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[Text] / A. E. Ershov [et al.] // Chin. Phys. B. - 2015. - Vol. 24, Is. 4. - Ст. 047804, DOI 10.1088/1674-1056/24/4/047804. - Cited References:25. - Project supported by the Russian Academy of Sciences (Grant Nos. 24.29, 24.31, III.9.5, 43, SB RAS-SFU (101), and 3-9-5). . - ISSN 1674-1056. - ISSN 1741-4199РУБ Physics, Multidisciplinary

Аннотация: Interactions of pulsed laser radiation with resonance domains of multiparticle colloidal aggregates having an increasingly complex local environment are studied via an optodynamic model. The model is applied to the simplest configurations, such as single particles, dimers, and trimers consisting of mono- and polydisperse Ag nanoparticles. We analyze how the local environment and the associated local field enhancement by surrounding particles affect the optodynamic processes in domains, including their photomodification and optical properties.

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Держатели документа:
Russian Acad Sci, LV Kirensky Inst Phys, Krasnoyarsk 660036, Russia
Russian Acad Sci, Inst Computat Modeling, Krasnoyarsk 660036, Russia
Siberian State Aerosp Univ, Krasnoyarsk 660014, Russia
Siberian Fed Univ, Krasnoyarsk 660028, Russia

Доп.точки доступа:
Ershov, A.E.; Gavrilyuk, A.P.; Гаврилюк, Анатолий Петрович; Karpov, S.V.; Semina, P.N.; Russian Academy of Sciences [24.29, 24.31, III.9.5, 43, SB RAS-SFU (101), 3-9-5]

[Text] / A. E. Ershov, A. P. Gavrilyuk, S. V. Karpov // Plasmonics. - 2016. - Vol. 11, Is. 2. - P403-410, DOI 10.1007/s11468-015-0054-8. - Cited References:20. - Authors are thankful to Prof. V.A. Markel (University of Pennsylvania) for supplying program codes with realization of coupled dipole method for polydisperse nanoparticle aggregates. This work was performed within the state contract of the RF Ministry of Education and Science for Siberian Federal University for scientific research in 2014 (Reference number 1792) . - ISSN 1557-1955. - ISSN 1557-1963РУБ Chemistry, Physical + Nanoscience & Nanotechnology + Materials Science,

Аннотация: We use an optodynamic model to study the interaction of pulsed laser radiation of different duration with mono- and polydisperse dimers and trimers of plasmonic nanoparticles as resonant domains of colloid Ag multiparticle aggregates. A comparative analysis of the influence of pulse duration on the kinetic characteristics of domains accompanied by the change in their local structure was carried out taking into account the intensity of incident radiation. The obtained results explain the reasons for laser photochromic reactions in materials containing colloidal aggregates of plasmonic nanoparticles.

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Держатели документа:
Russian Acad Sci, LV Kirensky Inst Phys, Krasnoyarsk 660036, Russia.
Russian Acad Sci, Inst Computat Modeling, Krasnoyarsk 660036, Russia.
Siberian State Aerosp Univ, Krasnoyarsk 660014, Russia.
Siberian Fed Univ, Krasnoyarsk 660028, Russia.

Доп.точки доступа:
Ershov, A. E.; Gavrilyuk, A. P.; Karpov, S. V.; state contract of the RF Ministry of Education and Science for Siberian Federal University [1792]

/ A. E. Ershov [et al.] // Appl Phys B. - 2017. - Vol. 123, Is. 6, DOI 10.1007/s00340-017-6755-2 . - ISSN 0946-2171
Аннотация: We have shown significant suppression of resonant properties of metallic nanoparticles at the surface plasmon frequency during the phase transition “solid–liquid” in the basic materials of nanoplasmonics (Ag, Au). Using experimental values of the optical constants of liquid and solid metals, we have calculated nanoparticle plasmonic absorption spectra. The effect was demonstrated for single particles, dimers and trimers, as well as for the large multiparticle colloidal aggregates. Experimental verification was performed for single Au nanoparticles heated to the melting temperature and above up to full suppression of the surface plasmon resonance. It is emphasized that this effect may underlie the nonlinear optical response of composite materials containing plasmonic nanoparticles and their aggregates. © 2017, Springer-Verlag Berlin Heidelberg.

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Держатели документа:
Institute of Computational Modeling, Federal Research Center KSC SB RAS, Krasnoyarsk, Russian Federation
Institute of Nanotechnology, Spectroscopy and Quantum Chemistry, Siberian Federal University, Krasnoyarsk, Russian Federation
Siberian State University of Science and Technologies, Krasnoyarsk, Russian Federation
L.V. Kirensky Institute of Physics, Federal Research Center KSC SB RAS, Krasnoyarsk, Russian Federation

Доп.точки доступа:
Ershov, A. E.; Gerasimov, V. S.; Gavrilyuk, A. P.; Karpov, S. V.