Plasmonic nano-shells: atomistic discrete interactionversusclassic electrodynamics models : научное издание | Научно-инновационный портал СФУ

Plasmonic nano-shells: atomistic discrete interactionversusclassic electrodynamics models : научное издание

Тип публикации: статья из журнала

Год издания: 2020

Идентификатор DOI: 10.1039/d0cp02248a

Аннотация: Using the extended discrete interaction model and Mie theory, we investigate the tunability of the optical polarizability of small metallic nano-shells. We show that the spectral positions of symmetric and antisymmetric dipolar plasmon resonances vary with the ratio of particle radius to hole radius in a manner similar to one predicted for uniform metallic nano-shells using a semiclassical approach of two coupled harmonic oscillators. We show that, according to the extended discrete interaction model, the dipolar plasmon resonances are also present for nano-shells in the 2-13 nm size region and show the same functional dependence seen for larger nano-shells. Using previously fitted data from experiment, we can predict the size-dependence of the plasma frequency for nano-shells in the 1-15 nm size region. We find that Mie theory, which utilizes the electron mean free path correction for the permittivity, is not able to reproduce the same functional form of the dipolar modes for the nano-shells of the same sizes. Using the extended discrete interaction model and Mie theory, we investigate the tunability of the optical polarizability of small metallic nano-shells. We show that the spectral positions of symmetric and antisymmetric dipolar plasmon resonances vary with the ratio of particle radius to hole radius in a manner similar to one predicted for uniform metallic nano-shells using a semiclassical approach of two coupled harmonic oscillators. We show that, according to the extended discrete interaction model, the dipolar plasmon resonances are also present for nano-shells in the 2-13 nm size region and show the same functional dependence seen for larger nano-shells. Using previously fitted data from experiment, we can predict the size-dependence of the plasma frequency for nano-shells in the 1-15 nm size region. We find that Mie theory, which utilizes the electron mean free path correction for the permittivity, is not able to reproduce the same functional form of the dipolar modes for the nano-shells of the same sizes.

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Издание

Журнал: PHYSICAL CHEMISTRY CHEMICAL PHYSICS

Выпуск журнала: Vol. 22, Is. 24

Номера страниц: 13467-13473

ISSN журнала: 14639076

Место издания: CAMBRIDGE

Издатель: ROYAL SOC CHEMISTRY

Авторы

  • Zakomirnyi Vadim (Royal Inst Technol, Sch Engn Sci Chem Biotechnol & Hlth, Dept Theoret Chem & Biol, SE-10691 Stockholm, Sweden; Siberian Fed Univ, Krasnoyarsk 660041, Russia; Fed Res Ctr KSC SB RAS, Inst Computat Modeling, Krasnoyarsk 660036, Russia)
  • Rasskazov Ilia L. (Univ Rochester, Inst Opt, Rochester, NY 14627 USA)
  • Sorensen Lasse K. (Royal Inst Technol, Sch Engn Sci Chem Biotechnol & Hlth, Dept Theoret Chem & Biol, SE-10691 Stockholm, Sweden)
  • Carney P.Scott (Univ Rochester, Inst Opt, Rochester, NY 14627 USA)
  • Rinkevicius Zilvinas (Royal Inst Technol, Sch Engn Sci Chem Biotechnol & Hlth, Dept Theoret Chem & Biol, SE-10691 Stockholm, Sweden)
  • Agren Hans (Royal Inst Technol, Sch Engn Sci Chem Biotechnol & Hlth, Dept Theoret Chem & Biol, SE-10691 Stockholm, Sweden; FMBA Russia, Fed Siberian Res Clin Ctr, 26 Krasnoyarsk,Kolomenskaya, Moscow 660037, Russia; Henan Univ, Coll Chem & Chem Engn, Kaifeng 475004, Henan, Peoples R China)

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