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How to simulate the plasmon resonance using discrete dipole approximation

How to simulate the plasmon resonance us...

For those of us working with nanoparticles, it became a common task to simulate the plasmon peak position as a function of geometry. Even if most papers claim it is an easy task, we all know that it is easy once you know how to do it; this article therefore aims to help those who are starting with simulations using the excellent ADDA (Amsterdam-Discrete Dipole Approximation) package, aiming to have spectra of gold nanoparticles. I will focus on gold nanorods, but the examples provided below should be easily extendable to other geometries. Installing the ADDA package has...