации расчётов трансмиссионных свойств плазмонного нановолновода / А. Е. Ершов, B. C. Герасимов, Н. Ю. Игнатова, С. В. Карпов. - № 2023680211 ; Заявл. 03.10.2022 ; Опубл. 12.10.2022 // Программы для ЭВМ. Базы данных. Топологии интегральных микросхем : офиц. бюл. Фед. службы по интеллектуал. собственности (Роспатент). - 2023. - № 10
Аннотация: Программа представляет собой средство для визуализации данных, полученных при помощи Программы расчёта трансмиссионных свойств плазмонного нановолновода. Ввод данных реализован через интерфейс командной строки. На вход программа получает файл формата HDF5 . В результате работы программа визуализирует данные при помощи графического интерфейса библиотеки MATPLOTLIB. Работа выполнена при финансовой поддержке Министерства науки и высшего образования Российской федерации, проект FSRZ-2023-0006. Тип ЭВМ: IBM PC-совмест. ПК. ОС: UNIX-совместимые.

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Держатели документа:
Сибирский федеральный университет

Доп.точки доступа:
Ершов, Александр Евгеньевич; Ershov, A. E.; Герасимов, Валерий Сергеевич; Gerasimov V. S.; Игнатова, Н. Ю.; Карпов, Сергей Васильевич; Karpov, S. V.; Сибирский федеральный университет; Федеральная служба по интеллектуальной собственности (Роспатент); Федеральный институт промышленной собственности
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10.

Гос. рег. прогр. для ЭВМ 2023681182 Российская Федерация

Программа расчёта трансмиссионных свойств плазмонного нановолновода / А. Е. Ершов, B. C. Герасимов, Н. Ю. Игнатова, С. В. Карпов. - № 2023681182 ; Заявл. 02.10.2022 ; Опубл. 11.10.2022 // Программы для ЭВМ. Базы данных. Топологии интегральных микросхем : офиц. бюл. Фед. службы по интеллектуал. собственности (Роспатент). - 2023. - № 10
Аннотация: Программа представляет собой клиентскую часть для расчёта на основе обобщённой теории трансмиссионных свойств плазмонного нановолновода. Взаимодействие с программой реализовано через интерфейс командной строки. В результате работы программа создаёт файл формата HDF5 с результатами расчетов. Работа выполнена при финансовой поддержке Министерства науки и высшего образования Российской федерации, проект FSRZ-2023-0006. Тип ЭВМ: IBM PC-совместимые. ОС: UNIX-совместимые.

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Держатели документа:
Сибирский федеральный университет

Доп.точки доступа:
Ершов, Александр Евгеньевич; Ershov, A. E.; Герасимов, Валерий Сергеевич; Gerasimov V. S.; Игнатова, Н. Ю.; Карпов, Сергей Васильевич; Karpov, S. V.; Сибирский федеральный университет; Федеральная служба по интеллектуальной собственности (Роспатент); Федеральный институт промышленной собственности
}
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11.

    Infrared bound states in the continuum: random forest method / M. S. Molokeev, A. S. Kostyukov, A. E. Ershov [et al.] // Opt. Lett. - 2023. - Vol. 48, Is. 17. - P. 4460-4463, DOI 10.1364/OL.494629. - Cited References: 42. - Ministry of Science and Higher Education of the Russian Federation (FSRZ-2023-0006) . - ISSN 0146-9592. - ISSN 1539-4794
   Перевод заглавия: Инфракрасные связанные состояния в континууме: метод случайного леса
Кл.слова (ненормированные):
Field enhancement -- Infrared radiation -- Neural networks -- Refractive index -- Second harmonic generation -- Subwavelength gratings
Аннотация: In this Letter, we consider optical bound states in the continuum (BICs) in the infrared range supported by an all-dielectric metasurface in the form of subwavelength dielectric grating. We apply the random forest machine learning method to predict the frequency of the BICs as dependent on the optical and geometric parameters of the metasurface. It is found that the machine learning approach outperforms the standard least square method at the size of the dataset of ≈4000 specimens. It is shown that the random forest approach can be applied for predicting the subband in the infrared spectrum into which the BIC falls. The important feature parameters that affect the BIC wavelength are identified.

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Держатели документа:
IRC SQC, Siberian Federal University, Krasnoyarsk, 660041, Russia
Kirensky Institute of Physics, Federal Research Center KSC SB RAS, Krasnoyarsk, 660036, Russia
Laboratory of Theory and Optimization of Chemical and Technological Processes, University of Tyumen, Tyumen, 625003, Russia
Institute of Computational Modelling SB RAS, Krasnoyarsk, 660036, Russia

Доп.точки доступа:
Molokeev, M. S.; Молокеев, Максим Сергеевич; Kostyukov, A. S.; Ershov, A. E.; Maksimov, D. N.; Максимов, Дмитрий Николаевич; Gerasimov, V. S.; Polyutov, S. P.
}
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12.

Size-selective optical trapping of nanoparticles with bound states in the continuum / A. S. Kostyukov, V. S. Gerasimov, A. E. Ershov [et al.] // Opt. Lasers Eng. - 2023. - Vol. 171. - Ст. 107797, DOI 10.1016/j.optlaseng.2023.107797. - Cited References: 46. - The work was supported by Russian Science Foundation Grant No. 22-12-00070 . - ISSN 0143-8166. - ISSN 1873-0302
Кл.слова (ненормированные):
Nanoparticles -- Bound states in the continuum -- Optical tweezers -- Optical trapping
Аннотация: We consider a waveguide with a symmetrically integrated silicon cylinder. This design supports a symmetry protected bound state in the continuum (BIC) with Q-factor controlled by slight displacement of the cylinder. When excited by a TE10 electromagnetic wave, the BIC leads to giant optical forces near the cylinder. These forces have a strong impact on nanoparticles being dragged by liquid flow over the waveguide as they approach the cylinder. At the same time, the nanoparticles perturb the resonant frequency of the BIC with a value proportional to their volume and proximity to the cylinder. Therefore, the interplay between the resonant width of the BIC and the nanoparticle frequency perturbation determines the positions of the nanoparticles trapped around the cylinder. This paradigm demonstrates resonant self-trapping and sorting of nanoparticles by size through BIC excitation. We highlight the extreme sensitivity of these effects to the frequency of the injected TE wave. Additionally, we show that these results remain valid when considering the finite conductivity of metal waveguides.

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WOS
Держатели документа:
International Research Center of Spectroscopy and Quantum Chemistry, Siberian Federal University, Krasnoyarsk, 660041, Russian Federation
Institute of Computational Modelling, SB RAS, Krasnoyarsk, 660036, Russian Federation
Kirensky Institute of Physics, Federal Research Center KSC SB RAS, Krasnoyarsk, 660036, Russian Federation

Доп.точки доступа:
Kostyukov, A. S.; Gerasimov, V. S.; Ershov, A. E.; Bulgakov, E. N.; Булгаков, Евгений Николаевич; Sadreev, A. F.; Садреев, Алмаз Фаттахович
}
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13.

Thermo-optic hysteresis induced by a high-quality defect mode in a two-dimensional photonic crystal / G. V. Shadrina, E. N. Bulgakov, D. N. Maksimov, V. S. Gerasimov // Phys. Rev. B. - 2023. - Vol. 108, Is. 15. - Ст. 155411, DOI 10.1103/PhysRevB.108.155411. - Cited References: 42. - This work received financial support through a grant of the Russian Science Foundation and Krasnoyarsk Regional Fund of Science No. 22-22-20056 . - ISSN 2469-9950. - ISSN 2469-9969
Аннотация: We consider thermo-optic bistability induced by a high-quality defect mode in the square array of dielectric rods. It is demonstrated that the scattering problem with an account of the variation of the dielectric constant by heating can be solved with the T-matrix method by introducing an explicit dependence of the permittivity of the defect rod on temperature. We found that the bistability occurs at low intensities of the incident wave ≈ 0.01mW/µm2 in a square array of 7 ˣ 7 silicon rods with a defect rod in the middle.

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Держатели документа:
Institute of Computational Modelling SB RAS, Krasnoyarsk 660036, Russia
Kirensky Institute of Physics, Federal Research Center KSC SB RAS, Krasnoyarsk 660036, Russia
IRC SQC, Siberian Federal University, Krasnoyarsk 660041, Russia

Доп.точки доступа:
Shadrina, G. V.; Bulgakov, E. N.; Булгаков, Евгений Николаевич; Maksimov, D. N.; Максимов, Дмитрий Николаевич; Gerasimov, V. S.
}
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14.

Ring of bound states in the continuum in the reciprocal space of a monolayer of high-contrast dielectric spheres / A. S. Kostyukov, V. S. Gerasimov, A. E. Ershov, E. N. Bulgakov // Phys. Rev. B. - 2022. - Vol. 105, Is. 7. - Ст. 075404, DOI 10.1103/PhysRevB.105.075404. - Cited References: 43. - This research was supported by RFBR, Krasnoyarsk Territory, and Krasnoyarsk Regional Fund of Science, Project No. 20-42-240003, by the Ministry of Science and Higher Education of the Russian Federation, Project No. FSRZ-20200008 . - ISSN 2469-9950. - ISSN 2469-9969

РУБ Materials Science, Multidisciplinary + Physics, Applied + Physics, Condensed Matter
Рубрики:
PHOTONIC BAND-STRUCTURE
FANO RESONANCES
SCATTERING
Аннотация: We consider light scattering by two-dimensional arrays of high-index dielectric spheres arranged into a triangular and square lattices. We demonstrate the appearance of the double degenerate accidental super-BIC modes with extremely suppressed radiative losses in the vicinity of the Γ point of the leaky band of the triangular lattice. Two rings of BICs (circular lines of BICs in reciprocal space) with different polarization appear at the point of the super-BIC destruction. The radius of the ring BIC (RBIC) changes as a function of the sphere's radius. We propose a generic analytical expression to describe the behavior of the guided mode decay rate as a function of the sphere radii and the wave vector in the vicinity of the RBIC. The results are explained using a multipolar approach.

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Держатели документа:
Siberian Fed Univ, Int Res Ctr Spect & Quantum Chem, Krasnoyarsk 660041, Russia.
Inst Computat Modelling SB RAS, Krasnoyarsk 660036, Russia.
Fed Res Ctr KSC SB RAS, Kirensky Inst Phys, Krasnoyarsk 660036, Russia.

Доп.точки доступа:
Kostyukov, A. S.; Gerasimov, V. S.; Ershov, A. E.; Bulgakov, E. N.; Булгаков, Евгений Николаевич; RFBR Russian Foundation for Basic Research (RFBR); Krasnoyarsk Territory; Krasnoyarsk Regional Fund of Science [20-42-240003]; Ministry of Science and Higher Education of the Russian Federation [FSRZ-20200008]
}
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15.

Enhanced sensitivity of an all-dielectric refractive index sensor with an optical bound state in the continuum / D. N. Maksimov, V. S. Gerasimov, A. A. Bogdanov, S. P. Polyutov // Phys. Rev. A. - 2022. - Vol. 105, Is. 3. - Ст. 033518, DOI 10.1103/PhysRevA.105.033518. - Cited References: 49. - The theoretical part of the research was supported by the Ministry of Science and High Education of Russian Federation, Project No. FSRZ-2020-0008, by Russian Foundation for Basic Research, Government of Krasnoyarsk Territory, Krasnoyarsk Regional Fund of Science (Grant No. 20-42-240003). The numerical part is supported by the Russian Science Foundation (21-72-30018) . - ISSN 2469-9926
Кл.слова (ненормированные):
Dielectric devices -- Dielectric materials -- Perturbation techniques -- Refractive index
Аннотация: The sensitivity of a refractive index sensor based on an optical bound state in the continuum is considered. Applying Zel'dovich perturbation theory we derived an analytic expression for bulk sensitivity of an all-dielectric sensor utilizing symmetry protected in-Γ optical bound states in a dielectric grating. The upper sensitivity limit is obtained. A recipe is proposed for obtaining the upper sensitivity limit by optimizing the design of the grating. It is shown that the maximal sensitivity can be achieved regardless to the permittivity of the constituent dielectric of the system. The results are confirmed through direct numerical simulations.

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Держатели документа:
IRC SQC, Siberian Federal University, Krasnoyarsk, 660041, Russian Federation
Kirensky Institute of Physics, Federal Research Center KSC SB RAS, Krasnoyarsk, 660036, Russian Federation
Institute of Computational Modeling SB RAS, Krasnoyarsk, 660036, Russian Federation
Department of Physics and Engineering, ITMO University, St. Petersburg, 191002, Russian Federation

Доп.точки доступа:
Maksimov, D. N.; Максимов, Дмитрий Николаевич; Gerasimov, V. S.; Bogdanov, A. A.; Polyutov, S. P.
}
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16.

    Part II. Nanobubbles around plasmonic nanoparticles in terms of modern simulation modeling: what makes them kill the malignant cells? / A. S. Kostyukov, I. L. Isaev, A. E. Ershov [et al.] // J. Phys. D. - 2022. - Vol. 55, Is. 17. - Ст. 175402, DOI 10.1088/1361-6463/ac4c1f. - Cited References: 49. - The research was supported by the Ministry of Science and High Education of Russian Federation (Project No. FSRZ-2020-0008), and was funded by RFBR, Krasnoyarsk Territory and Krasnoyarsk Regional Fund of Science, Project No. 20-42-240003 . - ISSN 0022-3727. - ISSN 1361-6463
   Перевод заглавия: Часть II. Нанопузырьки вокруг плазмонных наночастиц с точки зрения современного имитационного моделирования: что заставляет их убивать злокачественные клетки?

РУБ Physics, Applied
Рубрики:
STRESS WAVES
   LASER
   MEMBRANE
   DAMAGE
   DEATH
   LYSIS
Кл.слова (ненормированные):
photothermal effect -- plasmonic nanoparticle -- malignant cell membrane -- pulsed laser radiation -- finite elements analysis -- anticancer therapy -- aptamer
Аннотация: We have established numerically the physical pattern and conditions for formation of nanosized bubbles in aqueous medium around biocompatible plasmonic nanoparticles (NPs) selectively bound to the membrane of the malignant cells by means of DNA-aptamers under the action of picosecond laser radiation. The results obtained are based on the finite volume method and hydrodynamic models underlying the ANSYS Fluent package with extended capabilities. We have found the main features and previously unknown dominant factors of the damage effect on the cell membrane at the moment of the bubble nucleation around the plasmonic NPs of different types taking into account the influence of the closely located membrane. Information on the kinetics of spatial distribution of pressure, temperature and the relative proportion of vapor in the 'nanoparticle-membrane-medium' system have been obtained. The attention is drawn to the advantages of using biocompatible, perfectly absorbing core–shell plasmonic NPs for anti-tumor therapy characterized by an increased mechanical effect on malignant cell membranes at lower laser radiation intensity and the spectral position of their plasmon resonance (λ = 700 nm) in the hemoglobin transparency range. This ensures penetration of laser radiation deep into tissues. 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:
Siberian Fed Univ, Int Res Ctr Spect & Quantum Chem IRC SQC, Krasnoyarsk 660041, Russia.
Russian Acad Sci, Inst Computat Modelling, Siberian Branch, Krasnoyarsk 660036, Russia.
Fed Med Biol Agcy Russian Federat, Fed Siberian Res Clin Ctr, Krasnoyarsk 660037, Russia.
Russian Acad Sci, LV Kirensky Inst Phys, Fed Res Ctr KSC, Siberian Branch, Krasnoyarsk 660036, Russia.

Доп.точки доступа:
Kostyukov, A. S.; Isaev, I. L.; Ershov, A. E.; Gerasimov, V. S.; Polyutov, S. P.; Karpov, S. V.; Карпов, Сергей Васильевич; Ministry of Science and High Education of Russian Federation [FSRZ-2020-0008]; RFBRRussian Foundation for Basic Research (RFBR); Krasnoyarsk Territory and Krasnoyarsk Regional Fund of Science [20-42-240003]
}
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17.

    Part I. Nanobubbles in pulsed laser fields for anticancer therapy: in search of adequate models and simulation approaches / A. S. Kostyukov, I. L. Isaev, A. E. Ershov [et al.] // J. Phys. D. - 2022. - Vol. 55, Is. 17. - Ст. 175401, DOI 10.1088/1361-6463/ac4c20. - Cited References: 99. - The research was supported by the Ministry of Science and High Education of Russian Federation (Project No. FSRZ-2020-0008), and was funded by RFBR, Krasnoyarsk Territory and Krasnoyarsk Regional Fund of Science, Project Number 20-42-240003 . - ISSN 0022-3727. - ISSN 1361-6463
   Перевод заглавия: Часть I. Нанопузырьки в импульсных лазерных полях для противораковой терапии: в поисках адекватных моделей и вычислительных подходов

РУБ Physics, Applied
Рубрики:
INDUCED CELL-LYSIS
GOLD NANOPARTICLES
SELECTIVE NANOPHOTOTHERMOLYSIS
Кл.слова (ненормированные):
photothermal effect -- plasmonic nanoparticle -- malignant cell membrane -- pulsed laser radiation -- finite element analysis -- anticancer therapy
Аннотация: We numerically investigate the conditions for the laser-induced formation of nanobubbles in aqueous medium around plasmonic nanoparticles (NPs) bound to the malignant cell membranes that is considered as the method of their irreversible damage. We proposed employing the versatile and accessible simulation software as a research tool based on the finite volume method underlying the ANSYS Fluent package and supplemented with our user-defined functions that adapt it to solution of the stated problems. This adaptation allows to verify the model using experimental data for the same conditions. We determined the conditions for the pressure growth on the cell membrane at the initial moment of bubble formation significantly exceeding the threshold of irreversible damage. The model can be used for investigation of hydrodynamic effects accompanying irradiation of plasmonic NPs using both different types of pulsed lasers and ideally absorbing NPs with resonance in the hemoglobin spectral transparency range, as well as to uncover previously unknown effects. They include the conditions for localization of a damaging factor non-affecting the normal cells, the conditions for generation of ultrahigh pressure pulse that enables to damage the cell membrane and precedes formation of thin vapor shell around NPs, which, unlike large bubbles, requires registration using highly sensitive experimental measurements. An extensive overview of key publications summarizing the state-of-art in this area is presented.

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Держатели документа:
Siberian Fed Univ, Int Res Ctr Spect & Quantum Chem IRC SQC, Krasnoyarsk 660041, Russia.
Russian Acad Sci, Siberian Branch, Inst Computat Modelling, Krasnoyarsk 660036, Russia.
Fed Med Biol Agcy Russian Federat, Fed Siberian Res Clin Ctr, Krasnoyarsk 660037, Russia.
Russian Acad Sci, Siberian Branch, Fed Res Ctr KSC, LV Kirensky Inst Phys, Krasnoyarsk 660036, Russia.

Доп.точки доступа:
Kostyukov, A. S.; Isaev, I. L.; Ershov, A. E.; Gerasimov, V. S.; Polyutov, S. P.; Karpov, S. V.; Карпов, Сергей Васильевич; Ministry of Science and High Education of Russian Federation [FSRZ-2020-0008]; RFBRRussian Foundation for Basic Research (RFBR); Krasnoyarsk Territory and Krasnoyarsk Regional Fund of Science [20-42-240003]
}
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18.

    Nature of the anomalous size dependence of resonance red shifts in ultrafine plasmonic nanoparticles / L. K. Sorensen, D. E. Khrennikov, V. S. Gerasimov [et al.] // J. Phys. Chem. C. - 2022. - Vol. 126, Is. 39. - P. 16804-16814, DOI 10.1021/acs.jpcc.2c03738. - Cited References: 61. - D.K., V.G., A.E., S.P., and S.K. acknowledge the support by the Russian Science Foundation (project no. 18-13-00363). L.K.S acknowledges the support of Carl Tryggers Stifetelse, project CTS 18-441. The authors also acknowledge the Swedish National Infrastructure for Computing (SNIC) at the High Performance Computing Center North (HPC2N) partially funded by the Swedish Research Council through grant agreement no. 2020/3-29 . - ISSN 1932-7447
   Перевод заглавия: Природа аномальной размерной зависимости резонансных длинноволновых сдвигов в сверхмалых плазмонных наночастицах
Аннотация: Plasmonic red shifts of nanoparticles are commonly used in imaging technologies to probe the character of local environments, and the understanding of their dependence on size, shape, and surrounding media has therefore become an important target for research. The red shift of plasmon resonances changes character at about 8-10 nm of size for spherical gold nanoparticles above this value, the red shift progresses linearly with particle size, while below this size, the red shift changes nonlinearly and more strongly with size. Using an atomistic discrete interaction model, we have studied the special properties of the nanoparticle surface layers and discovered its importance for ultrafine plasmonic nanoparticles and their red shifts. We find that the physical origin for the specific properties inherent to the surface layer of atoms near the nanoparticle boundary is related to the anisotropy of the local environment of atoms in this layer by other atoms. The anisotropy changes the conditions for light-induced nonlocal interactions of neighboring atoms with each other and with the incident radiation compared to the atoms located in the particle core with isotropic nearest surroundings by other atoms. The local anisotropy of the nanoparticle crystal lattice is a geometric factor that increases toward its boundary and that is the most fundamental factor underlying the physical differences between the nanoparticle surface layer and the core material. It is shown that the inflexion point at 8-10 nm is due to a change in the dominant physical origin of the red shift from chaotization of atomically light-induced dipoles within the surface layer in the case of ultrafine nanoparticles to retardation effects for large nanoparticles in which the relative volume of the surface layer decreases rapidly to a negligible value with increasing nanoparticle size. The patterns revealed are the basis for predicting the manifestation of surface layer effects in ultrafine plasmonic nanoparticles of different shapes and composed of different plasmonic materials.

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Держатели документа:
Department of Physics and Astronomy, Uppsala University, Box 516, Uppsala, SE-751 20, Sweden
Department of Theoretical Chemistry and Biology, School of Engineering Sciences in Chemistry, Biotechnology and Health, Royal Institute of Technology, Stockholm, SE-10691, Sweden
University Library, University of Southern Denmark, Odense M, DK-5230, Denmark
International Research Center of Spectroscopy and Quantum Chemistry, Siberian Federal University, Krasnoyarsk, 660041, Russian Federation
Federal Research Center KSC SB RAS, Institute of Computational Modelling, Krasnoyarsk, 660036, Russian Federation
Federal Siberian Research Clinical Centre under FMBA of Russia, 26 Krasnoyarsk, Kolomenskaya660037, Russian Federation
Federal Research Center KSC SB RAS, L. V. Kirensky Institute of Physics, Krasnoyarsk, 660036, Russian Federation

Доп.точки доступа:
Sorensen, L. K.; Khrennikov, D. E.; Gerasimov, V. S.; Ershov, A. E.; Polyutov, S. P.; Karpov, S. V.; Карпов, Сергей Васильевич; Agren, H.
}
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19.

    Medium dependent optical response in ultra-fine plasmonic nanoparticles / L. K. Sorensen, D. E. Khrennikov, V. S. Gerasimov [et al.] // Phys. Chem. Chem. Phys. - 2022. - Vol. 24, Is. 39. - P. 24062-24075, DOI 10.1039/d2cp02929d. - Cited References: 52. - DEK, VSG, SVK acknowledge the support of the Russian Science Foundation (project no. 18-13-00363). L. K. S. acknowledges the support of Carl Tryggers Stiftelse, project CTS 18-441. We also acknowledge the Swedish National Infrastructure for Computing (SNIC) at the High Performance Computing Center North (HPC2N) partially funded by the Swedish Research Council through grant agreement no. 2021/3-22 . - ISSN 1463-9084
   Перевод заглавия: Зависимость оптического отклика сверхмалых плазмонных наночастиц от окружающей среды
Аннотация: We study the influence of media on the interaction of ultra-fine plasmonic nanoparticles (≤ 8 nm) with radiation. The important role of the surface layer of the nanoparticles, with properties that differ from the ones in the inner part, is established. Using an atomistic representation of the nanoparticle material and its interaction with light, we find a highly inhomogeneous distribution of the electric field inside and around the particles. It is predicted that with an increase in the refractive index of the ambient medium, the extension of the surface layer of atoms increases, something that also is accompanied by an enhanced red shift of the plasmon resonance band compared to large particles in which the influence of this layer and its relative volume is reduced. It is shown that the physical origin for the formation of a surface layer of atoms near the nanoparticle boundary is related to the anisotropy of the local environment of atoms in this layer which changes the conditions for the interaction of neighboring atoms with each other and with the incident radiation. It is shown that a growth of the refractive index of the ambient medium results in an increase in the local field in the dielectric cavity in which a plasmonic nanoparticle is embedded and which is accompanied by a growth of the amplitude of the plasmon resonance. We predict that in the ultra-fine regime the refractive index sensitivity shows a decreasing trend with respect to size which is opposite to that for larger particles. With the applied atomistic model this work demonstrates close relations between field distributions and properties of ultra-fine nanoparticles.

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Держатели документа:
Department of Physics and Astronomy, Uppsala University, Box 516, SE-751 20 Uppsala, Sweden. lasse.kragh.soerensen@gmail.com
Department of Theoretical Chemistry and Biology, School of Engineering Sciences in Chemistry, Biotechnology and Health, Royal Institute of Technology, Stockholm, SE-10691, Sweden
University Library, University of Southern Denmark, DK-5230 Odense M, Denmark
International Research Center of Spectroscopy and Quantum Chemistry, Siberian Federal University, Krasnoyarsk, 660041, Russian Federation
Institute of Computational Modelling, Federal Research Center KSC SB RAS, Krasnoyarsk, 660036, Russian Federation
Federal Siberian Research Clinical Centre under FMBA of Russia, 660037, Kolomenskaya, 26 Krasnoyarsk, Russia
L. V. Kirensky Institute of Physics, Federal Research Center KSC SB RAS, Krasnoyarsk, 660036, Russian Federation

Доп.точки доступа:
Sorensen, L. K.; Khrennikov, D. E.; Gerasimov, V. S.; Ershov, A. E.; Polyutov, S. P.; Karpov, S. V.; Карпов, Сергей Васильевич; Agren, H.
}
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20.

Thermo-optic hysteresis with bound states in the continuum / D. N. Maksimov, A. S. Kostyukov, A. E. Ershov [et al.] // Phys. Rev. A. - 2022. - Vol. 106, Is. 6. - Ст. 063507, DOI 10.1103/PhysRevA.106.063507. - Cited References: 52. - This work received financial support through the Russian Science Foundation and Krasnoyarsk Regional Fund of Science under Grant No. 22-22-20056 [52]. The authors acknowledge discussions with A. A. Bogdanov . - ISSN 2469-9926. - ISSN 2469-9934
Аннотация: We consider thermo-optic hysteresis in a silicon structure supporting bound states in the continuum. Taking into account radiative heat transfer as a major cooling mechanism we constructed a nonlinear model describing the optical response. It is shown that the thermo-optic hysteresis can be obtained with low intensities of incident light I0 ≈ 1 W/m2 at the red edge of the visible under the critical coupling condition.

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Держатели документа:
IRC SQC, Siberian Federal University, 660041 Krasnoyarsk, Russia
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:
Maksimov, D. N.; Максимов, Дмитрий Николаевич; Kostyukov, A. S.; Ershov, A. E.; Molokeev, M. S.; Молокеев, Максим Сергеевич; Bulgakov, E. N.; Булгаков, Евгений Николаевич; Gerasimov, V. S.
}
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