Optical properties, photonics

Role of multipole interaction to the appearance of the red-shifted Mi–Frelich resonance induced by an interacting pairs of copper nanoparticles encapsulated by an amorphous carbon matrix

I. E. Istomin, S. G. Yastrebov, T. N. Vasilevskaya

Ioffe Institute, St. Petersburg

Abstract: A model that takes into account the contribution to optical absorption of the interaction between neighboring copper nanoclusters forming dimers is proposed. It allows to explain the splitting of the Mi–Frelich resonance experimentally observed in layers of amorphous hydrogenated carbon modified with copper. The model also predicts quite accurately the absolute values of the resonance frequencies observed experimentally.

Keywords: plasmonics, metal nanoparticles, dimers.

Received: 21.02.2025
Revised: 22.02.2025
Accepted: 24.02.2025

DOI: 10.61011/FTT.2025.02.59998.38-25

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