Processes underlying the laser photochromic effect in colloidal plasmonic nanoparticle aggregates* : научное издание

Описание

Тип публикации: статья из журнала

Год издания: 2020

Идентификатор DOI: 10.1088/1674-1056/ab6551

Ключевые слова: nanoparticle; surface plasmon resonance; photochromic process; pulsed laser radiation

Аннотация: We have studied the dynamic and static processes occurring in disordered multiparticle colloidal Ag aggregates with natural structure and affecting their plasmonic absorption spectra under pico- and nanosecond pulsed laser radiations, as well as the physical origin responsible for these processes. We have shown that depending on thПоказать полностьюe duration of the laser pulse, the mechanisms of laser modification of such aggregates can be associated both with changes in the resonant properties of the particles due to their heating and melting (picosecond irradiation mode) and with the particle shifts in the resonant domains of the aggregates (nanosecond pulses) which depend on the wavelength, intensity, and polarization of the radiation. These mechanisms result in formation of a narrow dip in the plasmonic absorption spectrum of the aggregates near the laser radiation wavelength and affect the shape and position of the dip. The effect of polydispersity of nanoparticle aggregates on laser photochromic reaction has been studied.

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Издание

Журнал: CHINESE PHYSICS B

Выпуск журнала: vol. 29, Is. 3

Номера страниц: 037802

ISSN журнала: 16741056

Место издания: BRISTOL

Издатель: IOP PUBLISHING LTD

Авторы

  • Ershov A. E. (RAS, SB, Inst Computat Modeling, Krasnoyarsk 660036, Russia; Siberian Fed Univ, Krasnoyarsk 660041, Russia)
  • Gerasimov V. S. (RAS, SB, Inst Computat Modeling, Krasnoyarsk 660036, Russia; Siberian Fed Univ, Krasnoyarsk 660041, Russia)
  • Isaev I. L. (RAS, SB, Inst Computat Modeling, Krasnoyarsk 660036, Russia)
  • Gavrilyuk A. P. (RAS, SB, Inst Computat Modeling, Krasnoyarsk 660036, Russia; Siberian Fed Univ, Krasnoyarsk 660041, Russia)
  • Karpov S. V. (Siberian Fed Univ, Krasnoyarsk 660041, Russia; RAS, SB, KSC, Kirensky Inst Phys,Fed Res Ctr, Krasnoyarsk 660036, Russia; Siberian State Univ Sci & Technol, Krasnoyarsk 660014, Russia)

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