Study on dielectric function models for surface plasmon resonance structure

Area of Science:

• Physics
• Materials Science
• Optics

Background:

• Accurate modeling of dielectric properties is crucial for understanding surface Plasmon phenomena.
• Various permittivity function models exist, but their suitability for specific applications like surface Plasmon resonance (SPR) needs evaluation.

Purpose of the Study:

• To compare the performance of common permittivity function models.
• To identify the most accurate model for simulating surface Plasmon structures.
• To validate simulation results against experimental data.

Main Methods:

• Comparative analysis of four different permittivity function models.
• Analytical analysis of a practical surface Plasmon structure.
• Finite element method (FEM) simulations utilizing dielectric properties from selected models.

Main Results:

• The Brendel-Bormann function model was selected from a comparative study of four models.
• Simulations using the Brendel-Bormann model and FEM achieved approximately 94.4% accuracy compared to experimental data.
• The study identified a highly accurate method for modeling dielectric properties in surface Plasmon applications.

Conclusions:

• The Brendel-Bormann function model, when integrated with FEM, provides a highly accurate approach for simulating surface Plasmon structures.
• This validated model can be reliably used for future research in plasmonics and related optical phenomena.