Scattering by a metallic cylinder on a substrate: burying effects

Area of Science:

• Physics
• Materials Science
• Optics

Background:

• Light scattering phenomena are crucial in understanding material properties.
• Modeling interactions between nanoscale metallic structures and light is complex.
• Previous models often struggle to account for realistic fabrication imperfections.

Purpose of the Study:

• To experimentally measure and theoretically model light scattering from a metallic cylinder on a metallic substrate.
• To validate a one-dimensional numerical model based on Maxwell's equations for real metals.
• To assess the model's ability to reproduce geometric artifacts like partial burying.

Main Methods:

• Experimental measurements of light scattering.
• Numerical calculations using a one-dimensional model derived from Maxwell's coupled integral equations.
• Comparison between experimental data and theoretical predictions.

Main Results:

• Experimental data on light scattering from a metallic cylinder (comparable diameter to wavelength) on a substrate were obtained.
• The one-dimensional theoretical model showed good agreement with the experimental measurements.
• The model successfully reproduced the partial burying of the cylinder, a result of the sputtering process.

Conclusions:

• The one-dimensional theoretical model is a valid approach for analyzing light scattering from metallic cylinders on substrates.
• The model's accuracy extends to phenomena influenced by fabrication processes.
• This work provides a reliable method for simulating light-matter interactions in such systems.