mnp_plasmon

mnp_plasmon is an Erlang Hex package for single-particle plasmonic response in the Rayleigh quasi-static limit. It mirrors the same physical model already published in JavaScript and Racket, so the codebase stays consistent across languages.

It integrates three layers:

• Drude dielectric function for Au, Ag, and Al
• Rayleigh polarizability of a metallic sphere in a dielectric medium
• Optical cross sections: extinction, scattering, and absorption

Install

Add to rebar.config:

{deps, [
    {mnp_plasmon, "0.1.0"}
]}. 

High-level API

1> mnp_plasmon:simulate_sphere_response(#{
       material => <<"Au">>,
       wavelength_nm => 550.0,
       radius_nm => 20.0,
       medium_refractive_index => 1.33
   }).

Return structure:

• inputs
• eps_particle
• eps_medium
• alpha
• cross_section.c_ext
• cross_section.c_sca
• cross_section.c_abs

Low-level API

• mnp_plasmon_material:material_list/0
• mnp_plasmon_material:get_drude_params/1
• mnp_plasmon_material:drude_epsilon/2
• mnp_plasmon_material:constant_epsilon/2
• mnp_plasmon_mie:rayleigh_polarizability/3
• mnp_plasmon_mie:rayleigh_cross_sections/4

Cross-language integration

This package is designed to match the same API concepts already implemented in:

• Python components in this repository
• npm packages under npm-packages/
• Racket package mnp-plasmon

There is also an Elixir example in examples/elixir_demo.exs showing how the Erlang package can be consumed from another BEAM language.

License

GPL-3.0-only