Резонансні оптичні явища в металевих гантелеподібних наночастинках

Автор(и)

  • A.V. Korotun National University “Zaporizhzhia Polytechnic”, G.V. Kurdyumov Institute for Metal Physics, Nat. Acad. of Sci. of Ukraine

DOI:

https://doi.org/10.15407/ujpe70.10.727

Ключові слова:

гантелеподiбна наночастинка, тензори поляризовностi, пiдсилення полiв, добротностi, перерiзи поглинання, розсiювання та екстинкцiї, пiдхiд еквiвалентного сфероїда, ефективне аспектне вiдношення, поверхневий плазмонний резонанс

Анотація

В класичному наближеннi одержано вирази для дiагональних компонент тензора добротностi, пiдсилення локальних електричних полiв та поляризовностi, а також перерiзiв поглинання, розсiювання та екстинкцiї для металевих гантелеподiбних наночастинок. Для побудови аналiтичної теорiї використано пiдхiд еквiвалентного сфероїда. Наведено результати розрахункiв вказаних оптичних характеристик для гантелеподiбних наночастинок рiзних розмiрiв i рiзних матерiалiв. Проаналiзовано вплив змiни ефективного аспектного вiдношення на еволюцiю частотних залежностей дослiджуваних оптичних характеристик. Показано доцiльнiсть використання гантелеподiбних наночастинок iз малим аспектним вiдношенням в наномедицинi та в оптичних високодобротних резонаторах iз малим аспектним вiдношенням.

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2025-10-29

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