Discrete dipole approximation

The discrete dipole approximation (DDA), also known as the coupled dipole approximation, is a numerical method for computing the scattering and absorption of electromagnetic radiation by particles of arbitrary shape and composition. The method represents a continuum target as a finite array of small, polarizable dipoles, and solves for their interactions with the incident field and with each other. DDA can handle targets with inhomogeneous composition and anisotropic material properties, as well as periodic structures. It is widely applied in fields such as nanophotonics, radar scattering, aerosol physics, biomedical optics, and astrophysics.

This article is issued from Wikipedia. The text is available under Creative Commons Attribution-Share Alike 4.0 unless otherwise noted. Additional terms may apply for the media files.