Preprint Article Version 1 Preserved in Portico This version is not peer-reviewed

Comparative Simulation of Plasmonic Nanostructures: Optical Response of Periodic Metal Nanostrip and Nanodisk Arrays on Mirror

Version 1 : Received: 24 March 2024 / Approved: 25 March 2024 / Online: 26 March 2024 (11:54:48 CET)

How to cite: Ebrahimzadeh Esfahani, N.; Kováč, Jr., J.; Maruccio, G.; Rizzato, S.; Kováčová, S. Comparative Simulation of Plasmonic Nanostructures: Optical Response of Periodic Metal Nanostrip and Nanodisk Arrays on Mirror. Preprints 2024, 2024031593. https://doi.org/10.20944/preprints202403.1593.v1 Ebrahimzadeh Esfahani, N.; Kováč, Jr., J.; Maruccio, G.; Rizzato, S.; Kováčová, S. Comparative Simulation of Plasmonic Nanostructures: Optical Response of Periodic Metal Nanostrip and Nanodisk Arrays on Mirror. Preprints 2024, 2024031593. https://doi.org/10.20944/preprints202403.1593.v1

Abstract

In this work, two plasmonic structures with two different periodic nanostructures (nanodisk and nanostrip arrays) separated from the gold layer by an ultrathin dielectric Al2O3 layer are proposed, and their optical properties are simulated as 3-dimensional models using COMSOL Multiphysics software tool. The optical responses, such as the amplification of the electric field and the scattering, absorption and extinction cross sections of the two structures, are investigated and compared. The results show that both structures show strong field enhancement in their gap layer, and the structure with the periodic array of metal nanodisks shows stronger field enhancement and larger absorption, extinction, and scattering cross sections in its dipole resonance wavelength, which is defined as a bright plasmonic mode. In addition, some weaker resonant modes are observed for both structures and the reason for their generation is dis-cussed. The analysis of different possible modes in such structures is crucial for their application in various fields.

Keywords

Nanodisk; nanostrip; plasmonic; field enhancement; absorption; scattering cross section; extinction cross section

Subject

Engineering, Electrical and Electronic Engineering

Comments (0)

We encourage comments and feedback from a broad range of readers. See criteria for comments and our Diversity statement.

Leave a public comment
Send a private comment to the author(s)
* All users must log in before leaving a comment
Views 0
Downloads 0
Comments 0


×
Alerts
Notify me about updates to this article or when a peer-reviewed version is published.
We use cookies on our website to ensure you get the best experience.
Read more about our cookies here.